Electrical-Accessories; Water Valve Wiring - Heat Controller R-410A Installation, Operation & Maintenance Manual

Installation & Operation

Electrical-Accessories

Accessory Connections
A terminal paralleling the compressor contactor coil has been
provided on the CXM control of the HWW line. "A" has been
provided to control accessory devices, such as water valves,
electronic air cleaners, humidifiers, etc. Note: This terminal
must be used only with 24 Volt signals and not line voltage
signals. This signal operates with the compressor contactor.
Water Valve
High Pressure
See the wiring schematic for details.
Relay 3
Switch NC
Coil
� WARNING! �
Never jumper terminal "A" from CXM board #1 to CXM
board #2 on multi-compressor/control bound units. See
Figure 6 in electrical section of this document for motor-
ized valve wiring.
Figure 6: Field Wiring of 24 Volt Motorized Valve of Units Size 120
VR 1
Water Valve
Coil
High Pressure
Relay 3
Switch NC
Coil
Notes - Disconnect red wire at refrigerant HP switch connect to N.O. contact,
connect new red wire from N.O. contact to refrigerant HP switch.
Valve Relay 1, 2 - 13B0001N01 (SPDT) VR1, VR2
Valve Relay 3 - 13B0004N01 (DPDT) VR3
VR 1
Coil
Water
High Pressure
Switch NC
Notes - Disconnect red wire at refrigerant HP switch connect to N.O. contact,
connect new red wire from N.O. contact to refrigerant HP switch.
Valve Relay 1, 2 - 13B0001N01 (SPDT) VR1, VR2
Valve Relay 3 - 13B0004N01 (DPDT) VR3
Water
High Pressure
Switch NC
WATER-TO-WATER (HWW) SERIES
RED
Valve
Relay 3
Coil
Valve
Relay 3
Coil
RED
24 Volt Accessory Wiring for Units Size 036 and 060
CXM Terminal Strip
VR3
NO
Refrigerant
RED
RED
HP Switch
6
8
Circuit #1
VR3
NO
Refrigerant
RED
HP Switch
6
8 Circuit #1
VR2
Coil
VR3
NO
Refrigerant
RED RED
HP Switch
6
8 Circuit #1
VR2
Coil
VR3
NO
Refrigerant
RED
HP Switch
6
8 Circuit #1
15
Heat Controller, Inc.
These terminals may be
used to power 24 volt
water valves on units
size 036, 060
VR3
NO
Refrigerant
RED RED
HP Switch
2
4 Circuit #2
VR3
NO
Refrigerant
RED RED
HP Switch
2 4
Circuit #2
VR3
NO
Refrigerant
RED RED
HP Switch
2
4 Circuit #2
VR3
NO
Refrigerant