York DM120, DM150, DM090 User Manual
INSTALLATION
MANUAL - 50 Hz
®
SINGLE PACKAGE AIR CONDITIONERS AND
SINGLE PACKAGE GAS/ELECTRIC UNITS
CONTENTS
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . 5
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RENEWAL PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . 45
START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . 45
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . 50
See the following pages for a complete Table of Contents.
DM090, 120 AND 150
7-1/2, 10 AND 12-1/2 TON
(9.0 TO 10.0 EER) 50 Hz
NOTES, CAUTIONS AND WARNINGS
The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions
to prevent equipment damage. Warnings
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
are given
are given to alert
127408-YIM-B-0606
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . 5
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
REFERENCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION SAFETY INFORMATION . . . . . . . . . . . .8
PRECEDING INSTALLATION . . . . . . . . . . . . . . . . . . . . . . 8
LIMITATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . . . .10
CLEARANCES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
DUCT COVERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . .15
COMPRESSORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
THERMOSTAT WIRING . . . . . . . . . . . . . . . . . . . . . . . . .16
POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . .16
POWER WIRING DETAIL . . . . . . . . . . . . . . . . . . . . . . . .16
OPTIONAL ELECTRIC HEAT . . . . . . . . . . . . . . . . . . . . .21
OPTIONAL GAS HEAT . . . . . . . . . . . . . . . . . . . . . . . . . .21
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
GAS CONNECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
LP UNITS, TANKS AND PIPING . . . . . . . . . . . . . . . . . . . . . . .23
VENT AND COMBUSTION AIR. . . . . . . . . . . . . . . . . . . . . . . .23
OPTIONS/ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . .23
ELECTRIC HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
MOTORIZED OUTDOOR DAMPER . . . . . . . . . . . . . . . . . . . . 23
ECONOMIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
POWER EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
ECONOMIZER AND POWER EXHAUST
SET POINT ADJUSTMENTS AND INFORMATION . . . . 24
MINIMUM POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . .24
ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . . . . . . . . 24
POWER EXHAUST DAMPER SET POINT
(WITH OR WITHOUT POWER EXHAUST) . . . . . . . . . . . . . . .24
INDOOR AIR QUALITY AQ . . . . . . . . . . . . . . . . . . . . . . . . . . .24
PHASING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
BLOWER ROTATION . . . . . . . . . . . . . . . . . . . . . . . . . . .26
BELT TENSION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
AIR BALANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CHECKING AIR QUANTITY . . . . . . . . . . . . . . . . . . . . . .34
METHOD ONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
METHOD TWO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
SUPPLY AIR DRIVE ADJUSTMENT. . . . . . . . . . . . . . . .36
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
SEQUENCE OF OPERATIONS OVERVIEW . . . . . . . . .40
COOLING SEQUENCE OF OPERATION. . . . . . . . . . . .40
CONTINUOUS BLOWER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
INTERMITTENT BLOWER. . . . . . . . . . . . . . . . . . . . . . . . . . . .40
NO OUTDOOR AIR OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . .40
ECONOMIZER WITH SINGLE ENTHALPY SENSOR. . . . . . . 40
ECONOMIZER WITH DUAL ENTHALPY SENSORS . . . . . . . 40
127408-YIM-B-0606
ECONOMIZER WITH POWER EXHAUST. . . . . . . . . . . . . . . .41
MOTORIZED OUTDOOR AIR DAMPERS . . . . . . . . . . . . . . . .41
COOLING OPERATION ERRORS. . . . . . . . . . . . . . . . . . . . . .41
HIGH-PRESSURE LIMIT SWITCH. . . . . . . . . . . . . . . . . . . . . .41
LOW-PRESSURE LIMIT SWITCH . . . . . . . . . . . . . . . . . . . . . .41
FREEZESTAT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
LOW AMBIENT COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
COMPRESSOR PROTECTION . . . . . . . . . . . . . . . . . . . 42
FLASH CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
ELECTRIC HEATING SEQUENCE OF OPERATIONS . 42
ELECTRIC HEAT OPERATION ERRORS . . . . . . . . . . . 42
TEMPERATURE LIMIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
LIMIT SWITCH (LS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
FLASH CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
ELECTRIC HEAT ANTICIPATOR SETPOINTS . . . . . . . 42
GAS HEATING SEQUENCE OF OPERATIONS . . . . . . 43
IGNITION CONTROL BOARD . . . . . . . . . . . . . . . . . . . . 43
FIRST STAGE OF HEATING . . . . . . . . . . . . . . . . . . . . . . . . . .43
SECOND STAGE OF HEATING. . . . . . . . . . . . . . . . . . . . . . . .43
