Johnson Controls York AHR Series Installation Manual
Johnson Controls York AHR Series Installation Manual

Johnson Controls York AHR Series Installation Manual

Single piece, 4 position air handlers

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INSTALLATION MANUAL
SINGLE PIECE, 4 POSITION
AIR HANDLERS
MODELS: AHR SERIES
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DUCTWORK AND CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .5
ELECTRIC HEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . .8
LINE POWER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
LOW VOLTAGE CONTROL CONNECTIONS . . . . . . . . . . . . . . . . . .9
Return Duct Attachment & Component Location . . . . . . . . . . . . . . . . .2
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Condensate Deflector on Vertical Drain Pan . . . . . . . . . . . . . . . . . . . .5
S-Clip Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Horizontal Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Duct Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Ductwork Transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Physical and Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Electrical Data - Cooling Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Electrical Heat: Minimum Fan Speed . . . . . . . . . . . . . . . . . . . . . . . . .10
SECTION I: GENERAL
The AHR single piece air handler series provides the flexibility for instal-
lation in any position. This unit may be used for upflow, downflow, hori-
zontal right, or horizontal left applications.
These units may be located in a closet, utility room, attic, crawl space,
or basement. These versatile models may be used for cooling or heat
pump operation with or without electric heat.
Top and side power wiring and control wiring, accessible screw termi-
nals for control wiring, easy to install drain connections, and electric
heaters all combine to make the installation easy and minimize installa-
tion cost.
Electric heat kits are available as field installed accessories. Single
phase and 3 phase kits are available and range from nominal 2.5 kW to
25 kW sizes.
A Brand Label (available from Distribution) may be applied to the center
of the blower access panel.
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
LIST OF SECTIONS
BLOWER SPEED CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 9
UNIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TYPICAL THERMOSTAT CONNECTIONS . . . . . . . . . . . . . . . . . . . 17
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
LIST OF FIGURES
TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Proper Bulb Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Blower Delay Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Line Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Blower Speed Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wiring Diagram - PSC - Single Phase Heat Kits . . . . . . . . . . . . . . . 15
Wiring Diagram - Phase Heat Kits . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Typical Wiring Diagram - PSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LIST OF TABLES
Air Flow Data (CFM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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 dam-
age.
Improper installation, adjustment, alteration, or maintenance may cre-
ate a condition where the operation of the product could cause per-
sonal injury or property damage. Refer to this manual for assistance,
or for additional information, consult a qualified contractor, installer, or
service agency.
This product must be installed in strict compliance with the installation
instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical codes.
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage. A fire or electrical hazard may result
causing property damage, personal injury or loss of life.
ISO 9001
Certified Quality
Management System
1053681-UIM-B-0514

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Summary of Contents for Johnson Controls York AHR Series

  • Page 1: Table Of Contents

    INSTALLATION MANUAL SINGLE PIECE, 4 POSITION AIR HANDLERS MODELS: AHR SERIES ISO 9001 Certified Quality Management System LIST OF SECTIONS GENERAL ..........1 BLOWER SPEED CONNECTIONS .
  • Page 2: Safety

    WHEN ATTACHING DUCT WORK WITH SECONDARY DRAIN SIDES AND REAR OF UNIT SCREWS - KEEP SCREWS WITHIN 5/8” UPFLOW 3/4” THREADED OF SIDES AND BACK OF AIR HANDLER FIGURE 1: Return Duct Attachment & Component Location Johnson Controls Unitary Products...
  • Page 3: Unit Installation

    5. The ductwork and plenum connected to this unit are designed for instructions. zero clearance to combustible materials. 6. A combustible floor base accessory is available for downflow appli- cations of this unit, if required by local code. Johnson Controls Unitary Products...
  • Page 4: Typical Installation

    See ìCondensate Deflectorî section for details. NOTICE Conversion must be made before brazing the refrigerant connections to the coil. Johnson Controls Unitary Products...
  • Page 5: Ductwork And Connections

    NOTICE FEEDER TUBES When assembling the support structure, make sure to size to provide clearance for access door removal. CONDENSATE DEFLECTOR S-CLIPS ON HORIZONTAL PAN FIGURE 5: Condensate Deflector on Horizontal Drain Pan Edge Johnson Controls Unitary Products...
  • Page 6: Horizontal Suspension

