Johnson Controls B1HA036, B1HA060, B1HA042, B1HA048 Installation Manual

INSTALLATION
MANUAL

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

REPLACEMENT PARTS. . . . . . . . . . . . . . . . . . . . . . . . .3

PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . .3

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

SEQUENCE OF OPERATION. . . . . . . . . . . . . . . . . . . .13

MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

See the following page for a complete Table of Contents.

AFFINITY™ SERIES

SINGLE PACKAGE HEAT PUMPS

MODEL: B1HA036 thru 060

3 thru 5 Ton

(10 SEER)

NOTES, CAUTIONS AND WARNINGS

Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes
intended to clarify or make the installation easier.
Cautions
Warnings
injury and/or equipment damage may result if instal­lation procedure is not handled properly.

CAUTION: READ ALL SAFETY GUIDES BEFORE
YOU BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

are given to prevent equipment damage.

are given to alert installer that personal

are

ISO 9001

Certified Quality

Management System

341849-YIM-A-0108

TABLE OF CONTENTS

341849-YIM-A-0108

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . .3

PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . .3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . 4

CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . 5

SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . 5

THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

POWER AND CONTROL WIRING . . . . . . . . . . . . . . . 5

COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

CHECKING SUPPLY AIR CFM . . . . . . . . . . . . . . . . .9

SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . .13

ANTI-SHORT CYCLE TIMER . . . . . . . . . . . . . . . . . . 13

COOLING OPERATION . . . . . . . . . . . . . . . . . . . . . . 13

HEATING OPERATION . . . . . . . . . . . . . . . . . . . . . . 13

DEFROST OPERATION . . . . . . . . . . . . . . . . . . . . .13

HEAT PUMP SAFETY SWITCH OPERATION . . . . 14

ELECTRIC HEAT LIMIT SWITCH OPERATION . . .14

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . 15

LIST OF FIGURES

Fig. # Pg. #

1 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . .4

2 TYPICAL FIELD WIRING DIAGRAM . . . . . . . . . . . . . . 6

3 COIL DELTA P VS. SUPPLY AIR CFM . . . . . . . . . . . .9

4 DIMENSIONS AND CLEARANCES . . . . . . . . . . . . . .12

5 TYPICAL WIRING DIAGRAM (230-3-60 POWER

SUPPLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Fig. #
6 TYPICAL WIRING DIAGRAM BHA MODELS

(460-3-60 AND 575-3-60 POWER SUPPLY) . . . . . . . 17

7 TYPICAL WIRING DIAGRAM LEGEND . . . . . . . . . . . 18

8 TYPICAL WIRING DIAGRAM NOTES . . . . . . . . . . . . 18

Pg. #

LIST OF TABLES

Tbl. # Pg. #

1 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . 4

2 UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 ELECTRICAL DATA (HEAT PUMP /

ELECTRIC HEAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 ELECTRICAL DATA (BASIC UNIT) . . . . . . . . . . . . . . . 7

6 SIDE & BOTTOM SUPPLY AIR BLOWER

PERFORMANCE 230/460/575 VOLTS . . . . . . . . . . . . 8

7 SIDE & BOTTOM SUPPLY AIR BLOWER

PERFORMANCE 208 VOLTS . . . . . . . . . . . . . . . . . . . 8

8 ADDITIONAL STATIC PRESSURE RESISTANCE . . . 8
9 COOLING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 1,200 CFM (B1HA036) . . . . . . . . . . . . . . 10

10 HEATING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 1,200 CFM (B1HA036) . . . . . . . . . . . . . . 10

11 COOLING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 1,400 CFM (B1HA042) . . . . . . . . . . . . . . 10

12 HEATING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 1,400 CFM (B1HA042) . . . . . . . . . . . . . . 10

13 COOLING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 1,600 CFM (B1HA048) . . . . . . . . . . . . . . 11

14 HEATING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 1,600 CFM (B1HA048) . . . . . . . . . . . . . . 11

15 COOLING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 2,000 CFM (B1HA060) . . . . . . . . . . . . . . 11

16 HEATING SUPERHEAT AT COMPRESSOR SUCTION,

AIRFLOW = 2,000 CFM (B1HA060) . . . . . . . . . . . . . . 11

17 THERMOSTAT SIGNALS (THREE PHASE

UNITS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2 Johnson Controls Unitary Products

341849-YIM-A-0108

GENERAL

YORK Model B1HA units are factory assembled heat
pumps designed for outdoor installation on a rooftop 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.

INSPECTION

As soon as a unit is received, it should be inspected for
possible damage during transit. If damage is evident,
the extent of the damage should be noted on the car­rier's freight bill. A separate request for inspection by
the carrier's agent should be made in writing.

REFERENCE

Additional information on the design, installation, oper­ation and service of this equipment is available in the
following reference forms:

REPLACEMENT PARTS

Contact your local York® parts distribution center for
authorized replacement parts.

This product must be installed in strict compli­ance with the enclosed installation instructions
and any applicable local, state, and national
codes including, but not limited to, building,
electrical, and mechanical codes.

Improper installation may create a condition
where the operation of the product could cause
personal injury or property damage.

De-energize the electrical power to the unit
before attempting to inspect, repair or perform
maintenance to the unit.

• 341849 - General Installation

• 035-16605-003 - Electric Heater Accessory

PRODUCT NOMENCLATURE

B 1 H A A

PRODUCT CATEGORY

B = Single Package Heat Pumps
(Air Cooled)

PRODUCT GENERATION

1 = NEW or Current Design

PRODUCT IDENTIFIER

HA = Heat Pump (10 SEER)

PRODUCT NOMENCLATURE

30 6 2 5

NOMINAL COOLING

CAPACITY (MBH)

036 = 36,000 BTUH
042 = 42,000 BTUH
048 = 48,000 BTUH
060 = 60,000 BTUH

VOLTAGE CODE

25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60

FACTORY

INSTALLED ELECTRIC HEAT

A = No Electric Heat Installed

Johnson Controls Unitary Products 3

341849-YIM-A-0108

INSTALLATION

LIMITATIONS

These units must be installed in accordance with the
following national and local safety codes.

1. National Electrical Code ANSI/NFPS No. 70 or Cana­dian Electrical Code Part 1, C22.1 (latest ed itions).

2. Local plumbing and waste water codes and other
applicable local codes.

Refer to Table 1 for unit application data and to Table 4
for electric heat application data.

