McDaniel Metals GPH13, GPC13 Service Instructions

Service Instructions

GPH13 P ACKAGE HEAT PUMPS

GPC13 PACKAGE COOLING

MULTI-POSITION MODELS

WITH R-22

This manual is to be used by qualified, professionally trained HVAC technicians only. Goodman does not assume any responsibility for property damage or personal injury due to improper service procedures or services performed by an unqualified person.

RS6300010r3

March 2009

INDEX

IMPORT ANT INFORMATION.....................................................................................................................................4

PRODUCT IDENTIFICA TION - GPC/GPH13**M*................................................................................................ 6 - 7

ACCESSORIES .........................................................................................................................................................8

GPGHFR101-103 EXTERNAL HORIZONT AL FIL TER RACK .....................................................................................9

GPH13MFR FIL TER RACK ...................................................................................................................................... 10

PGMDD101-103 DOWNFLOW MANUAL FRESH AIR DAMPERS ........................................................................... 10

PGMDMD102-103 DOWNFLOW MOTORIZED FRESH AIR DAMPERS .................................................................. 10

PGMDH102-103 HORIZONT AL MANUAL FRESH AIR DAMPERS .......................................................................... 11

PGMDMH102-103 HORIZONT AL MOTORIZED FRESH AIR DAMPERS .................................................................. 11

SQRPG 101-103 SQUARE TO ROUND CONVERTER, DOWNFLOW...................................................................... 11

SQRPGH 101-103 SQUARE TO ROUND CONVERTER, HORIZONT AL................................................................... 12

GPH13MED103 DOWNFLOW ECONOMIZER ......................................................................................................... 12

GPC13MED103 DOWNFLOW ECONOMIZER ......................................................................................................... 12

PEHH 101-103 HORIZONT AL ECONOMIZER .......................................................................................................... 13

PEHC 101-103 HORIZONT AL ECONOMIZER .......................................................................................................... 13

PGC101-103 ROOF CURBS ....................................................................................................................................13

PRODUCT DESIGN ................................................................................................................................................. 14

ELECTRICAL WIRING............................................................................................................................................. 16

LINE VOLTAGE WIRING ......................................................................................................................................... 16

SYSTEM OPERA TION ............................................................................................................................................. 17

GPC/GPH13[24-60]M21*

DEFROST CYCLE ............................................................................................................................................... 18

FAN OPERA TION................................................................................................................................................. 18

SYSTEM OPERA TION ............................................................................................................................................. 19

GPC/GPH13[24-60]M23*

DEFROST CYCLE ............................................................................................................................................... 19

FAN OPERA TION................................................................................................................................................. 19

SYSTEM OPERA TION ............................................................................................................................................. 20

GPC/GPH13[24-60]M24*

DEFROST CYCLE ............................................................................................................................................... 20

FAN OPERA TION................................................................................................................................................. 20

SCHEDULED MAINTENANCE ................................................................................................................................. 23

ONCE A MONTH ..................................................................................................................................................... 23

ONCE A YEAR ......................................................................................................................................................... 23

TEST EQUIPMENT .................................................................................................................................................. 23

SERVICING ............................................................................................................................................................. 24

COOLING /HEA T PUMP- SERVICE ANALYSIS GUIDE........................................................................................... 24

S-1 CHECKING VOL TAGE.......................................................................................................................................25

S-2 CHECKING WIRING.......................................................................................................................................... 26

S-3 CHECKING THERMOST A T , WIRING , AND ANTICIP A TOR ............................................................................... 26

S-3A Thermostat and Wiring .....................................................................................................

S-3B Cooling Anticipator....................................................................................................................................... 26

S-3C Heating Anticipator....................................................................................................................................... 26

S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT ................................................................................... 27

S-7 CHECKING CONT ACTOR AND/OR RELA YS ................................................................................................... 27

S-8 CHECKING CONT ACTOR CONT ACTS ............................................................................................................. 27

........................... 26

S-9 CHECKING FAN RELA Y CONTACTS ................................................................................................................ 28

S-11 CHECKING LOSS OF CHARGE PROTECT OR .............................................................................................. 29

S-15 CHECKING CAP ACITOR................................................................................................................................. 29

S-15A Resistance Check........................................................................................................................................ 30

S-15B Capacitance Check..................................................................................................................................... 30

S-16 CHECKING MOTORS...................................................................................................................................... 30

S-16A CHECKING F AN AND BLOWER MOTOR WINDINGS (PSC MOT ORS) ....................................................... 30

S-16D CHECKING GE X13

MOTORS ................................................................................................................... 30

S-17 CHECKING COMPRESSOR WINDINGS ......................................................................................................... 31

S-17A Resistance T est ........................................................................................................................................... 31

S-17B Ground T est ................................................................................................................................................. 32

S-17D Operation T est............................................................................................................................................. 32

S-18 TESTING CRANKCASE HEA TER .................................................................................................................... 32

S-21 CHECKING REVERSING V ALVE AND SOLENOID ......................................................................................... 33

S-24 TESTING DEFROST CONTROL ..................................................................................................................... 33

S-25 TESTING DEFROST THERMOSTA T ............................................................................................................... 33

S-50 CHECKING HEA TER LIMIT CONTROL(S) ...................................................................................................... 33

S-52 CHECKING HEA TER ELEMENTS .................................................................................................................... 33

S-100 REFRIGERA TION REPAIR PRACTICE.......................................................................................................... 34

S-101 LEAK TESTING............................................................................................................................................. 34

S-102 EV ACUA TION ................................................................................................................................................ 34

S-103 CHARGING ................................................................................................................................................... 35

S-104 CHECKING COMPRESSOR EFFICIENCY ..................................................................................................... 36

S-108 SUPERHEA T ................................................................................................................................................. 36

S-109 CHECKING SUBCOOLING............................................................................................................................ 36

S-11 1 FIXED ORIFICE RESTRICTION DEVICES..................................................................................................... 38

S-112 CHECKING RESTRICTED LIQUID LINE........................................................................................................ 38

S-113 REFRIGERANT OVERCHARGE..................................................................................................................... 38

S-114 NON-CONDENSABLES ................................................................................................................................. 38

S-115 COMPRESSOR BURNOUT ........................................................................................................................... 38

S-122 REVERSING VA LVE REPLACEMENT ........................................................................................................... 39

S-200 CHECKING EXTERNAL ST A TIC PRESSURE................................................................................................ 39

S-201 CHECKING TEMPERA TURE RISE ................................................................................................................ 40

WIRING DIAGRAMS ............................................................................................................................................... 41

OT18-60A OUTDOOR THERMOST A T ..................................................................................................................... 41

OT18-60A OUTDOOR THERMOST A T ..................................................................................................................... 42

SINGLE PHASE HKR KITS ..................................................................................................................................... 43

3-PHASE HKR3* HEA T KITS (15KW & 20 KW)....................................................................................................... 44

3-PHASE HKR4* HEAT KITS (15 KW ).................................................................................................................... 45

3-PHASE HKR4* HEA T KITS (15 KW) ..................................................................................................................... 45

3-PHASE HKR4* HEA T KITS (20 KW) ..................................................................................................................... 46

GPH13MED ECONOMIZER FOR GPC/GPH13**M2* (built before 3/2008) ............................................................. 47

GPH/GPC13MED ECONOMIZER FOR GPC/GPH13**M2* (built after 3/2008) ........................................................ 48

IMPORTANT INFORMATION

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual. REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE

SERVICE MANUAL BEFORE BEGINNING REPAIRS.

IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS

WARNING

HIS UNIT SHOULD NOT BE CONNECTED TO. OR USED IN CONJUNCTION WITH, ANY DEVI CES THAT ARE NOT DESIGN CERTIFI ED FOR US E WITH THI S UNIT OR HAV E NOT BEEN TESTED AND APPROVED BY FROM THE USE OF DEVICES THAT HAVE NOT BEE N APPROVED OR CERTIFED BY

GOODMAN. SERIOUS PROPERTY DAMAGE OR PERSONAL INJURY, REDUCED UNIT PE RFORMANCE AND/OR HAZARDOUS CONDITIONS MAY RESULT

GOODMAN.

WARNING

O PREVENT THE RISK OF PROPE RTY DAMAGE, PERSONAL INJURY, OR DEATH, DO NOT STORE COMBUSTIBLE MATE RIALS OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE.

WARNING

OODMAN WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING F ROM IMPROPER SERVICE OR SERVICE PROCEDURES.

F YOU INSTALL OR PERFORM SERVICE ON THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE WHICH

MAY RESU LT.

ANY JURISDICTIONS REQU IRE A LICE NSE TO INSTALL OR SERVICE HEATING AND AIR CONDI TIO NING EQUIPMENT.

To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact:

CONSUMER INFORMA TION LINE

GOODMAN® BRAND PRODUCTS

TOLL FREE 1-877-254-4729 (U.S. only)

email us at: customerservice@goodmanmfg.com

fax us at: (713) 856-1821

(Not a technical assistance line for dealers.)

Outside the U.S., call 1-713-861-2500

(Not a technical assistance line for dealers.)

Your telephone company will bill you for the call.

IMPORTANT INFORMATION

SAFE REFRIGERANT HANDLING

While these items will not cover every conceivable situation, they should serve as a useful guide.

WARNING

REFRIGERANTS ARE H EAVIER T HAN AIR. THEY CAN "PUS H OUT" THE

OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE. POSSI BLE DIFFI CULTY IN BRE ATHIN G OR DEATH:

EVER PURGE REFRIGERANT INTO AN ENCLOSED ROOM OR SPACE. BY

•

LAW, ALL REFRIGERANTS MUST BE RECLAIMED.

