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
278803-YIM-A-1106
TABLE OF CONTENTS
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
COMMERCIAL SPLIT SYSTEM
COOLING UNITS
4 PIPE SYSTEMS
HB 180 & 240
15 thru 20 Nominal Tons



ISO 9001
Certified Quality
Management System 278803-YIM-A-1106
2
Unitary Products Group
TABLE OF CONTENTS
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
NOTES, CAUTIONS, AND WARNINGS . . . . . . . . . . . . . . .4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ROOF-TOP LOCATIONS. . . . . . . . . . . . . . . . . . . . . . . 4
GROUND LEVEL LOCATIONS . . . . . . . . . . . . . . . . . . 4
RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . . . 5
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
COMPRESSOR CRANKCASE HEATER . . . . . . . . . . . . 5
POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . 7
CONTROL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
REFRIGERANT PIPING . . . . . . . . . . . . . . . . . . . . . . . . 11
GENERAL GUIDELINES . . . . . . . . . . . . . . . . . . . . . . 11
LINE SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
EVACUATING AND CHARGING . . . . . . . . . . . . . . . . . 13
ALTERNATE CHARGING METHODS . . . . . . . . . . . . . 13
METHOD 1: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
METHOD 2: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
SIMPLICITY SYSTEM SEQUENCE OF OPERATION FOR
15 & 20 TON, 4-PIPE OUTDOOR SPLIT SYSTEMS . . 14
CONDENSING UNIT Split-System-Cooling-Units-4-Pipe-Systems-Models-/' >MATCHED WITH A SINGLE (TWO
STAGE) INDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . 14
FAN CONTROL SWITCH OPERATION . . . . . . . . . . 14
LOW AMBIENT SWITCH. . . . . . . . . . . . . . . . . . . . . . 14
HIGH PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . 14
PUMP-OUT OPTION . . . . . . . . . . . . . . . . . . . . . . . . . 14
LOW PRESSURE LIMIT SWITCH. . . . . . . . . . . . . . . 14
FLASH CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
UNIT CONTROL BOARD OPTION SETUP . . . . . . . . . 16
OPTION BYTE SETUP . . . . . . . . . . . . . . . . . . . . . . . 16
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
PHASING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CRANKCASE HEATER . . . . . . . . . . . . . . . . . . . . . . . . 16
PRE-START CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . 17
INITIAL START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SAFETY FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SECURE OWNERS APPROVAL . . . . . . . . . . . . . . . . . . .17
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . 18
NOTICE TO OWNER . . . . . . . . . . . . . . . . . . . . . . . . . . 18
LIST OF FIGURES
Fig. #
Pg. #
1 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . . 3
2 CORNER WEIGHT AND CENTER OF GRAVITY . . . . . 5
3 TYPICAL RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 TYPICAL LOW VOLTAGE WIRING DIAGRAM . . . . . . . 7
5 UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 PIPING AND ELECTRICAL CONNECTION
LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 UNIT CONTROL BOARD . . . . . . . . . . . . . . . . . . . . . . . 16
8 CHARGING CURVE FOR HB180 . . . . . . . . . . . . . . . . 18
9 CHARGING CURVE FOR HB240 . . . . . . . . . . . . . . . . 19
10 TYPICAL WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . 20
LIST OF TABLES
Tbl. #
Pg. #
1 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . 4
2 HB CORNER WEIGHTS AND CENTER OF GRAVITY . 5
3 OUTDOOR UNIT PHYSICAL DATA . . . . . . . . . . . . . . . 6
4 ELECTRICAL DATA COMPRESSORS . . . . . . . . . . . . . 8
5 ELECTRICAL DATA FAN MOTORS . . . . . . . . . . . . . . . 8
6 ELECTRICAL DATA, MINIMUMS AND MAXIMUMS. . . 8
7 CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 UNIT CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
9 PIPING AND ELECTRICAL CONNECTION SIZES . . . 10
10 REFRIGERANT LINE CHARGE. . . . . . . . . . . . . . . . . . 11