If components are to be added t o a unit to meet local
codes, they are to be installed at the dealer's and/or
the customer's expense.

Size of unit for proposed installation should be based
on heat loss/heat gain calculations made in accor­dance with industry recognized procedures identified
by the Air Conditioning Contractors of America.

TABLE 1: Unit Application Data

Voltage Variation,

Min./Max.

Wet Bulb Temperature (°F) of Air on

Dry Bulb Temperature (

1. Rated in accordance with ARI Standard 110, utilization
range “A”.

2. “T1" transformer primary tap must be moved from the 230
volt connection to the 208 volt connection for low voltage
applications of 208 volt and below.

3. A low ambient accessory is available for operation down to
0°F.

1

Evaporator Coil, Min./Max.

Condenser Coil, Min.

208/230 V

°F) of Air on

3

/Max.

2

460 V 414/504
575 V 518/630

LOCATION

187/253

57/72

45/120

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.

RIGGING AND HANDLING

Care must be exercised when moving the unit. Do not
remove any packaging until the unit is near the pla ce of
installation. Rig unit with slings placed under the unit.
Spreader bars of sufficient length should be used
across the top of the unit.

BEFORE LIFTING A UNIT, MAKE SURE THAT ITS
WEIGHT IS DISTRIBUTED EQUALLY ON THE
CABLES SO THAT IT WILL LIFT EVENLY.

Units may also be moved or lifted with a fork-lift. Slot­ted openings in the skid are provided for this purpose.
Forks must pass completely through the base.

Refer to Table 2 for unit weights and to Figure 1 for
approximate center of gravity.

TABLE 2: Unit Dimensions

Shipping

Size

036 367 362 100 96 84 87
042 394 389 107 103 90 93
048 445 440 121 117 102 105
060 490 485 133 129 112 116

FRONT

OF

UNIT

Weight

(lbs.)

49 1/8

Operating

Weight

(lbs.)

“D”

“A”

“B”

25

Dimensions

“A” “B” “C” “D”

CENTER OF GRAVITY

“C”

22

49 1/4

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 will
support the weight of the unit plus any field

4 Johnson Controls Unitary Products

FIGURE 1 - Center of Gravity
CLEARANCES

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

Do not permit overhanging structures or shrubs
to obstruct the condenser air discharge outlets.

341849-YIM-A-0108

DUCTWORK

These units are adaptable to downflow use as well as
rear supply and return air duct openings. To convert to
downflow, use the following steps:

1. Remove the duct covers found in the bottom return
and supply air duct openings. There are four (4)
screws securing each duct cover (save these screws
to use later).

2. Install the duct covers, removed in step one, to the
rear supply and return air duct openings. Secure
with the four (4) screws used in step one.

3. Seal duct covers with silicone caulk.

Downflow units must have an “L”-shape d supply duct
without any outlets or registers located below the outlet
of the unit.

Duct work should be designed and sized according to
the methods of the Air Conditioning Contractors of
America (ACCA), as set forth in their Manual D.

A closed return duct system shall be used. This shall
not preclude use of economizers or ventilation air
intake. Flexible joints may be used in the supply and
return duct work to minimize the transmission of noise.

CONDENSATE DRAIN

A condensate trap is required to be installed in the con­densate drain. The plumbing must conform to local
codes. Use a sealing compound on male pipe threads.
Install the condensate drain line (3/4“ NPTF) to spill
into an open drain.

SERVICE ACCESS

Access to all serviceable components is provided by
the following removable panels:

• Blower service access

• Electrical/Filter access

• Compressor service access
Refer to Figure 4 for locatio n of these access panels

and minimum clearances.

THERMOSTAT

The room thermostat should be located on an inside
wall approximately 56" above the floor where it will not
be subject to drafts, sun exposure or heat from electri­cal fixtures or appliances. Follow manufacturer's
instructions enclosed with the thermostat for general
installation procedure. Six color coded insulated wires
(minimum #18 AWG) should be used to connect ther­mostat to unit. See Figure 2.

When fastening ductwork to side duct flanges
on unit, insert screws through duct flanges
only. DO NOT insert screws through casing.
Outdoor ductwork must be insulated and
waterproofed.

NOTE: Be sure to note supply and return openings.
Refer to Figure 4 for information concerning rear and

bottom supply and return air duct openings.

FILTERS

A filter rack and high velocity filters are standard on
three phase units.

Filters must always be used a nd must be kept clean.
When filters become dirt laden, insufficient air will be
delivered by the blower, decreasing your units effi­ciency and increasing operating costs and wear-and­tear on the unit and controls.

Filters should be checked monthly especially since this
unit is used for both heating and cooling.

POWER AND CONTROL WIRING

Field wiring to the unit must conform to provisions of
the current N.E.C. ANSI/NFPA No. 70 or C.E.C. 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 terminals
during starting and running conditions are indicated on
the unit Rating Plate and Table 4.

The wiring entering the cabinet must be provided with
mechanical strain relief.

A fused disconnect switch should be field provided for
the unit. If any of the wire supplied with the unit must be
replaced, replacement wire must be of the type shown
on the wiring diagram.

Electrical line must be sized properly to carry the load.
Each unit must be wired with a separate branch circuit
fed directly from the meter panel and properly fused.

Refer to Figure 2 for typical field wiring and to the
appropriate unit wiring diagram for control circuit and
power wiring information.

Johnson Controls Unitary Products 5

COMPRESSORS

Units are shipped with compressor mountings factory­adjusted for shipping.

CONTROL WIRING

341849-YIM-A-0108

Loosen compressor bolts half turn before
operating unit.

THERMOSTAT

** = Minimum wire size of 18 AWG

wire should be used for all field
installed 24 volt wire.

PROGRAMMABLE

THERMOSTAT ONLY

UNIT TERMINAL STRIP

**

*

NOTE:
HEAT ANTICIPATOR
SHOULD BE SET AT 0.25
AMPS FOR ALL MODELS.

24 VOLT TRANSFORMER

* = Only required on units with

supplemental electric heat.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can

cause improper and dangerous operation. Verify proper operation after servicing.

POWER WIRING

REFER TO ELECTRICAL DATA

TABLES TO SIZE THE

DISCONNECT SWITCH,

WIRING & OVERCURRENT

PROTECTION.