RETRY OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
RECYCLE OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
GAS HEATING OPERATION ERRORS . . . . . . . . . . . . . 43
LOCK-OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
TEMPERATURE LIMIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
FLAME SENSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
GAS VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
LIMIT SWITCH (LS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
AUXILIARY LIMIT SWITCH (ALS) . . . . . . . . . . . . . . . . . . . . . .44
PRESSURE SWITCH (PS). . . . . . . . . . . . . . . . . . . . . . . . . . . .44
ROLLOUT SWITCH (ROS). . . . . . . . . . . . . . . . . . . . . . . . . . . .44
INTERNAL MICROPROCESSOR FAILURE . . . . . . . . . . . . . .44
FLASH CODES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
RESETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
GAS HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . 44
START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . 45
PRESTART CHECK LIST. . . . . . . . . . . . . . . . . . . . . . . . 45
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . 45
POST START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . 45
START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . 45
PRE-START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . 45
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . 45
LIGHTING THE MAIN BURNERS. . . . . . . . . . . . . . . . . . . . . . .45
POST START CHECKLIST. . . . . . . . . . . . . . . . . . . . . . . 45
SHUT DOWN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
MANIFOLD GAS PRESSURE ADJUSTMENT . . . . . . . . 46
CHECKING GAS INPUT. . . . . . . . . . . . . . . . . . . . . . . . . 46
NATURAL GAS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
ADJUSTMENT OF TEMPERATURE RISE. . . . . . . . . . . 47
BURNERS/ORIFICES INSPECTION/SERVICING . . . . . 47
CHARGING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . 48
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 50
PREDATOR® FLASH CODES . . . . . . . . . . . . . . . . . . . . 50
COOLING TROUBLESHOOTING GUIDE. . . . . . . . . . . . 54
GAS HEAT TROUBLESHOOTING GUIDE. . . . . . . . . . . 57
2 Unitary Products Group
127408-YIM-B-0606
LIST OF FIGURES
Fig. # Pg. #
1 UNIT SHIPPING BRACKET . . . . . . . . . . . . . . . . . . . . . 8
2 CONDENSER COVERING . . . . . . . . . . . . . . . . . . . . . . 8
3 COMPRESSOR SECTION . . . . . . . . . . . . . . . . . . . . . . 8
4 PREDATOR® COMPONENT LOCATION . . . . . . . . . . 9
5 UNIT 4 POINT LOAD . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 UNIT 6 POINT LOAD . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . 11
8 UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9 BOTTOM DUCT OPENINGS (FROM ABOVE). . . . . . 13
10 REAR DUCT DIMENSIONS . . . . . . . . . . . . . . . . . . . . 13
11 PREDATOR® ROOF CURB DIMENSIONS . . . . . . . . 14
12 SUNLINE™ TO PREDATOR® TRANSITION
ROOF CURBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
13 SIDE PANELS WITH HOLE PLUGS. . . . . . . . . . . . . . 15
14 RETURN DOWNFLOW PLENUM WITH PANEL . . . . 15
15 DISCHARGE PANEL IN PLACE. . . . . . . . . . . . . . . . . 15
16 CONDENSATE DRAIN. . . . . . . . . . . . . . . . . . . . . . . . 15
17 ELECTRONIC THERMOSTAT FIELD WIRING . . . . . 17
Fig. #
18 FIELD WIRING 24 VOLT THERMOSTAT . . . . . . . . . 17
19 FIELD WIRING DISCONNECT - COOLING UNIT
WITH OR WITHOUT ELECTRIC HEAT. . . . . . . . . . . 18
20 FIELD WIRING DISCONNECT - COOLING UNIT
WITH GAS HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
21 SIDE ENTRY GAS PIPING. . . . . . . . . . . . . . . . . . . . . 21
22 BOTTOM ENTRY GAS PIPING . . . . . . . . . . . . . . . . . 21
23 ENTHALPY SET POINT CHART . . . . . . . . . . . . . . . . 25
24 HONEYWELL ECONOMIZER CONTROL W7212. . . 25
25 BELT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 26
26 DRY COIL DELTA P 50" CABINET . . . . . . . . . . . . . . 35
27 DRY COIL DELTA P 42" CABINET . . . . . . . . . . . . . . 35
28 TYPICAL FLAME . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
29 TYPICAL GAS VALVE . . . . . . . . . . . . . . . . . . . . . . . . 48
30 UNIT CONTROL BOARD. . . . . . . . . . . . . . . . . . . . . . 51
31 BASIC TROUBLESHOOTING FLOWCHART . . . . . . 52
32 POWER ON FLOW CHART. . . . . . . . . . . . . . . . . . . . 52
33 TRIP FAILURE FLOW CHART. . . . . . . . . . . . . . . . . . 53
Pg. #
Unitary Products Group 3
LIST OF TABLES
127408-YIM-B-0606
Tbl. # Pg. #
1 UNIT VOLTAGE LIMITATIONS . . . . . . . . . . . . . . . . . .10
2 UNIT TEMPERATURE LIMITATIONS. . . . . . . . . . . . .10
3 UNIT WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4 4 POINT LOAD WEIGHT. . . . . . . . . . . . . . . . . . . . . . .11
5 6 POINT LOAD WEIGHT. . . . . . . . . . . . . . . . . . . . . . .11
6 UNIT HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
