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INSTALLATION
MANUAL
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . .3
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . .3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . .13
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
AFFINITY™ SERIES
SINGLE PACKAGE HEAT PUMPS
MODEL: B1HA036 thru 060
3 thru 5 Ton
(10 SEER)
See the following page for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to clarify or make the installation easier.
Cautions are given to prevent equipment damage.
Warnings are given to alert installer that personal 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
ISO 9001
Certified Quality
Management System
341849-YIM-A-0108
341849-YIM-A-0108
TABLE OF CONTENTS
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
Pg. #
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
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:
• 341849 - General Installation
• 035-16605-003 - Electric Heater Accessory
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.
PRODUCT NOMENCLATURE
PRODUCT CATEGORY
B = Single Package Heat Pumps
(Air Cooled)
PRODUCT GENERATION
1 = NEW or Current Design
PRODUCT NOMENCLATURE
B 1 H A 0 3 6 A 2 5
PRODUCT IDENTIFIER
HA = Heat Pump (10 SEER)
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 editions).
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 to 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.
1
208/230 V
2
460 V
575 V
Wet Bulb Temperature ( ° F) of Air on
Evaporator Coil, Min./Max.
Dry Bulb Temperature ( ° F) of Air on
Condenser Coil, Min.
3
/Max.
187/253
414/504
518/630
57/72
45/120
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.
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 will 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.
RIGGING AND HANDLING
Care must be exercised when moving the unit. Do not remove any packaging until the unit is near the place 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
Size
036
042
048
060
Shipping
Weight
(lbs.)
367
394
445
490
Operating
Weight
(lbs.)
362
389
440
485
Dimensions
“A” “B” “C” “D”
100
107
121
133
96
103
117
129
84
90
102
112
87
93
105
116
“D”
FRONT
OF
UNIT
“A”
CENTER OF GRAVITY
“C”
“B”
49 1/8
25
22 49 1/4
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.
4 Johnson Controls Unitary Products
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”-shaped 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.
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 and 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.
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 location 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 ther-
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
341849-YIM-A-0108
COMPRESSORS
Units are shipped with compressor mountings factoryadjusted for shipping.
Loosen compressor bolts half turn before operating unit.
CONTROL WIRING
THERMOSTAT
** = Minimum wire size of 18 AWG wire should be used for all field installed 24 volt wire.
**
UNIT TERMINAL STRIP
NOTE:
HEAT ANTICIPATOR
SHOULD BE SET AT 0.25
AMPS FOR ALL MODELS.
*
24 VOLT TRANSFORMER
PROGRAMMABLE
THERMOSTAT ONLY
* = 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
Indoor
Blower
Indoor
Coil
Outdoor
Fan
Outdoor
Coil
Charge
Filter
Compressor
Models
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.)
Refrigerant 22 (Lbs./oz.)
Face Area (Sq. Ft./qty./size)
Hermetic Type, (Qty. = 1)
1/4
2,400
1
20
11.7
5/5
036
10 x 8
3/4
3
15
4.38
22
Scroll
BHA
042
11 x 10
3/4
3
15
4.38
22
1/4
2,400
1
20
1/4
2,800
1
16
11.7
6/0
16.4
9/0
4.28/2/14" x 22"
Recip.
