Installation
WSHP-SVX13C-EN
41
Sound Attenuation Pad
For sound-sensitive installations, a vibration pad (field
provided) should be placed beneath the vertical unit.The
pad should be ½ inch (12.7 mm) thick, and equal to the
overall unit foot print.
Hanging the Horizontal Unit
To hang the horizontal configuration (see
Figure 25, p. 41
):
1.
Install the hanging isolators (located in the return-air
section of the unit) into the six hanging brackets.
2. Secure the equipment to a joist, concrete, etc. with the
use of 3/8 in. field provided (all-thread) rod. Each
corner should contain field provided nuts and washers
to complete the hanging installation.
3. Slope horizontal units in two directions. The unit
should contain a dual ¼-12 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.
Condensate Drain Connection
Install proper trapping to the equipment. The unit drain
connection is ¾ in. NPT.
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
Figure 26, p. 41
for
appropriate dimensions required in a negative pressure
system.
Supply/Return Pipe Connections
Connect the supply and return hoses to the water-inlet
(from supply) and water-outlet (to return) of the unit. For
vibration isolation, it is recommended that flexible steel
braided hoses be installed instead of hard piping the
equipment to the main loop system.
Figure 27, p. 41
shows
Table 38. Ducted filter opening size
Unit
A B
C
VSV 024, 033
22.4”
25.7”
4.3”
VSV 042, 050
26.6”
30.7”
5.5”
VSV060
30.5”
40.1”
5.5”
WARNING
Risk of Unit Dropping!
You MUST mount the unit to an area of the ceiling
strong enough to support the weight of that unit. If
unsure, you MUST confirm with a structural engineer.
Failure to do so could result in unit dropping from the
ceiling which could result in death or serious injury, and
equipment damage.
Figure 25.
Hanging the unit
SUPPLY-AIR
3/8" ALL-THREAD
(BY OTHERS)
3/8" WASHER / NUT
(BY OTHERS)
RETURN-AIR
Figure 26.
Negative pressure system
Figure 27. Supply/return pipe connections