7 UNIT CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 REAR DUCT DIMENSIONS. . . . . . . . . . . . . . . . . . . . . 13
9 CONTROL WIRE SIZES . . . . . . . . . . . . . . . . . . . . . . .16
10 ELECTRICAL DATA 7-1/2 TON. . . . . . . . . . . . . . . . . .19
11 ELECTRICAL DATA 10 TON. . . . . . . . . . . . . . . . . . . .19
12 ELECTRICAL DATA 12-1/2 TON. . . . . . . . . . . . . . . . .20
13 PHYSICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
14 ELECTRIC HEAT MINIMUM SUPPLY AIR CFM. . . . .21
15 GAS APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . 21
16 GAS PIPE SIZING - CAPACITY OF PIPE. . . . . . . . . .22
17 SUPPLY AIR LIMITATIONS. . . . . . . . . . . . . . . . . . . . .26
18 BLOWER PERFORMANCE 7-1/2 TON
STANDARD MOTOR - SIDE DUCT (IMPERIAL) . . . . 27
19 BLOWER PERFORMANCE 7-1/2 TON
STANDARD MOTOR - SIDE DUCT (METRIC) . . . . . . 27
20 BLOWER PERFORMANCE 7-1/2 TON
OPTIONAL MOTOR - SIDE DUCT (IMPERIAL). . . . . 27
21 BLOWER PERFORMANCE 7-1/2 TON
OPTIONAL MOTOR - SIDE DUCT (METRIC). . . . . . . 27
22 BLOWER PERFORMANCE 10 TON
STANDARD MOTOR - SIDE DUCT (IMPERIAL) . . . . 28
23 BLOWER PERFORMANCE 10 TON
STANDARD MOTOR - SIDE DUCT (METRIC) . . . . . . 28
24 BLOWER PERFORMANCE 10 TON
OPTIONAL MOTOR - SIDE DUCT (IMPERIAL). . . . . 28
25 BLOWER PERFORMANCE 10 TON
OPTIONAL MOTOR - SIDE DUCT (METRIC). . . . . . . 29
26 BLOWER PERFORMANCE 12-1/2 TON -
SIDE DUCT (IMPERIAL) . . . . . . . . . . . . . . . . . . . . . . .29
27 BLOWER PERFORMANCE 12-1/2 TON -
SIDE DUCT (METRIC). . . . . . . . . . . . . . . . . . . . . . . . .29
28 BLOWER PERFORMANCE 7-1/2 TON
STANDARD MOTOR - DOWNSHOT (IMPERIAL) . . . 30
Tbl. #
29 BLOWER PERFORMANCE 7-1/2 TON
STANDARD MOTOR - DOWNSHOT (METRIC) . . . . 30
30 BLOWER PERFORMANCE 7-1/2 TON
OPTIONAL MOTOR - DOWNSHOT (IMPERIAL) . . . . 30
31 BLOWER PERFORMANCE 7-1/2 TON
OPTIONAL MOTOR - DOWNSHOT (METRIC). . . . . . 31
32 BLOWER PERFORMANCE 10 TON
STANDARD MOTOR - DOWNSHOT (IMPERIAL) . . . 31
33 BLOWER PERFORMANCE 10 TON
STANDARD MOTOR - DOWNSHOT (METRIC) . . . . 31
34 BLOWER PERFORMANCE 10 TON
OPTIONAL MOTOR - DOWNSHOT (IMPERIAL) . . . . 32
35 BLOWER PERFORMANCE 10 TON
OPTIONAL MOTOR - DOWNSHOT (METRIC). . . . . . 32
36 BLOWER PERFORMANCE 12-1/2 TON -
DOWNSHOT (IMPERIAL) . . . . . . . . . . . . . . . . . . . . . . 33
37 BLOWER PERFORMANCE 12-1/2 TON -
DOWNSHOT (METRIC) . . . . . . . . . . . . . . . . . . . . . . . 33
38 INDOOR BLOWER SPECIFICATIONS. . . . . . . . . . . . 33
39 ADDITIONAL STATIC RESISTANCE 50” CABINET
(IMPERIAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
40 ADDITIONAL STATIC RESISTANCE 42” CABINET
(IMPERIAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
41 ADDITIONAL STATIC RESISTANCE 50” CABINET
(METRIC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
42 ADDITIONAL STATIC RESISTANCE 42” CABINET
(METRIC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
43 MOTOR SHEAVE DATUM . . . . . . . . . . . . . . . . . . . . . 39
44 ELECTRIC HEAT LIMIT SETTING . . . . . . . . . . . . . . . 42
45 ELECTRIC HEAT ANTICIPATOR SETPOINTS . . . . . 42
46 GAS HEAT LIMIT SETTINGS . . . . . . . . . . . . . . . . . . . 44
47 GAS HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . 44
48 GAS HEAT STAGES. . . . . . . . . . . . . . . . . . . . . . . . . . 46
49 GAS RATE CUBIC FEET PER HOUR . . . . . . . . . . . . 47
50 7.5 TON SUPERHEAT CHARGING . . . . . . . . . . . . . . 48
51 10 TON SUPERHEAT CHARGING. . . . . . . . . . . . . . . 49
52 UNIT CONTROL BOARD FLASH CODES . . . . . . . . . 50
53 IGNITION CONTROL FLASH CODES . . . . . . . . . . . . 51
Pg. #
4 Unitary Products Group
127408-YIM-B-0606
GENERAL
YORK® Predator® units are single package air conditioners
with optional gas heating designed for outdoor installation on
a rooftop or slab and for non-residential use. These units can
be equipped with factory or field installed electric heaters for
heating applications.
These units are completely assembled on rigid, permanently
attached base rails. All piping, refrigerant charge, and electrical wiring is factory installed and tested. The units require
electric power, gas supply (where applicable), and duct connections. The electric heaters have nickel-chrome elements
and utilize single-point power connection.
SAFETY CONSIDERATIONS
If the information in this manual is not followed
exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
WHAT TO DO IF YOU SMELL GAS:
a. Do not try to light any appliance.
b. Do not touch any electrical switch; do not use
any phone in your building.
c. Immediately call your gas supplier from a neigh-
bor’s phone. Follow the gas supplier’s instructions.
Should overheating occur, or the gas supply fail to
shut off, shut off the manual gas valve to the furnace
before shutting off the electrical supply.
Do not use this furnace if any part has been under
water. Immediately call a qualified service technician
to inspect the furnace and to replace any part of the
control system and any gas control which has been
under water.
