Greenheck Digital Temperature Interlock (474750 IOM) (Pre November 2012) - Manual (Page 4)

4 Digital Temperature Interlock
®
Calibration
The temperature controller is preset by the factory
to turn the fans on at 95°F. This is controlled by
the set point on the temperature controller. The
temperature set point may have to be adjusted slightly
depending on both ambient and cooking conditions.
The adjustment is made through the buttons on
the temperature controller. To adjust, follow these
instructions:
1. Press the SET button to see the set point.
2. Press the UP/DOWN arrow button to change the
set point.
3. Press the SET button to view the current
temperature.
4. Check system operation before making additional
adjustments.
Electrical Connections
Electrical Connections
1. Run two 18 awg thermostat wire from each
temperature sensor to the appropriate electrical
circuit connections. (See Step 3 for connection
options).
2. In junction box, connect leads on RTD to the
18 awg conductors using appropriate size
wire nuts.
• Wires are interchangeable with one another.
3. Choose the final connection based on:
• Terminals T3, T4, T5, T6, T7, T8 (if applicable) in
fan control center (KFCC).
• Terminals 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 (if
applicable) in control box on top of hood/utility
cabinet.
CAUTION
Do not connect temperature sensor in series
with fan power. This will result in damage to the
temperature sensor and will require replacement.
Breaker Panel to Control Box or Fan Control
Center
1. Connect a Single Pole Single Throw (SPST) switch
to one of the following based on application:
• Terminals 3 & 4 in the control box.
• Terminals S1 & S1H in the fan control center.
Circuit Connections
1. Standard Interlock Control
• 120V, 10 or 15 amp circuit to terminals 1 & 2
• Control voltage for fan starter activation
– 120V, 24V or other control circuit
(drawing on page 5)
• Control circuit power to terminal 7
• Terminal 8 to fan starter coils
• Terminals 7 & 8 to fan starter coils
2. Fan Control Center Integration (KFCC)
• Power to H1 & N1 in fan control center
• No additional control circuits are required fan
starters are factory wired