FIGURE 2 - Typical Field Wiring DIagram

TABLE 3: Physical Data

Models

Indoor

Blower

Indoor

Coil

Outdoor

Fan

Outdoor

Coil

Charge Refrigerant 22 (Lbs./oz.) 5/5 6/0 9/0 10/0

Filter Face Area (Sq. Ft./qty./size) 4.28/2/14" x 22"

Compressor Hermetic Type, (Qty. = 1) Scroll Recip. Scroll Scroll

Centrifugal Blower (Dia. X Wd. In.)

Fan Motor Hp

Rows Deep

Fins Per Inch

Face Area (Sq. Ft.)

Propeller Dia. (In.)

Fan Motor Hp

Nom. CFM Total

Rows Deep

Fins Per Inch

Face Area (Sq. Ft.)

036 042 048 060

10 x 8 11 x 10 11 x 10 11 x 10

3/4 3/4 3/4 1

3333

15 15 16 16

4.38 4.38 5.62 5.62
22 22 22 22

1/41/41/41/4

2,400 2,400 2,800 2,800

1111

20 20 16 20

11.7 11.7 16.4 16.4

BHA

6 Johnson Controls Unitary Products

341849-YIM-A-0108

TABLE 4: Electrical Data (Heat Pump / Electric Heat)

OD Fan

Motors

(each)

Size Volt

Compressors

(each)

RLA LRA FLA FLA Model Stages kW Amps

036 208/230-3-60 10.9 78.0 1.1 3.5

042 208/230-3-60 12.8 88.0 1.1 3.5

048 208/230-3-60 14.1 105.0 1.5 4.0

060 208/230-3-60 16.0 125.0 1.5 7.0

036 460-3-60 5.8 40.0 0.6 1.8

042 460-3-60 5.8 42.0 0.6 1.8

048 460-3-60 7.1 55.0 0.8 2.0

060 460-3-60 8.0 67.0 0.8 3.5

036 575-3-60 4.5 32.0 0.4 1.5

042 575-3-60 5.8 44.0 0.4 1.5

048 575-3-60 5.6 44.0 0.6 1.6

060 575-3-60 6.4 50.0 0.6 2.8

1. Dual element, time delay type.

2. Standard circuit breakers may be used in Canada and on applications over 60 amps where the heaters are separately fused.

3. KW listed is for 240 volts, use table at top of next page for 208 or 230 volts.

4. KW listed is for 480 volts, use table at top of next page for 460 volts.

5. KW listed is for 600 volts, use table at top of next page for 575 volts.

Supply
Blower

Motor

Electric Heat Option

2NH04501025 1 7.5/10.0
2NH04501525 1 11.3/15.0
2NH04501025 1 7.5/10.0
2NH04501525 1 11.3/15.0
2NP04501025 1 7.5/10.0
2NP04501525 1 11.3/15.0
2NP04502025 2 15.0/20.0
2NH04502525 2 18.8/25.0
2NH04501025 1 7.5/10.0
2NH04501525 1 11.3/15.0
2NH04502025 2 15.0/20.0
2NH04502525 2 18.8/25.0
2NH04501046 1 10.0
2NH04501546 1 15.0
2NH04501046 1 10.0
2NH04501546 1 15.0
2NP04501046 1 10.0
2NH04501546 1 15.0
2NH04502046 2 20.0
2NH04502546 2 25.0
2NH04501046 1 10.0
2NH04501546 1 15.0
2NP04502046 2 20.0
2NP04502546 2 25.0
2NH04501058 1 10.0
2NH04501558 1 15.0
2NH04501058 1 10.0
2NH04501558 1 15.0
2NH04501058 1 10.0
2NH04501558 1 15.0
2NH04502058 2 20.0
2NH04502558 2 25.0
2NH04501058 1 10.0
2NH04501558 1 15.0
2NP04502058 2 20.0
2NP04502558 2 25.0

MCA

(Amps)

3

20.8/24.1 44.3/48.3 45/50 45/50

3

31.3/36.1 57.3/63.3 60/70 60/70

3

20.8/24.1 46.9/50.7 50/60 50/60

3

31.3/36.1 59.7/65.7 60/70 60/70

3

20.8/24.1 49.2/53.2 50/60 50/60

3

31.3/36.1 62.2/68.2 70/70 70/70

3

41.7/48.1 75.3/83.3 80/90 80/90

3

52.1/60.1 88.3/98.3 90/100 90/100

3

20.8/24.1 54.6/58.6 60/60 60/60

3

31.3/36.1 67.6/73.6 70/80 70/80

3

41.7/48.1 80.7/88.7 90/90 90/90

3

52.1/60.1 93.7/103.7 100/110 100/110

4

12.8 24.6 25 25

4

18.0 32.2 35 35

4

12.0 24.7 25 25

4

18.0 32.2 35 35

4

12.0 26.7 30 30

4

18.0 34.2 35 35

4

24.1 41.7 45 45

4

30.1 49.3 50 50

4

12.0 29.4 30 30

4

18.0 36.9 40 40

4

24.1 44.4 45 45

4

30.1 51.9 60 60

5

9.6 19.6 20 20

5

14.4 25.6 30 30

5

9.6 21.1 25 25

5

14.4 27.2 30 30

5

9.6 21.3 25 25

5

14.4 27.3 30 30

5

19.2 33.3 35 35

5

24.1 39.3 40 40

5

9.6 23.4 25 25

5

14.4 29.5 30 30

5

19.2 35.5 40 40

5

24.1 41.5 45 45

Max Fuse/

Breaker Size

(Amps)

Max HACR

1

Breaker Size

2

TABLE 5: Electrical Data (Basic Unit)

