Hood Surface
0.75 to 0.875 inch
(19.0 to 22.2 mm) diameter hole
1/4-inch Compression Seal PN 463570
2 inches (50.8 mm)
Hood Exhaust Collar Front Side
0.75 to 0.875 inch
(19.0 to 22.2 mm) diameter hole

Installation

Control Box Mounting

Locate an area with enough space to mount the control box and fasten to the wall.

NOTE

Control box may be factory mounted. If so, continue to the next section.

5.Place the resistive temperature detector through the compression seal and tighten the compression

fitting.

6.Install the cover for the octagon box.

Resistive Temperature

Detector (RTD)

PN 384439

Octagon Extension

PN 830125

Octagon Cover

PN 380926

Resistive Temperature Detector(s) (RTD) Mounting

NOTE

Resistive temperature detector(s) may be factory installed. If so, continue to the next section.

1.Locate flat area(s) at the top interior of the hood in front of the filters, towards the front of the hood.

19.525 inches

 

3 inch air space

 

Duct Collar Mounting

1.Locate the exhaust duct on top of the hood. A 3/4 to 7/8-inch (19.0 to 22.2 mm) diameter hole must be cut into the duct 2 inches (50.8 mm) above the hood top. Center

the hole along the side of the duct. Make sure that the resistive temperature detector will not interfere with any

Exhaust Area

Sensor Install

(cutout area)

Supply Area

(optional)

TITLE

Top View of Exhaust Hood

2 inch typical

P.O.BOX 410 SCHOFIELD

INSTR, ADJ

fire system nozzles, or other items installed in the exhaust duct. If an exhaust fire damper is present the hood exhaust collar, it must be removed prior to temperature sensor installation.

2.Place the J-box plate inside of the octagon extension ring and place over the hole in the exhaust collar.

3.Disassemble the compression seal and place

through

hole in duct

 

 

 

Octagon Extension

collar and

 

Quik Seal

 

PN 830125

 

 

 

 

 

 

 

2. Cut a 3/4 to 7/8-inch diameter hole in the flat spot of the capture tank. Make sure the resistive temperature detector(s) will not interfere with fire

system nozzles and is not within 12 inches of light fixtures.

3.Place the J-box plate inside of the octagon extension ring and place over the hole.

4.Disassemble the compression seal and place through hole and J-box plate as shown. Tighten the nut inside the octagon extension ring.

Compression Seal

PN 463570

Gasket

 

Octagon Extension

 

PN 830125

 

 

J-Box Plate

PN 732396

Lock Washer

Nut

J-box plate

Gasket

 

as shown.

J-Box Plate

Tighten the

PN 732396

Lock Washer

nut inside

 

the octagon

Nut

extension

 

ring.

 

4. Place the resistive temperature detector

through the

 

compression

 

seal and

 

tighten the

Octagon Cover

compression

PN 380926

 

fitting.

 

5. Install the

Resistive Thermostat

cover for the

Detector (RTD)

octagon box.

PN 384439

 

NOTE

All field installation and wiring of electrical equipment must be done to meet NEC and local codes.

®

Digital Temperature Interlock 3

Page 3
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Greenheck Fan 474750 specifications Installation, Control Box Mounting

474750 specifications

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