Installation
WSHP-SVX01Q-EN
55
Supply-Air Ductwork
Horizontal .5 to 5 ton and EXHF units require duct flanges
to be field installed.The duct flange ships in a box on the
side of the unit. Install the flange with (8) 3/8 in. factory
supplied screws.
Install the 1 in. supply-air duct flange to the vertical and
horizontal equipment with the (8) 5/16 in. factory-supplied
screws.The duct collar assembly for each unit is shipped
with the unit in the same box where the IOM manual is
located.
When attaching the field ductwork to the unit, provide a
watertight flexible connector at the unit to prevent
operating sounds from transmitting through the
ductwork. See
Figure 47, p. 55
.
Elbows with turning vanes or splitters are recommended
to minimize air noise due to turbulence and to reduce static
pressure.
Return-Air Ductwork
Install the 1”-2” adjustable filter rack to the horizontal
equipment with the use of (4) 5/16 in. factory supplied
screws.The vertical equipment factory ships with the filter
rack and filter(s) installed.
When attaching the field ductwork to the unit, provide a
water-tight flexible connector at the unit to prevent
operating sounds from transmitting through the
ductwork.
Elbows with turning vanes or splitters are recommended
to minimize air noise due to turbulence and to reduce static
pressure.
Ducted Panel
The return-air arrangement may be easily converted from
a free return-air system, to a ducted return-air system with
the addition of a return-air side panel. By replacing the
filter racks with the return-air panel, a complete seal from
the duct to the unit is possible. The 1.5 duct flange
facilitates ease of field connection to the duct system.This
accessory is typically used when the return-air filter is
placed in a built-in ceiling grille, or placed within a field
provided filter rack assembly.
Figure 47.
Flexible supply-air connector (field provided)
GEH supply duct
1-inch Duct Collar
(Factory Provided)
Supply-Air
Boot (Field Supplied)
Figure 48.
Flexible return-air connector (field provided)
GEV return duct
Figure 49.
Return-air duct panel
Table 37.
Opening size and part number GEH
Unit Size
(60 Hz)
Unit Size
(50 Hz)
A
B
Duct Collar
Part Number
006-015
006-012
17.5 in.
13 in.
4474 1133 0100
018-030
015-024
20.5 in.
16 in.
4474 5628 0100
035-042
030-036
22.5 in.
17 in.
4474 1135 0100
048-060
042-060
26.5 in.
19 in.
4474 1136 0100
SUPPLY-AIR
RETURN
AIR
Filter Flange
(Factory Provided)
Return-Air Boot
(Field Provided)