IF AN INDOOR LEAK IS SUSPECTED, THOROUGHLY VENTIL ATE THE AREA

• BEFORE BEGINNING WORK.

IQUID REFRIGERANT CAN BE VERY COLD. TO AVOID POSSIBLE FROST-

•

BITE OR BL INDNESS, AVOID CONTACT W ITH REFR IGERANT AND WEAR

GLOVES AND GOGGLES. SKIN OR EYES, SEEK MEDICAL HELP IMMEDIATELY.

LWAYS FOLLOW

• AS POIS ONOUS GA S WILL BE PRODUC ED.

F LIQUID REFRIGERANT DOES CONTACT YOUR

EPA

REGULATIONS. NEVER BURN REFRIGERANT,

O AVO ID

WARNING

TO AVOID POSSIBLE EXPLOSION:

EVER APPLY FLAME OR S TEAM TO A REFRIGERAN T CYLINDER. IF YOU

•

MUST HEAT A CYLINDE R FOR FASTER CHARGING , PARTIALLY IMMERSE IT IN WARM WATER.

NEVER FILL A CYLINDE R MORE THAN 80% FULL OF LIQUID REFRIGERANT.

•

NEVER ADD ANYTHING OTHER THAN R-22 TO AN R-22 CYLINDER OR

•

R-410A TO AN R-410A CYLINDER . THE SERVICE EQUIPMENT USED MUST

BE LISTED OR CERTIF IED FOR THE TYPE OF REF RIGERANT USED.

TORE CYLINDERS IN A CO OL, DRY PLACE. NEVER USE A CYLIND ER

•

AS A PLATFORM OR A ROLLER.

WARNING

TO AVOID POSSIBLE EXPLOSION, USE ONLY RETURNABLE (NOT DISPOSABLE)

SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM A SYSTEM.

•

ENSURE THE CYLINDER IS FREE OF DAMA GE WHICH COULD LEAD TO A

LEAK OR EX PLOS ION.

•

ENSURE THE HYDROST ATIC TEST DATE DOES NO T EXCEED 5 YEARS.

•

ENSURE THE PRESSURE RATING MEETS OR EXCEEDS 400 LBS.

WHEN IN DOUBT, DO NOT USE CYLINDER.

WARNING

SYSTEM CONTAMINANTS, IMPROPER SERVICE PROCEDURE AND/OR PHYSICAL

ABUSE AFFECTING HERMETIC COMPRESSOR ELE CTRICAL TERMINALS MAY CAUSE DANGEROUS SYSTEM VENTING.

The successful development of hermetically sealed refrigeration compressors has completely sealed the compressor's moving parts and electric motor inside a common housing, minimizing refrigerant leaks and the hazards sometimes associated with moving belts, pulleys or couplings.

Fundamental to the design of hermetic compressors is a method whereby electrical current is transmitted to the compressor motor through terminal conductors which pass through the compressor housing wall. These terminals are sealed in a dielectric material which insulates them from the housing and maintains the pressure tight integrity of the hermetic compressor. The terminals and their dielectric embedment are strongly constructed, but are vulnerable to careless compressor installation or maintenance procedures and equally vulnerable to internal electrical short circuits caused by excessive system contaminants.

O AVOID POSSIBLE INJURY, EXPLOSION OR DEATH, PRACTICE SAFE

HANDLING OF REFRIGERANTS.

In either of these instances, an electrical short between the terminal and the compressor housing may result in the loss of integrity between the terminal and its dielectric embedment. This loss may cause the terminals to be expelled, thereby venting the vaporous and liquid contents of the compressor housing and system.

A venting compressor terminal normally presents no danger to anyone, providing the terminal protective cover is properly in place.

If, however, the terminal protective cover is not properly in place, a venting terminal may discharge a combination of

(a ) hot lubricating oil and refrigerant (b ) flammable mixture (if system is contaminated

with air)

in a stream of spray which may be dangerous to anyone in the vicinity. Death or serious bodily injury could occur.

Under no circumstances is a hermetic compressor to be electrically energized and/or operated without having the terminal protective cover properly in place.

See Service Section S-17 for proper servicing.

PRODUCT IDENTIFICATION

G P H 13 24 M 2 1 * *

Brand

G: Goodman or Distinctions

Minor Revision

Product Type

Package Cooling/Heating

Product Family

C: Cooling H: Heat Pump

Product Series

13: 13 SEER Rating

Nominal Capacity

24: 24,000 BTUH 30: 30,000 BTUH 36: 36,000 BTUH 42: 42,000 BTUH 48: 48,000 BTUH 60: 60,000 BTUH

Major Revision

Voltage

1: 208-230V/1ph/60Hz 3: 208-230V/3ph/60Hz 4: 460V/3ph/60Hz

Refrigerant

2: R-22 4: R-410A

Configuration

M: Multi-Position

GPC13**M21 GPH13**M21

Chassis Models Chassis Models

Medium 3 Ton Medium 2 - 3 Ton

Large 4 - 5 Ton Large 4 - 5 Ton

GPH13**M23 / M24GPC13**M23

Chassis Models Chassis Models

Medium 3 Ton Medium 3 Ton

Large 4 - 5 Ton Large 4 - 5 Ton

PRODUCT IDENTIFICATION

Multiposition Package Heat Pumps

Model # Description

GPH13**M21AA

Amana/ units. Initial release.

oodman Package Heat Pump 13 Seer Multiposition heat pump

GPC/GPH13[24-60]M2*

GPH1324-60M21AB

Model # Description

GPC13**M21AA

GPC1336/48/60M21AB

Model # Description

Amana/G units. Sound improvements. Change condenser motor and fan blade. Also new dome style grille on the 5 ton.

oodman Package Heat Pump 13 Seer Multiposition heat pump

Multiposition Package Coolers

Amana/G release.

Amana/G Sound improvements. Change condenser motor, fan blade, and new dome style grille.

oodman Package Cooler 13 Seer Multiposition cooling units. Initial

oodman Package Cooler 13 Seer Multiposition cooling units.

3 Phase Multiposition Package Heat Pumps

GPH13**M23AA

GPH1336-60M23AB

GPH1360M24AA

Amana/ 208-230/3/60. Initial release.

Amana/G units. 208-230/3/60. Sound improvements. Change condenser motor, fan blade, and new dome style grille.

Amana/G units. 460/3/60. Initial release.

oodman Package Heat Pump 13 Seer Multiposition cooling units.

oodman Package Heat Pump 13 Seer Multiposition heat pump

3 Phase Multiposition Package Coolers

Model # Description

GPC13**M23AA

GPC1348-60M23AB

Amana/G 230/3/60. Initial release.

Amana/G 230/3/60. Sound Improvements. Change condenser motor, fan blade, and new dome style grille.

oodman Package Cooler 13 Seer Multiposition cooling units. 208-

ACCESSORIES

Part Nu mb er De scripti on

OT18-60A Outdoor Thermostat Kit w/Lockout Stat OT/EHR18-60 Emergenc y Heat Relay Kit

HKR 0 5A, 08, 10, CA H eat e r K it - Sing l e Phase - All GPC/GP H13**M2 1* HKR15A , CA H eat e r K it - Single Pha s e - GPC13( 24-60)M21* / GPH13(30-60)M21* HKR20A , CA H eat e r K it - Single Pha s e - GPC13( 24-60)M21 / GPH 13( 30-60)M21* HKR 3 -15B H eat e r K it - Three P has e - All GPC/GPH13* *M2 3* HKR3-20 B Heater K it - Thre e P has e - GPC/GPH13(48-60)M 23* HKR4-15 A Heater K it - Thre e P has e - GPH1336 M 24* HKR4-20 A Heater K it - Thre e P has e - GPH13(48-60)M 24*

PGC101/102/103 Roof Curb PEHH101/102 Horizontal Economi zer For Heat Pump, Small and Medium Chassis PEHH103 Horizontal Economizer For Heat Pump, Large Chassis PEHC101/102 Horizontal Economi zer For A/C, Small and Medium Chassis PEHC103 Horizontal Economizer For A/C, Large Chassis PGMDD101/102 Manual 25% Fresh Air Damper Downflow Application, Small and Medium Chassis PGMDD103 Manual 25% Fresh Air Damper Downflow Application, Large Chass is PGMDH102 Manual 25% Fresh Air Damper Horizontal Application, Medi um Chassis PGMDH103 Manual 25% Fresh Air Damper Horizontal Application, Large Chassis PGMDMD101/102 Motoriz ed 25% Fresh Air Damper Downflow Application, Small and Medium Chassis PGMDMD103 Motorized 25% Fresh Air Downflow Application, Large Chassis PGMDMH102 Motorized 25% Fresh Air Damper Horizontal Application, Medium Chassis PGMDMH103 Motorized 25% Fresh Air Damper Horizontal Application, Large Chas sis GPC13MED102 Downflow Economizer For A/C, Medium Chassis GPC13MED103 Downflow Ec onomizer For A/C, Large Chassis GPH13MED102 Downflow Ec onomizer For Heat Pump, Medium C hassis GPH13MED103 Downflow Ec onomizer For Heat Pump, Large Chassis GPH13MFR102 Internal Filter Rack, Medium Chassis GPH13MFR103 Internal Filter Rack, Large Chassis

