Electric Heat Installation & Adjustment; Heater Kit; Maintenance - Goodman M Series Installation Instructions Manual

Design Superheat & Subcooling
Superheat Subcooling
Model
±2°F ±1°F
GPCM32441 7 9
GPCM33041 8 10
GPCM33641 7 10
GPCM34241 5 11
GPCM34841 5 13
GPCM36041 14 16
*PHM32441 15 12
*PHM33041 10 9
*PHM33641 6 9
*PHM34241 12 6
*PHM34841 12 10
*PHM36041 4 8
Figure 14: Design Superheat and Subcooling
Units with Fixed Orifice Devices
All package units with fixed orifice devices are charged
using the superheat method at the compressor suction line.
To increase super heat, remove charge and to decrease
super heat, add charge. After superheat is adjusted, it is
recommended to check unit subcooling at the condenser
coil liquid line. See Figure 14: DESIGN SUPERHEAT AND
SUBCOOLING table for targets on each model.
Units with Expansion valve (TXV)
Single Stage Cooling Application: Refer to the Design
Superheat & Subcooling table.
Two-Stage Cooling Application: Run unit on Low Stage
cooling and refer to Design Superheat & Subcooling table.
1. Purge gauge lines. Connect service gauge manifold
to access fittings. Run system at least 10 minutes
to allow pressure to stabilize.
2. Temporarily install thermometer on liquid (small)
line near liquid line access fitting with adequate
contact and insulate for best possible reading.
3. Check subcooling and superheat. System should
have a subcooling and superheat within the range
listed on the Design Superheat and Subcooling
table.
a. If subcooling and superheat are low, adjust TXV
superheat, then check subcooling.
NOTE: To adjust superheat, turn the valve stem
clockwise to increase and counterclockwise to
decrease.
b. If subcooling is low and superheat is high,
add charge to raise subcooling then check
superheat.
c. If subcooling and superheat are high, adjust TXV
valve superheat, then check subcooling.
d. If subcooling is high and superheat is low, adjust
TXV valve superheat and remove charge to
lower the subcooling.
NOTE: Do NOT adjust the charge based
on suction pressure unless there is a gross
undercharge.
4. Disconnect manifold set, installation is complete.
Expansion Cooling Outdoor
Device Stage ambient (°F)
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
Orifice High 95
TXV Low 82
ELECTRICAL HEAT INSTALLATION &
ADJUSTMENT

Heater Kit

NOTE: A separate power supply is required for
HKR/HKP Heater Kits.
Refer to the specification manual for heater kit match up
and Heater Kit Electrical Data.
This series of electric cooling and heat pump package
equipment is designed to accept a field installed electric
heat kit. The unit is equipped to easily install the HKR/HKP
Series Electric Heat Kit. Full Installation Instructions are
included in this kit. Please use this document for guidance
in field equipping the package unit with electric heat.
Choose the heat kit that fits the application for the specific
installation. Permanently mark the unit's nameplate with
the model being installed.
High and low voltage connections are detailed in the heat
kit instructions. Indoor Blower motor speed tap selection
may need to be modified to accommodate normal
continuous operation to prevent a nuisance trip. See below
FIGURE 15: ELECTRIC HEAT kW.
Model
[GPC/*PH]M32441
[GPC/*PH]M33041
[GPC/*PH]M33641
[GPC/*PH]M34241
[GPC/*PH]M34841
[GPC/*PH]M36041
*(F) - Factory Setting
Speed Taps Description: (H) / 4,5 - High; (M) 2,3 - Medium;
(L)/1 - Low
1/2/3/4/5: EEM motor
Figure 15: Electric Heat kW

MAINTENANCE

HIGH VOLTAGE!
Disconnect all power before servicing or
installing this unit. Multiple power sources
may be present. Failure to do so may cause
property damage, personal injury or death.
The Self-Contained Package Air Conditioner and Heat
Pump should operate for many years without excessive
service calls if the unit is installed properly. However, it
is recommended that the homeowner inspect the unit
before a seasonal start up. The coils should be free of
debris so adequate airflow is achieved. The return and
14
Electric Heat kW
5 8 10 15
M M M
H
(F) (F) (F)
M M M
H
(F) (F) (F)
H H
M M
(F)
H H
M M
(F)
3 3 3 3
(F) (F) (F) (F)
3 3 3 3
(F) (F) (F) (F)
WARNING
20
N/A
N/A
N/A
(F)
N/A
(F)
3
(F)
3
(F)