Frequently Asked Questions
What temperature is the thermostat set from the
factory?
95º
Fahrenheit.
Will the temperature interlock automatically start/
stop the fans?
When connected properly to fan starters the
temperature interlock will automatically control
the fans without input from the user. However, it is
intended to be used as a back-up to manual control.
May I connect the power going to my fan directly
through the control box?
No, the control box should only use control voltage
only (24-115 VAC), and a separate 115 VAC power
source is required to run the temperature interlock
controls. Accurex recommends the use of starters
sized for each fan.
What is the purpose of the timed relay in the control
box?
The timed relay is used to delay the shut down
of the fans to prevent fan on/off cycling while the
temperature in the exhaust duct can reach steady
state. Without the delay, cycling could occur both on
startup or shutdown of cooking equipment. The delay
is typically set at 20 minutes.
Can I use one control box for multiple hood systems?
This can be done, however, it is not recommended.
Any one of the thermostats would turn on all hoods
running on that control box. It is better to have one
hood/fan per control box, plus a significant energy
savings can be obtained if one or more of the hoods
is not in operation.
Can I still turn my fan on and off?
Yes, the temperature interlock is designed to be
operated with a typical on/off switch. The fan may not
turn off immediately after turning the fan switch off, it
will sense when the cooking operations have cooled
and then turn off.
Replacement Parts
Part
Number
Description
383923
Thermostat, Vulcan
1C2B9 5/8-inch Type C
451168
Evergreen Quik-Seal, 1/2-inch
#171 (1-1/8 inch hole size)
830125
Extension, Octagon (drilled)
SC55151-1/2 (380928)
380926
Cover, Octagon Box
SC#54-C-1RACO 722
732396
J-Box Plate
384905
Terminal Block, Single Pole,
DIN-RAIL MT, ABB ZS6
384908
Jumper, DIN-RAIL
Terminal Block 2 Pole ABB JB6-2
383271
Time Delay Relay SSAC
#KRDB424 SPST 1-100 min.
452614
Evergreen Compression Seal,
5/8-inch, #302
Codes and Standards Compliance
• UL
710
• National Fire Protection Association (NFPA 96)
• International Mechanical Code (IMC)
Temperature Interlock
11
