Unified Brands VENTILATION SYSTEMS - Manual (Page 12)

9
C.Dampers & Detectors [AW & optional AX
Models] [Fig. 13]
Terminal block in the damper housing is pre-
wired to a junction box above. The wires are
colorcoded; refer to field interconnection wiring
diagram. [Refer to enclosed control panel wiring
diagram]. Interconnection may be required
between damper housings.
Fig. 13
D.Ventilator Lights
A 120vac supply circuit must be supplied thru a
ventilator light switch to the ventilator. The light
switch may be supplied by AVTEC in the control
panel or on the hood. Interconnection may be
required between light fixtures.
V.PLUMBING CONNECTIONS
[AW Models] [Refer to fig. 14]
The connections listed below are shown on page
8.
A.Hot Water Wash
140 o hot water is needed to properly clean the
extractor chamber. Supply is connected to the
control panel inlet. Control panel outlet is
connected to the ventilator inlet[s].
NOTE: A vacuum breaker and check valve must
be installed at least 6" above the ventilator inlet
to prevent back-up of detergent water into fresh
water supply.
B.Cold Water Mist [Optional]
Cold water supply is connected to the control
panel inlet. Control panel outlet is connected to
the ventilator inlet[s].
C.Drain[s]
The drain pipe is connected at one or both ends
of the ventilator and run to an air gap assembly,
hub & funnel or open floor drain to act as an
anti-siphoning device. An air gap assembly is
recommended for the most sanitary and positive
connection. The air gap should be the same
size on the inlet end and one pipe size larger on
the outlet to avoid splash over.
D. Field Joints
Interconnection between field joints on AW
Hood attach with 2” elbows and expandable
coupler. [Refer to fig. 11]
Error! Not a valid link.
Fig. 11
E.Detergent Pump and Tank
Detergent pump tubing [plastic, copper or
stainless steel] must be provided from the
detergent pump outlet to an injection point
between the vacuum breaker/check valve and
the ventilator inlet. For larger installations
multiple pumps are used. Normally the
detergent pump and tank are located in the
control panel, and tubing from the detergent
pump to the detergent tank is factory connected.
In the application when the detergent pump and
tank are located in a remote area, tubing is
provided for connection from the pump to the
tank.
Pumps may be pre-wired in control panel or
Energy Distribution System, or located remotely.
Detergent tank must always be located within 5
ft. of the pump.
F.Interconnecting
Depending on specifications, some ventilator
sections may require interconnection of hot
water, cold water or drains. See shop drawing
in back of this manual for detail.