Scroll
048
11 x 10
3/4
3
16
5.62
22
060
11 x 10
1
3
16
5.62
22
1/4
2,800
1
20
16.4
10/0
Scroll
6 Johnson Controls Unitary Products
341849-YIM-A-0108
TABLE 4: Electrical Data (Heat Pump / Electric Heat)
Size
036
042
048
060
036
042
048
060
036
042
048
060
Volt
208/230-3-60
208/230-3-60
208/230-3-60
208/230-3-60
460-3-60
460-3-60
460-3-60
460-3-60
575-3-60
575-3-60
575-3-60
575-3-60
Compressors
(each)
RLA LRA
OD Fan
Motors
(each)
FLA
10.9
78.0
12.8
88.0
14.1
105.0
16.0
125.0
5.8
5.8
7.1
8.0
4.5
5.8
5.6
6.4
40.0
42.0
55.0
67.0
32.0
44.0
44.0
50.0
1.1
1.1
1.5
1.5
0.6
0.6
0.8
0.8
0.4
0.4
0.6
0.6
Supply
Blower
Motor
FLA
3.5
3.5
4.0
7.0
1.8
1.8
2.0
3.5
1.5
1.5
1.6
2.8
Model
2NH04501025
2NH04501525
2NH04501025
2NH04501525
2NP04501025
2NP04501525
2NP04502025
2NH04502525
2NH04501025
2NH04501525
2NH04502025
2NH04502525
2NH04501046
2NH04501546
2NH04501046
2NH04501546
2NP04501046
2NH04501546
2NH04502046
2NH04502546
2NH04501046
2NH04501546
2NP04502046
2NP04502546
2NH04501058
2NH04501558
2NH04501058
2NH04501558
2NH04501058
2NH04501558
2NH04502058
2NH04502558
2NH04501058
2NH04501558
2NP04502058
2NP04502558
Electric Heat Option
1
1
1
1
1
2
2
2
1
1
2
1
1
1
1
2
1
1
2
1
2
2
1
1
2
2
2
1
1
2
1
Stages
1
1
1
1
1
10.0
5
10.0
4
kW
7.5/10.0
3
24.1
30.1
9.6
14.4
9.6
14.4
9.6
12.0
18.0
12.0
18.0
24.1
30.1
12.0
18.0
MCA
(Amps)
Amps
20.8/24.1
31.3/36.1
20.8/24.1
31.3/36.1
20.8/24.1
44.3/48.3
57.3/63.3
46.9/50.7
59.7/65.7
49.2/53.2
31.3/36.1
41.7/48.1
52.1/60.1
20.8/24.1
31.3/36.1
62.2/68.2
75.3/83.3
88.3/98.3
54.6/58.6
67.6/73.6
41.7/48.1
80.7/88.7
52.1/60.1
93.7/103.7
12.8
18.0
24.6
32.2
14.4
19.2
24.1
9.6
14.4
19.2
24.1
27.3
33.3
39.3
23.4
29.5
35.5
41.5
44.4
51.9
19.6
25.6
21.1
27.2
21.3
24.7
32.2
26.7
34.2
41.7
49.3
29.4
36.9
Max Fuse/
Breaker Size
1
(Amps)
Max HACR
2
Breaker Size
45
60
20
30
25
30
25
25
35
30
35
45
50
30
40
30
35
40
25
30
40
45
45/50
60/70
50/60
60/70
50/60
70/70
80/90
90/100
60/60
70/80
90/90
100/110
25
35
45
60
20
30
25
30
25
25
35
30
35
45
50
30
40
30
35
40
25
30
40
45
45/50
60/70
50/60
60/70
50/60
70/70
80/90
90/100
60/60
70/80
90/90
100/110
25
35
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.
TABLE 5: Electrical Data (Basic Unit)
Size
036
042
048
060
036
042
048
060
036
042
048
060
Volt
208/230-3-60
208/230-3-60
208/230-3-60
208/230-3-60
460-3-60
460-3-60
460-3-60
460-3-60
575-3-60
575-3-60
575-3-60
575-3-60
Voltage
Limitations
1
Compressors
(each)
414
414
518
518
518
518
Min.
Max.