GPGHFR101-103

SQRPG101/102 Square to Round Adapter w/ 16" Round Downflow Application, Medi um Chassis SQRPG103 Square to Round Adapter w/ 18" Round Downflow App lication, Large C hassis SQRPGH101/102 Square to Round Adapter w/ 16" Round Horizontal Application, Medium Chassis SQRPGH103 Square to Round Adapter w/ 18" Round Horizontal Application, Large Chassis CDK36 Flush Mount Concentric Duct Kit CDK36515 Flush Mount Concentric Duct Kit w/ Filter CDK36530 Step Down Concentric Duct Kit CDK36535 Step Down Concentric Duct Kit w/ Filter CDK4872 Flush Mount Concentric Duct Kit CDK4872515 Flush Mount Concentric Duct Kit w/ Filter CDK4872530 Step D own Concentric Duct Kit CDK4872535 Step Down Concentric Duct Kit w/ Filter

GPC/GPH13[24-60]M2*

ACCESSORIES - GPC/GPH****M MODELS

External Horizontal Filter Rack for Goodman/Amana Gas/Electric and Multi-position Package Units All Chassis

ACCESSORIES

CHTP18-60HD Manual Changeover Digital, Nonprogrammable 2 Heat - 1 Cool

HPT18-60 Manual Changeover Nonprogrammable Analog 2 Heat - 1 Cool

HPTA18-60 Manual/Auto Changeover Nonprogrammable Analog 2 Heat - 1 Cool

1213403 White Manual Changeover Nonprogrammable Analog 2 Heat - 1 Cool 1213404 White Manual Changeover Nonprogrammable Digital 2 Heat - 1 Cool 1213406 Beige Manual/Auto Changeover 5 + 2 Programming Digital 3 Heat - 2 Cool 1213407 White Manual Changeover 5 + 2 Programming Digital 2 Heat - 2 Cool 1213410 White Manual Changeover 5 + 2 Programming Digital 2 Heat - 1 Cool

GPC/GPH13[24-60]M2*

GOODMAN® BRAND THERMOSTATS

AMANA® BRAND THERMOSTATS

1213412 White Manual/Auto Changeover 7 Day Programming Digital 3 Heat - 2 Cool 1213431 White Manual/Auto Changeover 7 Day Programming Digital 3 Heat - 2 Cool

EXTERNAL HORIZONTAL FILTER RACK

(GPGHFR101-103)

16"

24"

16" x 25" x 2" FILTER

17 1/4"

26 1/2"

Filter Size: 16" x 25" x 2"

(Requires 1 filter)

Measurement in inches

ACCESSORIES

GPC/GPH13[24-60]M2*

DOWNFLOW FILTER RACK

(GPH13MFR)

P ANEL SIDE VIEW

DUCT SIDE VIEW

FILTER PLATFORM

RIGHT SIDE

LEFT SIDE

DOWNFLOW R/A DUCT OPENING

Filter Size: 14" x 25" x 2" (Requires 2 filters) - Measurement in inches

EV APORATOR

COIL

MOTORIZED/MANUAL FRESH AIR DAMPERS -

(DOWNFLOW APPLICATIONS)

5 3/4

7 5/8

11 7/8

Manual Fresh Air Dampers

MODEL A B

PGMDD101/102 16 16

PGMDD103 18 16

Motorized Fresh Air Dampers

MODEL A B

PGMDMD102 16 16 PGMDMD103 18 16

ACCESSORIES

MOTORIZED/MANUAL FRESH AIR DAMPERS

GPC/GPH13[24-60]M2*

(HORIZONTAL APPLICATIONS)

12 1/8

PGMDD103

12 1/8

PGMDD101/102

BOTTOM VIEW

11 7/8

BOTTOM VIEW

11 7/8

5 3/4

Manual Fresh Air Dampers

MODEL A B

PGMDH102 31 1/2 29 3/4 PGMDH103 39 29 3/4

Motorized Fresh Air Dampers

MODEL A B

PGMDMH102 31 1/2 29 3/4

PGMDMH103 39 29 3/4

SQUARE TO ROUND CONVERTER

(DOWNFLOW APPLICATIONS)

12 1/4 14 3/4

22 3/4 22 1/4

MODEL A B C D RETURN SUPPLY

16 ø 16 ø

12 1/4 14 3/4

18 ø 18 ø

SQRPG101/102 22 3/4 12 1/4 22 1/4 14 3/4 16 16

SQRPG103 22 3/4 12 1/4 22 1/4 14 3/4 18 18

ACCESSORIES

GPC/GPH13[24-60]M2*

SQUARE TO ROUND CONVERTER

(HORIZONTAL APPLICATIONS)

Measurements are in inches.

MODEL A B C

SQRPGH101/102 16 16 1/2 16 1/2

SQRPGH103 18 18 1/2 18 1/2

ECONOMIZER GP*13MED

(DOWNFLOW APPLICATIONS )

Blockoff

Louver Assembly

Extern al Hood Panel

He at Pump

MODEL FITS

GP H 13ME D10 2 Medi um Ch ass is GPH13MED103 Large Chassis

Cooling

GP C 13ME D10 2 Medi um Ch ass is GPC13MED103 Large Chassis

ACCESSORIES

GPC/GPH13[24-60]M2*

ECONOMIZER PEH*101-103

(HORIZONTAL APPLICATIONS)

Measurements in inches

Heat P um p

MODEL ABCDEFILTER

PEHH10 1/102 25 1/ 4 18 18 18 13 3/4 16 1/8 16 X 25 X1 PEHH10 3 35 1/4 18 1/8 18 18 1/4 16 1/8 16 X 25 X1

Cooling

PEHC10 1/102 25 1/ 4 18 18 18 13 3/4 16 1/8 16 X 25 X1 PEHC10 3 35 1/4 18 1/8 18 18 1/4 16 1/8 16 X 25 X1

16 1/8

PGC101, 102, 103

ROOF CURBS

1 5/8

14 1/2

1 3/8

MODEL A B C RETURN SUPPLY

PGC101/102/103 46 1/4* 39 3/8* 14 1/2 12 1/2 x 23* 15 x 22 1/2*

* Inside dimensions

PRODUCT DESIGN

LOCATION & CLEARANCES

NOTE: To ensure proper condensate drainage, unit must be installed in a level position.

In installations where the unit is installed above ground level and not serviceable from the ground (Example: Roof Top installations) the installer must provide a service platform for the service person with rails or guards in accordance with local codes or ordinances.

GPC/GPH13[24-60]M**

NOTE: Roof overhang should be no more than 36" and

provisions made to deflect the warm discharge air out from the overhang.

Minimum clearances are required to avoid air recirculation and keep the unit operating at peak efficiency.

WARNING

TO PREVENT POSSIBLE DAMAGE, THE UNIT SHOULD REMAIN IN AN UPRIGHT POSITION DURING ALL RIGGING AND MOVING OPERA TIONS. TO F ACILITA TE LIFTING AND MOVING IF A CRANE IS USED, PLACE THE UNIT IN AN ADEQUA TE CABLE SLIDE.

Refer to Roof curb Installation Instructions for proper curb installation. Curbing must be installed in compliance with the National Roofing Contractors Association Manual.

Lower unit carefully onto roof mounting curb. While rigging unit, center of gravity will cause condenser end to be lower than supply air end.

Roof Curb

GPC/GPH13[24-60]M**

GPC/GPH Package Units are designed for outdoor installations only in either residential or light commercial applications.

NOTE: To ensure proper condensate drainage, unit must be installed in a level position.

The connecting ductwork (Supply and Return) can be connected for horizontal discharge airflow. In the down discharge applications, a matching Roof Curb (PGC101/102/103) is recommended.

A return air filter must be installed behind the return air grille(s) or provision must be made for a filter in an accessible location within the return air duct. An internal filter rack (GPH13MFR102 & 103) and an external filter rack (GPGHFR101-103) are also available as accessories. The minimum filter area should not be less than those sizes listed in the Specification Section. Under no circumstances should the unit be operated without return air filters.

A 3/4" - 14 NPT drain connector is provided for removal of condensate water from the indoor coil. In order to provide proper condensate flow, do not reduce the drain line size.

Refrigerant flow control is achieved by use of restrictor orifices. These models use the FasTest Access Fitting System, with a saddle that is either soldered to the suction and liquid lines or is fastened with a locking nut to the access fitting box (core) and then screwed into the saddle. Do not remove the core

from the saddle until the refrigerant charge has been removed. Failure to do so could result in property damage or personal injury.

The single phase units use permanent split capacitors (PSC) design compressors. Starting components are therefore not required. A low MFD run capacitor assists the compressor to start and remains in the circuit during operation.

PRODUCT DESIGN

The outdoor fan motor is a single phase capacitor type motors. Air for condensing (cooling) is drawn through the outdoor coil

by a propeller fan, and is discharged vertically out the top of the unit. The outdoor coil is designed for .0 static. No additional restriction (ductwork) shall be applied.

Conditioned air is drawn through the filter(s), field installed, across the evaporator coil and back into the conditioned space by the indoor blower.

COMPRESSORS

Some GPC/GPH series package units use the Compliant Scroll compressor, instead of traditional reciprocating compressors. Still other models use reciprocating compressors.

A scroll is an involute spiral which, when matched with a mating scroll form as shown, generates a series of crescent shaped gas pockets between the two members.

During compression, one scroll remains stationary (fixed scroll) while the other form (orbiting scroll) is allowed to orbit (but not rotate) around the first form.

• Compliant Scroll compressors are more tolerant of liquid refrigerant.

NOTE: Even though the compressor section of a Scroll compressor is more tolerant of liquid refrigerant, continued floodback or flooded start conditions may wash oil from the bearing surfaces causing premature bearing failure.

• Compliant Scroll compressors use white oil which is compatible with 3GS. 3GS oil may be used if additional oil is required.

• Compliant scroll compressors perform "quiet" shutdowns that allow the compressor to restart immediately without the need for a time delay. This compressor will restart even if the system has not equalized.

