Place Unit - Carrier 50AH024 Installation, Start-Up And Service Instructions Manual

INSTALLATION
Carrier
50B
BA^BBj BC024
TABLE 4 - 50BA, BB, BC024 FAN DRIVES FOR 50 AND 60 CYCLE MOTORS
Fan Pulley "V" Belt Adjustable Motor Pulley
Turns Open
Fan Speed
Fan Speed
From Closed Per 1/2 Range
Position
_
Turn (RPM) (RPM)
Pitch Outside Pitch
Min.
Max.
Motor Diam.
Bore
No. Belt Length Bore Diam. Pitch Pitch
Cycle
RPM
(In.) (In.) Req'd Sect. (In.) (In.) (In.) Diam. Diam.
60 1750 10
M
■
HI
45 1 1/8
1
5
0 17.5
1
50 1450 10
n n
45 1 1/8
RSI
5 0 14.5 665 - 810
■ ■ ■
gjjf
ANGULAR PARALLEL CORRECT
MISALIGNMENT MISALIGNMENT ALIGNMENT
FIG. 10 - DIAGRAM OF CORRECT
PULLEY ALIGNMENT
6. POSSIBLE FAN ARRANGEMENTS
The unit, as shipped from the factory, has the fan
section mounted for vertical air discharge. Other
possible arrangements can be made in the field.
Forward or backward horizontal air discharge is
possible with an accessory package which contains
six panels for completing this changeover. See In¬
stallation Instructions 38RR531505.
HORIZONTAL AIR DISCHARGE (BACK MOUNTED)
Rear mounted fan sections for horizontal air dis¬
charge can be obtained by following step-by-step
procedures outlined below:
1. Remove front panel from fan section.
2. Remove upper rear coil section panel.
3. Remove conduit and wires from fan motor.
4. Remove the four 3/8-16 fasteners, found at
each corner of fan section, which secure the
fan section to the coil section.
5. Remove and rotate fan section 180° and secure
it to the coil section with the fasteners re¬
moved in Step 4.
6. Replace the fan motor conduit and wires re¬
moved in Step 3.
7. Place panel, removed from rear of coil
section, on top of the coil section. The flange
of this panel will overlap onto the fan section.
8. Place fan section panel, removed in Step 1 on
top of fan section.
9. Fasten both panels with screws removed in
Step 1 and 2.
7. PLACE UNIT
The base unit should be level and adequately sup¬
ported. Where extremely quiet operation is essen¬
tial, place vibration dampening material between the
floor and base of the unit. In leveling, use the chan¬
nels at the front and ends of the condensing unit
section for reference points.
Structural insulation materials such as Celotex,
Temlock, Insulate, and Lockaire are good isolators,
but will deteriorate and give off odors when wet, as
would occur outdoors or on floors that are mopped
regularly.
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