Reznor RPB Unit Installation Manual - Manual (Page 16)

Form I-RPB, P/N 131782 R11, Page 16
6.3 Unit Inlet Air
(cont'd)
6.0 Mechanical
(cont'd)
FIGURE 15 - Connect Fresh Water
Supply to Inlet of Float Valve
Simulates
Side Panel
Use 1/4" Tubing
for Fresh Water
Supply
Compression Nut
and Tubing Ferrule
(Inside
Cabinet)
Float
Valve Rod
Instructions for Installing Optional Fill &
Drain Kit
NOTE: Follow instructions included in the valve
packages for attaching valves to the water line only.
The remainder of the installation instructions with the
valves does not apply to this type of application.
Water Line Connections (See illustration):
Supply (3-Way Valve) Connections - Connect the
water supply line to "B" (normally closed). Connect
the water drain line to "A" (normally open). Connect
the middle outlet to supply the water to the reservoir.
Drain (2-Way Valve) Connections - Connect the drain
pipe from the reservoir to the valve inlet. Connect the
outlet side into the drain lines from the cooling reser-
voir and the supply valve.
Electrical Connections (requires black and white
14-gauge wire) Refer to Wiring Diagram provided
with the furnace:
WARNING: Risk of electrical shock. Disconnect
the power.
1. Refer to the wiring diagram for terminal
connections. ( NOTE: If kit is not ordered with
the system, connections will not be shown on
Evaporative
Cooling
Module Float valve inlet water
connection (1/4” compression)
or inlet water connection to
solenoid valve for metering
system (1/2” male fitting)
Overflow
fitting -
3/4” garden
hose thread
tapped with
1/2” female
NPT
Drain fitting - 3/4”
garden hose thread
tapped with
1/2” female NPT
2-way
solenoid valve
(normally open)
3-way
solenoid
valve
To drain
Pressure regulator
(10 psi max)
Service valve
Roof Line
= Field supplied
Field supplied and
installed water piping
A (N.O.) B (N.C.) Water
inlet
FIGURE 16 - Water Connections including Optional
Drain and Fill Kit (pump & float controls)
the diagram. Terminal connections are specific to each system. Contact the factory for terminal connections. Be
prepared to provide all model information.)
2. Run field-supplied black wire from the electrical compartment (terminal on the wiring diagram) of the evaporative
cooling module and connect to the black wire on both the 3-way and the 2-way valve.
3. Run field-supplied white wire from the electrical compartment (terminal on the wiring diagram) of the evaporative
cooling module and connect to the white wire on both the 3-way and the 2-way valve.
mostat is satisfied. See FIGURE 16. If
installing an optional fill and drain kit,
follow the instructions with FIGURE 16.
Consult wiring diagram for electrical
connections.
6.3.4 Evaporative
Cooling Module,
(cont'd)
AquaSaver Timed Metering Control System
If the cooling module is equipped with an optional timed metering system, connect a
1/2" water line to the fitting on the side of the cooling module. Due to various water
pressures and installation conditions, the water supply line may bang abruptly when
the solenoid valve in the AquaSaver system closes. This banging can be minimized
by installing an optional water hammer arrestor in the supply line. When installing an
optional water hammer arrestor, select an indoor (above 32°F) location, either horizon-
tal or vertical, in line with and as close to the solenoid valve as possible. Follow the
manufacturer's instructions to install and maintain the water hammer arrestor.
A freeze protection kit (Option CT5) is also available.
CAUTION: Water reservoir must be drained and pump motor turned off when outside temperature
falls below 32°F (0°C). Pump must never be operated without water in the reservoir. See Hazard
Levels, page 2.
Supply and Drain Water Connections (cont'd)