Due to system pressure, moving parts, and electrical components, installation and servicing of air conditioning equipment
can be hazardous. Only qualified, trained service personnel
should install, repair, or service this equipment. Untrained
personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters.
Observe all precautions in the literature, labels, and tags
accompanying the equipment whenever working on air conditioning equipment. Be sure to follow all other applicable
safety precautions and codes including ANSI Z223.1 or CSAB149.1- latest edition.
Wear safety glasses and work gloves. Use quenching cloth
and have a fire extinguisher available during brazing operations.
d. If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
INSPECTION
As soon as a unit is received, it should be inspected for possible damage during transit. If damage i s 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.
This furnace is not to be used for temporary heating
of buildings or structures under construction.
Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury. Improper
installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer
to this manual. For assistance or additional information consult a qualified installer, service agency or
the gas supplier.
Unitary Products Group 5
127408-YIM-B-0606
REFERENCE
Additional information is available in the following reference
forms:
• Technical Guide - DM090-150, 259335
• General Installation - DM090 - 150, 127408
• Pre-start & Post-start Check List
• Economizer Accessory Downflow Factory Installed
Downflow Field Installed
Horizontal Field Installed
• Motorized Outdoor Air Damper
• Manual Outdoor Air Damper (0-100%)
• Manual Outdoor Air Damper (0-35%)
• Gas Heat Propane Conversion Kit
• Gas Heat High Altitude Kit (Natural Gas)
• Gas Heat High Altitude Kit (Propane)
• –60°F Gas Heat Kit
• Electric Heater Accessory
APPROVALS
Design certified by CSA as follows:
1. For use as a cooling only unit, cooling unit with supplemental electric heat or a forced air furnace.
2. For outdoor installation only.
3. For installation on combustible material and may be
installed directly on combustible flooring or, in the U.S.,
on wood flooring or Class A, Class B or Class C roof covering materials.
4. For use with natural gas (convertible to LP with kit).
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.
RENEWAL PARTS
Contact your local York® parts distribution center for authorized replacement parts.
Incorrect installation may create a condition where the
operation of the product could cause personal in jury
or property damage.
The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. N OTES 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.
6 Unitary Products Group
127408-YIM-B-0606
NOMENCLATURE
D M 090 N10 A 7 A AA 3 0 1 2 4 A
7.5-12.5 Ton York® Model Number Nomenclature
Product Category
D = A/C, Single Pkg., R-22
Product Identifier
M = 9.0 EER A/C
Nominal Cooling Capacity
090 = 7.5 Ton
120 = 10.0 Ton
150 = 12.5 Ton
Heat Type and Nominal Heat Capacity
C00 = Cooling Only. No heat installed
Gas Heat Options
N10 = 100 MBH Output Aluminized Steel
N15 = 150 MBH Output Aluminized Steel
S10 = 100 MBH Output Stainless Steel
S15 = 150 MBH Output Stainless Steel
Electric Heat Options
E09 = 9 KW
E18 = 18 KW
E24 = 24 KW
E36 = 36 KW
E54 = 54 KW
Airflow
A = Std. Motor
B = Std. Motor/Econo./Barometric Relief (Downflow
Only)
C = Std. Motor/Econo./Power Exhaust (Downflow Only)
D = Std. Motor/Motorized Damper (Downflow Only)
E = Std. Motor/Horizontal Economizer (No Baro.)
F = Std. Motor/Slab Econo./Power Exhaust
(Downflow Only)
G = Std. Motor/Slab Econo./Barometric Relief
(Downflow Only)
N=HiStaticMtr.
P = Hi Static Mtr./Econo./Barometric Relief
(Downflow Only)
Q = Hi Static Mtr./Econo./Power Exhaust
(Downflow Only)
R = Hi Static Mtr./Motorized Damper (Downflow Only)
S = Hi Static Mtr./Horizontal Economizer (No Baro.)
T = Hi Static Mtr./Slab Econo./Power Exhaust
(Downflow Only)
U = Hi Static Mtr./Slab Econo./Barometric Relief
(Downflow only)
Voltage
7 = 380/415-3-50
Product Style
A = Style A
B = Style B
C = Style C
These four digits will not be assigned until a quote is requested, or an order placed.
SS Drain Pan
Honeywell Controller, DFS, APS
Simplicity IntelliComfort Controller
Simplicity IntelliComfort Controller w/ModLinc
2" Pleated filters
BAS Ready Unit with Belimo Economizer
Shipping Bag
Any Combination of Additional Options that Don’t Have an Option Code Pre-assigned
Product Generation
3 = Third Generation
4 = Fourth Generation
AA = None
AB = Phase Monitor
AC = Coil Guard
AD = Dirty Filter Switch
AE = Phase Monitor & Coil Guard
AF = Phase Monitor & Dirty Filter Switch
AG = Coil Guard & Dirty Filter Switch
AH = Phase Monitor, Coil Guard & Dirty Filter Switch
ZZ = If desired option combination is not listed above, ZZ will be assigned and configuration options will be
located in digits 15-18.
Installation Options
A = No Options Installed
B=Option1
C=Option2
D = Options 1 & 2
E=Option3
F = Option 4
G = Options 1 & 3
H = Options 1 & 4
J=Options1,2&3
K = Options 1, 2, & 4
L = Options 1,3 & 4
M=Options1,2,3,&4
N = Options 2 & 3
P = Options 2 & 4
Q = Options 2, 3, & 4
R = Options 3 & 4
S=Option5
T = Options 1 & 5
U = Options 1, 3, & 5
V = Options 1, 4, & 5
W = Options 1, 3, 4, & 5
X = Options 3 & 5
Y = Options 4 & 5
Z = Options 3, 4 & 5
Configuration Options (not required for all units)
Additional Options
RC = Coil Guard, Shipping Bag & American Flag
TA = Technicoat Condenser Coil
TJ = Technicoat Evaporator Coil
TS = Technicoat Evaporator & Condenser Coils
Options
1 = Disconnect
2 = Non-Pwr'd Conv. Outlet
3 = Smoke Detector S.A.
