Munchkin/Heat Exchanger/Circulating Pump

Dunwell

I've tried to post this question in my own words, but since I'm not an expert on the in's and out's of this project, I asked a friend who's working on this to write out a question that will hopefully be much clearer and get to the bottom of our dilemma. Thanks for your help:

"We are installing an indoor pool pump/heating system
and were wondering if anyone had any suggestions on how
to integrate the heating system. The heat is provided
by the house boiler, a multi-zone Munchkin system with the Vision 1 controls, and
the pool is one of the zones for the house heat. The
zone has a circulating pump. The pool heater is a stainless steel, tube
heat exchanger and requires both the pool filter pump
and the heat circulator pump to run. The pool filter
pump is on a timer and there will be a thermostat to
start the heating side (the house boiler and the
circulating pump).

The problem is we don't want to
start the heating side unless the filter pump is
running so we need to isolate the thermostat when the
pool filter pump is off.

We also need to know what other components (if any) are needed to be able to:

1) Heat the pool, chlorinate, and circulate
PLUS
2) Heat the pool ONLY.

My first guess is a current
sensing relay that connects the thermostat signal when
the filter pump is running, but this seems cumbersome.

Anyone know a simpler solution?"

Carl PE

relay

we don't want to start the heating side unless the filter pump is running so we need to isolate the thermostat when the pool filter pump is off.

Add a relay to your pool pump to break the W1 wire from the pool stat when the pump isn't running.

Dave_22

Hmmm...

I will take a couple stabs- how about a relay that is energized by the power for the pool pump, or the best wat would be a flow switch near the heat exchanger on the pool side. Either way- put the contact in series with the thermostat.

Chuck Shaw_2

how about

a flow switch, when the pump starts, the flow switch makes its contacts, feeding through an aqua stat, if there is a call for heat AND the flow switch is made, the boiler will fire. Otherwise, it is idle.

Just a thought

Chuck