25
RW SERIES REVERSIBLE CHILLER INSTALLATION MANUAL
Inputs and Outputs Confi guration
DUAL STAGE WW
Input Name
Input
Output Name
Output
Entering Load Water Temperature
AI 1
Compressor 1
DO1
Leaving Load Water Temperature 1
AI 2
Compressor 2
DO2
Source Heating Freeze Detection 1
AI 3
Reversing Valve
DO3
Source Heating Freeze Detection 2
AI 4
Accessory
DO4
Load Cooling Freeze Detection 1
AI 5
Compressor 1 Alarm
DO5
Load Cooling Freeze Detection 2
AI 6
Compressor 2 Alarm
DO6
Network Output
DO7
Load Flow Proving Switch
DI 1
Network Output
DO8
Emergency Shutdown
DI 2
Network Output
D09
Stage 2 Low Pressure
DI 3
Source Htg Freeze Detection Select - 30ºF
DI 4
Future
PWM1
Load Htg Freeze Detection Select - 30ºF
DI 5
Future
PWM2
Stage 1 Low Pressure
DI 6
Thermostat Y1
DI 7
Thermostat Y2
DI 8
Thermostat B
DI 9
Source Flow Proving Switch
D10
Stage 1 High Pressure
DI11
Stage 2 High Pressure
DI12
XP10 Expansion Card
Input Name
Input
Output Name
Output
Entering Source Water Temperature
AI 1
Unused
DO 1
Leaving Source Water Temperature 1
AI 2
Unused
DO 2
Current Switch 1 - Compressor 1
AI 3
Unused
DO 3
Current Switch 2 - Compressor 2
AI 4
Unused
DO 4
Unit Display and Interface
The Unit Display allows the user to view entering and leaving water temperatures, freeze detection readings, inputs and outputs, and
allows the user enable and disable certain control functions through the various menus. The interface also displays all faults on the LCD
once the unit has locked out to aid in diagnostics.
There are 10 LED indicator lights that indicate the following:
Power - Shows that the FX processor is
operational
Alarm - Lights when there is a
lock-out or faulty freeze
detection sensor
1 - Flashing shows Compressor 1
is running
2 - Flashing shows Compressor 2
is running
3 - On shows Compressor 2 is lead
4 - On shows Reversing valve in cool
8 - On shows unit in ‘Test’ mode
Figure 5 - Unit Display/Interface
Escape Key
Return Key
Directional Keys
LEDs
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