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V
DC
1500
1625
1750
1875
2000
2125
2250
2375
2500
Field Accessories:
Economizer
1 Stage E Heat
2 Stage E Heat
NOTE: Values in the Field Accessories section are VDC adders.
Fig. 24 — Example of Fan Speed Set Up Labels for Electro-Mechanical Controls
Service Access for Supply Fan and Motor
HORIZONTAL APPLICATIONS
Removing the Motor and Fan Assembly
NOTE: Due to press fit design of composite Rotor on Motor, it is
highly recommended that any time a motor is replaced the fan ro-
tor is replaced as well. The rest of the assembly may be reused.
1.
Unplug motor harness from control box harness. See Fig. 25.
2.
Unplug connectors from stator temperature limit switch. See
Fig. 25.
3.
Remove three screws from each of the quarter round stator
retention brackets. See Fig. 26.
4.
Slide fan assembly out of the panel opening that is being
used. Side panel access will require the assembly to be angled
to clear the opening. See Fig. 27.
ESP in. wg
0.2
0.4
0.6
0.8
1.0
5.4
6.2
6.9
7.5
8.1
5.8
6.5
7.1
7.7
8.3
6.1
6.8
7.4
8.0
8.5
6.5
7.1
7.7
8.2
8.7
6.8
7.4
7.9
8.5
9.0
7.2
7.7
8.2
8.7
9.2
7.6
8.0
8.5
9.0
9.5
7.9
8.4
8.8
9.3
9.8
8.3
8.7
9.2
9.6
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.2
0.2
0.2
0.3
0.3
0.3
0.3
0.3
1.2
1.4
1.6
1.8
2.0
8.6
9.1
9.6
8.8
9.3
9.8
9.0
9.5
9.9
9.2
9.7
9.5
9.9
9.7
10.0
0.1
0.1
0.1
0.2
0.2
0.2
0.3
0.3
0.3
Fig. 25 — Locations of Motor Harness and Stator
Temperature Limit Switch
22
Factory Setting:
9.0 V
DC
Field Setting:
Record field setting here
V
Switch Range:
C
B
A
4.1 - 7.5
A
6.9 - 8.7
B
7.7 - 10.0
C
* Overlap in A, B, C switch range
designed for maximum field
adjustment potential. For example
7.2 can be set at either A or B.
Stator Temperature
Limit Switch
Control Box
Motor Harness
Harness
*
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