Voltage

Size Volt

Limitations
Min. Max. RLA LRA FLA FLA

036 208/230-3-60 187 253 10.9 78.0 1.1 3.5 18.2 25 25 .96 75
042 208/230-3-60 187 253 12.8 88.0 1.1 3.5 20.6 25 25 .96 75
048 208/230-3-60 187 253 14.1 105.0 1.5 4.0 23.1 30 30 .96 75
060 208/230-3-60 187 253 16.0 125.0 1.5 7.0 28.5 40 40 .96 75
036 460-3-60 414 504 5.8 40.0 0.6 1.8 9.6 15 15 .96 75
042 460-3-60 414 504 5.8 42.0 0.6 1.8 9.7 15 15 .96 75
048 460-3-60 414 504 7.1 55.0 0.8 2.0 11.7 15 15 .96 75
060 460-3-60 414 504 8.0 67.0 0.8 3.5 14.3 20 20 .96 75
036 575-3-60 518 630 4.5 32.0 0.4 1.5 7.6 15 15 .96 75
042 575-3-60 518 630 5.8 44.0 0.4 1.5 9.1 15 15 .96 75
048 575-3-60 518 630 5.6 44.0 0.6 1.6 9.3 15 15 .96 75
060 575-3-60 518 630 6.4 50.0 0.6 2.8 11.4 15 15 .96 75

1. Rated in accordance with ARI Standard 110, utilization range “A”.

2. Dual element, time delay type.

Johnson Controls Unitary Products 7

1

Compressors

(each)

OD Fan

Motors

(each)

Supply
Blower

Motor

MCA

(Amps)

Max Fuse

2

Size

(Amps)

Max HACR

Breaker Size

Unit Power

Factor

Transformer

Size (VA)

341849-YIM-A-0108

kW. Capacity

Multiplier

Electric Heat

Correction

Factors

Nominal Voltage Voltage

240
480 460 .92

600 575 .92

208 .75
230 .92

TABLE 6: Side & Bottom Supply Air Blower Performance 230/460/575 Volts

Blower

Size

Speed

High - - - - - - - - 1414 617 1317 688 1219 660 1116 533 1013 507 910 480 - -

036

Medium - - - - 1472 647 1394 626 1297 495 1199 465 1102 435 985 397 - - - - - -

Low 1462 526 1400 506 1337 486 1275 467 1167 440 1100 414 1012 387 - - - - - - - -

High - - - - - - - - 1697 740 1580 706 1463 672 1339 640 1216 608 1092 576 - -

042

Medium - - - - - - 1673 830 1566 594 1439 558 1322 522 1182 476 - - - - - -

Low - - 1680 607 1608 584 1630 660 1425 528 1320 496 1214 464 1050 420 - - - - - -

High - - - - - - 1947 882 1867 857 1786 832 1706 807 1637 782 1569 757 1500 732 - -

048

Medium 1876 792 1829 772 1783 753 1736 733 1668 706 1599 680 1531 653 1434 622 1337 591 1240 560 - -

Low 1544 620 1508 610 1472 600 1436 590 1375 573 1313 557 1252 540 - - - - - - - -

High - - - - - - 2499 1290 2391 1233 2283 1177 2175 1120 2067 1080 1958 1040 1850 1000 - -

036

Medium - - 2454 1163 2387 1117 2320 1070 2229 1023 2137 977 2046 930 1950 887 1854 843 1758 800 - -

Low 2242 1090 2201 1053 2161 1017 2120 980 2041 927 1962 873 1883 820 1797 787 1711 753 1625 720 - -

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W

External Static Pressure (Inch Water Gauge)

TABLE 7: Side & Bottom Supply Air Blower Performance 208 Volts

Blower

Size

Speed

High - - - - 1440 608 1381 571 1273 656 1185 530 1097 604 1004 480 912 456 - - - -

036

Medium 1465 631 1395 512 1325 492 1255 473 1167 446 1079 419 952 392 - - - - - - - -

Low 1316 473 1260 455 1204 438 1148 420 1069 396 990 372 911 348 - - - - - - - -

High - - - - 1728 725 1633 697 1527 666 1422 636 1317 606 1205 676 1094 547 - - - -

042

Medium - - 1674 614 1590 590 1506 567 1400 636 1296 602 1190 470 1063 428 - - - - - -

Low 1679 867 1612 646 1449 526 1377 504 1282 476 1188 447 1093 418 - - - - - - - -

High - - 1982 870 1939 850 1897 830 1813 800 1728 770 1644 740 1559 707 1474 673 1389 640 - -

048

Medium 1694 690 1662 673 1629 657 1597 640 1542 623 1486 607 1431 590 1336 563 1240 537 - - - -

Low 1385 520 1349 510 1312 500 1276 490 1235 480 - - - - - - - - - - - -

High - - - - 2450 1213 2366 1165 2282 1117 2198 1068 2114 1020 1989 993 1864 967 1739 940 - -

036

Medium 2339 1170 2275 1118 2211 1067 2147 1015 2083 963 2019 912 1955 860 1854 824 1753 788 1652 752 - -

Low 1929 940 1877 903 1824 867 1772 830 1720 793 1667 757 1615 720 1586 706 1557 691 1528 677 - -

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W CFM W

External Static Pressure (Inch Water Gauge)

TABLE 8: Additional Static Press ure Resistance

Description

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

Wet Indoor Coil 0.01 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.05 0.05 0.06 0.07
Economizer 0.00 0.00 0.00 0.01 0.01 0.01 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.07 0.08 0.08
Filter/Frame Kit 0.01 0.02 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.04 0.05 0.05 0.06 0.06 0.07
Electric Heat 0.02 0.03 0.03 0.03 0.04 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.01 0.11 0.11 0.12

1. Deduct these resistance values from the available external static pressures shown in the respective Blower Perf ormance Table.

2. The pressure thru the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than

0.25 IWG, the unit will deliver less CFM during full economizer operation.

8 Johnson Controls Unitary Products

1,2

Resistance, IWG

CFM

341849-YIM-A-0108

CHECKING SUPPLY AIR CFM

To check the supply air CFM after the initial balancing
has been completed:

1. Remove the two ¼ inch dot plugs in the duct panel.

2. Insert at least 8 inches of ¼ inch tubing into each of
these holes for sufficient penetration into the air­flow on both sides of the indoor coil.

3. Using an inclined m anometer, determine the pres­sure drop across the dry evaporator coil. Since the
moisture on an evaporator coil may vary greatly,
measuring the pressure drop across a wet coil
under field conditions would be inaccurate. To
ensure a dry coil, the compressors should be deac­tivated while the test is being run.

B1HA Coil Delta

4. Knowing the pressure drop across a dry coil, the
actual CFM through the unit can be determined
from the curve in Coil Delta P vs. Supply Air CFM
Figure 3.

