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R-410A
BUQ024-060
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power And Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . 8
1 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Unit Accessory Weights . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Unit Dimensions Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Side Duct Application . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Bottom Duct Application . . . . . . . . . . . . . . . . . . . . . . . . . 16
1 Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Dimensions Front and Bottom . . . . . . . . . . . . . . . . . . . . . 6
5 Dimensions Back and Bottom . . . . . . . . . . . . . . . . . . . . . 6
6 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General
Unitary Products Model BUQ units are factory assembled 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 heating.
The units are completely assembled on rigid, removable base
rails. All piping, refrigerant charge, and electrical wiring is
factory installed and tested. The units require only electric
power and duct connections at the point of installation.
The electric heaters have nickel-chrome resistance wire
elements and utilize single point power connection.
Safety Considerations
This is a safety alert symbol
labels or in manuals, be alert to the potential for personal injury.
Understand and pay particular attention the signal words
DANGER, WARNING or CAUTION.
TABLE OF CONTENTS
LIST OF TABLES
LIST OF FIGURES
. When you see this symbol on
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Phasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Blower Speed Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cooling Sequence Of Operations . . . . . . . . . . . . . . . . . . . 21
Heating Sequence Of Operations . . . . . . . . . . . . . . . . . . . 21
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Normal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . 19
10 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . 20
11 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 20
12 Electric Heat Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . 20
13 Delay Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
14 Thermostat Signals (Single Phase Units) . . . . . . . . . . . . 23
15 Thermostat Signals (Three Phase Units) . . . . . . . . . . . . 24
7 Typical Field Control Wiring Diagram . . . . . . . . . . . . . . . 9
8 Field Power Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . 9
9 Control Board Speed Tap Location . . . . . . . . . . . . . . . . 21
10 Demand Defrost "Curve" Selection Jumper . . . . . . . . . . 22
11 R-410A Quick Reference Guide . . . . . . . . . . . . . . . . . . 29
DANGER indicates an imminently hazardous situation, which,
if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation, which,
if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if
not avoided may result in minor or moderate injury. It is also
used to alert against unsafe practices and hazards involving
only property damage.
Improper installation may create a condition where the
operation of the product could cause personal injury or
property damage. Improper installation, adjustment,
alteration, service or maintenance can cause injury or
property damage. Refer to this manual for assistance or
for additional information, consult a qualified contractor,
installer or service agency.
SO 9001
Certified Quality
Management System
527929-BIM-F-0911
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Table of Contents
Related Manuals for Johnson Controls BUQ024
Summary of Contents for Johnson Controls BUQ024
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Page 1: Table Of Contents
R-410A BUQ024-060 SO 9001 2-5 Ton Certified Quality Management System TABLE OF CONTENTS General ......... . 1 Compressors. - Page 2 Reference Additional information is available in the following reference forms: • Technical Guide - BUQ024-060, 718424 Before performing service or maintenance operations on • General Installation - BUQ024-060, 527929 unit, turn off main power switch to unit. Electrical shock •...