RLA LRA
187
187
253
253
10.9
12.8
78.0
88.0
187
187
414
414
253
253
504
504
14.1
105.0
16.0
125.0
5.8
5.8
40.0
42.0
504
504
630
630
630
630
7.1
8.0
4.5
5.8
5.6
6.4
55.0
67.0
32.0
44.0
44.0
50.0
0.4
0.4
0.6
0.6
0.6
0.6
0.8
0.8
OD Fan
Motors
(each)
FLA
1.1
1.1
1.5
1.5
1.5
1.5
1.6
2.8
1.8
1.8
2.0
3.5
Supply
Blower
Motor
FLA
3.5
3.5
4.0
7.0
1. Rated in accordance with ARI Standard 110, utilization range “A”.
2. Dual element, time delay type.
MCA
(Amps)
18.2
20.6
23.1
28.5
9.6
9.7
11.7
14.3
7.6
9.1
9.3
11.4
Max Fuse
Size
2
(Amps)
15
15
15
20
25
25
30
40
15
15
15
15
Max HACR
Breaker Size
Unit Power
Factor
15
15
15
20
25
25
30
40
15
15
15
15
.96
.96
.96
.96
.96
.96
.96
.96
.96
.96
.96
.96
Transformer
Size (VA)
75
75
75
75
75
75
75
75
75
75
75
75
Johnson Controls Unitary Products 7
341849-YIM-A-0108
Electric Heat
Correction
Factors
Nominal Voltage
240
480
600
Voltage
208
230
460
575 kW. Capacity
Multiplier
.75
.92
.92
.92
TABLE 6: Side & Bottom Supply Air Blower Performance 230/460/575 Volts
Size
036
042
048
036
Blower
Speed
High
Medium
Low
High
Medium
Low
0.1
0.2
0.3
0.4
External Static Pressure (Inch Water Gauge)
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
-
-
-
-
-
-
-
-
1472
-
647
1414 617 1317
1394 626 1297 495 1199
688
465
1219
1102
660
435
1462 526 1400 506 1337 486 1275 467 1167 440 1100 414 1012 387
1116 533 1013
985
-
397
-
-
-
507
-
-
910
-
-
480
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1697 740 1580
1673 830 1566 594 1439
706
558
1463
1322
672
522
1339 640 1216
1182 476
1680 607 1608 584 1630 660 1425 528 1320 496 1214 464 1050 420 -
-
608
-
-
1092
-
-
576
-
-
-
-
-
-
-
High 1947 882 1867 857 1786 832 1706 807 1637 782 1569 757 1500 732
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
Medium
Low
-
-
-
2499 1290 2391 1233 2283 1177 2175 1120 2067 1080 1958 1040 1850 1000
2454 1163 2387 1117 2320 1070 2229 1023 2137 977 2046 930 1950 887 1854 843 1758 800
2242 1090 2201 1053 2161 1017 2120 980 2041 927 1962 873 1883 820 1797 787 1711 753 1625 720
-
-
-
-
-
-
-
-
-
-
-
-
TABLE 7: Side & Bottom Supply Air Blower Performance 208 Volts
Size
036
042
048
036
Blower
Speed
External Static Pressure (Inch Water Gauge)
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
1440 608 1381 571 1273 656 1185 530 1097 604 1004 480 912 456 High
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
-
-
-
-
-
-
-
-
-
-
-
-
Medium
Low
High
1674 614 1590 590 1506 567 1400 636 1296 602 1190 470 1063 428
1679 867 1612 646 1449 526 1377 504 1282 476 1188 447 1093 418 -
-
-
-
-
-
-
-
-
-
1982 870 1939 850 1897 830 1813 800 1728 770 1644 740 1559 707 1474 673 1389 640
-
-
-
-
-
-
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
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
-
-
-
-
-
-
-
-
-
-
TABLE 8: Additional Static Pressure Resistance
1
,
2
Description
Wet Indoor Coil
Economizer
Filter/Frame Kit
Electric Heat
Resistance, IWG
CFM
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000
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
0.00
0.01
0.02
0.00
0.02
0.03
0.00
0.02
0.03
0.01
0.02
0.03
0.01
0.02
0.04
0.01
0.02
0.04
0.01
0.03
0.05
0.02
0.03
0.06
0.03
0.03
0.07
0.04
0.03
0.08
0.05
0.04
0.09
0.06
0.05
0.10
0.07
0.05
0.01
0.07
0.06
0.11
0.08
0.06
0.11
0.08
0.07
0.12
1. Deduct these resistance values from the available external static pressures shown in the respective Blower Performance 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
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 manometer, 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.