NOTE: Operating pressures and amp draws may differ from standard reciprocating compressors. This information can be found in the unit's Technical Information Manual.

INDOOR BLOWER MOTOR

Some GPC/GPH model package units use a GE X13TM blower motor while others use the standard PSC type blower motor. The GE X13TM motor is a 3 Phase brushless DC (single phase AC input), ball bearing construction motor with an integral control module with an internal FCC B EMI filter.

The GE X13TM motor is continuously powered with line voltage. The switched 24 volt control signal is controlled by the thermostat.

As this motion occurs, the pockets between the two forms are slowly pushed to the center of the two scrolls while simultaneously being reduced in volume. When the pocket reaches the center of the scroll form, the gas, which is now at a high pressure, is discharged out of a port located at the center.

During compression, several pockets are being compressed simultaneously, resulting in a very smooth process. Both the suction process (outer portion of the scroll members) and the discharge process (inner portion) are continuous.

Some design characteristics of the Compliant Scroll compressor are:

PRODUCT DESIGN

ELECTRICAL WIRING

The units are designed for operation at the voltages and hertz as shown on the rating plate. All internal wiring is complete. Ensure the power supply to the compressor contactor is brought to the unit as shown on the supplied unit wiring diagram. The 24V wiring must be connected between the unit control panel and the room thermostat.

WARNING

TO AVOID PER SON AL I NJURY OR D EATH DUE T O ELECTRIC SHOCK, WI RI NG TO T HE UNI T MUST BE PROPERLY P OLAR IZ ED AND G ROUNDED.

WARNING

TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY OR FIRE, USE ONLY COPPER CONDUCTORS.

LINE VOLTAGE WIRING

Power supply to the unit must be N.E.C. Class 1, and must comply with all applicable codes. The unit must be electrically grounded in accordance with the local codes or, in their absence, with the latest edition of the National Electrical Code, ANSI/NFPA No. 70, or in Canada, Canadian Electrical Code, C22.1, Part 1. A fused disconnected must be provided and sized in accordance with the unit minimum circuit ampacity.

The best protection for the wiring is the smallest fuse or breaker which will hold the equipment on line during normal operation without nuisance trips. Such a device will provide maximum circuit protection.

WARNING

DO NOT EXCEED THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN ON THE UNI T DATA PLATE.

All line voltage connections must be made through weather proof fittings. All exterior power supply and ground wiring must be in approved weather proof conduit. Low voltage wiring from the unit control panel to the thermostat requires coded cable.

The unit transformer is connected for 230V operation. If the unit is to operate on 208V, reconnect the transformer primary lead as shown on the unit wiring diagram.

If it is necessary for the installer to supply additional line voltage wiring to the inside of the package unit, the wiring must comply with all local codes. This wiring must have a minimum temperature rating of 105°C. All line voltage splices must be made inside the unit or heat kit control box.

SYSTEM OPERATION

COOLING

The refrigerant used in the system is R-22. It is clear, colorless, non-toxic, non-irritating, and non-explosive liquid. The chemical formula is CHCLF pressure is -41.4°F.

A few of the important principles that make the refrigeration cycle possible are: heat always flows from a warmer to a cooler body, under lower pressure a refrigerant will absorb heat and vaporize at a low temperature, the vapors may be drawn off and condensed at a higher pressure and temperature to be used again.

The indoor evaporator coil functions to cool and dehumidify the air conditioned spaces through the evaporative process taking place within the coil tubes.

NOTE: Actual temperatures and pressures are to be obtained from the expanded ratings in the Technical Information Manual.

High temperature, high pressure vapor leaves the compressor through the discharge line and enters the condenser coil. Air drawn through the condenser coil by the condenser fan causes the refrigerant to condense into a liquid by removing heat from the refrigerant. As the refrigerant is cooled below its condensing temperature it becomes subcooled.

The subcooled high pressure liquid refrigerant now leaves the condenser coil via the liquid line until it reaches the indoor expansion device.

As the refrigerant passes through the expansion device and into the evaporator coil a pressure drop is experienced causing the refrigerant to become a low pressure liquid. Low pressure saturated refrigerant enters the evaporator coil where heat is absorbed from the warm air drawn across the coil by the evaporator blower. As the refrigerant passes through the last tubes of the evaporator coil it becomes superheated, that is, it absorbs more heat than is necessary for the refrigerant to vaporize. Maintaining proper superheat assures that liquid refrigerant is not returning to the compressor which can lead to early compressor failure.

Low pressure superheated vapor leaves the evaporator coil and returns through the suction line to the compressor where the cycle begins again.

COOLING CYCLE

Cooling Only Models

When the contacts of the room thermostat close, making terminals R to Y and R to G, the low voltage circuit to the contactor is completed starting the compressor and outdoor fan motor. This also energizes the indoor blower through the normally open contacts of the EBTDR on PSC equipped models units and through the thermostat Y terminal to the X13 motor on X13 equipped model units.

When the thermostat is satisfied, breaking the circuit between R to Y and R to G, the compressor and outdoor fan motor will stop. The indoor blower will stop after the fan off delay.

. The boiling point, at atmospheric

GPC/GPH13[24-60]M21*

If the room thermostat fan selector switch should be set to the "on" position then the indoor blower would run continuous rather than cycling with the compressor.

Heat Pump Models

Any time the room thermostat is switched to cool, the O terminal is energized. This energizes the 24 volt coil on the reversing valve and switches it to the cooling position.

When the contacts of the room thermostat close, this closes the circuit from R to Y and R to G in the unit.

This energizes the compressor contactor and will energize the indoor blower following the EBTDR 7 second fan on delay on PSC equipped model units, and instantly on models equipped with the GE X13TM motor.

When the thermostat is satisfied, it opens its contacts breaking the low voltage circuit causing the compressor contactor to open and indoor fan to stop after the EBTDR 65 second delay on PSC equipped model units, and after the programmed 60 second off delay on units with the GE X13TM motor.

If the room thermostat fan selector switch should be set to the "on" position then the indoor blower would run continuous rather than cycling with the compressor.

HEATING CYCLE

Cooling Only Units

NOTE: The following only applies if the cooling only unit has an approved electric heat kit installed for heating. If auxiliary electric heaters should be used, they may be controlled by outdoor thermostats (OT18-60A or OT/EHR18-60A).

GPC PSC Equipped Model Units

With the thermostat set to the heat position and a call for heat, R to W will be energized. This will energize the electric heat sequencers. When the normally open contacts of the heat sequencers close, this will energize the electric resistance heat and also the 240 volt coil on the isolation relay in the control panel. The normally open contacts of the isolation relay will close energizing the indoor blower motor through the normally closed contacts of the EBTDR.

GPC X13 Equipped Model Units

With the thermostat set to the heat position and a call for heat, R to W will be energized. This will energize the electric heat sequencers and the X13 indoor blower motor. When the normally open contacts of the heat sequencers close, this will energize the electric resistance heat.

SYSTEM OPERATION

GPC/GPH13[24-60]M21*

GPH13**M21* Heat Pump Units

On a call for first stage heat, the contacts of the room thermostat close. This energizes terminals R to Y and R to G, the low voltage circuit to the contactor is completed starting the compressor and outdoor fan motor. This also energizes the indoor blower through the normally open contacts of the EBTDR after a 7 second on delay on models with PSC blower motors, and instantly on models equipped with the GE X13

motor. When the thermostat is satisfied, breaking the circuit be-

tween R to Y and R to G, the compressor and outdoor fan motor will stop. The indoor blower will stop after the EBTDR 65 second off delay on models with PSC blower motors, and after the programmed 60 second off delay on models equipped with the GE X13

motor.

When auxiliary electric heaters are used, a two stage heating single stage cooling thermostat would be installed.

Should the second stage heating contacts in the room thermostat close, which would be wired to W1 at the unit low voltage connections, this would energize the coil(s) of the electric heat relay(s). Contacts within the relay(s) will close, bringing on the electric resistance heaters.

If auxiliary electric heaters should be used, they may be controlled by outdoor thermostats (OT18-60A or OT/EHR18-60A).

DEFROST CYCLE

Package Heat Pumps

The defrosting of the outdoor coil is jointly controlled by the defrost control board and the defrost thermostat.

Solid State Defrost Control

During operation the power to the circuit board is controlled by a temperature sensor, which is clamped to a feeder tube entering the outdoor coil. Defrost timing periods of 30, 60, or 90 minutes may be selected by connecting the circuit board jumper to 30, 60, or 90 respectively. Accumulation of time for the timing period selected starts when the sensor closes (approximately 34° F), and when the room thermostat calls for heat. At the end of the timing period, the unit’s defrost cycle will be initiated provided the sensor remains closed. When the sensor opens (approximately 60° F), the defrost cycle is terminated and the timing period is reset. If the defrost cycle is not terminated due to the sensor temperature, a ten minute override interrupts the unit’s defrost period.

TEST

90 60 30

JUMPER WIRE

CY W2 R R DFT

DF2

DF1

Emergency Heat Mode (Heat Pumps)

NOTE: The following only applies if the unit has an approved electric heat kit installed for auxiliary heating.

GPC/GPH PSC Equipped Models Only:

With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat sequencers. When the normally open contacts of the heat sequencers close, this will energize the electric resistance heat and also the 240 volt coil on the isolation isolation relay in the control panel. The normally open contacts of the isolation relay will close energizing the indoor blower motor through the normally closed contacts of the EBTDR.

GPC/GPH X13 Equipped Models Only:

With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat sequencers and the GE X13

motor. The electric heat will be energized through the normally open contacts of the electric heat sequencers. The indoor blower will be energized through W from the thermostat.

