Empathy List Archives

RL

Robert Leviton

Mon, Nov 10, 2025 3:32 PM

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD
Sea Gypsy
Mamaroneck, NY
42-047

Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047

DB

david.boyuka@gmail.com

Mon, Nov 10, 2025 3:51 PM

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it
self-drains except for the dip in the line that goes under the master cabin
floor. Having said this, I installed a ball valve on the discharge lines
for the salon unit (in the lazaret) and pilot house unit (engine room). By
closing these valves, you can force either antifreeze or compressed air to
clear the master cabin unit of seawater. I have not had any freezing issues
using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka

"Tina Marie"

42-073

From: Robert Leviton via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa sentoa@lists.sentoa.org
Cc: Robert Leviton Robert@RobertLeviton.com
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump,
I placed a Trac Flushcap Connector to the raw water strainer, then force
pumped antifreeze into the strainer, and noted antifreeze successfully
exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze
exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the
system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka "Tina Marie" 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org> Cc: Robert Leviton <Robert@RobertLeviton.com> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047

RL

Robert Leviton

Mon, Nov 10, 2025 4:10 PM

Thanks David,

I'm not certain what transpired from last season where I followed the same process as below.
For some reason, I am not getting antifreeze pumping through the second two units.
I'll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors

Robert

Robert Leviton MD
Sea Gypsy
Mamaroneck, NY
42-047

From: david.boyuka--- via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:52 AM
To: 'South East Nordic Tugs Owners' Association (SENTOA)' sentoa@lists.sentoa.org
Cc: david.boyuka@gmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka
"Tina Marie"
42-073

From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Cc: Robert Leviton <Robert@RobertLeviton.com mailto:Robert@RobertLeviton.com>
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD
Sea Gypsy
Mamaroneck, NY
42-047

Thanks David, I'm not certain what transpired from last season where I followed the same process as below. For some reason, I am not getting antifreeze pumping through the second two units. I'll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 From: david.boyuka--- via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:52 AM To: 'South East Nordic Tugs Owners' Association (SENTOA)' <sentoa@lists.sentoa.org> Cc: david.boyuka@gmail.com Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka "Tina Marie" 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Cc: Robert Leviton <Robert@RobertLeviton.com<mailto:Robert@RobertLeviton.com>> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047

TL

TIMOTHY LEIGHTON

Tue, Nov 11, 2025 12:13 AM

Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification.
https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[19352285_1500.26022019100008.jpg]
Medium Unit Flushcap Connector, 2 1/2" | West Marinehttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
google.comhttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[image]
Sent from my iPad

On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa sentoa@lists.sentoa.org wrote:

Thanks David,

I’m not certain what transpired from last season where I followed the same process as below.
For some reason, I am not getting antifreeze pumping through the second two units.
I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors

Robert

Robert Leviton MD
Sea Gypsy
Mamaroneck, NY
42-047

From: david.boyuka--- via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:52 AM
To: 'South East Nordic Tugs Owners' Association (SENTOA)' sentoa@lists.sentoa.org
Cc: david.boyuka@gmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka
“Tina Marie”
42-073

From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Cc: Robert Leviton <Robert@RobertLeviton.com mailto:Robert@RobertLeviton.com>
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD
Sea Gypsy
Mamaroneck, NY
42-047

Sentoa mailing list -- sentoa@lists.sentoa.org
To unsubscribe send an email to sentoa-leave@lists.sentoa.org

Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification. <https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [19352285_1500.26022019100008.jpg] Medium Unit Flushcap Connector, 2 1/2" | West Marine<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> google.com<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [image] Sent from my iPad On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa <sentoa@lists.sentoa.org> wrote: Thanks David, I’m not certain what transpired from last season where I followed the same process as below. For some reason, I am not getting antifreeze pumping through the second two units. I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 From: david.boyuka--- via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:52 AM To: 'South East Nordic Tugs Owners' Association (SENTOA)' <sentoa@lists.sentoa.org> Cc: david.boyuka@gmail.com Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka “Tina Marie” 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Cc: Robert Leviton <Robert@RobertLeviton.com<mailto:Robert@RobertLeviton.com>> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org

RL

Robert Leviton

Tue, Nov 11, 2025 1:53 PM

Thanks All

I have used the flush cap connector, it's a great addition to my winterization "kit."

Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT.

Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor.

Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor.

Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor.

I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days.

I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works.

Thanks for your thoughts and contributions!

Robert

Robert Leviton
Mamaroneck NY
Sea Gypsy NT42-047

Robert H Leviton, MD, MPH
Email | Robert@RobertLeviton.com
Mobile | 914.715.8102
Fax. | 914.381.6819

From: TIMOTHY LEIGHTON tidetim@msn.com
Sent: Monday, November 10, 2025 7:13:27 PM
To: sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: Robert Leviton Robert@RobertLeviton.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42

Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification.
https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[19352285_1500.26022019100008.jpg]
Medium Unit Flushcap Connector, 2 1/2" | West Marinehttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
google.comhttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[image]
Sent from my iPad

On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa sentoa@lists.sentoa.org wrote:

Thanks David,

I’m not certain what transpired from last season where I followed the same process as below.

For some reason, I am not getting antifreeze pumping through the second two units.

I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

From: david.boyuka--- via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:52 AM
To: 'South East Nordic Tugs Owners' Association (SENTOA)' sentoa@lists.sentoa.org
Cc: david.boyuka@gmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka

“Tina Marie”

42-073

From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Cc: Robert Leviton <Robert@RobertLeviton.com mailto:Robert@RobertLeviton.com>
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

Sentoa mailing list -- sentoa@lists.sentoa.org
To unsubscribe send an email to sentoa-leave@lists.sentoa.org

Thanks All I have used the flush cap connector, it's a great addition to my winterization "kit." Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT. Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor. Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor. Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor. I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days. I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works. Thanks for your thoughts and contributions! Robert Robert Leviton Mamaroneck NY Sea Gypsy NT42-047 Robert H Leviton, MD, MPH Email | Robert@RobertLeviton.com Mobile | 914.715.8102 Fax. | 914.381.6819 ________________________________ From: TIMOTHY LEIGHTON <tidetim@msn.com> Sent: Monday, November 10, 2025 7:13:27 PM To: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: Robert Leviton <Robert@RobertLeviton.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42 Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification. <https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [19352285_1500.26022019100008.jpg] Medium Unit Flushcap Connector, 2 1/2" | West Marine<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> google.com<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [image] Sent from my iPad On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa <sentoa@lists.sentoa.org> wrote: Thanks David, I’m not certain what transpired from last season where I followed the same process as below. For some reason, I am not getting antifreeze pumping through the second two units. I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 From: david.boyuka--- via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:52 AM To: 'South East Nordic Tugs Owners' Association (SENTOA)' <sentoa@lists.sentoa.org> Cc: david.boyuka@gmail.com Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka “Tina Marie” 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Cc: Robert Leviton <Robert@RobertLeviton.com<mailto:Robert@RobertLeviton.com>> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org

ES

Eric Swanson

Tue, Nov 11, 2025 5:39 PM

Could you simply put a stopper in the 2 outlets already filled, forcing the antifreeze out the remaining unit?
Eric Swanson
NT 32-258
Gone Remote
Wilmington NC

From: Robert Leviton via Sentoa sentoa@lists.sentoa.org
Sent: Tuesday, November 11, 2025 8:53 AM
To: TIMOTHY LEIGHTON tidetim@msn.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: sentoa@lists.sentoa.org sentoa@lists.sentoa.org; Robert Leviton Robert@RobertLeviton.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Thanks All

I have used the flush cap connector, it's a great addition to my winterization "kit."

Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT.

Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor.

Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor.

Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor.

I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days.

I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works.

Thanks for your thoughts and contributions!

