PN 453668
READ AND SAVE THESE INSTRUCTIONS
Models ERD/ESRMD/ESRMDF
GREENHECK
Direct Drive - Four Way Fans
P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
®
Exhaust/Supply/Recirculate/Mix
Installation, Operation and Maintenance Manual
G
Dimensional Data
F
G
H
H
12"
F
20"
*
Low Leakage Control Damper
Low Leakage Control Damper
A Sq.
20"
*
A Sq.
C
ACCESS DOOR
DxE
Access
Door
E
Control Damper
C
D
OPTIONAL DIFFUSER
OPTIONAL DIFFUSER
5"
OPTIONAL DIFFUSER
5"
B Sq.
B Sq.
Roof Opening
Roof Opening
Option: Plenum height can be increased in 12" increments.
See page 4 of Four Way catalog.
*
Model ERD
Models ESRMD & ESRMDF
Top Damper
VCD-2120
Recirc. Damper
VCD-1020
Access Doors
Roof
Opening
Size
A
B
C*
D
E
1
1
24
30
36
42
48
54
40
46
52
58
64
70
32
38
44
50
56
62
58 /
29x29
35x35
41x41
47x47
53x53
59x59
27w x 26h
33w x 30h
39wx 38h
44w x 42h
50w x 48h
56w x 54h
21
20
34 /
2
2
2
2
2
2
2
1
63
27
33
38
44
50
20
22
36
36
36
40 /
5
1
71 /
46 /
8
3
1
75 /
52 /
4
5
1
82 /
58 /
8
1
91
64 /
Non-Filtered Hood
Size ESRMD Hood Size ESRMDF Hood Size ERD Hood Size
Filtered Hood
Upblast Hood
Approximate Unit Weights
ESRDM ESRMDF ERD
Alum Galv Alum Galv Alum Galv
F
G
H
30
32
33
361/2
F
G
H
F
G
H
24
30
36
42
48
54
63
75
87
99
66
74
76
86
63
75
87
99
66
78
94
30
32
33
21/4 313/8 261/4 570 650 670 750 400 480
31/2 373/8 303/8 760 900 860 1000 490 630
41/2 433/4 333/4 1040 1200 1170 1330 715 875
100 361/2 41/2
50 381/2 1200 1400 1330 1530 850 1050
111 100 361/2 111 112 361/2 51/2 561/4 41 1470 1700 1620 1850 1110 1340
111 112 39 112 124 39
51/2 633/8 45 1770 2000 1920 2150 1405 1635
Routine Maintenance
WARNING
Disconnect and secure to the “OFF” position all electrical power to the fan
prior to inspection or servicing. Failure to comply with this safety
precaution could result in serious injury or death.
Once the fan has been put into operation, periodic maintenance should be performed on the following items:
1. Motors
Greasing of motors is intended only when fittings are provided. Many fractional horsepower motors are
lubricates for life and require no further lubrication. Motors supplied with grease fittings should be greased in
accordance with the motor manufacturer's directions given on the motor nameplate.
2. Removal of Dust and Dirt
Model ESRMD fans require periodic cleaning to maintain proper air performance and reliability. Dirt left to
accumulate on propeller blades may cause an unbalanced condition resulting in excessive vibration and
premature failure of the fan.
Dust and dirt should also be cleaned from the exterior surface of the fan motor and damper actuator(s). Dirt
accumulation on the motor/actuator(s) can block ventilation holes and prevent proper cooling. Motors and
actuators should never be sprayed directly with water, steam or solvents.
3. Filter Maintenance (Model ESRMDF)
Aluminum mesh filters should be cleaned on a regular basis for optimum fan efficiency. The frequency of
cleaning depends upon the cleanliness of the incoming air.
To remove filters in fan sizes 24-30, first remove the hood. This is accomplished by removing the two fasteners
on one side of the hood and loosening the other two fasteners in the other side of the hood. Hinge the hood over
onto the roof deck; DO NOT prop the hood up, the hood could come down accidentally causing injury. The filters
can then be pulled from the slide-out racks.
On sizes 36 to 54, access panels are provided in the ends of the hood which allow the filters to be removed
without removing the hood.
Filters should be washed with a mild detergent in warm water. After the filters are dry, an adhesive spray
available at most filter distributors may be applied to increase filter efficiency.
4. Fasteners
Fan vibration has a tendency to loosen mechanical fasteners. Periodic inspection should include checking all
fasteners for tightness. Particular attention should be paid to fasteners attaching the propeller to the motor shaft
and the motor to the motor plate.
5. Damper Plenum Linkage Adjustments
Plenum dampers should open to 45o from closed position. Consult factory before adjusting damper linkages.
3
Parts List
Birdscreen
or
Filters
Low Leakage Control Damper
Low Leakage Control Damper
VCD-2120
VCD-1020 (2)
ACCESS DOOR
Fan Motor
Damper Actuator
Motor Plate
Drive Frame Angle (2)
Propeller
Optional Diffuser
Optional Diffuser
Double Venturi Panel
Model ESRMD & ESRMDF
Warranty
Butterfly Dampers (2)
Greenheck warrants this equipment
free from defects in material and
workmanship for a period for one year
from the purchase date.
Any units or parts which prove to be
defective during the warranty period
will be replaced at our option when
returned to our factory, transportation
prepaid.
Motors are warranted by the motor
manufacturer for a period of one year.
Should motors furnished by
Greenheck prove defective during this
period, they should be returned to the
nearest authorized motor service
station. Greenheck will not be
responsible for any installation or
removal costs.
VCD-1020 (2)
Fan Motor
Control Damper
Damper Actuator
Motor Plate
Drive Frame Angle (2)
Propeller
Double Venturi Panel
Optional Diffuser
GREENHECK
P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
®
Model ERD
IOM ERD/ESRMD/ESRMDF FS
Rev. 2
4
September 1999
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