FAN OPERATION

Continuous Fan Mode GPC/GPH PSC Equipped Models Only:

If the thermostat calls for continuous fan, the indoor blower will be energized from the normally open contacts of the EBTDR after a 7 second delay.

Anytime there is a call for continuous fan, the indoor blower will be energized through the normally open contacts of the EBTDR, regardless of a call for heat or cool.

If the thermostat is not calling for heat or cool, and the fan switch on the thermostat is returned to the automatic position, the fan will stop after a 65 second delay.

GPC/GPH X13 Equipped Models Only:

If the thermostat calls for continuous fan, the indoor blower will be energized from the G terminal of the thermostat to the X13 blower motor.

If a call for heat or cool occurs during a continuous fan call, the GE X13TM motor will always recognize the call for the highest speed and ignore the lower speed call.

If the thermostat is not calling for heat or cool, and the fan switch on the thermostat is returned to the automatic position, the fan will stop after the programmed 60 second off delay on units with the GE X13TM motor.

SYSTEM OPERATION

GPC/GPH13[24-60]M23*

GPH13**M23* Heat Pump Units

On a call for first stage heat, the contacts of the room thermostat close. This energizes terminals R to Y and R to G, the low voltage circuit to the contactor is completed starting the compressor and outdoor fan motor. This also energizes the indoor blower through the normally open contacts of the EBTDR after a 7 second on delay on the PSC equipped model, and instantly on units with the GE X13™ motor.

When auxiliary electric heaters are used, a two stage heating single stage cooling thermostat would be installed.

If auxiliary electric heaters should be used, they may be controlled by outdoor thermostats (OT18-60A or OT/EHR1860A).

DEFROST CYCLE

Package Heat Pumps

The defrosting of the outdoor coil is jointly controlled by the defrost control board and the defrost thermostat.

Solid State Defrost Control

TEST

90 60 30

JUMPER WIRE

CY W2 R R DFT

DF2

DF1

Emergency Heat Mode (Heat Pumps)

NOTE: The following only applies if the unit has an approved electric heat kit installed for auxiliary heating.

GPC/GPH PSC Equipped Models Only:

With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat sequencer. When the normally open contacts of the heat sequencer close, this will energize the electric resistance heat and also the PSC blower motor through the normally closed contacts of the EBTDR.

GPC/GPH X13 Equipped Models Only:

With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat sequencers and the GE X13TM motor. The electric heat will be energized through the normally open contacts of the electric heat sequencers. The indoor blower will be energized through W from the thermostat.

FAN OPERATION

Continuous Fan Mode

GPC/GPH PSC Equipped Models Only:

If the thermostat calls for continuous fan, the indoor blower will be energized from the normally open contacts of the EBTDR after a 7 second delay.

Anytime there is a call for continuous fan, the indoor blower will be energized through the normally open contacts of the EBTDR, regardless of a call for heat or cool.

If the thermostat is not calling for heat or cool, and the fan switch on the thermostat is returned to the automatic position, the fan will stop after a 65 second delay.

GPC/GPH X13 Equipped Models Only:

If the thermostat calls for continuous fan, the indoor blower will be energized from the G terminal of the thermostat to the X13 blower motor.

If a call for heat or cool occurs during a continuous fan call, the GE X13 highest speed and ignore the lower speed call.

™

motor will always recognize the call for the

SYSTEM OPERATION

GPC/GPH13[24-60]M24*

GPH13**M24* Heat Pump Units

On a call for first stage heat, the contacts of the room thermostat close. This energizes terminals R to Y and R to G, the low voltage circuit to the contactor is completed starting the compressor and outdoor fan motor. This also energizes the indoor blower through the normally open contacts of the EMR and EBTDR after a 7 second on delay on the PSC equipped units, and instantly on units with the GE X13™ motor.

When the thermostat is satisfied, breaking the circuit between R to Y and R to G, the compressor and outdoor fan motor will stop. The indoor blower will stop after the EBTDR 65 second off delay on PSC equipped units, and after the programmed 60 second off delay on units with the GE X13™ motor. When auxiliary electric heaters are used, a two stage heating single stage cooling thermostat would be installed. Should the second stage heating contacts in the room thermostat close, which would be wired to W1 at the unit low voltage connections, this would energize the coil(s) of the electric heat relay(s). Contacts within the relay(s) will close, bringing on the electric resistance heaters. If auxiliary electric heaters should be used, they may be controlled by outdoor thermostats (OT18-60A or OT/EHR18-60A).

Emergency Heat Mode (Heat Pumps)

NOTE: The following only applies if the unit has an approved electric heat kit installed for auxiliary heating.

GPC/GPH PSC Equipped Models Only:

With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat sequencer. When the normally open contacts of the heat sequencer close, this will energize the PSC blower motor through the normally closed contacts of the EMR and also energize the electric heat contactor which will energize the electric resistance heat.

GPC/GPH X13 Equipped Models Only:

With the thermostat set to the emergency heat position and a call for 2nd stage heat, R to W1 will be energized. This will energize the electric heat sequencer and the GE X13TM motor. The electric heat contactor will be energized through the normally open contacts of the electric heat sequencer. The indoor blower will be energized through W from the thermostat.

DEFROST CYCLE

Package Heat Pumps

The defrosting of the outdoor coil is jointly controlled by the defrost control board and the defrost thermostat.

Solid State Defrost Control

TEST

90 60 30

JUMPER WIRE

CY W2 R R DFT

DF2

DF1

FAN OPERATION

Continuous Fan Mode

GPC/GPH PSC Equipped Models Only:

If the thermostat calls for continuous fan, the indoor blower will be energized from the normally open contacts of the EMR which is energized through the normally open contacts of the EBTDR after a 7 second delay.

Anytime there is a call for continuous fan, the indoor blower will be energized through the normally open contacts of the EMR which is energized through the normally open contacts of the EBTDR, regardless of a call for heat or cool.

If the thermostat is not calling for heat or cool, and the fan switch on the thermostat is returned to the automatic position, the fan will stop after a 65 second delay.

GPC/GPH X13 Equipped Models Only:

If the thermostat calls for continuous fan, the indoor blower will be energized from the G terminal of the thermostat to the X13 blower motor.

If a call for heat or cool occurs during a continuous fan call, the GE X13TM motor will always recognize the call for the highest speed and ignore the lower speed call

SYSTEM OPERATION

Typical Package Cooling

Indoor

Coil

Restrictor Orifice Assembly in Cooling Operation

Outdoor

Coil

Chatleff

Orifice

Assy

In the cooling mode the orifice is pushed into its seat forcing refrigerant to flow through the metered hole in the center of the orifice.

SYSTEM OPERATION

Typical Heat Pump System in Cooling

Reversing Valve

(Energized)

Indoor

Coil

Accumulator

Typical Heat Pump System in Heating

Outdoor

Coil

Indoor

Coil

Reversing Valve

(De-Energized)

Outdoor

Coil

Accumulator

SCHEDULED MAINTENANCE

The owner should be made aware of the fact, that, as with any mechanical equipment, Package Cooling and Heat Pump units require regularly scheduled maintenance to preserve high performance standards, prolong the service life of the equipment, and lessen the chances of costly failure.

In many instances the owner may be able to perform some of the maintenance; however, the advantage of a service contract, which places all maintenance in the hands of a trained serviceman, should be pointed out to the owner.

WARNING

ONCE A MONTH

1. Inspect the return filters of the evaporator unit and clean or change if necessary.

NOTE: Depending on operation conditions, it may be necessary to clean the filters more often. If permanent type filters are used, they should be washed with warm water, dried and sprayed with an adhesive according to manufacturers recommendations.

2. When operating on the cooling cycle, inspect the condensate line piping from the evaporator coil. Make sure the piping is clear for proper condensate flow.

ONCE A YEAR

Qualified Service Personnel Only

1. Clean the indoor and outdoor coils.

2. Clean the casing of the outdoor unit inside and out .

3. Motors are permanently lubricated and do not require oiling. TO AVOID PREMATURE MOTOR FAILURE, DO NOT OIL.

4. Manually rotate the outdoor fan and indoor blower to be sure they run freely.

5. Inspect the control panel wiring, compressor connections, and all other component wiring to be sure all connections are tight. Inspect wire insulation to be certain that it is good.

6. Check the contacts of the compressor contactor. If they are burned or pitted, replace the contactor.

7. Using a halide or electronic leak detector, check all piping and etc. for refrigerant leaks.

8. Check the combustion chamber (Heat Exchanger) for soot, scale, etc. Inspect all burners for lint and proper positioning.

9. Start the system, using the proper instrumentation check gas inlet and manifold pressures, burner flame and microamp signal. Adjust if necessary.

10.Start the system and run both a Cooling & Heating Performance Test. If the results of the test are not satisfactory, see the "Service Problem Analysis" Chart of the possible cause.

TEST EQUIPMENT

Proper test equipment for accurate diagnosis is as essential as regular hand tools.

The following is a must for every service technician and service shop:

1. Thermocouple type temperature meter - measure dry bulb temperature.

2. Sling psychrometer- measure relative humidity and wet bulb temperature.

3. Amprobe - measure amperage and voltage.

4. Volt-Ohm Meter - testing continuity, capacitors, and motor windings.

5. Accurate Leak Detector - testing for refrigerant leaks.

6. High Vacuum Pump - evacuation.

7. Electric Vacuum Gauge, Manifold Gauges and high vacuum hoses - to measure and obtain proper vacuum.

8. Accurate Electronic Scale - measure proper refrigerant charge.

9. Inclined Manometer - measure static pressure and pressure drop across coils.

Other recording type instruments can be essential in solving abnormal problems, however, in many instances they may be rented from local sources.

