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Product Specification

Temperature Interlock

International Mechanical Code (IMC) 2015 Section 
507.1.1 compliant electrical package. 

Provide Accurex, LLC temperature interlock electrical 
package as shown on plans and in accordance with the 
following specification:

The temperature interlock(s) consists of a time delay 
relay, adjustable thermostat, junction box, fire proof/
leak proof threaded fitting (Evergreen Quik-Seal® and/
or Evergreen Compression Seal), and shall be a self-
contained unit or as part of another pre-engineered 
electrical control package.

The temperature interlock package shall close a time 
delay relay powering the fans when the set temperature 
is reached at the thermostat. The interlock shall hold the 
circuit closed upon fan switch being turned off until the 
temperature at the sensor decreases below the set point 
at which point the timed relay will begin a countdown. 
Once the countdown has expired and as long as the 
temperature has remained below the set point, the fans 
shall shut down.

The temperature interlock package shall be constructed 
by Accurex, LLC and operate in accordance with 
International Mechanical Code.

Due to continuous research, Accurex, LLC reserves the 
right to change specifications without notice.

WARNING

Electrical shock hazard. Can cause equipment 
damage, personal injury or death. Service must only 
be performed by personal that are knowledgeable in 
the operation of the equipment being controlled.

CAUTION

Always disconnect power before working on or near 
the product. Lock and tag the disconnect switch or 
breaker to prevent accidental power up.

CAUTION

It is the responsibility of the installer to make sure both 
electrical and gas appliances shut down in the event 
of a fire or in the event of a power loss to the building 
when this sequence is required by the authority having 
jurisdiction.

General Safety Information

Only qualified personal should install this product.  
Personnel should have a clear understanding of these 
instructions and should be aware of general safety 
precautions. Improper installation can result in electric 
shock and other potential hazards.

1.  Follow all local electrical and safety codes, as well as 

the National Electrical Code (NEC) and latest edition 
of the National Fire Protection Agency Standard for 
Ventilation Control and Fire Protection of Commercial 
Cooking Operations (NFPA 96). Follow the Canadian 
Electrical Code (CEC) and ULC-S650 if installing this 
product in Canada.

2.  Do not allow the electrical components of this 

product to come in contact with oil, grease, hot 
surfaces, water, or chemicals.

3.  Verify the site can supply the necessary power for 

each fan and for the control panel.

Temperature Interlock

1

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, 
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure 
to comply with these instructions will result in voiding of the product warranty and may result in personal injury 
and/or property damage.

Document 473592

Temperature Interlock

Содержание Temperature Interlock

Страница 1: ...r before working on or near the product Lock and tag the disconnect switch or breaker to prevent accidental power up CAUTION It is the responsibility of the installer to make sure both electrical and gas appliances shut down in the event of a fire or in the event of a power loss to the building when this sequence is required by the authority having jurisdiction General Safety Information Only qual...

Страница 2: ...consists of a time delay relay adjustable thermostat junction box and a UL Listed liquid tight fitting The relay can be contained in a stand alone box or can be added to a pre engineered fan control center Purpose To meet IMC an interlock between exhaust fans and cooking equipment must be present for all Type I hood systems This product will utilize a thermostat in the exhaust duct collar or in the...

Страница 3: ...ntrol Box Mounting Installation Locate an area with enough space to mount the control box and fasten to the wall Avoid installing the control box in environments with high magnetic and or radio frequency interference Hood Plan View 19 525 inches 495 9 mm 3 inch air space 76 2 mm 2 inch typical 50 8 mm Exhaust Area Supply Area optional Sensor Install cut out area 2 Find a suitable location for the ...

Страница 4: ...e suppression nozzles or other items installed in the ducts If an exhaust fire damper is present in the hood exhaust collar it must be removed prior to temperature sensor installation A 11 8 to 1 inch 28 6 to 31 8 mm diameter hole must be cut into the duct 2 inches 50 8 mm above the hood top 2 Place the J box plate inside the octagon extension ring and place over the hole in the exhaust collar 3 Di...

Страница 5: ...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...

Страница 6: ...pen NO of fire system microswitch mentioned in item 3 above to terminal block CP1 5 Run three 3 low voltage wires 18 gauge from MUA unit control center down to temperature interlock panel a Terminal block R in MUA connects to terminal block CP1 in temperature interlock panel b Terminal block H in MUA connects to terminal block CP2 in temperature interlock panel c Terminal block G in MUA connects to...

Страница 7: ... back of the thermostat Use a small blade screwdriver to make the adjustments 1 Turn counterclockwise to increase the temperature set point turn clockwise to decrease the temperature set point 2 Quarter revolution in either direction corresponds to a 22 5 F 5 3 C adjustment Be sure to make small adjustments about 1 16 of a turn 6 F or less at one time 3 Do not exceed more than one half revolution ...

Страница 8: ...D red PR purple FIELD WIRING BK black BL blue UNLESS SPECIFIED BR brown FACTORY WIRING Shunt Trip Breaker Neutral Starter Switch Light Ground Fire MicroSwitch Exhaust Fan Supply Fan Overload Contactor TDR TS1 12 Time Delay Relay Temperature Sensor LABEL DESCRIPTION WIRE COLOR ALL WIRING 90 C 14 GA USE MINIMUM 60 Copper Wire FIELD WIRING S1 CP1 CP2 FS FIELD WIRE FIRE SYSTEM MICROSWITCH NO NC C ST T...

Страница 9: ...a note as to where the time relay was originally set 3 Heat up cooking equipment with fans off Once the temperature reaches the set point of the thermostat the fans will start preferably within 5 to 10 minutes If the fans take more than 15 minutes to start decrease the temperature set point by turning the adjustment screw 1 16 turn clockwise Do not apply direct flame to the thermostat 4 If an adjus...

Страница 10: ...y Fans do not turn on quick enough Decrease temperature set point Maintenance Daily Clean thermostat with cloth and degreaser Keep clean for best performance Can clean weekly depending upon grease accumulation Weekly Dependant on grease production and grease filter type clean thermostat Seasonal May have to change temperature setting on back of thermostat if ambient kitchen temperatures fluctuate be...

Страница 11: ...se 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...

Страница 12: ... Accurex reserves the right to change specifications without notice Product warranties can be found online at accurex com either on the specific product page or in the Warranty section of the website at Accurex com Resources Warranty Our Commitment P O Box 410 Schofield WI 54476 Phone 800 333 1400 Fax 715 241 6191 Parts 800 355 5354 accurex com ...

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