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Page 3: Installation
Table 1: Unit Limitations Unit Limitations Size Unit Voltage Applied Voltage Outdoor DB Temp (Tons) Max (°F) 208/230-1-60 (2.0) 208/230-1-60 208/230-3-60 (2.5) 460-3-60 208/230-1-60 208/230-3-60 (3.0) 460-3-60 208/230-1-60 208/230-3-60 (3.5) 460-3-60 208/230-1-60 208/230-3-60 (4.0) 460-3-60 208/230-1-60 208/230-3-60 (5.0) 460-3-60 Johnson Controls Unitary Products... -
Page 4: Location
"B" 49-1/8 47-1/4 Figure 2: Unit 4 Point Load Weight Weight (lbs.) Center of Gravity 4 Point Load Location (lbs.) Size (Tons) Shipping Operating 22.25 (2.0) 22.25 (2.5) 22.25 (3.0) 22.25 (3.5) 22.25 (4.0) 22.25 (5.0) Johnson Controls Unitary Products... -
Page 5: Unit Accessory Weights
For all other heaters, zero inch clearance all sides for entire length of duct. Note: For units applied with a roof curb, the minimum clearance may be reduced from 1 inch to 1/2 inch between combustible roof curb material and this supply air duct. Johnson Controls Unitary Products... -
Page 6: Dimensions Front And Bottom
SIDE SUPPLY 14-1/2 AIR OPENING *CONDENSER 28-3/8 COIL 14-1/2 BACK BOTTOM SUPPLY AIR OPENING 3-3/8 SIDE RETURN AIR OPENING 14-1/2 4-1/4 1-3/4 1-3/4 BOTTOM RETURN 28-9/16 3-1/2 AIR OPENING 1-3/4 Figure 5: Dimensions Back and Bottom Johnson Controls Unitary Products... -
Page 7: Ductwork
When fastening duct work to the side duct flanges on the unit, insert the screws through the duct flanges only. DO NOT insert the screws through the casing. Outdoor duct work must be insulated and waterproofed. 1. 8” Roof Curb also available. Johnson Controls Unitary Products... -
Page 8: Condensate Drain
Refer to Figures 7 and 8 for typical field wiring and to the appropriate unit wiring diagram for control circuit and power wiring information. Johnson Controls Unitary Products... -
Page 9: Typical Field Control Wiring Diagram
THERMOSTAT ONLY CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors cancause improper and dangerous operation. Verify proper operation after servicing. Figure 7: Typical Field Control Wiring Diagram Figure 8: Field Power Wiring Diagram Johnson Controls Unitary Products... -
Page 10: Electrical Data
2NP04502025 15 / 20 41.7 / 48.1 78.6 / 86.7 80 / 90 2NP04502525 18.8 / 25 52.1 / 60.1 91.7 / 101.7 100 / 110 None 12.5 2NP04501046 27.5 460-3-60 2NP04501546 2NP04502046 24.1 42.5 2NP04502546 30.1 Johnson Controls Unitary Products... -
Page 11: Physical Data
2NP04502546 30.1 53.1 1. Minimum Circuit Ampacity. 2. Maximum Over Current Protection per standard UL 1995. 3. Fuse or HACR circuit breaker size installed at factory or field installed. Table 6: BUQ024-060 Physical Data Models Component BUQ024 BUQ030 BUQ036 BUQ042... -
Page 12: Compressors
527929-BIM-F-0911 Table 6: BUQ024-060 Physical Data (Continued) Models Component BUQ024 BUQ030 BUQ036 BUQ042 BUQ048 BUQ060 Nominal Tonnage Refrigerant control CONDENSER FAN DATA Quantity of fans Fan diameter (Inch) Type Prop Prop Prop Prop Prop Prop Drive type Direct Direct Direct... -
Page 13: Side Duct Application
COOL-B; HEAT-D 1200 Y1+W1 COOL-C; HEAT-A 1050 Aux. Y1+W1 COOL-C; HEAT-B 1000 Heat Y1+W1 COOL-C; HEAT-C 1150 Y1+W1 COOL-C; HEAT-D 1200 Y1+W1 COOL-D; HEAT-A 1050 Y1+W1 COOL-D; HEAT-B 1000 Y1+W1 COOL-D; HEAT-C 1150 Y1+W1 COOL-D; HEAT-D 1200 Johnson Controls Unitary Products... - Page 14 COOL-B; HEAT-D 1600 Y1+W1 COOL-C; HEAT-A 1500 Aux. Y1+W1 COOL-C; HEAT-B 1400 Heat Y1+W1 COOL-C; HEAT-C 1550 Y1+W1 COOL-C; HEAT-D 1600 Y1+W1 COOL-D; HEAT-A 1500 Y1+W1 COOL-D; HEAT-B 1400 Y1+W1 COOL-D; HEAT-C 1550 Y1+W1 COOL-D; HEAT-D 1600 Johnson Controls Unitary Products...
- Page 15 Y1+W1 COOL-C; HEAT-C 2150 1019 1052 1086 1119 Y1+W1 COOL-C; HEAT-D 2070 1016 1049 Y1+W1 COOL-D; HEAT-A 1900 Y1+W1 COOL-D; HEAT-B 1975 Y1+W1 COOL-D; HEAT-C 2150 1019 1052 1086 1119 Y1+W1 COOL-D; HEAT-D 2070 1016 1049 Johnson Controls Unitary Products...
