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Roof Curb Mounting
Roof curb details, including duct location dimensions,
are available on VER roof curb assembly instructions.
Rooftop units require curbs to be mounted first. The
duct connections must be located so they will be clear
of structural members of the building.
1. Factory-Supplied Roof Curbs
Roof curbs are Model GKD, which are shipped in a
knockdown kit (includes duct adapter) and require
field-assembly (by others). Assembly instructions are
included with the curb.
2. Install Curb
Locate curb over roof opening and fasten in place.
Check that the diagonal dimensions are within
±1/8 inch of each other and adjust as necessary.
For proper coil drainage and unit operation, it is
important that the installation be level. Shim as
required to level.
3. Install Ductwork
Installation of all ducts should be done in
accordance with SMACNA and AMCA guidelines.
Duct adapter provided to support ducts prior to
setting the unit.
4. Set the Unit
Lift unit to a point directly above the curb and duct
openings. Guide unit while lowering to align with duct
openings. Roof curbs fit inside the unit base. Make
sure the unit is properly seated on the curb and is
level.
10
VersiVent Energy Recovery Ventilator
Rail Mounting and Layout
• Rails designed to handle the weight of the VER
should be positioned as shown on the diagram (rails
by others).
• Make sure that rail positioning does not interfere with
the supply air discharge opening or the return air
intake opening on the VER unit.
• Rails should run the width of the unit and extend
beyond the unit a minimum of 12 inches on each
side.
• Set unit on rails.
Isometric View
Return Air
Intake
A
B
Side View
Unit
A
B
33.8 w/IG
VER-45
53.3
16
27 w/o IG
31.0 w/IG
VER-65
58.1
16
30 w/o IG
33.8 w/IG
VER-90 105.3
16
34 w/o IG
All dimensions shown in inches.
IG = Indirect Gas
CS = Condensing Section
Rails are positioned in random places.
See table for proper location
Supply Air
Discharge
C
D
C
D
9.2 IG w/o CS; 37.1 IG w/CS
5.2 w/o IG and CS
33.1 w/o IG and w/ CS
9 IG w/o CS; 36.9 IG w/CS
4.6 w/o IG and CS
32.5 w/o IG and w/ CS
9.2 IG w/o CS; 37.1 IG w/CS
3.7 w/o IG and CS
31.6 w/o IG and w/ CS
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