53
VCCX2 Controller Technical Guide
Refrigerant System Module for VFD
Compressors - Heat Pump
The ASM01693 Refrigerant System Module for VFD
Compressors - Heat Pump (RSMV-HP) monitors and controls one
refrigeration circuit of the HVAC unit. The module is designed
for R410-A refrigerant.
The RSMV-HP is connected to the VCCX2 Controller. Up to
4 RSMV-HP’s can be connected, depending on the size of the
system. There are two E-BUS Expansion Ports which allow the
use of communicating sensors and E-BUS modules.
The RSMV-HP provides six analog inputs, four binary inputs,
four relays, and two analog outputs. See
Figure 34, this page
for inputs wiring and
Figure 35, page 54
for outputs wiring.
Suction Pressure Transducer
The ASM02222 Suction Pressure Transducer must be wired
as shown in
Figure 34, this page
. It is required for all comp-
ressorized VCCX2 applications.
18-30 VAC
GND
Line
Voltage
Size transformer for
correct total load.
RSMV = 18 VA
RSMV-HP
BK
RD
WH
BK
RD
WH
COMP STAT 1
COMP STAT 2
Coil Temp. 2
Sensor
Coil Temp. 3
Sensor
Coil Temp. 4
Sensor
COM
+
COM
+
COIL TEMP SWITCH / POF
Suction Pressure
Sensor
Head Pressure
Sensor
Coil Temp. 1
Sensor
Leaving Water
Temp Sensor
Modulating
Compressor
Condenser
Signal
Figure 34: RSMV-HP Inputs Wiring
WIRING
RSMV-HP Inputs
WARNING:
Observe Polarity! All boards must be
wired with GND-to-GND and 24 VAC-
to-24 VAC. Failure to observe polarity
will result in damage to one or more of the
boards. Expansion modules must be wired
in such a way that the expansion modules
and the controller are always powered
together. Loss of power to the expansion
module will cause the controller to become
inoperative until power is restored to the
expansion module.
