Sunday night at 11

[Milk man]

This sucks because my first call is at a house with a ground source pool heater tomarrow. I've serviced this home a couple of times. They have money and are the type.

Last service I added a bunch of water to the ground loop. Brought the pressure up to around 75 psi. I didn't know it had a 12 pound expansion tank. The guy was pissed. Thought I screwed up his loop. Called the boss and boss agreed that the loop should never need water added. This is different that what I learned over the years at another company and factory training from WaterFurnace.

Okay done crying.

[oroy54]

Is this like a chilled water system? Closed loop?

[Milk man]

I think this is a HydroTherm pool heater (Ground source heat pump. I believe it has three loops. Close loop that heats and cools water. (Exchanges heat with the refrigeration loop). This water flows to a heat exchanger that the actual pool water flow through. (That would be the only open loop.) The of course the ground loop.

[oroy54]

Explain that to your wife. Then let us know what you said. I know what you said was in english, but what did you say?

[Milk man]

It's a HydroHeat brand.

Loop one is the ground loop that all ground source heatpumps have.

Second loop is a water loop to the heat exchanger. On a regular ground source HP it would be the air side.

Last loop is the pool water to the heat exchanger.

[Milk man]

Originally posted by oroy54
Explain that to your wife. Then let us know what you said. I know what you said was in english, but what did you say?

My wife just smiles and nodds.

[condenseddave]

Think of it as a boiler, without the fossil fuel burner, and you'll be fine.

It really is that, a boiler. "Indirect fired", technically.