4 = Smoke Detector R.A.
5=Pwr'dConv.Outlet
Unitary Products Group 7
INSTALLATION
INSTALLATION SAFETY INFORMATION
127408-YIM-B-0606
Read these instructions before continuing this appliance
installation. This is an outdoor combination heating and cooling unit. The installer must assure that these instructions are
made available to the consumer and with instructions to
retain them for future reference.
1. Refer to the furnace rating plate for the approved type of
gas for this furnace.
2. Install this furnace only in a location and position as
specified on Page 10 of these instructions.
3. Never test for gas leaks with an open flame. Use commercially available soap solution made specifically for
the detection of leaks when checking all connections, as
specified on Pages 8, 22, 23 and 45 of these instructions.
4. Always install furnace to operate within the furnace's
intended temperature-rise range with the duct system
and within the allowable external static pressure range,
as specified on the unit name/rating plate, specified on
Page 47 of these instructions.
5. This equipment is not to be used for tempora ry heating
of buildings or structures under construction.
Bracket
Screws
Turn down
FIGURE 1 - UNIT SHIPPING BRACKET
4. Remove the toolless doorknobs and instruction packet
prior to installation.
Condenser
Coil External
Protective
Covering
Barometric
Relief Hood in
Shipping Location (if included)
FIGURE 2 - CONDENSER COVERING
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warning exactly could
result in serious injury, death or property damage.
Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically for the detection of leaks to check a ll connections. A fire or explosion may result causing property
damage, personal injury or loss of life.
PRECEDING INSTALLATION
1. Remove the two screws holding the brackets in the front,
rear and compressor side fork-lift slots.
2. Turn each bracket toward the ground and the protective
plywood covering will drop to the ground.
3. Remove the condenser coil external protective covering
prior to operation.
Toolless
Doorknobs
Installation
Instruction
Packet
FIGURE 3 - COMPRESSOR SECTION
8 Unitary Products Group
127408-YIM-B-0606
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.
The furnace and its individual shut-off valve must be
disconnected from the gas supply piping system
during any pressure testing at pressures in excess
of 1/2 PSIG.
Pressures greater than 1/2 PSIG will cause gas
valve damage resulting in a hazardous condition. If it
is subjected to a pressure greater than 1/2 PSIG, the
gas valve must be replaced.
The furnace must be isolated from the gas supply
piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less
than 1/2 PSIG.
LIMITATIONS
These units must be installed in accordance with the following:
1. Local building codes, and
2. Local gas utility requirements
3. Local plumbing and waste water codes, and
4. Other applicable local codes.
Refer to Tables 1 & 2 for unit application data.
After installation, gas fired units must be adjusted to obtain a
temperature rise within the range specified on the unit rating
plate.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer’s and/or customer’s
expense.
Size of unit for proposed installation should be based on heat
loss/heat gain calculation made according to the metho ds of
Air Conditioning Contractors of America (ACCA).
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FIGURE 4 - PREDATOR® COMPONENT LOCATION
This furnace is not to be used for temporary heating of buildings or structures under construction.
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Unitary Products Group 9
127408-YIM-B-0606
TABLE 1: UNIT VOLTAGE LIMITATIONS
Power Rating
380/415-3-50 342 456
*.
Utilization range “A” in accordance with ARI Standard
110.
TABLE 2: UNIT TEMPERATURE LIMITATIONS
Wet Bulb T emperature °F(°C) of Air
Dry Bulb Temperature °F(°C) of Air
*
Temperature Min. Max.
on Evaporator Coil
on Condenser Coil
Minimum Maximum
57(14) 72(22)
0(-18) 125(52)
LOCATION
Use the following guidelines to select a suitable location for
these units:
1. Unit is designed for outdoor installation only.
2. Condenser coils must have an unlimited supply of air.
Where a choice of location is possible, position the unit
on either north or east side of building.
3. Suitable for mounting on roof curb.
4. For ground level installation, use a level concrete slab
with a minimum thickness of 4 inches (102 mm). The
length and width should be at least 6 inches (152 mm)
greater than the unit base rails. Do not tie slab to the
building foundation.
5. Roof structures must be able to support the weight of the
unit and its options/accessories. Unit must be installed on
a solid, level roof curb or appropriate angle iron frame.
6. Maintain level tolerance to 1/2” (13 mm) across the entire
width and length of unit.
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig
the unit by attaching chain or cable slings to the lifting holes
provided in the base rails. Spreader bars, whose length
exceeds the largest dimension across the unit, MUST be
used across the top of the unit.
If a unit is to be installed on a roof curb other than a
YORK roof curb, gasketing must be applied to all surfaces that come in contact with the unit underside.
Before lifting, make sure the unit weight is distributed equally on the rigging cables so it will lift evenly.
Units may be moved or lifted with a forklift. Slotted openings
in the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 60 INCHES
(1524 mm.).
All panels must be secured in place when the unit is
lifted.
The condenser coils should be protected from rigging cable damage with plywood or other suitable
material.