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Page 16: Bottom Duct Application
COOL-B; HEAT-D 1200 Y1+W1 COOL-C; HEAT-A 1050 Aux. Y1+W1 COOL-C; HEAT-B 1000 Heat Y1+W1 COOL-C; HEAT-C 1150 Y1+W1 COOL-C; HEAT-D 1200 Y1+W1 COOL-D; HEAT-A 1050 Y1+W1 COOL-D; HEAT-B 1000 Y1+W1 COOL-D; HEAT-C 1150 Y1+W1 COOL-D; HEAT-D 1200 Johnson Controls Unitary Products... - Page 17 COOL-B; HEAT-D 1600 Y1+W1 COOL-C; HEAT-A 1500 Aux. Y1+W1 COOL-C; HEAT-B 1400 Heat Y1+W1 COOL-C; HEAT-C 1550 Y1+W1 COOL-C; HEAT-D 1600 Y1+W1 COOL-D; HEAT-A 1500 Y1+W1 COOL-D; HEAT-B 1400 Y1+W1 COOL-D; HEAT-C 1550 Y1+W1 COOL-D; HEAT-D 1600 Johnson Controls Unitary Products...
- Page 18 Y1+W1 COOL-C; HEAT-C 2150 1019 1052 1086 1119 Y1+W1 COOL-C; HEAT-D 2070 1016 1049 Y1+W1 COOL-D; HEAT-A 1900 Y1+W1 COOL-D; HEAT-B 1975 Y1+W1 COOL-D; HEAT-C 2150 1019 1052 1086 1119 Y1+W1 COOL-D; HEAT-D 2070 1016 1049 Johnson Controls Unitary Products...
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Page 19: Additional Static Resistance
1. The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation. Johnson Controls Unitary Products... -
Page 20: Ton
CFM from 0.2" to 0.6" w.c. static pressure. NOTE: CFM indicator light flashes once for every 100 CFM From 0.6" to 1.0" static pressure, CFM is reduced by 2% per 0.1" (i.e., 12 flashes = 1200 CFM). Johnson Controls Unitary Products... -
Page 21: Operation
"W" and "W6" and back to the fan control "W1". Table 13: Delay Profile The 24 volt signal energizes all stages of electric heat. Delay Tap Regional Climate Type Jumper at “A” Standard Setting Jumper at “B” Humid Climate Jumper at “C” Dry Climate Johnson Controls Unitary Products... -
Page 22: Demand Defrost "Curve" Selection Jumper
The limit cycle count is reset at the start of a heat request. If the limit remains open for period of 80 seconds or more, the control is immediately put into a hard lockout condition. Only a power cycle will clear this state. Johnson Controls Unitary Products... -
Page 23: Thermostat Signals (Single Phase Units)
HEATER BANK 3 ELEC. HEAT 20 SEC. DELAY ON HEATER BANK 3 ELEC. HEAT INSTANT OFF HEATER BANK 2 ELEC. HEAT 1/2 SEC. DELAY OFF HEATER BANK 1 ELEC. HEAT 1 SEC. DELAY OFF BLOWER 60 SEC. DELAY OFF Johnson Controls Unitary Products... -
Page 24: Thermostat Signals (Three Phase Units)
HEATER BANK 4, 5 & 6 ELEC. HEAT 10 SEC. DELAY ON HEATER BANK 4, 5 & 6 ELEC. HEAT INSTANT OFF HEATER BANK 1, 2 & 3 ELEC. HEAT 1/2 SEC. DELAY OFF BLOWER 60 SEC. DELAY OFF Johnson Controls Unitary Products... -
Page 25: Maintenance
The wire number or color and terminal designations referred to may vary. Check the wiring label inside the control box access panel for the correct wiring. Johnson Controls Unitary Products... -
Page 26: Wiring Diagrams
527929-BIM-F-0911 Wiring Diagrams Typical BUQ024-060 Heat Pump 208/230-1-60 volt Wiring Diagram Johnson Controls Unitary Products... - Page 27 527929-BIM-F-0911 Typical BUQ030-060 Heat Pump 230-3-60 volt Wiring Diagram Johnson Controls Unitary Products...
- Page 28 527929-BIM-F-0911 Typical BUQ030-060 Heat Pump 460-3-60 volt Wiring Diagram Johnson Controls Unitary Products...
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Page 29: 410A Quick Reference Guide
Figure 11: R-410A Quick Reference Guide Subject to change without notice. Printed in U.S.A. 527929-BIM-F-0911 Copyright © 2011 by Johnson Controls, Inc. All rights reserved. Supersedes: 527929-BIM-E-0511 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...