Thermostat - hood mounting – Greenheck Kitchen Fan Control Center (475730) User Manual

Page 4

Kitchen Fan Control Center

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 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 collar and J-box plate as shown. Tighten
the nut inside the octagon extension ring.

4. Place the resistive temperature detector through the

compression seal and tighten the compression ﬁtting.

5. Refer to Electrical Connections section for

instructions on wiring the temperature sensor.

6. Install the cover for the octagon box.

2 inches
(50.8 mm)

Hood Exhaust Collar
Front Side

0.75 to 0.875 inch
(19.0 to 22.2 mm)
diameter hole

Octagon Extension
PN 830125

Lock Washer

Nut

1/4-inch Compression Seal
PN 463570

J-Box Plate
PN 732396

Gasket

Temperature Sensor (RTD)
PN 384925

Octagon Cover
PN 380926

Resistive Temperature Detector(s)
- Duct Collar Mounting

NOTE

The resistive temperature detector(s), or RTD(s), will
be provided only if the digital temperature interlock
option was configured/ordered with the unit. If it
wasn’t, continue to the next section.

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

NOTE

The thermostat will be provided only if the thermostat
style temperature interlock option was configured/ordered
with the unit. If it wasn’t, continue to the next section.

The thermostat may be factory installed. If so,
continue to the next section.

Thermostat - Hood Mounting

Hood Plan View

19.525 inches

3 inch air space

2 inch typical

Exhaust Area

Supply Area

(optional)

Sensor Install

(cut out area)

1. Locate the ﬂat area(s) at the top interior of the hood in

front of the ﬁlters, towards the front of the hood. A 1

⁄

to 1¼ inch (

28.58 to 31.75 mm)

diameter hole must

be cut into the top of
the capture tank. Make
sure the thermostat
will not interfere with
the ﬁre system nozzles
and is not within eight
inches

(20.32 cm)

the light ﬁxtures.

2. Place the J-box plate inside of the octagon extension

ring and place over the hole.

3. Insert the Evergreen compression seal ﬁtting into the

hole from the inside the hood, making sure the gasket
is placed on the ﬁtting before inserting it into the
hole. Install the J-box plate, lock washer, and 1-1/2
inch (38 mm) nut over the threaded portion of the
compression seal ﬁtting and tighten securely.

Recommended thermostat mounting location is in the
ﬂat interior of the hood and at least 8 inches

(20.32 cm)

from light ﬁxture.

Hood Surface

(28.58 to 31.75 mm)

4. Place the thermostat detector through the

compression seal and tighten the compression ﬁtting
to 35 ft-lbs.