Re: SM heat

Mark Erdos

Hi Mike,

If you have electric coil heating on your units, the water flow should not run.

If you have reverse cycle heating and air, the salt water pump should only run when one the compressors is running on one or more of the three units.

With best regards,


Sailing Vessel - Cream Puff - SM2K - #275
Currently cruising - Tahiti, French Polynesia

-----Original Message-----
From: [] On Behalf Of Mike Ondra via
Sent: Thursday, December 10, 2020 11:00 AM
To: AmelYachtOwners Group
Subject: [AmelYachtOwners] SM heat

Quick question. In the SM circa 1999, water is pumped through the three air handling units in both cooling and heating mode even though the heating mode is resistance. Is there a way, or would it be imprudent, too turn off the water pump when in heat mode. Would it be reasonable to install a switch on the water pump circuit to avoid circulating water when it’s not needed.
Mike Ondra
Aletes SM240

Join to automatically receive all group messages.