11 SUCTION LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
12 LIQUID LINES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
13 UNIT CONTROL BOARD FLASH CODES . . . . . . . . . 15 278803-YIM-A-1106
Unitary Products Group
3
GENERAL
The outdoor units are completely piped and wired at the factory
and are shipped ready for immediate installation. Only the inter-
connecting liquid and suction lines, control wiring, and the main
power wiring are required to complete the installation. Every
unit is dehydrated, evacuated, leak tested and pressure tested
at 450 psig before being pressurized with a holding charge of
refrigerant-22 for shipment and/or storage.
To eliminate the costly cabinet deterioration problems usually
associated with outdoor equipment, all sheet metal parts are
constructed of commercial grade (G90) galvanized steel. After
fabrication, each part is thoroughly cleaned to remove any
grease or dirt from its surfaces. The majority of parts that will be
exposed to the weather are then coated with a desert sand
powder paint to assure a quality finish for many years. This
coating system has passed the 1000 hour, salt spray test per
ASTM Standard B117.
Every unit includes 2 heavy-duty scroll compressors, 2 outdoor
fan motors with inherent protection, and copper tube/aluminum
fin coil.
All controls are located in the front of the unit and are readily
accessible for maintenance, adjustment and service. All wiring
(Power and Control) can be made through the front of the unit.
REFERENCE
This instruction covers the installation and Split-System-Cooling-Units-4-Pipe-Systems-Models-/' target='blank' class='doin' >operation of the
basic condensing unit. For information on the installation and
Split-System-Cooling-Units-4-Pipe-Systems-Models-/' target='blank' class='doin' >operation of the matching indoor units, refer to instruction
Part Number 035-18494-001.
All accessories come with a Split-System-Cooling-Units-4-Pipe-Systems-Models-/' target='blank' class='doin' >separate Installation Manual.
Refer to Parts Manual for complete listing of replacement parts
on this equipment.
FIGURE 1: PRODUCT NOMENCLATURE
PRODUCT NOMENCLATURE
OUTDOOR SPLIT CONDENSING UNITS AND HEAT PUMPS
H A 120 C 00 A 2 A AA 1 A
Model
#
Model Number
Description
Options
H
Product Category
H = Air Conditioner Split System E = Heat Pump Split System
A
Product Identifier
A = R-22 Standard Efficiency 2-Pipe
B = R-22 Standard Efficiency 4-Pipe
120 Nominal Cooling
Capacity
MBH
090 = 7-1/2 Ton
120=10 Ton
150 = 12-1/2 Ton
180 = 15 Ton
240 = 20 Ton
300 = 25 Ton *
360 = 30 Ton *
480 = 40 Ton *
600 = 50 Ton *
C
Heat Type
C = Cooling Only
00
Nominal Heating
Capacity
00 = No Heat Installed
A
Airflow Options
A = Standard Motor
2
Voltage
2= 208/230-3-60
4= 460-3-60

5= 575-3-60
A
Installation Options
A = None
B = Disconnect
AA Additional Options
AA = None
AC = Technicoated Coil


1
Product Generation
1 = 1
st
Generation
2 = 2
nd
Generation

A
Product Style
A = Style A
B = Style B
* NOT AVAILABLE IN HEAT PUMP. 278803-YIM-A-1106
4
Unitary Products Group
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 Split-System-Cooling-Units-4-Pipe-Systems-Models-/' target='blank' class='doin' >separate
request for inspection by the carrier's agent should be made in
writing.
NOTES, CAUTIONS, AND WARNINGS
Installer should pay particular attention to the words: NOTE,
CAUTION and WARNING. Notes are intended to clarify or
make installation easier. Cautions are given to prevent equip-
ment damage. Warnings are given to alert installer that per-
sonal injury and/or equipment damage my result if installation
procedure is not handled properly.
INSTALLATION
LIMITATIONS
These units must be installed in accordance with all national
and local safety codes. If no local codes apply, installation must
conform with the appropriate national codes. See Table 1 for
unit application