Owner Manual

for severe water damage.
A float switch is factory installed inside the Geocool® drain pan that when triggered by
condensate backing up, will shut down the compressor and a RED status light labeled
“CONDENSATE FAULT” will show up on the front panel display. The compressor will remain off
and the light illuminated until the condensate clog has been cleared.
9.0 DHW Tank Preparation
The DHW coil is a vented double-wall copper heat exchanger and is suitable for potable water.
The DHW pump is installed inside the unit and connected to a fused terminal.
1. Turn off the power supply or the fuel supply to the DHW tank. IF THE POWER IS NOT
TURNED OFF PRIOR TO DRAINING THE TANK, THE ELECTRIC HEATING ELEMENTS
WILL BURN OUT!!
2. Close the cold water supply valve to the DHW tank.
3. Attach water hose to the tank drain connection at the bottom of the tank and empty the tank
to a drain or outside location.
4. Open the pressure relief valve or faucet nearby to break the vacuum inside the hot water tank
to speed up the draining process.
5. After the tank has been drained disconnect the hose and remove the DHW tank drain fitting.
9.1 Desuperheater Option Installation
Install the desuperheater circuit similar as shown in Fig. 5.2. Include isolation valves and two
boiler drain valves for tank draining and DHW system purging. The valves shown in the drawing
below allow for pump service without draining the DHW tank. A horizontal swing check valve
must be used to prevent water in the tank from flowing backwards when the pump is not
running. Use 3/4" copper pipe for lower DHW pressure drop. Remove existing drain port from
the hot water tank and insert a standard dielectric fitting (thread the male end of the fitting into
the water heater drain port using a P. T. F. E. based thread sealer) and continue with the
installation as shown. Insulate all desuperheater circuit piping with pipe insulation.
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