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
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.
B1HA Coil Delta
B1HA036 B1HA048-60
B1HA042
Linear B1HA036
Linear B1HA042
Linear B1HA048-60
Airflow (CFM)
FIGURE 3 - Coil Delta P vs. Supply Air 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
70
75
80
85
90
95
100
105
110
115
55
7.0
5.6
-
-
12.8
11.4
9.9
8.5
-
-
-
57
8.9
7.1
5.3
-
16.1
14.3
12.5
10.7
-
-
-
59
19.3
17.2
15.0
12.9
10.8
8.6
6.5
5.1
-
-
-
61
22.5
20.1
17.6
15.1
12.6
10.1
7.7
6.0
-
-
-
Indoor WB Temperature, °F
63 65 67
25.8
22.9
20.1
17.3
14.5
11.7
8.8
6.9
-
-
-
29.0
25.8
22.7
19.5
16.3
13.2
10.0
7.8
5.6
-
-
32.2
28.7
25.2
21.7
18.2
14.7
11.2
8.7
6.2
-
-
69
35.0
31.6
28.2
24.8
21.4
18.0
14.6
11.7
8.7
5.8
-
71
37.7
34.4
31.1
27.9
24.6
21.3
18.1
14.7
11.3
7.9
-
TABLE 10: Heating Superheat at Compressor Suction, Airflow = 1,200 CFM (B1HA036)
Indoor DB
Temperature
°F
55
70
80
-10
9.7
-
-
0
10.1
-
-
Heating Superheat at Compressor Suction, °F
10 20 30 40
10.7
-
-
11.8
-
-
13.7
4.6
-
17.0
7.8
-
50
22.6
13.4
7.3
60
32.2
23.0
16.9
TABLE 11: Cooling Superheat at Compressor Suction, Airflow = 1,400 CFM (B1HA042)
Outdoor
Temperature
°F
65
70
75
80
85
90
95
100
105
110
115
55
34.0
31.1
28.3
25.4
22.6
19.7
16.9
14.5
12.2
9.9
7.6
57
34.2
31.5
28.8
26.1
23.5
20.8
18.1
15.6
13.1
10.5
8.0
59
34.4
31.9
29.4
26.9
24.4
21.9
19.4
16.6
13.9
11.1
8.4
61
34.6
32.2
29.9
27.6
25.3
23.0
20.6
17.7
14.7
11.7
8.8
Indoor WB Temperature, °F
63 65 67
34.8
32.6
30.5
28.3
26.2
24.0
21.9
18.7
15.5
12.3
9.1
35.0
33.0
31.0
29.1
27.1
25.1
23.2
19.7
16.3
12.9
9.5
35.2
33.4
31.6
29.8
28.0
26.2
24.4
20.8
17.1
13.5
9.9
69
36.2
34.8
33.4
32.0
30.6
29.2
27.8
24.4
20.9
17.4
14.0
71
37.3
36.3
35.3
34.3
33.2
32.2
31.2
27.9
24.6
21.3
18.1
TABLE 12: Heating Superheat at Compressor Suction, Airflow = 1,400 CFM (B1HA042)
Indoor DB
Temperature
°F
55
70
80
-10
5.1
-
-
0
5.5
-
-
10
6.2
-
-
Outdoor Temperature, °F
20
7.4
-
-
30
9.6
5.0
-
40
13.5
8.9
5.4
50
20.3
15.7
12.2
60
32.4
27.8
24.3
73
40.4
37.3
34.1
31.0
27.8
24.7
21.5
17.7
13.9
10.0
6.2
75
43.1
40.1
37.1
34.0
31.0
28.0
25.0
20.7
16.4
12.2
7.9