Robert

Robert Leviton
Mamaroneck NY
Sea Gypsy NT42-047

Robert H Leviton, MD, MPH
Email | Robert@RobertLeviton.com
Mobile | 914.715.8102
Fax. | 914.381.6819

From: TIMOTHY LEIGHTON tidetim@msn.com
Sent: Monday, November 10, 2025 7:13:27 PM
To: sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: Robert Leviton Robert@RobertLeviton.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42

Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification.
https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[19352285_1500.26022019100008.jpg]
Medium Unit Flushcap Connector, 2 1/2" | West Marinehttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
google.comhttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[image]
Sent from my iPad

On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa sentoa@lists.sentoa.org wrote:

Thanks David,

I’m not certain what transpired from last season where I followed the same process as below.

For some reason, I am not getting antifreeze pumping through the second two units.

I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

From: david.boyuka--- via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:52 AM
To: 'South East Nordic Tugs Owners' Association (SENTOA)' sentoa@lists.sentoa.org
Cc: david.boyuka@gmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka

“Tina Marie”

42-073

From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Cc: Robert Leviton <Robert@RobertLeviton.com mailto:Robert@RobertLeviton.com>
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

Sentoa mailing list -- sentoa@lists.sentoa.org
To unsubscribe send an email to sentoa-leave@lists.sentoa.org

Could you simply put a stopper in the 2 outlets already filled, forcing the antifreeze out the remaining unit? Eric Swanson NT 32-258 Gone Remote Wilmington NC ________________________________ From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org> Sent: Tuesday, November 11, 2025 8:53 AM To: TIMOTHY LEIGHTON <tidetim@msn.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org>; Robert Leviton <Robert@RobertLeviton.com> Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Thanks All I have used the flush cap connector, it's a great addition to my winterization "kit." Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT. Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor. Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor. Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor. I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days. I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works. Thanks for your thoughts and contributions! Robert Robert Leviton Mamaroneck NY Sea Gypsy NT42-047 Robert H Leviton, MD, MPH Email | Robert@RobertLeviton.com Mobile | 914.715.8102 Fax. | 914.381.6819 ________________________________ From: TIMOTHY LEIGHTON <tidetim@msn.com> Sent: Monday, November 10, 2025 7:13:27 PM To: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: Robert Leviton <Robert@RobertLeviton.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42 Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification. <https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [19352285_1500.26022019100008.jpg] Medium Unit Flushcap Connector, 2 1/2" | West Marine<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> google.com<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [image] Sent from my iPad On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa <sentoa@lists.sentoa.org> wrote: Thanks David, I’m not certain what transpired from last season where I followed the same process as below. For some reason, I am not getting antifreeze pumping through the second two units. I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 From: david.boyuka--- via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:52 AM To: 'South East Nordic Tugs Owners' Association (SENTOA)' <sentoa@lists.sentoa.org> Cc: david.boyuka@gmail.com Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka “Tina Marie” 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Cc: Robert Leviton <Robert@RobertLeviton.com<mailto:Robert@RobertLeviton.com>> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org

RL

Robert Leviton

Tue, Nov 11, 2025 5:46 PM

Yes, that was considered...yet did not want to have the "stopper" method my "permanent" solution as I winter store and our dinghy's have been removed.

Thanks Eric
...more to follow...

Robert
NT 42-047
Sea Gypsy
Mamaroneck, NY

From: Eric Swanson via Sentoa sentoa@lists.sentoa.org
Sent: Tuesday, November 11, 2025 12:39 PM
To: South East Nordic Tugs Owners' Association (SENTOA) sentoa@lists.sentoa.org
Cc: Eric Swanson eswanson23@hotmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Could you simply put a stopper in the 2 outlets already filled, forcing the antifreeze out the remaining unit?
Eric Swanson
NT 32-258
Gone Remote
Wilmington NC

From: Robert Leviton via Sentoa sentoa@lists.sentoa.org
Sent: Tuesday, November 11, 2025 8:53 AM
To: TIMOTHY LEIGHTON tidetim@msn.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: sentoa@lists.sentoa.org sentoa@lists.sentoa.org; Robert Leviton Robert@RobertLeviton.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Thanks All

I have used the flush cap connector, it's a great addition to my winterization "kit."

Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT.

Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor.

Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor.

Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor.

I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days.

I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works.

Thanks for your thoughts and contributions!

Robert

Robert Leviton
Mamaroneck NY
Sea Gypsy NT42-047

Robert H Leviton, MD, MPH
Email | Robert@RobertLeviton.com
Mobile | 914.715.8102
Fax. | 914.381.6819

From: TIMOTHY LEIGHTON tidetim@msn.com
Sent: Monday, November 10, 2025 7:13:27 PM
To: sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: Robert Leviton Robert@RobertLeviton.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42

Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification.
https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[19352285_1500.26022019100008.jpg]
Medium Unit Flushcap Connector, 2 1/2" | West Marinehttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
google.comhttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
[image]
Sent from my iPad

On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa sentoa@lists.sentoa.org wrote:

Thanks David,

I’m not certain what transpired from last season where I followed the same process as below.

For some reason, I am not getting antifreeze pumping through the second two units.

I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

From: david.boyuka--- via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:52 AM
To: 'South East Nordic Tugs Owners' Association (SENTOA)' sentoa@lists.sentoa.org
Cc: david.boyuka@gmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka

“Tina Marie”

42-073

From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Cc: Robert Leviton <Robert@RobertLeviton.com mailto:Robert@RobertLeviton.com>
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

Sentoa mailing list -- sentoa@lists.sentoa.org
To unsubscribe send an email to sentoa-leave@lists.sentoa.org

Yes, that was considered...yet did not want to have the "stopper" method my "permanent" solution as I winter store and our dinghy's have been removed. Thanks Eric ...more to follow... Robert NT 42-047 Sea Gypsy Mamaroneck, NY ________________________________ From: Eric Swanson via Sentoa <sentoa@lists.sentoa.org> Sent: Tuesday, November 11, 2025 12:39 PM To: South East Nordic Tugs Owners' Association (SENTOA) <sentoa@lists.sentoa.org> Cc: Eric Swanson <eswanson23@hotmail.com> Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Could you simply put a stopper in the 2 outlets already filled, forcing the antifreeze out the remaining unit? Eric Swanson NT 32-258 Gone Remote Wilmington NC ________________________________ From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org> Sent: Tuesday, November 11, 2025 8:53 AM To: TIMOTHY LEIGHTON <tidetim@msn.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org>; Robert Leviton <Robert@RobertLeviton.com> Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Thanks All I have used the flush cap connector, it's a great addition to my winterization "kit." Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT. Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor. Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor. Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor. I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days. I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works. Thanks for your thoughts and contributions! Robert Robert Leviton Mamaroneck NY Sea Gypsy NT42-047 Robert H Leviton, MD, MPH Email | Robert@RobertLeviton.com Mobile | 914.715.8102 Fax. | 914.381.6819 ________________________________ From: TIMOTHY LEIGHTON <tidetim@msn.com> Sent: Monday, November 10, 2025 7:13:27 PM To: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: Robert Leviton <Robert@RobertLeviton.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42 Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification. <https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [19352285_1500.26022019100008.jpg] Medium Unit Flushcap Connector, 2 1/2" | West Marine<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> google.com<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> [image] Sent from my iPad On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa <sentoa@lists.sentoa.org> wrote: Thanks David, I’m not certain what transpired from last season where I followed the same process as below. For some reason, I am not getting antifreeze pumping through the second two units. I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 From: david.boyuka--- via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:52 AM To: 'South East Nordic Tugs Owners' Association (SENTOA)' <sentoa@lists.sentoa.org> Cc: david.boyuka@gmail.com Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka “Tina Marie” 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Cc: Robert Leviton <Robert@RobertLeviton.com<mailto:Robert@RobertLeviton.com>> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org

