Unitary products group KBU060, Руководство по установке

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292427-BIM-A-0307
Unitary Products Group 15
SUPPLY AIR BLOWER ADJUSTMENT
The RPM of the supply air blower will depend on the required
CFM, the unit accessories and the static resistances of both
the supply and the return air duct system. With this informa-
tion, the RPM for the supply air blower can be determined
from the blower performance shown in Table 9.
Knowing the required blower RPM and the blower motor HP,
the setting (turns open) for the supply air motor pulley can be
determined from Table 8.
Each motor pulley has:
1. A threaded barrel with two flats (or notched recesses)
180 degrees apart.
2. A movable flange with one set screw.
After the movable flange has been rotated to the proper num-
ber of “turns open”; the set screw should be tightened against
the flat on the barrel to lock the movable flange in place. If the
pulley includes a locking collar, the locking collar must be
loosened to adjust the setting of the movable flange.
Note the following:
1. The supply air CFM must be within the limitations shown
in Table 3.
2. All Pulleys can be adjusted in half turn increments.
3. The tension on the belt should be adjusted for a deflec-
tion of 3/16 of an inch per foot of belt span with an
applied force of 2 to 3 pounds. Moving the blower motor
mounting plate makes this adjustment. Refer to Figure
13. Turning the adjustment bolt (B) moves the motor
mounting plate up or down. Note - NEVER loosen the
two nuts (C). Two hex nuts (A) have to be loosened to
move the mounting plate and retighten after the mount-
ing plate has been moved to the proper position.
TABLE 7: KBU, KBC ELECTRICAL DATA (CONTINUED)
Model
(TONS)
Power
Supply
Voltage
Indoor
Motor
FLA
Heater
Model
Number
Nominal
Heater
KW
Applied
Heater KW
Electric
Heat Amps
Min.
Circuit
Ampacity
(AMPS)
Max. Fuse
1
/
HACR
Breaker
2
(AMPS)
180
(15)
208 10.6
None -- -- -- 13.3 20
2HS04501025 10 7.5 20.8 39.3 40
2HS04501625 16 12.0 33.4 54.9 60
2HS04502625 26 19.5 54.2 81.0 90
2HS04503625 36 27.0 75.1 107.1 110
2HS04507225 72 54.1 150.1 200.9 225
240 9.6
None -- -- -- 12.0 15
2HS04501025 10 10.0 24.1 42.1 45
2HS04501625 16 16.0 38.5 60.1 70
2HS04502625 26 26.0 62.5 90.2 100
2HS04503625 36 36.0 86.6 120.3 125
2HS04507225 72 72.0 173.2 228.5 250
460 4.8
None -- -- -- 6.0 15
2HS04501046 10 10.0 12.0 21.0 25
2HS04501646 16 16.0 19.2 30.1 35
2HS04502646 26 26.0 31.3 45.1 50
2HS04503646 36 36.0 43.3 60.1 70
2HS04507246 72 72.0 86.6 114.3 125
575 3.9
None -- -- -- 4.9 15
2HS04501058 10 10.0 9.6 16.9 20
2HS04501658 16 16.0 15.4 24.1 25
2HS04502658 26 26.0 25.0 36.1 40
2HS04503658 36 36.0 34.6 48.2 50
2HS04507258 72 72.0 69.3 91.5 100
1.
Dual element time delay.
2.
HACR type per NEC.
3.
The K*BU060 indoor motor is single phase. The electrical heaters MUST be supplied with 3-phase voltage only.