Excessive exposure of this furnace to contaminated
combustion air may result in equipment damage or
personal injury. Typical contaminates include: permanent wave solution, chlorinated waxes and cleaners, chlorine based swimming pool chemicals, water
softening chemicals, carbon tetrachloride, Halogen
type refrigerants, cleaning solvents (e.g. perchloroethylene), printing inks, paint removers, varnishes,
hydrochloric acid, cements and glues, antistatic fabric softeners for clothes dryers, masonry acid wash-
L E F T
A
D
FIGURE 5 - UNIT 4 POINT LOAD
F R O N T
CB
ing materials.
10 Unitary Products Group
127408-YIM-B-0606
TABLE 3: UNIT WEIGHT
Model
090
120
150
Shipping Weight
lbs. (kg)
865 (392.4) 860 (390.1)
1143 (518.6) 1138 (516.3)
1202 (545.3) 1197 (543.1)
TABLE 4: 4 POINT LOAD WEIGHT
Model
090
120
150
ABCD
192
(87.1)
245
(111)
262
(118)
Location (lbs. (kg.))
143
(64.9)
209
(94)
224
(101)
TABLE 5: 6 POINT LOAD WEIGHT
Model
090
120
150
ABCDEF
135
(61.2)
168
(76.2)
180
(81.6)
L E F T
A
Locations (lbs. (kg.))
110
(49.9)91(41.3)
151
(68.4)
161
(73)
136
(61.7)
145
(65.8)
C
B
F
(64.4)
(89.8)
(96.2)
E
FIGURE 6 - UNIT 6 POINT LOAD
X
LEFT
Y
FRONT
Operating Weight
lbs. (kg)
224
(101.6)
305
(138)
327
(148)
142
198
212
F R O N T
(136.5)
(162)
(173)
172
(78.0)
219
(99.3)
235
(107)
D
301
357
382
(95.71)
(110.7)
(118.8)
211
244
262
CLEARANCES
All units require particular clearances for proper operation and
service. Installer must make provisions for adequate combustion and ventilation air in accordance with section 5.3 of Air for
Combustion and Ventilation of the National Fuel Gas Code,
ANSI Z223.1 – Latest Edition (in U.S.A.), or Sections 7.2, 7.3,
or 7.4 of Gas Installation Codes, CSA-B149.1 (in Canada) Latest Edition, and/or applicable provisions of the local building
codes. Refer to Table 7 for clearances required for combustible
construction, servicing, and proper unit operation.
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet, combustion
air inlet or vent outlets.
Excessive exposure to contaminated combustion air
will result in safety and performance related problems. To maintain combustion air quality, the recommended source of combustion air is the outdoor air
supply. The outdoor air supplied for combustion
should be free from contaminants due to chemical
exposure that may be present from the following
sources.
• Commercial buildings
• Indoor pools
• Laundry rooms
• Hobby or craft rooms
• Chemical storage areas
The following substances should be avoided to
maintain outdoor combustion air quality.
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine based swimming pool cleaners
• Water softening chemicals
• De-icing salts or chemicals
• Carbon tetrachloride
• Halogen type refrigerants
• Cleaning solvents (such as perchloroethylene)
• Printing inks, paint removers, varnishes, etc.
• Hydrochloric acid
• Cements and glues
• Anti-static fabric softeners for clothes dryers
• Masonry acid washing materials
Unit Model Number X Y
DM090 38 (965.2) 23 (584.2)
DM120 47 1/2 (1206.5) 25 1/2 (647.7)
DM150 47 1/2 (1206.5) 25 1/2 (647.7)
FIGURE 7 - UNIT CENTER OF GRAVITY
Unitary Products Group 11
127408-YIM-B-0606
8
/()7
FIGURE 8 - UNIT DIMENSIONS
TABLE 6: UNIT HEIGHT
Unit Model Number X
DM090
DM120
DM150
DETAIL B
G a s P i p e I n l e t
42 (1067)
50 3/4 (1289)
50 3/4 (1289)
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NOTE: A one-inch clearance must be provided between
any combustible material and the supply du ctwork
for a distance of 3 feet from the unit.
DETAIL C
3 - 3 / 4
( 9 5 )
2 - 3 / 8
( 6 0 )
5 - 1 / 4
( 1 3 5 )
1 7 - 1 3 / 1 6
( 4 5 0 )
V i e w o f W a l l A c r o s s f r o m C o i l
TABLE 7: UNIT CLEARANCES
†
Top
Front
‡
Rear
*.
In inches and millimeters, in.(mm).
†.
Units must be installed outdoors. Overhanging struc-
72(1830)
36(915)
36(915)
*
Right
Left
Bottom
ture or shrubs should not obstruct condenser air discharge outlet.
‡.
To remove the slide-out drain pan, a rear clearance of
60” (1525 mm) is required. If space is unavailable, the
drain pan can be removed through the front by separating the corner wall.
**.
Units may be installed on combustible floors.
B a s e
P a n
3 - 9 / 1 6
( 9 0 )
DETAIL D
5 - 3 / 8
12(305)
36(915)
**
0(0)
NOTE: If the unit includes gas heating, locate the unit so
the flue exhaust is at least:
• Three (3) feet above any forced air inlet located within 10
horizontal feet (excluding those integral to the unit).
• Four (4) feet below, four (4) horizontal feet from, or one
(1) foot above any door or gravity air inlet into the building.
• Four (4) feet from electric meters, gas meters, regulators, and relief equipment.
( 1 3 5 )
12 Unitary Products Group
127408-YIM-B-0606
2
(
)
.
