Rheem RJNA Series - Manual (Page 42)

THERMOSTATS—PACKAGE HEAT PUMPS
RECOMMENDED HEAT PUMP THERMOSTATS
Units Without Economizer
Honeywell
T7300A1005
T8611R1166
T874R
T841A1209
T874G1881 Q674F1360
Included
Q674F1360
Included
Q7300C1006
1
1
1
1
1
2
2
2
2
2
Manufacturer Model Sub-Base
Cooling
Stages
Heating
Stages
T8141A Included 1 2
General Electric
3AAT86B8A2 Included 1 2
3AAT83D9C1 Included 1 2
White-Rodgers
1F59-057 Included 1 2
1F92-71 Included 2 3
Maple Chase
962-0 Included 1 2
962-1 Included 1 2
Units With Economizer
Honeywell T874W1031 Included 2 3
SAMPLE
SPECIFICATIONS
Unit shall be completely factory assembled
and performance tested to provide the
required cooling and heating functions suit-
able for outdoor installations. Unit shall be
UL/cUL listed and rated in accordance to
ARI Standard 210.
Cabinet
Unit casing, base pan and framework shall
be manufactured of galvanized sheet metal
primed and finished with powder paint
capable of withstanding a 1000-hour salt
spray test per ASTM B 117. Unit interior cab-
inet surfaces shall be insulated with a mini-
mum 1/2-inch thick foil faced insulation.
Access panels shall be easily removable
providing access to the blower, filter, heating
compartment, and compressor/control box.
Unit base rails shall be provided with fork
insertion slots and rigging holes. Conden-
sate drain pan shall be of sloped design to
conform to ASHRAE 62. Unit shall be sup-
plied ready for vertical airflow and be easily
convertible to horizontal airflow at or before
installation.
Compressor(s)
Unit shall be provided with fully hermetic
scroll compressor(s) with internally protected
safety controls.
Coils
The evaporator and condenser coils shall
be fabricated of copper tubes with mechani-
cally bonded aluminum plate fins. They
shall be pressure tested prior to assembly
into the unit, and electronically leak tested
after assembly.
Condenser Fan
A single direct drive propeller fan shall dis-
charge air vertically upward. The fan motor
shall be permanently lubricated and have
built-in overload protection.
Evaporator Blower
A single, double inlet, centrifugal wheel
shall rotate in permanently lubricated ball
bearings. The wheel shall be made from
steel with corrosion resistant finish and shall
be statically and dynamically balanced.
ACCESSORIES
ROOF CURB
Curb shall be full perimeter type, complying
with the standards of the National Roofing
Contractors Association. Design shall pro-
vide for drop-in of supply and return ducts
prior to setting unit, and include an insulat-
ing panel for the rest of the curb area.
Economizer
Economizer shall be completely assembled
for field installation. Unit shall include all
controls and dampers including the baro-
metric relief damper.
Manual Fresh Air Damper
Damper shall consist of damper and rain-
hood which is manually preset to admit up
to 35% of outside air for field installation.
Motorized Fresh Air Damper
Damper shall consist of motor, damper, and
rainhood which can admit up to 35% of out-
side air for field installation.
Electric Heat Kits
Electric heat kits shall be available in a wide
range of capacity with branch circuit fusing
allowing single point wiring. Kits shall be
UL/cUL approved. Each kit shall be offered
as a field or factory installed option.
Pressure Controls
High and low pressure controls shall be
included for field or factory installation.
Low Ambient Control
Low ambient control shall be provided to
cycle the condenser fan in response to
condensing pressure and allow operation
to 0 degrees F. The option shall be field or
factory installed.
Time Delay Control
Time delay control shall be provided to
prevent the compressor from restarting 5
minutes after shutdown. The control shall
be field or factory installed.
Louver Panel Kits
Field or factory installed louver kits shall
be provided for condenser coil protection
against hail or flying debris.
[ ] Designates Metric Conversions
42
MECHANICAL SPECIFICATIONS—RJNA- SERIES