TL

TIMOTHY LEIGHTON

Fri, Nov 14, 2025 12:22 AM

Quick update from Hampton. The hose adaptor arrived yesterday and we went down to the boat this morning with my pancake compressor. Hooked the compressor up to my filter housing (after removal of the strainer), closed the thru hull, opened all three SW thru hull valves, set the compressor to around 25 psi and let her run. Took about a minute for the compressor to evacuate all the water from the system. After shutting down the compressor, I emptied the still full filter bowl and that was it! Very easy. FYI, I then used about 8 gallons of -50 degree antifreeze to run through both the Cummins (6 gal) and Generator SW systems. Was reminded to ensure the water lift muffler was pretty much filled with antifreeze, hence the extra gallon of so of the stuff. One item of note there is that a friend of mine emphasized to me to drain the filter bowls of antifreeze afterwards. Guess the chemicals in that stuff is not good for the filter bowls. Done!! Thanks to everyone for their sage advice.
Tim Leighton
M/V Mystic, Hampton, VA
Sent from my iPad

On Nov 11, 2025, at 12:47 PM, Robert Leviton via Sentoa sentoa@lists.sentoa.org wrote:

Yes, that was considered...yet did not want to have the "stopper" method my "permanent" solution as I winter store and our dinghy's have been removed.

Thanks Eric
...more to follow...

Robert
NT 42-047
Sea Gypsy
Mamaroneck, NY

From: Eric Swanson via Sentoa sentoa@lists.sentoa.org
Sent: Tuesday, November 11, 2025 12:39 PM
To: South East Nordic Tugs Owners' Association (SENTOA) sentoa@lists.sentoa.org
Cc: Eric Swanson eswanson23@hotmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Could you simply put a stopper in the 2 outlets already filled, forcing the antifreeze out the remaining unit?
Eric Swanson
NT 32-258
Gone Remote
Wilmington NC

From: Robert Leviton via Sentoa sentoa@lists.sentoa.org
Sent: Tuesday, November 11, 2025 8:53 AM
To: TIMOTHY LEIGHTON tidetim@msn.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: sentoa@lists.sentoa.org sentoa@lists.sentoa.org; Robert Leviton Robert@RobertLeviton.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Thanks All

I have used the flush cap connector, it's a great addition to my winterization "kit."

Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT.

Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor.

Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor.

Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor.

I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days.

I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works.

Thanks for your thoughts and contributions!

Robert

Robert Leviton
Mamaroneck NY
Sea Gypsy NT42-047

Robert H Leviton, MD, MPH
Email | Robert@RobertLeviton.com
Mobile | 914.715.8102
Fax. | 914.381.6819

From: TIMOTHY LEIGHTON tidetim@msn.com
Sent: Monday, November 10, 2025 7:13:27 PM
To: sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Cc: Robert Leviton Robert@RobertLeviton.com; sentoa@lists.sentoa.org sentoa@lists.sentoa.org
Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42

Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification.
https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
<19352285_1500.26022019100008.jpg>
Medium Unit Flushcap Connector, 2 1/2" | West Marinehttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
google.comhttps://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=
<image.png>

Sent from my iPad

On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa sentoa@lists.sentoa.org wrote:

Thanks David,

I’m not certain what transpired from last season where I followed the same process as below.

For some reason, I am not getting antifreeze pumping through the second two units.

I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

From: david.boyuka--- via Sentoa sentoa@lists.sentoa.org
Sent: Monday, November 10, 2025 10:52 AM
To: 'South East Nordic Tugs Owners' Association (SENTOA)' sentoa@lists.sentoa.org
Cc: david.boyuka@gmail.com
Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42

Robert,

I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps.

David Boyuka

“Tina Marie”

42-073

From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Sent: Monday, November 10, 2025 10:32 AM
To: howiecf--- via Sentoa <sentoa@lists.sentoa.org mailto:sentoa@lists.sentoa.org>
Cc: Robert Leviton <Robert@RobertLeviton.com mailto:Robert@RobertLeviton.com>
Subject: [Sentoa] Tipis How to Winterize AC on NT42

Good Morning,

Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull.

After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit.

