Carrier 62E Installation, Supply/Exhaust Fan Options Physical Data SI, FAN Option Code

Table 2A — Supply/Exhaust Fan Options Physical Data — SI

FAN OPTION CODE

A

B

C

E

F

G

H

Wheels

1…128 x 110

2…128 x 110

1…400

1…500

2…500

3…500

4…500

Qty...Width (mm)

Nominal Motor kW

0.45

0.45

0.88

2.70

2.70

2.70

2.70

(per each fan)

FAN OPTION

J

K

L

M

N

P

R

S

CODE

Wheels

5…500

6…500

1…630

2…630

3…630

7…500

8…500

1…250

Qty...Width (mm)

Nominal Motor kW

2.70

2.70

2.90

2.90

2.90

2.70

2.70

2.70

(per each fan)

Table 2B — Supply/Exhaust Fan Options Physical Data — English

FAN OPTION CODE

A

B

C

E

F

G

H

Wheels

1…5 x 4 1/8

2…5 x 4 1/8

1…15 3/4

1…19 3/4

2…19 3/4

3…19 3/4

4…19 3/4

Qty...Width (in.)

Nominal Motor Hp

0.61

0.61

1.18

3.62

3.62

3.62

3.62

(per each fan)

FAN OPTION

J

K

L

M

N

P

R

R

CODE

Wheels

5…19 3/4

6…19 3/4

1…24 3/4

2…24 3/4

3…24 3/4

7…19 3/4

8…19 3/4

1…9 7/8

Qty...Width (in.)

Nominal Motor Hp

3.62

3.62

3.89

3.89

3.89

3.62

3.62

3.62

(per each fan)

DIRECT COUPLED APPLICATIONS (Horizontal) — For horizontal applications (above the roof) using 62EB-EU units, the horizontal supply/return base and transition accessories may be used.

For horizontal applications using 62E2-E7 units, a standard roof curb and transition accessories may be used.

INSTALLATION

Step 1 — Inspect the Unit — Inspect the unit; file a claim with the shipping company if the unit is damaged. Check the packing list to ensure that the correct items have been received and notify your Carrier representative of any discrepancy.

Step 2 — Install Combination Roof Curb (62EB-EU Units) — For 62EB-EU units, the combina- tion roof curb is a single curb that supports both the ERV and RTU and has internal supply and exhaust air transitions. See Fig. 1.

NOTE: For horizontal applications with 62E2-E7 units, a stan- dard roof curb and horizontal transition can be used.

LOCATE THE COMBINATION CURB — Prior to locat- ing the combination curb, consider the structural support re- quired for the rooftop system and the duct drop location in rela- tion to the joists. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Refer to Fig. 2 and 3 for ERV clearance requirements. Refer to the rooftop in- stallation instructions for more information regarding location considerations.

PREPARE ROOF CURB LOCATION — Cut a hole in the roof for duct openings. Your local Carrier sales representative can provide dimensional drawing for the combination curb. See this drawing for duct opening dimensions. Frame the open- ing to provide adequate structural support.

SET THE COMBINATION CURB — Set the combination curb over the roof opening. Level the curb by placing shims under the bottom flange of the curb. Secure the curb in place by welding or fastening the curb to the roof.

INSTALL DUCTWORK — Ductwork will be installed in the curb for combination curb applications. The supply duct will hang from the top of the curb. The return duct will attach to a stub duct provided with the combination roof curb.

NOTE: Ductwork must be installed before the RTU is set in place.

INSTALL GASKETS — The combination curbs come with a gasketing package to provide a seal between the RTU and ERV units and the top perimeter of the combination curb. Install the gasket around the top perimeter of the curb and around the sup- ply and return opening. Gasket strips must fit tightly together, leaving no gaps for leakage.

INSTALL ROOFING MATERIALS — Insulate and add a cant strip to the combination curb. Follow suggested and ac- ceptable roofing procedures for applying roofing materials. The roofing material should extend up to the wood nailer and be secured under the counter flashing. Follow all local, nation- al, and industry roofing standards. Refer to Fig. 4 for roofing recommendations.

Step 3 — Install Drop-In Damper Box (62EB- EU Units) — The drop-in damper box accessories are de- signed to fit into the return air openings of the standard factory curb of Carrier RTUs. The damper box provides connections for return air from the conditioned space, exhaust air to the ERV, and ventilation air from the ERV. The ERV would be in- stalled on a stand-alone roof curb and field-supplied ductwork would be run between the damper box and ERV curb. See Fig. 5. The maximum length of the field-supplied duct is 100 equivalent feet.

LOCATE THE ERV ROOF CURB — Prior to locating the ERV roof curb consider the structural support required for the rooftop system, the duct drop location in relation to the joists, and the 100 equivalent foot duct length limitation between the ERV and RTU. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Refer to Fig. 2 and 3 for ERV clearance requirements. Refer to the rooftop in- stallation instructions for more information regarding location and installation considerations for the RTU curb.

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