11/2" Connections (spa/pool)
The spa or pool water should enter the HEAT SWAPPER™
on the same side as the temperature sensing probe (look
for 2 small wires going into the bulb well at the end of the
tank).
Use 11/2" PVC pipe for the spa or pool water lines
connected to the HEAT SWAPPER™. Do not use polyethylene
pipe. Always use teflon tape on threaded connections.
If the flow rate will be greater than 65 gallons per minute,
install a by-pass line around the HEAT SWAPPER™. Install
a by-pass check valve with a 5 lb. spring in the by-pass
line. This works very well when a 2-speed pump is used for
a spa. It will result in very little friction loss since most of the
water will continue to flow through the HEAT SWAPPER™.
When installing the HEAT SWAPPER™ be sure to position
it so the water will not drip on the pump motor or tank in case
of a fitting leak. Never install the HEAT SWAPPER™ so the
end of the Taco circulating pump motor is pointing to the
ceiling. |
3/4" Connections (heat source)
Use 3/4" type M copper pipe to connect the HEAT SWAPPER™
to the source of hot water (domestic water heater or boiler).
The hot water must enter at the pump. Use 3/4" pipe if the
HEAT SWAPPER™ is less than 30 feet from the water heater.
Use 1" if the distance is 30 to 100 feet.
CPVC pipe may be used if the heat source is less than 170oF.
If CPVC pipe is used, support the pipe every three feet with
straps 3/4" wide or wider.
Beginning in 2006, the Taco circulation pump comes equiped
with a built-in check valve. Prior to 2006 the HEAT SWAPPER™
had a separate check valve attached to the Heat Swapper.
Keep in mind that the HEAT SWAPPER™ will heat the spa or
pool water with essentially the same efficiency as the existing
heater, except for the heat loss from the heat source piping.
Therefore insulating the pipe between the heat source and the
HEAT SWAPPER™ will maximize efficiency.
The Taco circulation pump will not pump air out of the piping.
Always purge the air and any debris from the piping before
starting up. To do this, install an air purge valve in a tee in the
hot water return line at the farthest point away from the HEAT
SWAPPER™. Install another valve downsteam of the tee to
keep water from backflowing to the air purge valve. |
