10
OPT-AS3,4,5,8 (07-22) 160202-B
INSTALLATION—CONTINUED
Piping Connections—Continued
Optional Fill and Drain Kit Installation
An optional automatic fill and drain kit will automatically release supply water to the cooling module when a call
for cooling is made and will drain all water from the reservoir when the cooling switch is deactivated or a cooling
thermostat is satisfied. Install the optional fill and drain kit as follows:
NOTE: Follow instructions included in the valve packages for connecting valves to the water line
only. The remainder of the installation instructions with the valves do not apply to this type of ap-
plication.
1. Connect water line (see
a. For supply (three-way valve) connections, connect water supply line to B (normally closed), connect water
drain line to A (normally open), and connect middle outlet to supply water to cooling module reservoir.
b. For drain (two-way valve) connections, connect drain pipe from reservoir to A and connect outlet side to B and
connect into drain lines from cooling reservoir and supply valve.
2. Connect wiring (requires black and white 14-gauge wire):
⚠ WARNING ⚠
Risk of electrical shock. Disconnect the power.
NOTE: Refer to the wiring diagram provided with the furnace. If the kit is not ordered with the
system, connections will not be shown on the diagram. Terminal connections are specific to each
system. Contact the factory for terminal connections. Be prepared to provide all model information.
a. Run field-supplied black wire from electrical compartment (terminal on wiring diagram) of evaporative cooling
module and connect to black wire on three-way and two-way valves.
b. Run field-supplied white wire from electrical compartment (terminal on wiring diagram) of evaporative cooling
module and connect to white wire on three-way and two-way valves.
Figure 11. Fill and Drain Kit Connections