Failure to properly adjust the total system air
quantity can result in extensive system damage.

After readings have been obtained, remove the tubes
and reinstall the two ¼ inch plugs removed in Step 1.

NOTE: De-energize the compressors before taking any

test measurements to ensure a dry indoor coil.

B1HA036

B1HA048-60

B1HA042

Delta Static (IWG)

FIGURE 3 - Coil Delta P vs. Supply Air CFM

Linear B1HA036
Linear B1HA042
Linear B1HA048-60

Airflow (CFM)

Johnson Controls Unitary Products 9

341849-YIM-A-0108

TABLE 9: Cooling Superheat at Compressor Suction, Airflow = 1,200 CFM (B1HA036)

Outdoor

Temperature

°F

65 12.8 16.1 19.3 22.5 25.8 29.0 32.2 35.0 37.7 40.4 43.1
70 11.4 14.3 17.2 20.1 22.9 25.8 28.7 31.6 34.4 37.3 40.1
75 9.9 12.5 15.0 17.6 20.1 22.7 25.2 28.2 31.1 34.1 37.1
80 8.5 10.7 12.9 15.1 17.3 19.5 21.7 24.8 27.9 31.0 34.0
85 7.0 8.9 10.8 12.6 14.5 16.3 18.2 21.4 24.6 27.8 31.0
90 5.6 7.1 8.6 10.1 11.7 13.2 14.7 18.0 21.3 24.7 28.0

95 - 5.3 6.5 7.7 8.8 10.0 11.2 14.6 18.1 21.5 25.0
100 - - 5.1 6.0 6.9 7.8 8.7 11.7 14.7 17.7 20.7
105 - - - - - 5.6 6.2 8.7 11.3 13.9 16.4
110 - - - - - - - 5.8 7.9 10.0 12.2
115 ---------6.27.9

55 57 59 61 63 65 67 69 71 73 75

Indoor WB Temperature, °F

TABLE 10: Heating Superheat at Compressor Suction, Airflow = 1,200 CFM (B1HA036)

Indoor DB

Temperature

°F

55 9.7 10.1 10.7 11.8 13.7 17.0 22.6 32.2

70 - - - - 4.6 7.8 13.4 23.0

80 ------7.316.9

-10 0 10 20 30 40 50 60

Heating Superheat at Compressor Suction, °F

TABLE 11: Cooling Superheat at Compressor Suction, Airflow = 1,400 CFM (B1HA042)

Outdoor

Temperature

°F

65 34.0 34.2 34.4 34.6 34.8 35.0 35.2 36.2 37.3 38.4 39.4

70 31.1 31.5 31.9 32.2 32.6 33.0 33.4 34.8 36.3 37.7 39.2

75 28.3 28.8 29.4 29.9 30.5 31.0 31.6 33.4 35.3 37.1 39.0

80 25.4 26.1 26.9 27.6 28.3 29.1 29.8 32.0 34.3 36.5 38.7

85 22.6 23.5 24.4 25.3 26.2 27.1 28.0 30.6 33.2 35.9 38.5

90 19.7 20.8 21.9 23.0 24.0 25.1 26.2 29.2 32.2 35.2 38.3

95 16.9 18.1 19.4 20.6 21.9 23.2 24.4 27.8 31.2 34.6 38.0
100 14.5 15.6 16.6 17.7 18.7 19.7 20.8 24.4 27.9 31.5 35.1
105 12.2 13.1 13.9 14.7 15.5 16.3 17.1 20.9 24.6 28.4 32.1
110 9.9 10.5 11.1 11.7 12.3 12.9 13.5 17.4 21.3 25.3 29.2
115 7.6 8.0 8.4 8.8 9.1 9.5 9.9 14.0 18.1 22.1 26.2

55 57 59 61 63 65 67 69 71 73 75

Indoor WB Temperature, °F

TABLE 12: Heating Superheat at Compressor Suction, Airflow = 1,400 CFM (B1HA042)

Indoor DB

Temperature

°F

55 5.1 5.5 6.2 7.4 9.6 13.5 20.3 32.4

70 - - - - 5.0 8.9 15.7 27.8

80 - - - - - 5.4 12.2 24.3

-10 0 10 20 30 40 50 60

Outdoor Temperature, °F

10 Johnson Controls Unitary Products

341849-YIM-A-0108

TABLE 13: Cooling Superheat at Compressor Suction, Airflow = 1,600 CFM (B1HA048)

Outdoor

Temperature

°F

65 11.4 12.4 13.5 14.6 15.7 16.8 17.9 19.3 20.7 22.1 23.5
70 10.3 11.2 12.2 13.1 14.0 14.9 15.9 17.4 18.9 20.4 21.9
75 9.3 10.0 10.8 11.6 12.3 13.1 13.9 15.4 17.0 18.6 20.2
80 8.2 8.8 9.4 10.0 10.6 11.2 11.8 13.5 15.2 16.9 18.5
85 7.2 7.7 8.1 8.5 9.0 9.4 9.8 11.6 13.4 15.1 16.9
90 6.5 7.0 7.4 7.9 8.3 8.8 9.2 10.6 12.0 13.4 14.8

95 5.9 6.3 6.8 7.2 7.7 8.1 8.6 9.6 10.6 11.6 12.6
100 - 5.5 6.1 6.6 7.2 7.8 8.4 9.3 10.3 11.3 12.3
105 - - 5.4 6.1 6.8 7.5 8.2 9.1 10.1 11.0 11.9
110 - - - 5.5 6.3 7.2 8.0 8.9 9.8 10.7 11.6
115 - - - - 5.9 6.9 7.8 8.7 9.5 10.4 11.2

55 57 59 61 63 65 67 69 71 73 75

Indoor WB Temperature, °F

TABLE 14: Heating Superheat at Compressor Suction, Airflow = 1,600 CFM (B1HA048)

Indoor DB

Temperature

°F

55 8.3 8.4 8.6 9.0 10.1 12.4 17.4 28.6

70 -----4.29.220.4

80 ------5.716.9

-10 0 10 20 30 40 50 60

Heating Superheat at Compressor Suction, °F

TABLE 15: Cooling Superheat at Compressor Suction, Airflow = 2,000 CFM (B1HA060)