    It is recommended to install the TXV kit prior to brazing line sets. Refer to the instructions in the installation manuals provided with the TXV kit and outdoor unit for more information. FIGURE 8: Duct Attachment Johnson Controls Unitary Products...
  • Page 7: Txv

    The drain pan connections are designed to ASTM Standard D 2466 Schedule 40. Use 3/4” PVC or steel threaded pipe. Since the drains are not subject to any pressure it is not necessary to use Schedule 40 pipe for drain lines. Johnson Controls Unitary Products...
  • Page 8: Electric Heater Installation

    3 CIRCUITS ON 25KW 3 CIRCUITS ON 25KW 3 PHASE ELECTRIC HEAT POWER OPTIONS: SINGLE SOURCE POWER MULTI-SOURCE POWER POWER CKT 2 SUPPLY POWER SUPPLY CKT 1 TERMINAL BLOCK OR CIRCUIT BREAKER FIGURE 13: Line Power Connections Johnson Controls Unitary Products...
  • Page 9: Low Voltage Control Connections

    2. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. 3. 75C, copper wire only. If wire other than non-plated, 75C ambient, copper wire is used, consult applicable tables of the NEC and local codes. Johnson Controls Unitary Products...
  • Page 10: Electrical Heat: Minimum Fan Speed

    1. (0,1) - 0 = no circuit breaker OR 1 = with circuit breaker. 2. (1,2) - 1 = with circuit breaker, no breaker jumper bar OR 2 = with circuit breaker & breaker jumper bar. Johnson Controls Unitary Products...
  • Page 11: Electrical Data For Single Source Power Supply: 208/230-1-60

    3. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. 4. Stated sizes are for 75°C, copper wire only. If wire other than non-plated, 75° ambient, copper wire is used, consult applicable tables of the NEC and local codes. Johnson Controls Unitary Products...
  • Page 12: Electrical Data For Multi-Source Power Supply: 208/230-1-60

    3. The 20kW and 25kW heater models (6HK16502025 and 6HK16502525) come with circuit breakers standard. Single source power MCA and MOP requirements are given here only for reference if used with field installed single point power modification. Johnson Controls Unitary Products...
  • Page 13: Electrical Data For Multi-Source Power Supply: 208/230-3-60

    1439 1233 AHR60D Medium 1556 1507 1450 1388 1266 1246 1211 1181 1151 1062 230 Volt High 1145 1100 1055 1005 AHR18B Medium High 1294 1254 1189 1133 1064 AHR22B Medium (For notes see page 14) Johnson Controls Unitary Products...
  • Page 14: Maintenance

    COIL CLEANING to insure a free flowing primary drain. If the coil needs to be cleaned, it should be wash with an evaporator coil cleaner. Follow directions from coil cleaner. Johnson Controls Unitary Products...
  • Page 15: Wiring Diagram

    1053681-UIM-B-0514 SECTION XI: WIRING DIAGRAM  FIGURE 15: Wiring Diagram - PSC - Single Phase Heat Kits Johnson Controls Unitary Products...
  • Page 16: Wiring Diagram - Phase Heat Kits

    FL – FUSIBLE LINK REL2 REL5 HE – HEATING ELEMENT LS – LIMIT SWITCH REL – RELAY REL4 REL1 FIELD POWER WIRING (208/230V) FACTORY WIRING (208/230V) FACTORY WIRING LOW VOLTAGE FIGURE 16: Wiring Diagram - 3 Phase Heat Kits Johnson Controls Unitary Products...
  • Page 17: Typical Thermostat Connections

    1053681-UIM-B-0514 SECTION XII: TYPICAL THERMOSTAT CONNECTIONS FIGURE 17: Typical Wiring Diagram - PSC Johnson Controls Unitary Products...
  • Page 18 1053681-UIM-B-0514 NOTES Johnson Controls Unitary Products...
  • Page 19: Start Up Sheet

    Return air dry bulb temperature Return air wet bulb temperature Total external static pressure Temperature drop Supply air wet bulb temperature Other Jumpers (Check all that apply) HUM STAT AC/HP CONT FAN Continued on next Page Johnson Controls Unitary Products...
  • Page 20 Explain the importance of regular filter replacement and equipment maintenance Comments and Additional Job Details .Subject to change without notice. Published in U.S.A 1053681-UIM-B-0514 Copyright © 2014 by Johnson Controls, Inc. All rights reserved. Supersedes: 1053681-UIM-A-0713 York International Corp. 5005 York Drive...

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