Desuperheater Connection - WaterFurnace AT022C/D Installation And Maintenance Manual

PREMIER 2 SINGLE-SPEED INSTALLATION AND MAINTENANCE MANUAL
Discharge water from the unit is not contaminated in any manner and can be disposed of in
various ways, depending on local building codes (e.g. recharge well, storm sewer, drain field,
adjacent stream or pond, etc.) Most local codes forbid using the sanitary sewer for disposal.
Consult your local building and zoning department to assure compliance in your area.
Figure 10 - The water control
solenoid is wired between the common
pin #2 connector P1 and pin #3
connector P3, and a jumper wire is
connected between R and pin #1
connector P3. Notice that DIP switch
2–3, located on the PCB, must be
switched to the "Comp" position so the
valve will operate with the compressor.
WATER TANK PREPARATION
A family of four should have a water heater with approximately a 50-gallon capacity. For
families of more than four, use an 80-gallon water heater or two 50-gallon water heaters con-
nected in a series as shown in Figure 13. Electric water heaters are recommended.
Steps:
1) Turn off the power to the water heater. Elements will burn out if energized dry!
2) Attach a water hose to the water tank drain connection and run the other end of the hose to
an open drain or outdoors.
3) Close the cold water inlet valve to the water heater tank.
4) Drain the tank by opening the valve on the bottom of the tank, then open the pressure relief
valve or hot water faucet.
5) Flush the tank by opening the cold water inlet valve to the water heater to free the tank of
sediments. Close when draining water is clear.
6) Disconnect the garden hose and remove the drain valve from the water heater.
PLUMBING INSTALLATION
Steps:
1) Thread the male end of the coaxial drain tee
into the water heater drain port (see Figure 11.
2) Solder the 1/2" copper elbow into the coaxial
drain tee with the 90° bend pointing in the
correct direction.
3) Install the drain valve on the drain tee
assembly.
4) Run interconnection copper tubing (1/2"
nominal). The recommended maximum
distance is 50 ft. between the unit and water
heater (see Figures 12 and 13).
5) To prevent air entrapment in the system, install
a vent coupling at the highest point of the interconnecting line.
6) Insulate all exposed surfaces of both connecting water lines with 3/8" wall closed
cell insulation.
Typical external 24V
water solenoid valves (type PPV100,
BPV100) wiring
Note: switch SW2 - 3 to comp position
P1
2
C
1
R
P3
Acc Com 1
Solenoid
Valve 2
Acc NC
Acc NO 3
Figure 11 - Water Heater Connection Kit
DRAIN VALVE
1/2
NOMINAL
LONG
ELBOW
The optional brass adapter is available for use in areas
where local plumbing codes require it.
Desuperheater
Connection
BRASS ADAPTER
COAXIAL DRAIN TEE
9