Outdoor

Temperature

°F

65 26.7 27.6 28.5 29.4 30.3 31.2 32.1 33.0 33.9 34.8 35.7

70 21.9 23.0 24.1 25.2 26.3 27.4 28.5 30.0 31.4 32.8 34.3

75 17.0 18.3 19.7 21.0 22.3 23.7 25.0 27.0 28.9 30.9 32.9

80 12.2 13.7 15.3 16.8 18.4 19.9 21.5 24.0 26.5 29.0 31.4

85 7.3 9.1 10.8 12.6 14.4 16.2 17.9 20.9 24.0 27.0 30.0

90 7.2 8.3 9.4 10.6 11.7 12.8 13.9 17.3 20.6 23.9 27.2

95 7.0 7.5 8.0 8.5 9.0 9.5 9.9 13.6 17.2 20.8 24.4
100 7.2 7.6 8.0 8.3 8.7 9.1 9.5 12.4 15.3 18.2 21.1
105 7.4 7.7 7.9 8.2 8.5 8.7 9.0 11.2 13.4 15.6 17.8
110 7.6 7.8 7.9 8.1 8.2 8.4 8.5 10.0 11.5 13.0 14.4
115 7.8 7.8 7.9 7.9 8.0 8.0 8.1 8.8 9.6 10.3 11.1

55 57 59 61 63 65 67 69 71 73 75

Indoor WB Temperature, °F

TABLE 16: Heating Superheat at Compressor Suction, Airflow = 2,000 CFM (B1HA060)

Indoor DB

Temperature

°F

55 5.5 5.7 6.2 6.8 8.0 9.9 13.1 18.6

70 -----4.88.013.4

80 ------5.611.0

-10 0 10 20 30 40 50 60

Outdoor Temperature, °F

Johnson Controls Unitary Products 11

341849-YIM-A-0108

HIGH VOLTAGE CONN.

LOW VOLTAGE CONN.

" DIA. KNOCKOUT

SIDE SUPPLY
AIR OPENING

SIDE RETURN

AIR OPENING

LOW VOLTAGE

CONN.

" DIA. KNOCK

HIGH VOLTAGE CONN.

" DIA. KNOCKOUT

" DIA. KNOCKOUT

-

49

(OVERALL)

FRONT

2

1

4

HIGH VOLTAGE

CONN.

KNOCKOUT

" x " DIA.

FRONT

“A”

(OVERALL)

2

COMPRESSOR

SERVICE ACCESS

COMPARTMENT PANEL

UNIT SIZE

036 - 042

048 - 060

HIGH VOLTAGE CONN.

(OVERALL)

UNIT CONDENSATE

CONNECTION

(TRAP REQUIRED)

" NPTI

All dimensions are in inches. They are
subject to change without notice. Certified
dimensions will be provided upon request.

DIMENSION

“A”

33

41

REFRIGERANT

CONNECTIONS

ELECTRICAL/FILTER

SERVICE ACCESS

COMPARTMENT PANEL

" DIA. KNOCKOUT

6

CONDENSATE
DRAIN

" NPTI

BOTTOM SUPPLY

AIR OPENING

CLEARANCES

(Minimum)
Front 12"
Back 0"
Left Side (Filter Access) 24"
Right Side 24"
Below Unit

Above Unit

1. Units may be installed on combustible floors made from wood or
class A, B or C roof covering material.

2. Units must be installed outdoors. Overhanging structures or
shrubs should not obstruct outdoor air discharge outlet.

1

2

0"
36"

(For Condenser Air Discharge)

OUTDOOR

COIL

1

SIDE SUPPLY
AIR OPENING

BACK

SIDE RETURN

AIR OPENING

2

15

15

1

15

1

4

BOTTOM RETURN

AIR OPENING

FIGURE 4 - Dimensions and Clearances

12 Johnson Controls Unitary Products

341849-YIM-A-0108

SEQUENCE OF OPERATION

ANTI-SHORT CYCLE TIMER

This unit has an anti-short cycle timer built in to the
defrost control. This timer will not permit the compres­sor to start within five minutes after the completion of
the last cycle or power interruption. To bypass the anti­short cycle feature, short the “TEST” pins together for 2
seconds.

The following sequences of operation are based on
using a standard single-stage heat pump thermostat.

COOLING OPERATION

WITH POWER TO UNIT AND THERMOSTAT IN
COOLING MODE.

1. If the fan switch on the thermostat is in the “ON” posi­tion, the 24 volts at “G” will energize the “K1" relay on
the fan control board, close the ”K1" relay contacts,
and energize the indoor blower motor. If the fan
switch on the thermostat is in the “AUTO” position,
the blower will operate only when there is a call for
cooling by the thermostat.

2. On a call for cooling, the thermostat will send 24
volts to “Y” and “O” on the fan control board. After
the anti-short cycle period is complete ,The 24 volt
signal will energize contactor “M1", and the revers­ing valve solenoid. Power will be supplied to the
compressor and outdoor fan mo to r, and the revers­ing valve will switch to the cooling position. If the
fan switch on the thermostat is on the ”AUTO" posi ­tion, the fan control will energize the indoor blower.

3. When the demand for cooling has been satisfied,
the 24 volt “Y” signal is removed and the “M1" con­tactor will be de-energized. If the fan switch on the
thermostat is in the ”ON" position, the indoor blower
will continue to run. If the fan switch is in the “AUTO”
position, the “K1" relay will open and de-energize
the indoor blower motor after a 60 second delay,

HEATING OPERATION

WITH POWER TO UNIT AND THERMOSTAT IN
HEATING MODE.

1. If the fan switch on the thermostat is in the “ON” posi­tion, the 24 volts at “G” will energize the “K1" relay on
the fan control board, close the ”K1" relay contacts,
and energize the indoor blower motor. If the fan
switch on the thermostat is in the “AUTO” position,
the blower will operate only when there is a call for
heating by the thermostat.

2. On a call for heating, the thermostat will send 24 volts
to “Y” on the fan control board. After the anti-short
cycle period is complete, the 24 volts signal will ener­gize contactor coil “M1" and power will be supplied to
the compressor and outdoor fan motor. The reversing
valve will remain in the heating position. If the fan
switch on the thermostat is in the ”AUTO" position,
the fan control will energize the indoor blower.