Proper equipment promotes faster, more efficient service, and accurate repairs with less call backs.

SERVICING

COOLING /HEAT PUMP- SERVICE ANALYSIS GUIDE

Complaint

POSSIBLE CAUSE

DOTS IN ANALYSIS

GUIDE INDICATE

"POSSIBLE CAUSE"

Power Failure Blown Fuse Unbalanced Power, 3PH Loose Connect ion Shorted or Broken Wires Open Fan Overlo ad Faulty Thermostat Faulty Transformer Shorted or Open Capacitor Internal Compressor Overload Open Shorted or Grounded Compressor Compressor Stuck Faulty Compressor Contactor Faulty Fan Control Open Control Circuit Low Voltage Faulty Evap. Fan Motor Shorted or Grounded Fan Motor Improper Cooling Anticipator Shortage of Refrigerant Restricted Liquid Line Open Element or Limit on Elec. Heater Dirty Air Filter Dirty Indoor Coil Not enough air across Indoor Coil Too much air across Indoor Coil Overcharge of Refri ge rant Dirty Outdoor Coil Noncondensibles Recirculation of Condensing Air Infiltration of Outdoor Air Improperly Located Thermostat Air Flow Unbalanced System Undersized Broken Internal Parts Broken Val ves Inefficient Compressor Loose Hold-down Bolts Faulty Reversing Valve Faulty Defrost Control Faulty Defrost Thermostat Flowrator Not Seating Properly

SYMPTOM

No Cooling Unsatisfactory Cooling/Heating

System will not start

Compressor will not start - fan runs

Comp. and Cond. Fan will not start

Evaporator fan will not start

Condenser fan will not start

Compresso r runs - goes off on ov erload

Compressor cycles on overload

System runs continuously - little cooling/htg

Too cool and then too warm

Not cool eno ugh on warm days

Certain area s too cool, others t oo warm

Compressor is noisy

System runs - blows cold air in heating

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Cooling or Heating Cycle (Heat Pump) Heating Cycle Only (Heat Pump)

•

System Operating Pressures

Test Method

Remedy

See Service Proce dure Ref.

Unit will not terminate defrost

Unit will not defrost

Low suction pressure

Low head pressure

High suction pressure

High head pres sure

Test Voltage S-1 Inspect Fuse Size & Type S-1 Test Voltage S-1 Inspect Connection - Tighten S-2, S-3 Test Circuits With Ohmmeter S-2, S-3 Test Continuity of Overload S-17A Test continuity of Thermostat & Wiring S-3 Check control circuit with voltmeter S-4 Test Capacitor S-15 Test Continuity of Overload S-17A Test Motor Windings S -17B Use Test Cord S-17D Test continuity of Coil & Contacts S-7, S-8 Test continuity of Coil And Contacts S-7, S-9 Test Control Circuit with Voltmeter S-4 Test Voltage S-1 Repair or Replace S-16

♦

Test Motor Windings S-16A,D Check resistance of Anticipator S-3B

••

♦

••

♦

Test For Lea ks, Add Refrigerant S-101,103 Remove Restr iction, Replace Restricted Part S-112 Test Heater Element and Controls S-26,S-27 Inspect Filter-Clean or Replace

♦

Inspect Coil - Clean

♦

Check Blower Speed, Duct Static Press, Filter S-200

♦

Reduce Blower S peed S-200

•

Recover Part of Charge S-113

••

Inspect Coil - Clean

•

Recover Charge, Evacuate, Recharge S-114

•

Remove Obst ruction to Air Flow Check Windows, Doors, Vent Fans, Etc. Relocate Thermostat Readjust Air Volume Dampers Refigure Cooling Load Replace Comp ressor S-115 Test Compressor Efficiency S-104 Test Compressor Efficiency S-104 Tighten Bolts Replace Valve or Solenoid S-21, 122 Test Control S-24 Test Defrost Thermostat S-25 Check Flowrator & Seat or Replace Flowrator S-111

3-Phase Only

√

SERVICING

S-1 CHECKING VOLTAGE

WARNING

1. Remove doors, control panel cover, etc. from unit being tested.

With power ON:

WARNING

LINE VOLTAGE NO W PRES ENT.

2. Using a voltmeter, measure the voltage across terminals L1 and L2 of the contactor for single phase units, and L3, for 3 phase units.

3. No reading - indicates open wiring, open fuse(s) no power or etc. from unit to fused disconnect service. Repair as needed.

4. With ample voltage at line voltage connectors, energize the unit.

5. Measure the voltage with the unit starting and operating, and determine the unit Locked Rotor Voltage.

Locked Rotor Voltage is the actual voltage available at the compressor during starting, locked rotor, or a stalled condition. Measured voltage should be above minimum listed in chart below.

To measure Locked Rotor Voltage attach a voltmeter to the run "R" and common "C" terminals of the compressor, or to the T1 and T2 terminals of the contactor. Start the unit and allow the compressor to run for several seconds, then shut down the unit. Immediately attempt to restart the unit while measuring the Locked Rotor Voltage.

6. Should read within the voltage tabulation as shown. If the voltage falls below the minimum voltage, check the line wire size. Long runs of undersized wire can cause low voltage. If wire size is adequate, notify the local power company in regards to either low or high voltage.

Unit Supply Voltage

Voltage Min. Max.

460 437 506

208/230 198 253

Three phase units require a balanced 3 phase power supply to operate. If the percentage of voltage imbalance exceeds 3% the unit must not be operated until the voltage condition is corrected.

Max. Voltage Deviation % Voltage = Imbalance Average Voltage

To find the percentage of imbalance, measure the incoming power supply.

L1 - L2 = 240V L1 - L3 = 232V Avg. V = 710 = 236.7 L2 - L3 = 238V 3 Total 710V

To find Max. deviation: 240 - 236.7 = +3.3

Max deviation was 4.7V % Voltage Imbalance = 4.7 = 1.99%

If the percentage of imbalance had exceeded 3%, it must be determined if the imbalance is in the incoming power supply or the equipment. To do this rotate the legs of the incoming power and retest voltage as shown below.

By the voltage readings we see that the imbalance rotated or traveled with the switching of the incoming legs. Therefore the power lies within the incoming power supply.

If the imbalance had not changed then the problem would lie within the equipment. Check for current leakage, shorted motors, etc.

From Average Voltage X 100

232 - 236.7 = -4.7 238 - 236.7 = +1.3

236.7

L1 - L2 = 240V L1 - L3 = 227V L2 - L3 = 238V

L3L2

Rotate all 3 incoming legs as shown.

L1 - L2 = 227V L1 - L3 = 238V L2 - L3 = 240V

SERVICING

S-2 CHECKING WIRING

WARNING

1. Check wiring visually for signs of overheating, damaged insulation and loose connections.

2. Use an ohmmeter to check continuity of any suspected open wires.

3. If any wires must be replaced, replace with comparable gauge and insulation thickness.

S-3 CHECKING THERMOSTAT, WIRING, AND ANTICIPATOR

S-3A THERMOSTAT AND WIRING

WARNING

LINE V OLT AG E NOW PR ES ENT .

With power ON and thermostat calling for cooling.

1. Use a voltmeter to verify 24 volts present at thermostat wires C and R.

2. If no voltage present, check transformer and transformer wiring. If 24 volts present, proceed to step 3.

3. Use a voltmeter to check for 24 volts at thermostat wires C and Y.

4. No voltage indicates trouble in the thermostat, wiring or external transformer source.

5. Check the continuity of the thermostat and wiring. Repair or replace as necessary.

5. No voltage, indicates the trouble is in the thermostat or wiring.

6. Check the continuity of the thermostat and wiring. Repair or replace as necessary.

S-3B COOLING ANTICIPATOR

The cooling anticipator is a small heater (resistor) in the thermostat. During the "off" cycle it heats the bimetal element helping the thermostat call for the next cooling cycle. This prevents the room temperature from rising too high before the system is restarted. A properly sized anticipator should maintain room temperature within 1 1/2 to 2 degree range.

The anticipator is supplied in the thermostat and is not to be replaced. If the anticipator should fail for any reason, the thermostat must be changed.

S-3C HEATING ANTICIPATOR

The heating anticipator is a wire-wound adjustable heater, which is energized during the "ON" cycle to help prevent overheating of the conditioned space.

The anticipator is a part of the thermostat and if it should fail for any reason, the thermostat must be replaced. See the following for recommended heater anticipator setting.

To determine the proper setting, use an amp meter to measure the amperage on the "W" wire going to the thermostat.

Use an amprobe as shown below. Wrap 10 turns of thermostat wire around the stationary jaw of the amprobe and divide the reading by 10.

10 TURNS OF THERMOSTAT WIRE (From "W" on thermostat)

STATIONARY JAW OF AMPROBE

Indoor Blower Motor

With power ON:

WARNING

LINE V OLT AG E NOW PR ES ENT .

1. Use a voltmeter to verify 24 volts present at thermostat wires C and R.

2. If no voltage present, check transformer and transformer wiring. If 24 volts present, proceed to step 3.

3. Set fan selector switch at thermostat to "ON" position.

4. With voltmeter, check for 24 volts at wires C and G.

READS 4 AMPS CURRENT DRAW WOULD BE .4 AMPS

Checking Heat Anticipator Amp Draw

SERVICING

S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT

A step-down transformer (208/240 volt primary to 24 volt secondary) is provided with each package unit. This allows ample capacity for use with resistance heaters.

WARNING

1. Remove control panel cover or etc. to gain access to transformer.

With power ON:

WARNING

LINE V OLT AG E NOW PR ES ENT .

