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W A T E R - S O U R C E H E A T P U M P S
JRE - Series
R e v . : A u g u s t 1 9 , 2 0 2 0
Installation
The installation of rooftop water-source heat pump units
and all associated components, parts and accessories
that make up the installation shall be in accordance with
the regulations of ALL authorities having jurisdiction
and MUST conform to all applicable codes. It is the
responsibility of the Installing Contractor to determine and
comply with ALL applicable codes and regulations.
� CAUTION! �
CAUTION! All refrigerant discharged from this unit must
be recovered without exception. Technicians must follow
industry accepted guidelines and all local, state and federal
statutes for the recovery and disposal of refrigerants.
When a compressor is removed from this unit, system
refrigerant circuit oil will remain in the compressor. To
avoid leakage of compressor oil, the refrigerant lines of the
compressor must be sealed after it is removed.
Mineral oil or equipment exposed to mineral oil (manifold
gauges, vacuum pumps or hoses) cannot be used to service
units charged with 410A refrigerant and P.O.E. oil. HFC-410A
and P.O.E. oil are extremely hygroscopic (they absorb water
from air). Only P.O.E. oil that has been verified as moisture
free can be added to the system. Consult factory for more
information.
Figure 1: JRE Curb Installation
Gasket
Curb
12
Location, Access and Curb Installation - Install curbs
with adequate clearance to allow unit maintenance and
servicing. Conform to the following guidelines when
selecting curb location.
1. Provide adequate clearance for filter replacement
and drain pan removal. Do not block filter access with
piping, conduit or other materials.
2. Provide access for fan and fan motor maintenance and
for servicing the compressor and coils without removal
of the unit.
3. Provide an unobstructed path to the unit to enable
removal of the unit if necessary.
4. Provide access to water valves and fittings, and
adequate access to the unit side panels and all
electrical connections.
Follow these guidelines when installing the curb.
1. Set unit on curb.
2. Align unit so that return air and supply air in the unit
match return and supply air opening in the curb frame.
3. Run supply and return loop piping and electrical supply
lines through the pipe chase provided in the curb.
Note: Refer to previous pages for actual unit dimensions.
JRE Series
Unit
Flashing
Roof
I n s t a l l a t i o n , O p e r a t i o n , M a i n t e n a n c e
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