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268723-BIM-C-0908

4

Johnson Controls Unitary Products

Location

Use the following guidelines to select a suitable location for 
these units.

1.

Unit is designed for outdoor installation only.

2.

Condenser must have an unlimited supply of air. Where a 
choice of location is possible, position unit on either north 
or east side of building.

3.

For ground level installation, a level pad or slab should be 
used. The thickness and size of the pad or slab used 
should meet local codes and unit weight. Do not tie the 
slab to the building foundation.

4.

For roof top installation, be sure the structure can support 
the weight of the unit plus any field installed components. 
Unit must be installed on a level roof curb or appropriate 
angle iron frame providing adequate support under the 
compressor/condenser section.

5.

Maintain level tolerance of unit to 1/8" maximum.

Clearances

All units require certain clearances for proper operation and 
service. Refer to Table 4 for the clearances required for 
construction, servicing and proper unit operation.

Rigging And Handling

Exercise care when moving the unit. Do not remove any 
packaging until the unit is near the place of installation. Rig the 
unit by attaching chain or cable slings to the lifting holes 
provided in the base rails. Spreader bars, whose length 
exceeds the largest dimension across the unit, 

MUST

 be used 

across the top of the unit.

Units may be moved or lifted with a forklift. Slotted openings in 
the base rails are provided for this purpose.

Figure 2: Unit 4 Point Load Weight

Do not permit overhanging structures or shrubs to 
obstruct condenser air discharge outlet, combustion air 
inlet or vent outlets.

If a unit is to be installed on a roof curb other than a 
UPG roof curb, gasketing must be applied to all surfaces 
that come in contact with the unit underside.

Before lifting, make sure the unit weight is distributed 
equally on the rigging cables so it will lift evenly.

All panels must be secured in place when the unit is 
lifted.

The condenser coils should be protected from rigging 
cable damage with plywood or other suitable material.

X

CENTER OF 

GRAVITY

49-1/8

FRONT

OF 

UNIT

Y

47-1/4

"D"

"C"

"B"

"A"

Size

(Tons)

Weight (lbs.)

Center of Gravity

4 Point Load Location (lbs.)

Shipping Operating

X

Y

A

B

C

D

024

(2.0)

360

355

22.25

25

96

84

81

93

030

(2.5)

355

350

22.25

25

96

84

81

93

036

(3.0)

395

390

22.25

25

106

92

89

102

042

(3.5)

445

440

22.25

25

120

104

101

115

048

(4.0)

490

485

22.25

25

132

115

111

127

060

(5.0)

500

495

22.25

25

135

117

113

130

Summary of Contents for BUZ024

Page 1: ...heat pumps designed for outdoor installation on a roof top or a slab Field installed electric heater accessories are available to provide supplemental electric heat combined with electric cooling and...

Page 2: ...mited to building electrical and mechanical codes Before performing service or maintenance operations on unit turn off main power switch to unit Electrical shock could cause personal injury Improper i...

Page 3: ...denser Fan Motor Highly Efficient Enhanced Copper Tube Aluminum Fin Indoor Coil Highly Efficient Enhanced Copper Tube Aluminum Fin Outdoor Coil Decorative Protective Coil Guard 5 Speed Direct Drive Bl...

Page 4: ...the place of installation Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails Spreader bars whose length exceeds the largest dimension across the unit MUST...

Page 5: ...SIDE RETURN AIR OPENING SIDE SUPPLY AIR OPENING LOW VOLTAGE CONN 7 8 DIA KNOCKOUT HIGH VOLTAGE CONN 1 31 32 DIA KNOCKOUT HIGH VOLTAGE CONN 7 8 DIA KNOCKOUT A 3 3 4 1 1 2 2 1 2 2 3 8 4 1 2 49 1 8 28 1...

Page 6: ...T 26 3 4 CONDENSATE DRAIN 3 4 NPTF LOW VOLTAGE CONN 7 8 DIA KNOCKOUT HIGH VOLTAGE CONN 1 31 32 x 7 8 KNOCKOUT 22 1 2 43 1 2 40 1 2 4 14 1 2 28 3 8 14 1 2 BACK 3 3 8 SIDE RETURN AIR OPENING 14 1 2 3 1...

Page 7: ...bottom supply and return air duct openings Roof Curb On applications when a roof curb is used the unit must be positioned on the curb so the front of the unit is tight against the curb Filters Single...