S-8 CHECKING CONTACTOR CONTACTS

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

SINGLE PHASE

1. Disconnect the wire leads from the terminal (T) side of the contactor.

2. With power ON, energize the contactor.

WARNING

LINE VOLTAGE NOW PRES ENT.

2. Using a voltmeter, check voltage across secondary voltage side of transformer (R to C).

3. No voltage indicates faulty transformer, bad wiring, or bad splices.

4. Check transformer primary voltage at incoming line voltage connections and/or splices.

5 If line voltage is present at the primary voltage side of the

transformer and 24 volts is not present on the secondary side, then the transformer is inoperative. Replace.

S-7 CHECKING CONTACTOR AND/OR RELAYS

The compressor contactor and other relay holding coils are wired into the low or line voltage circuits. When the control circuit is energized the coil pulls in the normally open contacts or opens the normally closed contacts. When the coil is deenergized, springs return the contacts to their normal position.

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

1. Remove the leads from the holding coil.

2. Using an ohmmeter, test across the coil terminals.

If the coil does not test continuous, replace the relay or contactor.

VOLT/OHM

METER

L1L2

Ohmmeter for te sting holding coil Voltmeter for testing contacts

TESTING COMPRESSOR CONTACTOR

(Single Phase)

3. Using a voltmeter, test across terminals. A. L1 to L2 - No voltage. Check breaker or fuses on main

power supply. If voltage present, proceed to step B.

B. T1 to T2 - Meter should read the same as L1 to L2 in

step A. If voltage readings are not the same as step A, replace contactor.

THREE PHASE

Using a voltmeter, test across terminals:

A. L1-L2, L1-L3, and L2-L3 - If voltage is present, pro-

ceed to B. If voltage is not present, check breaker or fuses on main power supply..

B. T1-T2, T1-T3, and T2-T3 - If voltage readings are not

the same as in "A", replace contactor.

SERVICING

VOLT/OHM

METER

Ohmmeter for testing holding coil Voltmeter for testing contacts

TESTING COMPRESSOR CONTACTOR

(Three-phase)

T3L3T2

5. Using a VOM, check for line voltage from the purple wire at the transformer (terminal 3 on 240 volt units, terminal 2 on 208 volt units) to the COM terminal on the EBTDR. Should read line voltage. If not as above, replace EBTDR.

PSC equipped, single phase model coolers and heat pumps have an isolation relay with a 240 volt holding coil in addition to the EBTDR.

WARNING

DISCONNECT POWER SUPPLY BEF ORE SERVICING.

S-9 CHECKING FAN RELAY CONTACTS

The Electronic Blower Time Delay Relay is used on the PSC equipped, single phase models.

WARNING

Checking EBTDR High Voltage Contacts

1. With power off, remove wires from terminals NC, COM, and NO.

2. Using a VOM, check for resistance from NO to COM. Should read open. Next, check for resistance from NC to COM. Should read closed.

3. If not as above, replace EBTDR.

Checking EBTDR Contact Operation

With power on:

WARNING

LINE V OLTAG E NO W PRES EN T.

1. Set the thermostat to the fan "on" position.

2. Check for 24 volts at the C and G terminals of the EBTDR.

3. If no voltage present, check fan circuit from thermostat. If 24 volts present, proceed to step 4.

4. Using a VOM, check for line voltage from the purple wire at the transformer (terminal 3 on 240 volt units, terminal 2 on 208 volt units) to terminal NO on the EBTDR. Should read line voltage. If no voltage present, check line voltage wiring in unit. If line voltage present, proceed to step 5.

Turn power off.

Testing relay holding coil

1. Remove the leads from the holding coil terminals 1 and 3.

2. Using an ohmmeter, test across the coil terminals 1 and 3. If the coil does not test continuous, replace the relay.

Testing relay contacts

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

Turn power off.

1. Using a VOM, test resistance across relay terminals 2 and

4. Should read open.

2. Turn power on.

WARNING

LINE VOLTAGE NOW PRESENT.

3. Apply 240 volts to coil terminals 1 and 3.

4. Using a VOM, check for 240 volts from terminals 3 and 1 of relay. Should read 240 volts. In no voltage, check wiring from heater kit to relay. If voltage present, proceed to step

5. Using a VOM, check for 240 volts from L1 at contactor to terminal 4 of relay. Should read 240 volts. Next check from L1 at contactor to terminal 2 of relay. Should read 240 volts.

If not as above, replace relay. On the 5 ton units with the GE X13

relay is used.

motor, a standard fan

SERVICING

S-15 CHECKING CAPACITOR

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

Turn power off.

Testing relay holding coil

1. Remove the leads from the holding coil.

2. Using an ohmmeter, test across the coil terminals 1 and 3. If the coil does not test continuous, replace the relay.

Testing relay contacts

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

Turn power off.

1. Using a VOM, test resistance across relay terminals 2 and

4. Should read open.

2. Turn power on.

WARNING

LINE VOLTAGE NOW PRES ENT.

3. Apply 24 volts to coil terminals 1 and 3.

4. Using a VOM, check for 24 volts from terminals 3 and 2 of relay. Should read 24 volts. If no voltage, check low voltage wiring from transformer to relay. If voltage present, proceed to step 5.

5. Using a VOM, check for 24 volts from terminals 3 and 4 of relay. Should read 24 volts.

If not as above, replace relay.

S-11 CHECKING LOSS OF CHARGE PROTECTOR

(Heat Pump Models)

The loss of charge protector senses the pressure in the liquid line and will open its contacts on a drop in pressure. The low pressure control will automatically reset itself with a rise in pressure.

The low pressure control is designed to cut-out (open) at approximately 7 PSIG. It will automatically cut-in (close) at approximately 25 PSIG.

Test for continuity using a VOM and if not as above, replace the control.

CAPACITOR, RUN

A run capacitor is wired across the auxiliary and main windings of a single phase permanent split capacitor motor. The capacitors primary function is to reduce the line current while greatly improving the torque characteristics of a motor. This is accomplished by using the 90° phase relationship between the capacitor current and voltage in conjunction with the motor windings so that the motor will give two phase operation when connected to a single phase circuit. The capacitor also reduces the line current to the motor by improving the power factor.

CAPACITOR, START SCROLL COMPRESSOR MODELS

Hard start components are not required on Scroll compressor equipped units due to a non-replaceable check valve located in the discharge line of the compressor. However hard start kits are available and may improve low voltage starting characteristics.

This check valve closes off high side pressure to the compressor after shut down allowing equalization through the scroll flanks. Equalization requires only about one or two seconds during which time the compressor may turn backwards.

Your unit comes with a 180-second anti-short cycle to prevent the compressor from starting and running backwards.

MODELS EQUIPPED WITH A HARD START DEVICE

A start capacitor is wired in parallel with the run capacitor to increase the starting torque. The start capacitor is of the electrolytic type, rather than metallized polypropylene as used in the run capacitor.

A switching device must be wired in series with the capacitor to remove it from the electrical circuit after the compressor starts to run. Not removing the start capacitor will overheat the capacitor and burn out the compressor windings.

These capacitors have a 15,000 ohm, 2 watt resistor wired across its terminals. The object of the resistor is to discharge the capacitor under certain operating conditions, rather than having it discharge across the closing of the contacts within the switching device such as the Start Relay, and to reduce the chance of shock to the servicer. See the Servicing Section for specific information concerning capacitors.

RELAY, START

A potential or voltage type relay is used to take the start capacitor out of the circuit once the motor comes up to speed. This type of relay is position sensitive. The normally closed contacts are wired in series with the start capacitor and the relay holding coil is wired parallel with the start winding. As the motor starts and comes up to speed, the increase in voltage across the start winding will energize the start relay holding coil and open the contacts to the start capacitor.

Two quick ways to test a capacitor are a resistance and a capacitance check.

SERVICING

S-15A RESISTANCE CHECK

WARNING

1. Discharge capacitor and remove wire leads.

WARNING

DISCHARGE CAPACITOR THROUGH A 20 TO 30 OHM RESISTOR BEFORE HANDLING.

Using a hookup as shown below, take the amperage and voltage readings and use them in the formula:

Capacitance (MFD) =

Volt / Ohm Meter

AMMETER

2650 X Amperage

Voltage

15 AMP FUSE

TESTING CAPACITANCE

S-16 CHECKING MOTORS S-16A CHECKING FAN AND BLOWER MOTOR

WINDINGS (PSC MOTORS)

Volt / Ohm Meter

cito

Cap

TESTING CAPACITOR RESISTANCE

2. Set an ohmmeter on its highest ohm scale and connect the leads to the capacitor -

A. Good Condition - indicator swings to zero and slowly returns to infinity. (Start capacitor will bleed resistor will not return to infinity. It will still read the resistance of the resistor).

B. Shorted - indicator swings to zero and stops there replace.

C. Open - no reading - replace. (Start capacitor would read resistor resistance).

S-15B CAPACITANCE CHECK

WARNING

DISCHARGE CAPACITOR THROUGH A 20 TO 30 OHM RESISTOR BEFORE HANDLING.

The auto reset fan motor overload is designed to protect the motor against high temperature and high amperage conditions by breaking the common circuit within the motor, similar to the compressor internal overload. However, heat generated within the motor is faster to dissipate than the compressor, allow at least 45 minutes for the overload to reset, then retest.

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

1. Remove the motor leads from its respective connection points and capacitor (if applicable).

2. Check the continuity between each of the motor leads.

3. Touch one probe of the ohmmeter to an unpainted end of the motor frame (ground) and the other probe in turn to each lead.

If the windings do not test continuous or a reading is obtained from any lead to ground, replace the motor.

