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SRC-131 Hotel Controller Manual
5
3
Installation
3.1
System Design
Great effort has been taken to make the SRC-131 system intuitive, reliable and easy to install.
Using a common sense approach to the installation will ensure this product is installed easily and
to the customer’s satisfaction. Please read and understand this instruction manual so that installation,
testing and commissioning process is undertaken in an efficient and effective manner.
3.2
Opening Wall Controller
Open the SRC-131 wall controller by placing a flat blade screwdriver
or coin in the slot on the bottom of the thermostat case (1) and gently
twist (2) to release the case locking clip. Gently pry the two case halves
apart at the base taking care not to twist the case as this may crack the LCD.
3.3
Mounting Wall Controller
The SRC-131 should be mounted in a convenient location at approximately
1.2 to 1.5 meters from the ground. It should be located in a “typical” location
where it will sense the accurate room temperature and not be effected by
direct sunlight or drafts.
It is highly recommended that any penetrations in the wall where wiring may pass for example be sealed to
prevent drafts entering the rear of the thermostat and effecting the room temperature sensor.
3.4
DIP Switch Settings
Switch
Function
On
Off
Sw1
Indoor Fan Mode
3 Fan Speed
1 Fan Speed
Sw2
Equipment Type
Heat Pump
Heat Cool
Sw3
HP Mode (Sw2= ON)
HC Mode (Sw2=OFF)
Rev Valve Heat (B)
HE – Fan With Heat
Rev Valve Cool (O)
HG – No Fan In Heat
Sw4
2/4 Pipe Mode
2 Pipe Mode
4 Pipe Mode
Sw5
Comp Protection Delay 5 Min Anti Cycle
Immediate Comp Start
Sw6
Klixon Mode
On
Off
Sw7
Ventilation Mode
Permitted
Not Permitted
Sw8
Door Station (Optional) Fitted
Door Station Not Used
Note: The SRC-131 reads the switch settings on power up only. If you change any DIP switch settings
you must cycle power or press the reset button before these changes will take effect.
It is expected that only qualified people will make adjustment to these dip switch settings. Knowledge of the
HVAC system under the control of the SRC-131 is essential prior to making adjustment to these DIP switch
settings.
3.5
Wiring – HVAC Control Terminal Designations
Terminal
Function
C
24V Neutral
R
24V Active - This voltage is switched back through the relays
Hi
Indoor Fan High Speed (
NOT Used
in Single fan speed mode - Sw 1 = OFF)
Med
Indoor Fan Medium Speed (
NOT Used
in Single fan speed mode - Sw 1 = OFF)
Low
Indoor Fan Low Speed (Used in single & three fan speed mode)
Y
Compressor or Cool - (Based on Sw 2 setting)
W - O/B
Reversing Valve or Heat - (Based on Sw 2 setting)
A1 – Cool
0-10V Output for Cooling (Typically used to control modulating valves)
A2 – Heat
0-10V Output for Heating (Typically used to control modulating valves)
A3 – Fan
0-10V Modulating Output for Indoor DC Fan