3. For units equipped with supplementary electric
heat, if the heat pump cannot meet the demand,
the thermostat “W” will send 24 volts to “W2" on the
fan control board. This signal will also be sent
through the defrost control terminals ”W" and “W1/
66" and back to the fan control ”W1". This 24 volt
signal will energize all stages of electric heat.

4. When the heating demand is satisfied, the electric
heat will be de-energized when the 24 volt “W”
signal is removed, and the “M1" contactor will be
de-energized when the 24 volt ”Y" signal is
removed. If the fan switch on the thermostat is in
the “ON” position, the indoor blower will continue to
run. If the fan switch is in the “AUTO” position, the
“K1" relay will open and de-energize the indoor
blower motor after the appropriate time delay.

Please refer to Table 17 for more information.

DEFROST OPERATION

The minimum time between defrosts can be field
selected at 30, 60 or 90 minutes. The default time is 90
minutes if the jumper is not installed.

Defrost will initiate when the defrost sensor, located on
the outdoor coil, senses a temperature below 31°F and
when the time since the last defrost is greater than the
selected time on the defrost control. The defrost cycle
terminates when either the defrost sensor reaches
55°F or the unit has been in defrost mode for 10 min­utes. If the room thermostat opens during defrost, the
unit will resume operation in defrost when the thermo­stat re-closes.

During the defrost mode, the defrost control will provide
a 24 volt signal from terminal “W1/66" to the fan control
terminal ”W1". This signal will energize electric heat
stage 1, if the unit is so equipped.

For trouble shooting purposes, the defrost cycle can be
manually initiated by shorting the “TEST” pins together
for 5 seconds. Defrost will terminate normally during
the “TEST” mode.

Johnson Controls Unitary Products 13

341849-YIM-A-0108

HEAT PUMP SAFETY SWITCH OPERATION

If the unit is equipped with the field installed upgrade
safety package, the refrigeration system will be pro­tected against high or low refrigerant pressure and low
indoor coil temperature. If any of these three safety
switches opens, the unit will be shut off for the 5 minute
anti-short cycle time. Once this has e xpired, a six hour
elapsed run timer begins. If a second opening of a
safety switch occurs during this six hour period, the
compressor will be locked out.

Resetting the lockout function is accomplished by;

ELECTRIC HEAT LIMIT SWITCH OPERATION

The limit switch responds to over temperature condi­tions in the air duct. Opening of the device results in
dropping power to the relays. The control logic will also
respond by turning off the relays. After four limit cycle
trips the unit goes into a 1 hour soft lockout period. If
during this period the control “sees” another limit cycle,
the unit will go into a hard lockout condition. Once in a
hard lockout state, the fan is locked on and the heaters
are disabled. Only a power cycle will clear the state.

During the soft lockout period, the fan responds to
thermostat input but the heaters are enabled. This is

1. Removing power from the control's thermostat 1st
stage (Y) input for a time not to exceed 5 seconds
(ON-OFF-ON).

2. Removing power from “R” for more than 2 sec­onds.

to sense a failed heater relay. 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.

3. Shorting the “TEST” pins together for more than 2
seconds.

TABLE 17: Thermostat Signals (Three Phase Units)

SIGNAL STATE BOARD FUNCTION

“G”

“G” & “Y” & “O”

“G” & “Y”

“G” & “W”

“G” & “Y” & “W”

“W”

ON FAN INSTANT ON

OFF FAN INSTANT OFF

FAN INSTANT ON

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)
REVERSING VALVE ENERGIZED
SYSTEM OPERATES IN COOLING

COMPRESSOR AND OUTDOOR FAN INSTANT OFF
FAN 60 SEC. DELAY OFF
FAN INSTANT ON
COMPRESSOR AND OUTDOOR FAN INSTANT ON (AFTER ANTI-SHORT CYCLE DELAY)
SYSTEM OPERATES IN HEATING
COMPRESSOR AND OUTDOOR FAN INSTANT OFF
FAN 60 SEC. DELAY OFF
FAN INSTANT ON
HEATER BANK 1, 2 & 3 ELEC. HEAT INSTANT ON
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
FAN 10 SEC. DELAY OFF

FAN INSTANT ON
COMPRESSOR AND OUTDOOR FAN INSTANT ON
SYSTEM OPERATES IN HEATING
HEATER BANK 1, 2 & 3 ELEC. HEAT INSTANT ON
HEATER BANK 4, 5 & 6 ELEC. HEAT 10 SEC. DELAY ON
COMPRESSOR AND OUTDOOR FAN INSTANT OFF
HEATER BANK 4, 5 & 6 ELEC. HEAT INSTANT OFF
HEATER BANK 1, 2 & 3 ELEC. HEAT 1/2 SEC. DELAY OFF
FAN 60 SEC. DELAY OFF

FAN INSTANT ON
HEATER BANK 1, 2 & 3 ELEC. HEAT INSTANT ON
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
FAN 10 SEC. DELAY OFF

14 Johnson Controls Unitary Products

341849-YIM-A-0108

MAINTENANCE

NORMAL MAINTENANCE

Prior to any of the following m aintenance pro­cedures, shut off all power to the unit, to avoid
personal injury.

Periodic maintenance consists of changing or cleaning
filters and general cleaning of the outdoor coil.

FILTERS - Inspect once a month. Replace Dis posable
or clean Permanent Type as necessary. DO NOT
replace Permanent Type with Disposable.

MOTORS - Indoor and outdoor fan motors are perma­nently lubricated and require no maintenance.

OUTDOOR COIL - Dirt should not be allowed to accu­mulate on the outdoor coil surf ace or oth er parts in th e
air circuit. Cleaning should be as often as n eces sary t o
keep the coil clean. Use a brush, vacuum cleaner
attachment, or other suitable means. If water is used to
clean the coil, be sure that the power to the unit is shut
off prior to cleaning.

Exercise care when cleaning the coil so that
the coil fins are not damaged.

Do not permit the hot condenser air discharge
to be obstructed by overhangin g structures or
shrubs.

