Fan Motors and Drives - Motor and drive packages are factory installed in all units. The motor and drive packages consist of the following items:
1 — fan motor
1 — adjustable motor pulley
1 — fan pulley
2 — matched fan belts
For instructions on changing fan rotation, changing drive speeds and adjusting drives, see Pulley and Drive Adjustment in the Service section.
Power Supply and Wiring - Check the unit data plate to ensure that available power supply matches electrical characteristics of the unit. Provide a disconnect switch with an integrated
!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standards Association] C22.1), and local electrical codes.
!WARNING
FIRE HAZARD
Install disconnect switch and power wiring in accordance with all applicable local codes. See Fig.
FAN SCROLL | FAN |
|
| CONTACTOR |
|
| BOX |
|
MOTOR | WIRE |
|
AND DRIVE |
| |
| ACCESS |
|
CONDENSATE | FAN DRIVE |
|
PULLEY |
| |
DRAIN |
| |
|
| |
CONNECTION |
|
|
(HORIZONTAL) |
|
|
| COIL |
|
FILTER | TXV BULB |
|
ELEMENTS |
| |
ACCESS |
| |
| 524J | |
| REFRIGERANT | |
|
| |
FILTER | PIPING ACCESS |
|
|
| |
RETAINER | CONDENSATE |
|
CLIP |
| |
| DRAIN |
|
| CONNNECTION |
|
| (VERTICAL) |
|
| LEGEND |
|
| TXV — Thermostatic Expansion Valve |
|
| C10693 |
|
Fig. 15 - Wiring and Service Access
(Side Panel Removed)
Fan motors are
Failure to follow this warning could result in intermittent operation or performance satisfaction.
Do not connect aluminum wire between disconnect switch and fan coil unit. Use only copper wire.
(See Fig. 14)
ELECTRIC
DISCONNECT
SWITCH
COPPER
WIRE ONLY
FAN CONTACTOR
24V TERMINAL BLOCK
POWER
WIRING KNOCKOUT
A
J R
V 00 6
C ° 5 0 1
23 | 22 | 21 |
W
31 | 21 | 11 |
C10694
ALUMINUM
WIRE
A93033
Fig. 14 - Disconnect Switch and Unit
Fig. 16 - Fan Contactor Box and Terminal Block
(Cover Removed) (Typical)
15