Page 8: ...and or local ordinances The unit must be electrically grounded in accordance with local codes or in their absence with the N E C C E C Voltage tolerances which must be maintained at the compressor te...

Page 9: ...led 24 volt wire Only required on units with supplemental electric heat PROGRAMMABLE THERMOSTAT ONLY THERMOSTAT UNIT CONTROL BOARD TERMINAL STRIP 24 VOLT TRANSFORMER NOTE HEAT ANTICIPATOR SHOULD BE SE...

Page 10: ...5 2 54 2 62 5 94 2 104 6 100 110 208 230 3 60 11 5 77 18 1 2 6 0 None 21 6 30 2NH04501025 7 5 10 1 20 8 24 1 47 6 51 6 50 60 2NH04501525 11 3 15 1 31 3 36 1 60 7 66 7 70 70 460 3 60 5 1 35 8 0 8 3 0 N...

Page 11: ...R410a R410a R410a R410a R410a R410a Refrigerant charge lb oz 6 0 7 4 9 6 12 0 10 10 11 8 ARI HEATING PERFORMANCE 47 F Capacity Rating Mbh 22 2 27 8 32 8 40 0 45 5 56 0 System Power Kw COP 3 4 3 3 3 0...

Page 12: ...Direct Direct Direct Direct Direct Direct No speeds 1 1 1 1 1 1 Number of motors 1 1 1 1 1 1 Motor HP each 1 4 1 4 1 4 1 4 1 4 1 2 RPM 850 850 850 850 850 1100 Nominal total CFM 1800 1800 2400 2400 30...

Page 13: ...030 1922 746 1069 1829 746 1104 1712 728 1134 1528 659 1146 High 5 2214 968 1104 2089 918 1121 1949 859 1136 1785 787 1148 1576 689 1154 Table 8 Bottom Duct Application Size Tons Blower Speed Setting...

Page 14: ...0 700 0 01 0 00 0 02 0 03 800 0 01 0 01 0 02 0 03 900 0 01 0 01 0 02 0 04 1000 0 02 0 01 0 02 0 04 1100 0 03 0 01 0 03 0 05 1200 0 04 0 02 0 03 0 06 1300 0 04 0 03 0 03 0 07 1400 0 04 0 04 0 03 0 08...

Page 15: ...or cooling has been satisfied the 24 volt Y signal is removed and the M1 contactor is de energized When the fan switch on the thermostat is in the ON position the indoor blower motor continues to run...

Page 16: ...bit feature prohibits defrost if the coil temperature is above 40 F A forced defrost feature puts the system into a defrost period every 6 hours and 4 minutes to recirculate lubricants unless the coil...

Page 17: ...VALVE ENERGIZED SYSTEM OPERATES IN COOLING COMPRESSOR AND OUTDOOR FAN INSTANT OFF FAN 60 SEC DELAY OFF FAN INSTANT ON OFF COMPRESSOR AND OUTDOOR FAN INSTANT ON AFTER ANTI SHORT CYCLE DELAY SYSTEM OPE...

Page 18: ...OPERATES IN HEATING HEATER BANK 1 2 3 ELEC HEAT INSTANT ON HEATER BANK 4 5 6 ELEC HEAT 10 SEC DELAY ON OFF COMPRESSOR AND OUTDOOR FAN INSTANT OFF HEATER BANK 4 5 6 ELEC HEAT INSTANT OFF HEATER BANK 1...

Page 19: ...268723 BIM C 0908 Johnson Controls Unitary Products 19 Typical Wiring Diagrams Typical BUZ024 060 Heat Pump 208 230 1 60 volt Wiring Diagram...

Page 20: ...268723 BIM C 0908 20 Johnson Controls Unitary Products Typical BUZ030 060 Heat Pump 230 3 60 volt Wiring Diagram...

Page 21: ...268723 BIM C 0908 Johnson Controls Unitary Products 21 Typical BUZ030 060 Heat Pump 460 3 60 volt Wiring Diagram...

Page 22: ...only Manifold sets must be at least 700 psig high side and 180 psig low side with 550 psig retard All hoses must have a service pressure rating of 800 psig Leak detectors must be designed to detect H...

Page 23: ...268723 BIM C 0908 Johnson Controls Unitary Products 23...

Page 24: ...change without notice Printed in U S A 268723 BIM C 0908 Copyright 2008 by Johnson Controls Inc All rights reserved Supersedes 268723 BIM B 0807 Johnson Controls Unitary Products 5005 York Drive Norma...

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