Thinking there may be manifolds for turning water on / off through the system, I could not locate any.

How does one force antifreeze into the second and third AC compressor units?

Thanks

Robert

Robert Leviton MD

Sea Gypsy

Mamaroneck, NY

42-047

Sentoa mailing list -- sentoa@lists.sentoa.org
To unsubscribe send an email to sentoa-leave@lists.sentoa.org

Quick update from Hampton. The hose adaptor arrived yesterday and we went down to the boat this morning with my pancake compressor. Hooked the compressor up to my filter housing (after removal of the strainer), closed the thru hull, opened all three SW thru hull valves, set the compressor to around 25 psi and let her run. Took about a minute for the compressor to evacuate all the water from the system. After shutting down the compressor, I emptied the still full filter bowl and that was it! Very easy. FYI, I then used about 8 gallons of -50 degree antifreeze to run through both the Cummins (6 gal) and Generator SW systems. Was reminded to ensure the water lift muffler was pretty much filled with antifreeze, hence the extra gallon of so of the stuff. One item of note there is that a friend of mine emphasized to me to drain the filter bowls of antifreeze afterwards. Guess the chemicals in that stuff is not good for the filter bowls. Done!! Thanks to everyone for their sage advice. Tim Leighton M/V Mystic, Hampton, VA Sent from my iPad On Nov 11, 2025, at 12:47 PM, Robert Leviton via Sentoa <sentoa@lists.sentoa.org> wrote: Yes, that was considered...yet did not want to have the "stopper" method my "permanent" solution as I winter store and our dinghy's have been removed. Thanks Eric ...more to follow... Robert NT 42-047 Sea Gypsy Mamaroneck, NY ________________________________ From: Eric Swanson via Sentoa <sentoa@lists.sentoa.org> Sent: Tuesday, November 11, 2025 12:39 PM To: South East Nordic Tugs Owners' Association (SENTOA) <sentoa@lists.sentoa.org> Cc: Eric Swanson <eswanson23@hotmail.com> Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Could you simply put a stopper in the 2 outlets already filled, forcing the antifreeze out the remaining unit? Eric Swanson NT 32-258 Gone Remote Wilmington NC ________________________________ From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org> Sent: Tuesday, November 11, 2025 8:53 AM To: TIMOTHY LEIGHTON <tidetim@msn.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org>; Robert Leviton <Robert@RobertLeviton.com> Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Thanks All I have used the flush cap connector, it's a great addition to my winterization "kit." Spoke with Chuck Hansen, the prior owner of my NT, and probably the most knowledgeable fellows in the world on maintaining your NT. Chuck shared that the single line leaving the Salon compressor is attached to a "Y" behind the wall of the former trash compactor port side in the galley. One arm of the "Y" goes to the Pilot House compressor that empties through a starboard side thru hull. The other arm goes to the Stateroom compressor. Apparently my Jabasco pump wasn't powerful enough to push antifreeze beyond the "Y" so all the fluid exited from both port sided thru hulls, never arriving to the Pilot House compressor. Same thing occurred when I attached a 6-gallon bucket filled with antifreeze directly to the raw water strainer...then activated the AC pump, the system emptied all 6-gallons before any antifreeze was delivered to the Pilot House compressor. I am the "winter dock master" at our club, managing 20 ice eaters protecting 18 winter wet stored boats (including my NT). I opined last evening that we'll unlikely need the ice eaters as I've pumped enough antifreeze into the harbor these last three days. I'll be disassembling the cabinetry this weekend to locate the "Y" to install a manifold valve that will turn off flow to the Stateroom compressor and "force" antifreeze to the Pilot House. I'll let you know how this