Specifications

8
Install Ductwork
— Ductwork will be installed in the ERV
roof curb for applications utilizing the drop-in damper box. The
duct will hang from the top of the curb. Refer to Fig. 7 to deter-
mine the duct size required. Provide field-manufactured duct
and place into the supply and return openings in the curb.
NOTE: Ductwork must be installed in the ERV curb before the
ERV unit is set in place.
NOTE: Drop-in damper box must be installed in the RTU curb
before the RTU is set in place.
Install Gaskets
— The ERV roof curbs come with a gasketing
package to provide a seal between the ERV unit and the top pe-
rimeter of the roof curb. Install the gasket around the top
perimeter of the curb and around the supply and return open-
ing. Gasket strips must fit tightly together, leaving no gaps for
leakage.
Install Roofing Materials
— Insulate and add a cant strip to
the roof curb. Follow suggested and acceptable roofing proce-
dures for applying roofing materials. The roofing material
should extend up to the wood nailer and be secured under the
counter flashing. Follow all local, national, and industry roof-
ing standards. Refer to Fig. 4 for roofing recommendations.
Install Drop-in Damper Box
— Place the damper box into the
RTU curb. Allow the damper box flanges to rest on the curb.
Secure the damper box in place with 1-in. self-tapping screws.
Install ductwork to connect the damper box to the ERV curb.
The upper damper box connection must be ducted to the ERV
supply air, and the lower damper box connection must be duct-
ed to the ERV exhaust air. See Fig 5. Refer to the drop-in
damper box dimensional sheets to determine the duct size
required. Your local Carrier sales representative can provide
you with this dimensional data.
IMPORTANT: Gasket installation is critical for water
integrity. Improperly installed gaskets can result in air or
water leaks, leading to poor unit performance.
Fig. 7 — 62EB-62EU Unit Curb Dimensions
62E
UNIT
TYPE
DIMENSION
A (in.)
DIMENSION
B (in.)
DIMENSION
C (in.)
B 27.221 24.721 10.861
C 34.721 32.221 14.611
D 40.521 38.021 17.511
E 50.721 48.221 22.611
H 63.141 60.641 28.821
K 73.721 71.221 34.111
L 78.721 76.221 36.611
62E
UNIT
TYPE
DIMENSION
A (in.)
DIMENSION
B (in.)
DIMENSION
C (in.)
M 85.721 83.221 40.111
N 91.721 89.221 43.111
P 96.721 94.221 45.611
R 104.721 102.221 49.611
S 108.721 106.221 51.611
T 115.721 113.221 55.111
U 121.721 119.221 58.111
NOTES:
1. All dimensions shown in inches.
2. Nailer sits even with top of curb. Do not cover any existing holes with nailer.
14.000
"A"
I.D.
"A"
I.D.
"C"
TYP. 2X
"B"
TYP. 2X
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