2
Introduction
The WPWD product is a heating
and cooling hydronic fluid water-to-
water heat pump capable of pro-
ducing water temperature up to
130
F or temperatures down to
25 F. This extended operating
range offers great opportunities in
commercial, residential and indus-
trial applications.
There are many load side applica-
tions for which the WPWD is suited.
Typical usages include:
q Hydronic baseboard heating
q Radiant slab heating
q Space heating or cooling with
Trane fan coils
q Ice and snow removal
q High volume water heating (non
potable)
q Boiler replacement (@130
F)
In the heating mode, the water-to-
water unit efficiently extracts heat
from a water source (source side)
such as a well, lake, boiler/tower
loop or closed ground loop heat-ex-
changer, then transfers the heat to
another flow of water (load side).
The amount of heat added to the
load side is greater than the
amount taken from the source side.
The electrical energy supplied to
the compressor is added to the out-
put heat of compression.
The Trane water-to-water product
package includes:
q High efficient scroll compressor
q Compressor protection
q Water to refrigerant condensing
coil
q Freeze protection
q Water to refrigerant evaporator
coil
q Expansion valve
q Filter Drier
q Reversing Valve
q Internal desuperheater
(optional)
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