AAON RSMZ User Manual

14
RSMZ Technical Guide
WIRING
Subcool Monitor Module
Subcool Monitor Module Wiring
The use of the Subcool Monitor Module is optional. The Subcool
Monitor Module reads the Liquid Line Temperature Sensors to
calculate subcooling. This module can be congured to work with
R410-A, R22, and R134a refrigerant and can also be congured
for the following pressure transducers—250 psi, 500 psi,
and 667 psi.
The Subcool Monitor Module is connected to the AAON
unit controller. One or two Subcool Monitor Modules can be
connected, depending on the size of the system.
The Subcool Monitor Module contains a 2 x 8 LCD character
display and four buttons that allow for status and alarm display.
The Subcool Monitor Module must be connected to an 18-30
VAC power source.
See Figure 7, this page for wiring.
1
1
0
0
A
A
2
2
5
5
0
0
V
V
A
A
C
C
~
~
5
5
A
A
3
3
0
0
V
V
D
D
C
C
S
S
A
A
V
V
D
D
E
E
G
G
5
5
Q
Q
-
-
1
1
A
A
4
4
O
O
M
M
R
R
O
O
N
N
D
D
C
C
1
1
2
2
V
V
C
C
H
H
I
I
N
N
A
A
BK
RD
WH
BK
RD
WH
BK
RD
WH
18-30 VAC
GND
Line Voltage
Size transformer for correct total load.
Subcool Monitor Module = 18 VA
Liquid Line
Pressure
Transducer 1
Liquid Line
Pressure
Transducer 2
Liquid Line
Pressure
Transducer 3
Sensor #2
Liquid Line Temp
Liquid Line Temp
Sensor #1
Liquid Line Temp
Sensor #3
ALARM
UP
DOWN
ENTERMENU
Figure 7: Subcool Monitor Module Wiring
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.

AAON RSMZ Specifications

General

Brand	AAON
Model	RSMZ
Category	Control Unit
Language	English