6 - 1 3 / 1 6
( 1 7 5 )
L E F T
1 9 - 3 / 1 6
( 4 8 5 )
1 - 3 / 1 6
1 7 - 3 / 1 6
( 5 4 0 )
( 4 3 5 )
1 4 - 2 3 / 3 2
( 3 7 5 )
1 6 - 3 / 8
( 4 1 5 )
1 8 - 1 / 1 6
( 4 6 0 )
6 - 1 3 / 1 6
( 1 7 5 )
3 2 - 1 1 / 1 6
( 8 3 0 )
1 8
( 4 5 5 )
2 7 - 1 / 2
( 7 0 0 )
B o t t o m P o w e r ,
C o n t r o l a n d
C o n v e n i e n c e
O u t l e t W i r i n g
E n t r y
6 3 - 1 / 2
1 6 1 0
( 5 3 5 )
2 1
F R O N T
FIGURE 9 - BOTTOM DUCT OPENINGS (FROM ABOVE)
( 6 1 0 )
( X X X ) I N D I C A T E S
N O T E :
6 - 1 3 / 1 6
( 1 7 5 )
2 4
D I M E N S I O N S I N
M I L L I M E T E R S
B o t t o m g a s
s u p p l y e n t r y
1 2 - 5 / 1 6
( 3 1 5 )
Supply
Air
18-1/4
(465)
5-5/32
(130)
C
NOTE: (XXX) indicates millimeters
FIGURE 10 - REAR DUCT DIMENSIONS
TABLE 8: REAR DUCT DIMENSIONS
Cabinet Size
“A” “B” “C”
50 3/4 (1289) 28 1/4 (717) 18 1/16 (459) 28 1/4 (717
42 (1067) 27 3/4 (705) 12 1/16 (308) 27 1/2 (699)
Dimensions
DOT PLUGS
Return
18-1/4
(465)
A
Air
B
2-31/32
(75)
31-11/16
(805)
Unitary Products Group 13
127408-YIM-B-0606
)
DUCTWORK
Ductwork should be designed and sized according to the
methods in Manual D of the Air Conditioning Contractors of
America (ACCA) or as recommended by any other recognized authority such as ASHRAE or SMACNA.
A closed return duct system should be used. This will not
preclude use of economizers or outdoor fresh air intake. The
supply and return air duct connections a t the unit should be
made with flexible joints to minimize noise.
The supply and return air duct systems should be designed
for the CFM and static pressure requirements of the job. They
should NOT be sized to match the dimensions of the duct
connections on the unit.
Refer to Figure 9 for bottom air duct openings. Refer to Figure 10 for rear air duct openings.
8 0 - 5 / 8
( 2 0 5 0 )
2 0
( 5 1 0 )
6
2 0
( 1 5 0 )
( 5 1 0 )
DUCT COVERS
Units are shipped with the side duct openings covered and a
covering over the bottom of the unit. For bottom duct application, no duct cover changes are necessary. For side duct
application, remove the side duct covers and install over the
bottom duct openings. The panels removed from the side
duct connections are designed to be reused by securing each
panel to its respective downflow opening. But keep in mind
that the supply panel is installed with the painted surface UP,
facing the heat exchanger, while the return panel is installed
with the painted surface DOWN, facing the downflow duct
opening. The supply panel is secured with the bracket
(already in place from the factory) and two screws. It’s a snug
fit for the panel when sliding it between the heat e xchanger
and unit bottom, but there is room. The return panel is
secured with four screws.
R I G H T
S U P P L Y
I N S U L A T E D D E C K U N D E R
C O N D E N S E R S E C T I
O N
2 T Y P .
( 5 0 )
3 0
( 7 6 0 )
5 0 - 1 / 2
( 1 2 8 5 )
N O T E :
R E T U R N
( X X X ) I N D I C A T E S
D I M E N S I O N S I N
M I L L I M E T E R S
( 2 0 5 )
FIGURE 11 - PREDATOR® ROOF CURB DIMENSIONS
3 0 - 1 / 2
F R O N T
5 0 - 1 / 2
( 1 2 8 5 )
7 6 - 5 / 8
( 1 9 4 5 )
9 4
( 2 3 9 0 )
( 7 7 5 )
R E T U R N
8
2 T Y P
( 5 0 )
I N S U L A T E D D E C K U N D E R
C O M P R E S S O R S E C T I O N
1 4
O R
( 3 5 5 )
2 3
( 5 8 5 )
S U P P L Y
F R O N T
( 1 0 0 )
( 6 6 0 )
2 6
4
6 4 - 1 / 4
( 1 6 3 0 )
5 9 - 1 / 4
( 1 5 0 5 )
8 0 - 5 / 8
( 2 0 5 0 )
R I G H T
1 0
( 2 5 5
FIGURE 12 - SUNLINE™ TO PREDATOR
®
TRANSITION ROOF CURBS
14 Unitary Products Group
127408-YIM-B-0606
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 water-proofed.
FIGURE 13 - SIDE PANELS WITH HOLE PLUGS
Note orientation. Panel is “insulation” side up.
CONDENSATE DRAIN
The side condensate drain is reversible and maybe re-oriented to the rear of the cabinet to facilitate condensate piping. A condensate drain connection is available through the
base pan for piping inside the roof curb. Trap the connection
per Figure 16: Condensate Drain. The trap and drain lines
should be protected from freezing.
Plumbing must conform to local codes. Use a sealing compound on male pipe threads. Install condensate drain line
from the 3/4 inch (19 mm) NPT female connection on the unit
to an open drain.
