Nomenclature - Condenser Hot Water Reheat Option - Johnson Controls JRE Series Installation Operation & Maintenance

Water source heat pumps
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4 5 6
J R E 0 3 6
1
NOTE:
1. ALL UNITS COME STANDARD WITH DOUBLE ISOLATED COMPRESSOR,
STAINLESS STEEL DRAIN PAN, AND 75VA TRANSFORMER.
2. REFER TO BLOWER PERFORMANCE TABLES IN SPEC CATALOG
TO DETERMINE CORRECT DRIVE PACKAGE
3. DIGIT 12 OPTIONS "D", "E", "F", "G" "H", "P", "S", "T", "U", "W", "Y", or "Z" ARE NOT AVAILABLE WITH CXM.
4. DIGIT 13 OPTIONS "G, H & J" ARE NOT AVAILABLE WITH CXM.
5. DIGIT 11 OPTION "D" IS NOT AVAILABLE ON SIZES 036, 072, 096, AND 120.
OPTION "E" IS NOT AVAILABLE ON SIZE 036.
6. HOT GAS BYPASS ON LEAD CIRCUIT ONLY.
HOT GAS BYPASS IS STANDARD WITH REHEAT OPTION.
7. DIGIT 12 AIR COILS ARE REFRIGERANT & HYDRONIC AIR COILS.
2 WAY MOTORIZED ON/OFF VALVE NOT AVAILABLE WITH "D", "E", "F", "G" "H", "P", "Y" or "Z"
8. DIGIT 12 OPTIONS "E", "D"," F", or "P" ARE NOT AVAILABLE WHEN DIGIT 13 OPTIONS ARE "G"," H", or "J".
Notes:
1. Reheat option (Digit 12 - D, E, F or P) must be ordered with original equipment (cannot be field added). Unit
must have DXM2 control. 460 volts require 4 wire power supply with neutral. Not available for units with
internal water valve, flow regulator options, or 575Volt. Check unit submittal for limitations and specific
requirements.
2. All JRE rooftops with the reheat option require antifreeze to protect the reheat coil in low ambient conditions.
ASHRAE minimums for the region shall be considered during the calculation of the antifreeze solution.
3. Condenser hot water reheat is not recommended for applications with poor water quality (see water quality
guidelines in unit IOM). The copper heat exchanger (Digit 12 - D or E) with cast iron pump are designed for
closed loop systems.
4. Max working water pressure for the reheat option is 145psig.
5. Thermostat must be separate humidistat or dehumidistat controller (see Table 2 for DXM2 DIP settings).
6. Condenser hot water reheat units must have minimum entering air temperature of 65°F DB / 55°F WB while
in the cooling, continuous fan, or dehumidification modes. Minimum entering air temperature while operating in
the heating mode (not continuous fan) is the minimum entering air temperature for the standard model (without
the reheat option) in the heating mode. Operating below these minimum entering air temperatures may result in
nuisance faults.
T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
Nomenclature – Condenser Hot Water Reheat Option
7
8
10
D
H
C
1
A A A A S
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
Decoder JRE 60Hz
11
12
13
14
15
HEAT EXCHANGER OPTIONS
NON-COATED AIR COILS
COPPER (CU)
COAX
C
STANDARD
MOTORIZED VALVE
T
REHEAT
E
INTERNAL
H
SECONDARY PUMP
JRE - Series
R e v . : A u g u s t 1 9 , 2 0 2 0
3
6
7
8
COATED AIR COILS
CUPRO-NICKEL (CN)
COPPER (CU)
CUPRO-NICKEL (CN)
COAX
COAX
N
A
S
U
P
D
Z
G
REHEAT OPTION COMPONENTS
3
6
REHEAT COIL
3-WAY MOTORIZED VALVE
PROPORTIONAL CONTROL
CIRCULATING PUMP
PUMP CONTACTOR
HOT GAS BYPASS
COAX
J
W
F
Y
27

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Jre036-072Jre096-144Jre168-240

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