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Installation
Table 39. Ducted filter opening size - 0.5 to 5 tons (continued)
Unit Size
GEH/V 048-060
Note: All dimensions in inches. GEH/V dimensions are for accessory 2 or 4–inch Filter Rack.
Sound Attenuation Pad
For sound-sensitive installations, a vibration pad (field
provided) should be placed beneath the horizontal or
vertical equipment. For the horizontal unit, the pad should
be approximately twice the size of the unit foot print. For
the vertical unit, the pad should be 0.5 in. (12.7 mm) thick,
and equal to the overall unit foot print.
Hanging the Horizontal Unit
WARNING
Proper Structural Support Required!
Failure to ensure proper structural ceiling support
could result in unit falling from its location which
could result in death or serious injury.
Ceiling structure must be strong enough to support
the weight of the unit and any accessories. If unsure,
check with a structural engineer.
To hang the horizontal configuration (see the figure below):
1. Install the hanging isolators (located in the return-air
section of the unit) into the six hanging brackets.
2. The base of the unit (hanging rails) must be fully
supported while unit is being lifted for install. This can
be achieved by using a lift with a large enough
supporting surface, or a wooden structure can fully
support the base if desired.
3. Secure the equipment to a joist, concrete, etc. with the
use of 3/8 in. (9.7 mm) field provided (all-thread) rod.
Each rod should contain field provided nuts and
washers to complete the hanging installation.
4. Slope 6 to 25 ton horizontal units in two directions. The
unit should contain a dual 0.25-12 pitch toward the
drain connection. This will insure proper drainage of the
unit. All plumbing to the unit should conform per
national and local codes and is the responsibility of the
contractor. The 0.5 to 5 ton horizontals and GEHG
models do not need to be sloped. GEHG 0.5 to 5 ton
models must be installed level.
Notes:
•
Rods must be perpendicular to the mounting
holes in the base rail of the horizontal unit.
•
For 0.5 to 5 ton GEHE models, follow pitching
instructions from previous generation IOM.
50
A (in.)
30.00
Figure 48. Hanging the unit
Condensate Drain Connection
Figure 49. Negative pressure system
Install proper trapping to the equipment. The unit drain
connection is 0.75 in. NPT for all GEV 0.5 to 25 ton and
GEH 0.5 to 5 ton models. For 6 to 15 ton GEH models, the
drain connection is 0.5 in. PVC schedule 40 pipe.
When designing the condensate trap for the water-source
system, it is important to consider the unit draw-thru design
requiring negative pressure trapping.
In a properly trapped system, when condensate forms
during normal operation, the water level in the trap rises
until there is a constant flow. It is imperative to maintain
water in the trap and not allow the trap to dry out during
heating season. Keeping trap primed at all times will
enable the water to flow properly. See the figure above for
appropriate dimensions required in a negative pressure
system.
B (in.)
20.25
CLEAN OUT
(CAPPED and SEALED)
C (in.)
6.60
WSHP-SVX01AC-EN
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