Johnson Controls Unitary Products 15

341849-YIM-A-0108

DETAIL A

COMPR
RELAY

222/Y

M1

M

FOR DEFROST
CONTROL
031-09104-000A
SEE DETAIL A

DEFROST
CONTROL
031-01268-000B

BLU

DS

BLU

DFST
STAT

R

C

FIGURE 5 - Typical Wiring Diagram (230-3-60 Power Supply)

16 Johnson Controls Unitary Products

341849-YIM-A-0108

FIGURE 6 - Typical Wiring Diagram BHA Models (460-3-60 and 575-3-60 Power Supply)

Johnson Controls Unitary Products 17

341849-YIM-A-0108

CB
CCH
COMPR
DS
F1 F2 F3
F4 F5 F6
F7 F8 F9
F24
FS
HP
HTR 1
HTR 2
HTR 3
HTR 4
HTR 5
HTR 6
K1
K2
K3
K7
LP
LS
M1
M2
M3
PTCR
RC1/RC2
RC1
RC2
RC3
RVS
S2/P2
S3/P3
S4/P4
S3/P3
T1
TB2

CIRCUIT BREAKER 24V, 3 AMP
CRANKCASE HEATER (OPTIONAL)
COMPRESSOR
DEFROST SENSOR, CLOSES @ 31°F, OPENS @ 55°F.
FUSES, LINE VOLTAGE - 60 AMP (10, 15, 20 & 25 KW ELEC HEAT)
FUSES, LINE VOLTAGE - 30 AMP (10, 15, 20 & 25 KW ELEC HEAT)
FUSES, LINE VOLTAGE - 30 AMP (20, 25 KW ELEC HEAT)
FUSE 24V SECONDARY, 5 AMP
FREEZESTAT SWITCH (OPTIONAL ACCESSORY) OPEN @ 26° F
HIGH PRESSURE SWITCH (OPTIONAL ACCESSORY) OPENS @ 280 PSIG
ELECTRIC HEATER (OPT. ACCSSRY: ALL KW ELEC HEAT)
ELECTRIC HEATER (OPT. ACCSSRY: 7.5, 10, 15, 20 & 25 KW ELEC HEAT)
ELECTRIC HEATER (OPT. ACCSSRY: 20 & 25 KW ELEC HEAT)
ELECTRIC HEATER (OPT. ACCSSRY: 15, 20 & 25 KW ELEC HEAT)
ELECTRIC HEATER (OPT. ACCSSRY: 20 & 25 KW ELEC HEAT)
ELECTRIC HEATER (OPT. ACCSSRY: 20 & 25 KW ELEC HEAT)
RELAY INDOOR FAN MOTOR
RELAY ELECTRIC HEATER
RELAY ELECTRIC HEATER, 24 VDC COIL
RELAY LIMIT TRIP, 25 VDC COIL
LOW PRESSURE SWITCH (OPTIONAL ACCESSORY) OPEN @ 7 PSIG
LIMIT SWITCH, ELECTRIC HEAT (PART OF ELEC HEAT ACCESSORY)
CONTACTOR, COMPRESSOR & OUTDOOR FAN
CONTACTOR, ELECTRIC HEAT, 230V COIL
CONTACTOR, ELECTRIC HEAT, 230V COIL
START ASSIST (OPTIONAL DEVICE)
COMPRESSOR START & OUTDOOR FAN RUN CAPACITOR
COMPRESSOR START CAPACITOR (ALTERNATE)
OUTDOOR FAN RUN CAPACITOR (ALTERNATE)
INDOOR FAN RUN CAPACITOR
REVERSING VALVE SOLENOID
SOCKET/PLUG CONNECTION ON FAN CONTROL BOARD, LOW VOLTAGE
SOCKET/PLUG CONNECTION ON FAN CONTROL BOARD, LINE VOLTAGE
SOCKET/PLUG CONNECTION ON ID FAN MOTOR, 24V
SOCKET/PLUG CONNECTION ON ID FAN MOTOR, 230V
TRANSFORMER, 24V, 40 VA
TERMINAL BLOCK ECM MOTOR "SPEED" CONNECTIONS
IDENTIFIED TERMINAL ON RUN CAPACITOR
ROOM THERMOSTAT 24V CONNECTIONS
TB1 ON FAN/ELEC HEAT CONTROL BOARD
FACTORY WIRING AND DEVICES
OPTIONAL WIRING AND DEVICES
FIELD WIRING

FIGURE 7 - Typical Wiring Diagram Legend (See Pages 16 and 17)

1. ALL FIELD WIRING TO BE ACCOMPLISHED FOLLOWING CITY,
LOCAL AND/OR NATIONAL CODES IN EFFECT AT TIME OF
INSTALLATION OF THIS UNIT.

2. CAUTION: LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN
SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER
AND DANGEROUS OPERATION. IF ANY OF THE WIRE AS
SUPPLIED WITH THIS UNIT MUST BE REMOVED, IT MUST BE
REPLACED WITH TYPE 105° C, 600V WIRE OR EQUIVALENT
CLEARLY RENUMBERED FOR IDENTIFICATION. VERIFY PROPER
OPERATION AFTER SERVICING.

3. MOTORS ARE INHERENTLY PROTECTED.

4. UNIT FACTORY WIRED FOR 230 VOLT OPERATION. FOR 208
VOLT OPERATION MOVE '108/PR' WIRE FROM 240V TO 208V
ON TRANSFORMER T1.

5. SEE UNIT NAMEPLATE FOR MAXIMUM FUSE SIZE AND MINIMUM
CIRCUIT AMPACITY.

6. SELECT INDOOR BLOWER SPEED TO OBTAIN APPROX 400
CFM/TON IN COOLING.

7. IF OPTIONAL SAFETY SWITCH KIT IS INSTALLED,
WIRE 219/BK IS REMOVED.

8. WIRE 204/BR IS REMOVED WHEN ELECTRIC HEAT
IS INSTALLED.

9. ELECTRIC HEAT ACCESSORY WITH DUAL POINT SUPPLY POWER.
SEE DETAIL A

10. SHUNT CONTACT ALSO USED WITH CRANKCASE HEATER. (OPTIONAL)

FIGURE 8 - Typical Wiring Diagram Notes (See Pages 16 and 17)

18 Johnson Controls Unitary Products

341849-YIM-A-0108

Johnson Controls Unitary Products 19

Subject to change without notice. Printed in U.S.A. 341849-YIM-A-0108
Copyright © 2007 by Johnson Controls, Inc. All rights reserved. Supersedes: 66269-YIM-A-0104/035-16004-002-A-010 4

Johnson Controls Unitary Products

5005 York Drive

Norman, OK 73069