3 " M i n i m u m
( 7 6 . 2 m m )
FIGURE 14 - RETURN DOWNFLOW PLENUM WITH
PANEL
FIGURE 16 - CONDENSATE DRAIN
COMPRESSORS
The compressors are mounted on elastomer insulators. The
mounting bolts have been fully tightened for shipping.
Do not loosen the compressor mounting bolts.
FILTERS
Two-inch filters are supplied with each unit. One-inch filters
may be used with no modification to the filter racks. Filters
must always be installed ahead of evaporator coil and must
be kept clean or replaced with same size and type. Dirty filters reduce the capacity of the unit and result in frosted coils
or safety shutdown. All units use four (4) 20”x25”x2” filters.
The unit should not be operated without filters properly
installed.
Make sure that panel latches are properly positioned
on the unit to maintain an airtight seal.
FIGURE 15 - DISCHARGE PANEL IN PLACE
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THERMOSTAT WIRING
The thermostat should be located on an inside wall approximately 56 inches (1422 mm) above the floor where it will not
be subject to drafts, sun exposure or heat from electrical fixtures or appliances. Follow the manufacturer's instructions
enclosed with thermostat for general installation procedure.
Seven (7) color-coded, insulated wires should be used to
connect the thermostat to the unit. Refer to Table 9 for control
wire sizing and maximum length.
127408-YIM-B-0606
Avoid damage to internal components if drilling
holes for disconnect mounting.
NOTE: Since not all local codes allow the mounting of a dis-
connect on the unit, please confirm compliance with
local code before mounting a disconnect on the unit.
TABLE 9: CONTROL WIRE SIZES
Wire Size Maximum Length
18 AWG
150 Feet (45.72 meters)
POWER AND CONTROL WIRING
Field wiring to the unit, fuses, and disconnects must conform
to provisions of National Electrical Code (NEC), ANSI/NFPA
No. 70 – Latest Edition (in U.S.A.), current Canadian Electrical Code C221, and/or local ordinances. The unit must be
electrically grounded in accordance with NEC and CEC as
specified above and/or local codes.
Voltage tolerances which must be maintained at the compressor terminals during starting and running conditions are
indicated on the unit Rating Plate and Table 1.
The internal wiring harnesses furnished with thi s unit are an
integral part of the design certified unit. Field alteration to
comply with electrical codes should not be required. If any of
the wire supplied with th e un it must be re pla ce d, rep lac em en t
wire must be of the type shown on the wiring diagram and the
same minimum gauge as the replaced wire.
A disconnect must be utilized for these units. When installing
a disconnect, refer to Figure 4 for the recommended mounting location.
Electrical line must be sized properly to carry the load. USE
COPPER CONDUCTORS ONLY. Each unit must be wired
with a separate branch circuit fed directly from the meter
panel and properly fused.
Refer to Figures 17, 18 and 19 for typical field wiring and to
the appropriate unit wiring diagram mounted inside control
doors for control circuit and power wiring information.
When connecting electrical power and control wiring
to the unit, water-proof connectors must be used so
that water or moisture cannot be drawn into the unit
during normal operation. The above water-proofing
conditions will also apply when installing a field supplied disconnect switch.
POWER WIRING DETAIL
Units are factory wired for the voltage shown on the unit
nameplate. Refer to Electrical Data Tables 10 through 12 size
power wiring, fuses, and disconnect switch.
Power wiring is brought into the unit through the side of the
unit or the basepan inside the curb.
16 Unitary Products Group
127408-YIM-B-0606
2
T H E R M O S T A T
T E R M I N A L S
R C
R H
Y 1
Y 2
W 1
W 2
X 1
X 3
X 4
A 1
A 2
1
E l e c t r o n i c p r o g r a m m a b l e T h e r m o s t a t 2 E T 0 7 7 0 0 1 0 0 2 4 ( i n c l u d e s s u b b a s e ) .
T e r m i n a l s A 1 a n d A 2 p r o v i d e a r e l a y o u t p u t t o c l o s e t h e o u t d o o r
e c o n o m i z e r d a m p e r s w h e n t h e t h e r m o s
1
G
C
T
T
T O R E M O T E S E N S O R
2 E T 0 4 7 0 1 3 2 4 I F U S E D
2
t a t s w i t c h e s t o t h e s e t - b a c k p o s i t i o n .
FIGURE 17 - ELECTRONIC THERMOSTAT FIELD WIRING
U N I T T E R M I N A L S
S T R I P T B 1
R
Y 1
Y 2
W 1
W 2
G
C
X
O C C
2 4 V o l t
T r a n s f o r m e r
T - S T A T
W 1
W 2
Y 1
G
Y 2
C
R H
R C
W 1
W 2
Y 1
G
O C C
M I N P O S
Y 2
X
R
S D
C
FIGURE 18 - FIELD WIRING 24 VOLT THERMOSTAT
R E M O T E
U N I T C O N T R O L
B O A R D
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GROUND
LUG
127408-YIM-B-0606
TERMINAL BLOCK TB1
FIELD SUPPLIED
DISCONNECT
THREE
PHASE
POWER
SUPPLY
FIGURE 19 - FIELD WIRING DISCONNECT - COOLING UNIT WITH OR WITHOUT ELECTRIC HEAT
CONTACTOR 1M
T1
T2
T3
L1
L2
L3
FIELD SUPPLIED
GROUND
DISCONNECT
LUG
THREE
PHASE
POWER
SUPPLY
FIGURE 20 - FIELD WIRING DISCONNECT - COOLING UNIT WITH GAS HEAT
18 Unitary Products Group
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