Greenheck PVe (472846) - Manual (Page 6)

6 Model PVe Heat Recovery Unit
Curb Cap Details for Factory Supplied Roof Curbs
4.844
1.549
0.775
Insulation Pan
Unit Base
Roof Curb
Dimensions are shown in inches.
1.895
Unit Side
Unit Size L W
Curb Weight
(lbs.)
PVe-20 99.4 36.8 195
PVe-35 99.4 44.6 216
PVe-45 105.9 56.3 261
PVe-55 111.7 71.3 316
All dimensions are shown in inches.
L
W
Curb Outside Dimensions and Weights Roof Curb Mounting
Rooftop units require curbs to be mounted first, in
accordance with their appropriate instructions. Curb
unit is to be installed and then duct connections are to
be made prior to setting of the unit.
Position the unit roof opening such that the supply
discharge and exhaust inlet of the unit will line up with
the corresponding ductwork. Be sure to allow for the
recommended service clearances when positioning
opening.
Do not face the outdoor air intake of the unit into
prevailing wind and keep the intake away from any
other exhaust fans. Likewise, position the exhaust
discharge opening away from outdoor air intakes of any
other equipment.
1. Factory Supplied Roof Curbs: Roof curbs are
Model GKD. The GKD ships in a knockdown kit
(which includes duct adapter) and requires field
assembly by others. Assembly instructions are
included with the GKD curbs.
2. Install Curb: Locate the assembled curb over roof
opening and verify precise location of curb relative
to the roof opening, in accordance with dimensions
given previously. Fasten curb loosely in place and
then shim as needed to ensure a level installation.
Tighten roof fastening hardware and then recheck
for level. Verify that diagonal dimensions of installed
curb are plus or minus 1/8-inch of each other.
3. Install Ductwork: Install needed ductwork in
accordance with SMACNA and AMCA guidelines.
Duct adapter is provided to support ducts prior to
setting the unit.
4. Install Insulation: One-inch deep insulation
pans are provided with the curb assembly. Set the
insulation pans per instructions and then install
insulation in the pans prior to setting the unit.
Insulation is not provided by the unit manufacturer, it
is to be supplied by others.
5. Set the Unit: Lift unit to a point directly above the
curb and duct openings. Guide unit carefully while
lowering in order to align with duct openings. The
roof curb will seat in a recess in the base of the unit.
Verify that the unit is properly seated on the curb and
is level.