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WSHP-SVX01Y-EN

provided for field installation on the entering water
side of the coil.

Boilerless Control/Electric Heat
(Option)

This option targets building designs that do not
incorporate a boiler to heat the loop system. During a
heavy heating 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 models, the electric heat can be
factory installed or field installed by the contractor.

For the 0.5-5 GEH models, the internal electric heat
must be factory installed, the external electric heat
must 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.

otte

e:: 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.

Supplemental or Boilerless
Electric Heat (Option)

Only available on vertical 0.5 to 5 ton GEVG and 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 0.5-5 GEV models, the electric heat
can be factory installed or field installed by the
contractor. 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).

otte

ess::

•

A high static blower motor is required to
support the hot gas reheat option for the
GEH 0.5 to 5 ton.

•

Units containing the hot gas reheat option
should not be used as a make-up air unit.

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
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

RV State

Fan

Com-
pressor
1

Com-
pressor
2

Fan
Speed

Heat

OFF

Heat

OFF

LOW