Greenheck Energy Recovery Filter Hood System - Manual (Page 4)

WARNING
Leave the pump running during cold weather
conditions to prevent freezing during cold
temperatures.
Electrical Requirements
Located in a NEMA-3R box in the center of the control
cabinet is the electrical connection cabinet. Both the
pump and pressure release solenoid valve will be wired
to the electrical connections cabinet from the factory.
Plumbing Requirements
1. Connect the main water supply connection to the
1-inch FNPT connection labeled “FROM WATER
SUPPLY”.
2. Provide the piping from the water heater to the
1-inch FNPT connection labeled “TO WATER
HEATER”.
3. Provide the piping from the left-most hood
penetration seal on hood to the 3/4-inch FNPT
connection labeled “TO FILTERS”.
4. Provide piping from the right-most hood penetration
seal on the hood to the 3/4-inch FNPT connection
labeled “FROM FILTERS”. In line within this pipe
run, provide a water hammer arrestor (provided
by others), a thermal expansion tank (provided by
others), and a 3/4-inch turn ball valve to test the flow
rate (provided by others). This ball valve needs to be
in an accessible location for testing.
5. Provide piping to an external drain from the 3/4-inch
FNPT connection labeled “TO DRAIN”.
NOTE
The water supply line must be pressurized to 40 PSI
minimum.
CONTROL INPUT: 120 VAC, 15 AMPS FROM BREAKER
H1
L1
N1
N
PS
LT1
P1N P1H P1
Pressure Release
Pressure Release Solenoid Valve
A1
R2
A2
SVN SVH SV
Pump
FS
LT2
BK
BK
BK
WH
WH
WH
BK WH
BK WH
No Flow - Red Light
NC C
Flow Switch
NC C
R2 - On
Delay
SL2 SL1
2 1
Pump Switch
BK 2 1 A1
R1
A2 WH
24 21
14 11
R1
R1
FI-B FI-A
PR-B PR-A
Connect 120 VAC power from a 15 amp breaker to
terminals H1 and N1.
Control Cabinet Layout
SHUT OFF VALVE
FROM FILTERS
TO FILTERS
TO DRAIN
SHUT OFF
VALVE
TO
WATER HEATER
Electrical
Controls
Throttle Valve
Pressure
Relief
Connection
(to a drain)
System
Pressure
Release
Pump
ON/OFF
Circulation
Pump
Circulation
Pump
Shut Off Valve Shut Off Valve
Flow Switch Flow Switch
No Flow
Light
CONTROL INPUT: 120 VAC, 15 AMPS FROM BREAKER
H1
L1
N1
N
Energy Recovery Filter System 4