Installation
WSHP-SVX01L-EN
53
Supply-Air Ductwork
Horizontal ½-5 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. (213 mm)
factory supplied screws.
Install the 1 in. (25.4 mm) supply-air duct flange to the
vertical and horizontal equipment with the
(8) 5/16 in. (7.94 mm) factory-supplied head 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 46, p. 53
.
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 (25.4 mm/50.8 mm) adjustable filter rack to
the horizontal equipment only with the use of (4) 5/16 in.
(7.94 mm) factory supplied head 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. See
Figure 47, p. 53
.
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 1½ duct flange
facilitates ease of field connection to the mechanical
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 46.
Flexible supply-air connector (field provided)
1-INCH DUCT COLLAR
(FACTORY PROVIDED)
SUPPLY-AIR
BOOT (FIELD
SUPPLIED)
Figure 47.
Flexible return-air connector (field provided)
Figure 48.
Return-air duct panel
Table 33. Opening size and part number GEH
Unit Size
(60 Hz)
Unit Size
(50 Hz)
A
B
Duct Collar
Part Number
006-015
006-012
17½ in.
(445 mm)
13 in.
(330 mm)
4474 1133 0100
018-030
015-024
20½ in.
(521 mm)
16 in.
(406 mm)
4474 5628 0100
036-042
030-036
22½ in.
(572 mm)
17 in. (432
mm)
4474 1135 0100
048-060
042-060
26½ in.
(673 mm)
19 in. (483
mm)
4474 1136 0100
SUPPLY-AIR
RETURN
AIR
DUCT COLLAR
(FACTORY PROVIDED)
RETURN-AIR BOOT
(FIELD PROVIDED)
Summary of Contents for Axiom EXH018
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