Accurex Temperature Interlock Installation, Operation And Maintenance Manual - Page 5

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Electrical Connections

All wiring of electrical equipment must be done to meet NEC and local codes.
All field wire must be high temperature rated. All 115 VAC field wiring (or higher) must be routed through hard or
flex conduit. All low voltage field wiring should be plenum rated if not routed through conduit. Field wiring should
not come in contact with the surface of the hood. To reduce the likelihood of electromagnetic disturbance, avoid
routing high and low voltage cables in the same cable conduit.
Temperature interlock may be integrated into the kitchen fan control center (XFCC). The electrical information
below pertains to stand-alone temperature interlock packages only. For more details on wiring the XFCC, please
refer to the proper IOM which can be found on the Accurex website, www.accurex.com.
All Fan Starters Provided by Others
1. Wire 115 VAC power from non-shunted breaker to terminal blocks H1 (hot) and N1 (neutral) in temperature
interlock panel.
2. Wire fan switch (either provided in field, shipped loose for remote install, or provided on hood/hood utility cabinet)
to terminal blocks S1H and S1 in temperature interlock panel.
3. Wire AC voltage needed to activate fan starters (115 or 24 VAC) to terminal block CP1 (hot).
4. Wire one side of all exhaust
fan starter coils to terminal
block CP2.
5. Wire common (C) of
dedicated fire system
microswitch to terminal
block CP2.
6. Wire normally open (NO)
to fire system microswitch
mentioned in item 5 above
to terminal block CP1.
7. Wire normally close (NC)
of fire system microswitch
mentioned in item 5 above
to one side of all supply fan
starter coils.
8. Wire the other side of all
exhaust fan and supply fan
starter coils back to neutral.
9. Wire thermostats in parallel
and connect between
terminal blocks T1-A and
T1-B (see Thermostat(s)
Sensors section for details).
CP1 and CP2 are dry contacts from the factory. The field
needs to wire AC power they want to use to activate their
fan starters to terminal block CP1. All exhaust fan starters
need to be wired between CP2 and a neutral. Contacts
used to make this connection on the time delay
relay are rated up to 125 VAC and 10 amps. Make
sure the control circuit does not exceed these ratings.
If exceeded, this can damage the contacts on the relay
which will require replacement.
115 VAC INPUT
HOT
POWER (POWERS
TIME DELAY RELAY)
NEUTRAL
115 OR 24 VAC
CONTROL POWER
HOT
(POWER USED TO
PULL IN MOTOR
NEUTRAL
STARTER COILS)
NOTE
NOTE
NOTE
NOTE
WIRE ALL THERMOSTATS IN PARALLEL
(IF APPLICABLE)
TSTAT 1
TSTAT 2
T1-A
T1-B
H1
TEMPERATURE CONTROL BOX
N1
CP1
S1H
TOGGLE FAN
FIRE SYSTEM MICROSWITCH
(IN FIRE SUPPRESSION RELEASE)
(IF APPLICABLE)
TSTAT 3
S1
CP2
SWITCH
EXHAUST FAN
STARTER COILS
COM
NO
NC
SUPPLY FAN
STARTER COILS
Temperature Interlock
5