works. Thanks for your thoughts and contributions! Robert Robert Leviton Mamaroneck NY Sea Gypsy NT42-047 Robert H Leviton, MD, MPH Email | Robert@RobertLeviton.com Mobile | 914.715.8102 Fax. | 914.381.6819 ________________________________ From: TIMOTHY LEIGHTON <tidetim@msn.com> Sent: Monday, November 10, 2025 7:13:27 PM To: sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Cc: Robert Leviton <Robert@RobertLeviton.com>; sentoa@lists.sentoa.org <sentoa@lists.sentoa.org> Subject: Re: [Sentoa] Re: Tipis How to Winterize AC on NT42 Update from my original posting. I’ve been talked into simply blowing out the entire system with my compressor. I already have a “flush cap” for the A/C system strainer and have ordered an attachment for that cap to allow me to connect my compressor. Open all three of the thru hull valves and let the compressor rip! Waiting for Amazon to deliver the compressor adaptor and I’ll report back when the job is done. Photos attached for clarification. <https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> <19352285_1500.26022019100008.jpg> Medium Unit Flushcap Connector, 2 1/2" | West Marine<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> google.com<https://www.google.com/aclk?sa=L&ai=DChsSEwi93Jbf5eiQAxV2T0cBHXuLIKUYACICCAEQBBoCcXU&co=1&cid=CAASmAHkaGAINOarD6L-BD7150nie4dvXbO5dccTkgoB0zKbk2Gx3wCbGiJ4sQGbBDt_slOYp97chcVw-CDc2gleN-G-dSeXSmGM1_WxT9XtwuldUTl1jvjHXw0GuIKV4xSli1ZBPm6yw4VQQuTHBfJVErfJ7F691GUuhqKMqbCCK5LlvVBWK-kyply3xmLAxkt4AL-YgszTRG7G5g&cce=1&sig=AOD64_18sXSgXMoCU6vSYMIYE_HEKrmo_Q&ctype=5&q=&ved=2ahUKEwjqwobf5eiQAxUbFFkFHQcOO8MQ5bgDKAB6BAgHEAs&adurl=> <image.png> Sent from my iPad On Nov 10, 2025, at 11:10 AM, Robert Leviton via Sentoa <sentoa@lists.sentoa.org> wrote: Thanks David, I’m not certain what transpired from last season where I followed the same process as below. For some reason, I am not getting antifreeze pumping through the second two units. I’ll disassemble the cabinets covering the units to learn more about the seawater loop to the compressors Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 From: david.boyuka--- via Sentoa <sentoa@lists.sentoa.org> Sent: Monday, November 10, 2025 10:52 AM To: 'South East Nordic Tugs Owners' Association (SENTOA)' <sentoa@lists.sentoa.org> Cc: david.boyuka@gmail.com Subject: [Sentoa] Re: Tipis How to Winterize AC on NT42 Robert, I own 42-073. Upon inspecting the a/c seawater loop, I believe it self-drains except for the dip in the line that goes under the master cabin floor. Having said this, I installed a ball valve on the discharge lines for the salon unit (in the lazaret) and pilot house unit (engine room). By closing these valves, you can force either antifreeze or compressed air to clear the master cabin unit of seawater. I have not had any freezing issues using this method, but we are located in NC and rarely see sub 20F temps. David Boyuka “Tina Marie” 42-073 From: Robert Leviton via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Sent: Monday, November 10, 2025 10:32 AM To: howiecf--- via Sentoa <sentoa@lists.sentoa.org<mailto:sentoa@lists.sentoa.org>> Cc: Robert Leviton <Robert@RobertLeviton.com<mailto:Robert@RobertLeviton.com>> Subject: [Sentoa] Tipis How to Winterize AC on NT42 Good Morning, Upon closing the seacock to the raw water strainer attached to the AC Pump, I placed a Trac Flushcap Connector to the raw water strainer, then force pumped antifreeze into the strainer, and noted antifreeze successfully exiting the port aft thruhull. After pumping 2 more gallons of antifreeze through the system, no antifreeze exited from the thruhull ports for the 2nd or 3rd AC unit. Thinking there may be manifolds for turning water on / off through the system, I could not locate any. How does one force antifreeze into the second and third AC compressor units? Thanks Robert Robert Leviton MD Sea Gypsy Mamaroneck, NY 42-047 _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org