Carrier GC Series User Manual

32
INITIAL START--UP OF HRP SYSTEM
CAUTION
!
UNIT DAMAGE AND/OR OPERATION HAZARD
Failure to follow this caution may result in unit damage
and/or improper equipment operation.
Make sure all valves in heat recovery water piping system
are op en. NEVER OPERATE HR PUMP DRY.
1. Turn on the heat pump. The HR pump should not run if the
compressor is not running.
2. Turn HR switch to the “ON” position. The pump will oper-
ate if entering water temperature to HR is below 140_F
(60_C) and compressor discharge temp is above 120_F
(48.9_C) .
3. The temperature difference between the water entering and
leaving the heat recovery should be 5_Fto15_F(--15_Cto
-- 9 . 4 _C).
4. Allow the unit to operate for 20 to 30 minutes to ensure it is
functioning properly.
HRP Troubleshooting
The HR pump will be enabled when compressor discharge
temperature is 120_F (48.9_C)or above.
The circulating pump will be disabled if water temperature reaches
140_F(60_C) or amperage exceeds 0.4 amps.
HRP Troubleshooting
Problem Possible Cause Checks and Corrections
NO FLOW
LOW FLOW
No Power Check power supply
On/O Switch Position Set switch to “ON” position
Compressor Contactor Engage heat pump contactor
Broken or loose wires
Repair or tighten wires
Air Lock Purge air from piping system
Stuck pump shaft/impeller Remove pump cartridge and clean
Defective pump Replace pump
Kinked or under sized water piping Repair kink and check for proper line size
HIGH WATER
TEMPERATURE
Water temp limit closed
Stuck limit switch
Sensor not attached securely to line
LOW HEAT OUTPUT Clean heat exchangerScaled or fouled heat exchanger

Carrier GC Series Specifications

General

Brand	Carrier
Model	GC Series
Category	Heat Pump
Language	English