73
38.4
37.7
37.1
36.5
35.9
35.2
34.6
31.5
28.4
25.3
22.1
75
39.4
39.2
39.0
38.7
38.5
38.3
38.0
35.1
32.1
29.2
26.2
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
70
75
80
85
90
95
100
105
110
115
55
7.2
6.5
5.9
-
11.4
10.3
9.3
8.2
-
-
-
57
7.7
7.0
6.3
5.5
12.4
11.2
10.0
8.8
-
-
-
59
8.1
7.4
6.8
6.1
13.5
12.2
10.8
9.4
5.4
-
-
61
8.5
7.9
7.2
6.6
14.6
13.1
11.6
10.0
6.1
5.5
-
Indoor WB Temperature, °F
63
9.0
8.3
7.7
7.2
15.7
14.0
12.3
10.6
6.8
6.3
5.9
65
9.4
8.8
8.1
7.8
16.8
14.9
13.1
11.2
7.5
7.2
6.9
67
9.8
9.2
8.6
8.4
17.9
15.9
13.9
11.8
8.2
8.0
7.8
69
19.3
17.4
15.4
13.5
11.6
10.6
9.6
9.3
9.1
8.9
8.7
71
20.7
18.9
17.0
15.2
13.4
12.0
10.6
10.3
10.1
9.8
9.5
TABLE 14: Heating Superheat at Compressor Suction, Airflow = 1,600 CFM (B1HA048)
Indoor DB
Temperature
°F
55
70
80
-10
8.3
-
-
0
8.4
-
-
Heating Superheat at Compressor Suction, °F
10 20 30 40
8.6
-
-
9.0
-
-
10.1
-
-
12.4
4.2
-
50
17.4
9.2
5.7
60
28.6
20.4
16.9
TABLE 15: Cooling Superheat at Compressor Suction, Airflow = 2,000 CFM (B1HA060)
Outdoor
Temperature
°F
65
70
75
80
85
90
95
100
105
110
115
55
7.3
7.2
7.0
7.2
26.7
21.9
17.0
12.2
7.4
7.6
7.8
57
9.1
8.3
7.5
7.6
27.6
23.0
18.3
13.7
7.7
7.8
7.8
59
28.5
24.1
19.7
15.3
10.8
9.4
8.0
8.0
7.9
7.9
7.9
61
29.4
25.2
21.0
16.8
12.6
10.6
8.5
8.3
8.2
8.1
7.9
Indoor WB Temperature, °F
63 65 67
30.3
26.3
22.3
18.4
14.4
11.7
9.0
8.7
8.5
8.2
8.0
31.2
27.4
23.7
19.9
16.2
12.8
9.5
9.1
8.7
8.4
8.0
32.1
28.5
25.0
21.5
17.9
13.9
9.9
9.5
9.0
8.5
8.1
69
33.0
30.0
27.0
24.0
20.9
17.3
13.6
12.4
11.2
10.0
8.8
71
33.9
31.4
28.9
26.5
24.0
20.6
17.2
15.3
13.4
11.5
9.6
TABLE 16: Heating Superheat at Compressor Suction, Airflow = 2,000 CFM (B1HA060)
Indoor DB
Temperature
°F
55
70
80
-10
5.5
-
-
0
5.7
-
-
10
6.2
-
-
Outdoor Temperature, °F
20 30
6.8
-
-
8.0
-
-
40
9.9
4.8
-
50
13.1
8.0
5.6
60
18.6
13.4
11.0
73
22.1
20.4
18.6
16.9
15.1
13.4
11.6
11.3
11.0
10.7
10.4
75
23.5
21.9
20.2
18.5
16.9
14.8
12.6
12.3
11.9
11.6
11.2
73
34.8
32.8
30.9
29.0
27.0
23.9
20.8
18.2
15.6
13.0
10.3
75
35.7
34.3
32.9
31.4
30.0
27.2
24.4
21.1
17.8
14.4
11.1
Johnson Controls Unitary Products 11
HIGH VOLTAGE CONN.
