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General Information
load, the loop temperature may begin to fall. As the loop
temperature decreases, the heating capacity of the heat
pump will also decrease. In the heating mode, when the
loop temperature falls below 55°F (factory setting), the
electric heater is energized, and the compressor is locked
out. The system's electric heat source will continue to be
utilized for primary heating until the loop temperature rises
above 60°F. Once the loop temperature rises above 60°F,
the boilerless controller returns the unit to normal
compressor heating operation and locks out the electric
heater.
For the 0.5-5 GEV/H models, the electric heat will be field
installed by the contractor.
For the GEH/V 6 to 25 ton units, the electric heat must be
field installed by the contractor.
Note: The boilerless controller has a field adjustable
entering water temperature setting of 25, 35, 45, 55,
and 60 degrees. The compressor operation will
return to normal operation when the loop
temperature rises 5 degrees above the setpoint.
This electric heat option is designed for primary heat
only, not to run as supplemental heat to the heating
function of the heat pump.
Supplemental or Boilerless
Electric Heat (Option)
Only available on GEHE/GEVE 6 to 25 ton units.
Supplemental heat will turn on automatically when heat
pump cannot provide sufficient heat to meet the heating
load. The electric heat will be energized to supplement the
heating provided by the heat pump. The heater for this
model shall be external to the equipment. For the GEH/V 6
to 25 ton units, the electric heat must be field installed by
the contractor.
Hot Gas Reheat (Option)
With the reheat option, the return-air from the space is
conditioned by the air-to-refrigerant coil, then reheated by
the reheat coil to control not only the space temperature,
but to also reduce the relative humidity of the space. When
operating in the reheat mode (meaning the sensible
temperature has been met in the space), the humidistat
signals the reheat relay coil to energize, allowing the high
pressure refrigerant gas to flow from the compressor
through the reheat valve, into the reversing valve and
reheat coil.
A switching relay has been provided for the reheat
application to adjust the blower motor from normal
operation to low speed when the hot gas reheat is
energized (for 0.5 to 5 ton equipment only).
Note: Units containing the hot gas reheat option should not
be used as a make-up air unit.
10
2-Speed Blower Motor (Option)
The 6 to 25 ton GEH/V models have indoor blowers that
are available with 2 speed motors, selectable in the model
number (Digit 12, drive packages one to nine). High speed
airflow matches the single speed motor airflow, referenced
in the Fan Performance tables. Low fan speed airflow is
approximately 50% of high fan speed airflow.
The 6 to 25 ton GEH/V two-speed blower motors are
available with the following options: Deluxe 24V or
Symbio™ 500/UC400 controls, Heat Pump (HP) or HP w/
Hot Gas Reheat or HP w/Waterside Economizer. Not
available with Boilerless or Supplemental Electric Heat.
Table 2. 6 to 25 ton GEH/V fan speed for two-speed
drive packages one to nine
Compres-
RV State
Fan
sor 1
Heat
OFF
OFF
Heat
ON
OFF
Heat
ON
ON
Heat
ON
ON
Cool
OFF
OFF
Cool
ON
OFF
Cool
ON
ON
Cool
ON
ON
Table 3. Refrigerant charge
Model (60
Heat Pump (oz)/(Kg)
HZ)
Circuit 1
GEH/V006
30.5 /
0.865
GEH/V009
31.0 /
0.879
GEH/V012
30.5 /
0.865
GEH/V015
37.5 /
1.063
GEH/V018
37.5 /
1.063
GEH/V024
47.0 /
1.332
GEH/V030
45.0 /
1.276
GEH/V036
50.0 /
1.417
GEH/V042
63.0 /
1.786
GEH/V048
67.0 /
1.899
GEH/V060
77.0 /
2.183
Fan
Compres-
Speed
sor 2
OFF
OFF
OFF
LOW
OFF
HIGH
ON
HIGH
OFF
OFF
OFF
LOW
OFF
LOW
ON
HIGH
Heat Pump with HGR
(oz)/(Kg)
Circuit 2
Circuit 1
Circuit 2
———
31.5/0.893
———
———
32.0 / 0.907
———
———
31.5 / 0.893
———
———
39.0 / 1.106
———
———
39.0 / 1.106
———
———
4.9.0 / 1.389
———
———
47.0 / 1.332
———
———
52.5 / 1.488
———
———
65.0 / 1.843
———
———
70.5 / 1.999
———
———
80.5 / 2.282
———
WSHP-SVX01AC-EN
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