" DIA. KNOCKOUT
HIGH VOLTAGE CONN.
" DIA. KNOCKOUT
LOW VOLTAGE CONN.
" DIA. KNOCKOUT
SIDE SUPPLY
AIR OPENING
SIDE RETURN
AIR OPENING
49
(OVERALL)
LOW VOLTAGE
CONN.
" DIA. KNOCK-
341849-YIM-A-0108
FRONT
2
“A”
COMPRESSOR
SERVICE ACCESS
COMPARTMENT PANEL
(OVERALL)
UNIT SIZE
DIMENSION
“A”
036 - 042
048 - 060
33
41
(OVERALL)
REFRIGERANT
CONNECTIONS
ELECTRICAL/FILTER
SERVICE ACCESS
COMPARTMENT PANEL
HIGH VOLTAGE CONN.
" DIA. KNOCKOUT
2
FRONT
4
1
HIGH VOLTAGE
CONN.
" x " DIA.
KNOCKOUT
UNIT CONDENSATE
CONNECTION " NPTI
(TRAP REQUIRED)
All dimensions are in inches. They are subject to change without notice. Certified dimensions will be provided upon request.
SIDE SUPPLY
AIR OPENING
6
OUTDOOR
COIL
CONDENSATE
DRAIN " NPTI
BOTTOM SUPPLY
AIR OPENING
Front
Back
CLEARANCES
(Minimum)
12"
0"
Left Side (Filter Access) 24"
Right Side 24"
Below Unit 1
Above Unit 2
0"
36"
(For Condenser Air Discharge)
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.
FIGURE 4 - Dimensions and Clearances
1
15
15
BACK
SIDE RETURN
AIR OPENING
2
1
1
15
4
BOTTOM RETURN
AIR OPENING
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 motor, and the reversing valve will switch to the cooling position. If the fan switch on the thermostat is on the ”AUTO" position, 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 expired, 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;
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.
3.
Shorting the “TEST” pins together for more than 2 seconds.
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 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.
TABLE 17: Thermostat Signals (Three Phase Units)
SIGNAL
“G”
“G” & “Y” & “O”
“G” & “Y”
“G” & “W”
“G” & “Y” & “W”
“W”
STATE
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
BOARD FUNCTION
FAN INSTANT ON
FAN INSTANT OFF
FAN INSTANT ON
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 maintenance 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 Disposable 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 surface or other parts in the air circuit. Cleaning should be as often as necessary to 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 overhanging structures or shrubs.
Johnson Controls Unitary Products 15
341849-YIM-A-0108
M1
DETAIL A
222/Y
M
COMPR
RELAY
DS
BLU
R
DFST
STAT
BLU
C
FOR DEFROST
CONTROL
031-09104-000A
SEE DETAIL A
DEFROST
CONTROL
031-01268-000B
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
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)
LOCAL AND/OR NATIONAL CODES IN EFFECT AT TIME OF
2. CAUTION: LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN
3. MOTORS ARE INHERENTLY PROTECTED.
4. UNIT FACTORY WIRED FOR 230 VOLT OPERATION. FOR 208
5. SEE UNIT NAMEPLATE FOR MAXIMUM FUSE SIZE AND MINIMUM
6. SELECT INDOOR BLOWER SPEED TO OBTAIN APPROX 400
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)
341849-YIM-A-0108
18 Johnson Controls Unitary Products
341849-YIM-A-0108
Johnson Controls Unitary Products 19
Subject to change without notice. Printed in U.S.A.
Copyright © 2007 by Johnson Controls, Inc. All rights reserved.
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
341849-YIM-A-0108
Supersedes: 66269-YIM-A-0104/035-16004-002-A-0104
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