S-16D CHECKING GE X13TM MOTORS

The GE X13TM Motor is a one piece, fully encapsulated, 3 phase brushless DC (single phase AC input) motor with ball bearing construction. Unlike the ECM 2.3/2.5 motors, the GE X13 features an integral control module.

Note: The GE TECMate will not currently operate the GE X13 motor.

1. Using a voltmeter, check for 230 volts to the motor connections L and N. If 230 volts is present, proceed to step 2. If 230 volts is not present, check the line voltage circuit to the motor.

SERVICING

2. Using a voltmeter, check for 24 volts from terminal C to either terminal 1, 2, 3, 4, or 5, depending on which tap is being used, at the motor. If voltage present, proceed to step 3. If no voltage, check 24 volt circuit to motor.

3. If voltage was present in steps 1 and 2, the motor has failed and will need to be replaced.

Note: When replacing motor, ensure the belly band is between the vents on the motor and the wiring has the proper drip loop to prevent condensate from entering the motor.

High Voltage

Connections

3/16"

123

Low Voltage Connections

LGN

This discharge can be ignited external to the compressor if the terminal cover is not properly in place and if the discharge impinges on a sufficient heat source.

Ignition of the discharge can also occur at the venting terminal or inside the compressor, if there is sufficient contaminant air present in the system and an electrical arc occurs as the terminal vents.

Ignition cannot occur at the venting terminal without the presence of contaminant air, and cannot occur externally from the venting terminal without the presence of an external ignition source.

Therefore, proper evacuation of a hermetic system is essential at the time of manufacture and during servicing.

To reduce the possibility of external ignition, all open flame, electrical power, and other heat sources should be extinguished or turned off prior to servicing a system.

If the following test indicates shorted, grounded or open windings, see procedure S-19 for the next steps to be taken.

S-17A RESISTANCE TEST

Each compressor is equipped with an internal overload. The line break internal overload senses both motor amperage

and winding temperature. High motor temperature or amperage heats the disc causing it to open, breaking the common circuit within the compressor on single phase units. The three phase internal overload will open all three legs.

Heat generated within the compressor shell, usually due to recycling of the motor, high amperage or insufficient gas to cool the motor, is slow to dissipate, allow at least three to four hours for it to cool and reset, then retest.

1/4”

GE X13TM MOTOR CONNECTIONS

S-17 CHECKING COMPRESSOR WINDINGS

WARNING

HERMETIC COMPRESSOR ELECTRICAL TERMINAL VENTING CAN BE DANGEROUS. WHEN INSULATING MATERIAL WHICH SUPPORTS A HERMETIC COMPRESSOR OR ELECTRICAL TERMINAL SUDDENLY DISINTEGRATES DUE TO PHYSICAL ABUSE OR AS A RESULT OF AN EL ECTR ICAL SH ORT BE TWEEN THE TERMINAL AND THE COMPRESSOR HOUSING, THE TERMINAL MAY B E EXPEL LED, V ENTING THE VAPOR AND LIQUID CONTENTS OF THE COMPRESSOR HOUSING AND SYSTEM.

If the compressor terminal PROTECTIVE COVER and gasket (if required) is not properly in place and secured, there is a remote possibility if a terminal vents, that the vaporous and liquid discharge can be ignited, spouting flames several feet, causing potentially severe or fatal injury to anyone in its path.

WARNING

1. Remove the leads from the compressor terminals.

WARNING

SEE WARNINGS S-17 BEFORE REMOVING COMPRESSOR TERMINAL COVER.

2. Using an ohmmeter, test continuity between terminals SR, C-R, and C-S, on single phase units or terminals T1, T2 and T3, on 3 phase units.

SERVICING

OHMMETER

TESTING COMPRESSOR WINDINGS

If either winding does not test continuous, replace the compressor.

NOTE: If an open compressor is indicated allow ample time for the internal overload to reset before replacing compressor.

COMP

S-17B GROUND TEST

If fuse, circuit breaker, ground fault protective device, etc., has tripped, this is a strong indication that an electrical problem exists and must be found and corrected. The circuit protective device rating must be checked and its maximum rating should coincide with that marked on the equipment nameplate.

With the terminal protective cover in place, it is acceptable to replace the fuse or reset the circuit breaker to see if it was just a nuisance opening. If it opens again, DO NOT continue to reset.

Disconnect all power to unit, making sure that all power legs are open.

1. DO NOT remove protective terminal cover. Disconnect the three leads going to the compressor terminals at the nearest point to the compressor.

ONE TIME ONLY

WARNING

DAMAGE CAN OCCUR TO THE GLASS EMBEDDED TERMINALS IF THE LEADS ARE NOT PROPERLY REMOVED. THIS CAN RESULT IN TERMINAL AND HOT OIL DISCHARGING.

3. If a ground is indicated, then carefully remove the compressor terminal protective cover and inspect for loose leads or insulation breaks in the lead wires.

4. If no visual problems indicated, carefully remove the leads at the compressor terminals.

Carefully retest for ground, directly between compressor terminals and ground.

5. If ground is indicated, replace the compressor.

S-17D OPERATION TEST

If the voltage, capacitor, overload and motor winding test fail to show the cause for failure:

WARNING

1. Remove unit wiring from disconnect switch and wire a test cord to the disconnect switch.

NOTE: The wire size of the test cord must equal the line wire size and the fuse must be of the proper size and type.

2. With the protective terminal cover in place, use the three leads to the compressor terminals that were disconnected at the nearest point to the compressor and connect the common, start and run clips to the respective leads.

3. Connect good capacitors of the right MFD and voltage rating into the circuit.

4. With power ON, close the switch.

WARNING

HI-POT

COMPRESSOR GROUND TEST

2. Identify the leads and using a Megger, Hi-Potential Ground Tester, or other suitable instrument which puts out a voltage between 300 and 1500 volts, check for a ground separately between each of the three leads and ground (such as an unpainted tube on the compressor). Do not use a low voltage output instrument such as a volt-ohmmeter.

LINE VOLTAGE NOW PRESENT.

A. If the compressor starts and continues to run, the

cause for failure is somewhere else in the system.

B. If the compressor fails to start - replace.

S-18 TESTING CRANKCASE HEATER

Note: Not all compressors use crankcase heaters.

The crankcase heater must be energized a minimum of four (4) hours before the compressor is operated.

Crankcase heaters are used to prevent migration or accumulation of refrigerant in the compressor crankcase during the off cycles and prevents liquid slugging or oil pumping on start up. Scroll Compressors are not equipped with a crankcase heaters.

A crankcase heater will not prevent compressor damage due to a floodback or over charge condition.

SERVICING

WARNING

DISCONNECT POWER SUPPLY BEFORE SERVICING.

1. Disconnect the heater lead wires.

2. Using an ohmmeter, check heater continuity - should test continuous, if not, replace.

S-21 CHECKING REVERSING VALVE AND SOLENOID

Occasionally the reversing valve may stick in the heating or cooling position or in the mid-position.

When stuck in the mid-position, part of the discharge gas from the compressor is directed back to the suction side, resulting in excessively high suction pressure. An increase in the suction line temperature through the reversing valve can also be measured. Check operation of the valve by starting the system and switching the operation from COOLING to HEATING cycle.

If the valve fails to change its position, test the voltage (24V) at the valve coil terminals, while the system is on the COOLING cycle.

If no voltage is registered at the coil terminals, check the operation of the thermostat and the continuity of the connecting wiring from the "O" terminal of the thermostat to the unit.

If voltage is registered at the coil, tap the valve body lightly while switching the system from HEATING to COOLING, etc. If this fails to cause the valve to switch positions, remove the coil connector cap and test the continuity of the reversing valve solenoid coil. If the coil does not test continuous - replace it.

If the coil test continuous and 24 volts is present at the coil terminals, the valve is inoperative - replace it.

S-24 TESTING DEFROST CONTROL

To check the defrost control for proper sequencing, proceed as follows: With power ON; unit not running.

1. Jumper defrost thermostat by placing a jumper wire across the terminals "DFT" and "R" at defrost control board.

2. Connect jumper across test pins on defrost control board.

3. Set thermostat to call for heating. System should go into defrost within 21 seconds.

4. Immediately remove jumper from test pins.

5. Using VOM check for voltage across terminals "C & O". Meter should read 24 volts.

6. Using VOM check for voltage across fan terminals DF1 and DF2 on the board. You should read line voltage (208230 VAC) indicating the relay is open in the defrost mode.

7. Using VOM check for voltage across "W2 & C" terminals on the board. You should read 24 volts.

8. If not as above, replace control board.

9. Set thermostat to off position and disconnect power before removing any jumpers or wires.

NOTE: Remove jumper across defrost thermostat before returning system to service.

S-25 TESTING DEFROST THERMOSTAT

1. Install a thermocouple type temperature test lead on the tube adjacent to the defrost control. Insulate the lead point of contact.

2. Check the temperature at which the control closes its contacts by lowering the temperature of the control. Part # 0130M00009P which is used on 2 and 2.5 ton units should close at 34°F ± 5°F.

3. Check the temperature at which the control opens its contacts by raising the temperature of the control. Part # 0130M00009P which is used on 2 and 2.5 ton units should open at 60°F ± 5°F.

4. If not as above, replace control.

S-50 CHECKING HEATER LIMIT CONTROL(S)

(OPTIONAL ELECTRIC HEATERS)

Each individual heater element is protected with an automatic rest limit control connected in series with each element to prevent overheating of components in case of low airflow. This limit control will open its circuit at approximately 150°F. to 160°F and close at approximately 110°F.

WARNING

DISCONNECT ELECTRI CAL PO WER SUPPLY.

1. Remove the wiring from the control terminals.

2. Using an ohmmeter test for continuity across the normally closed contacts. No reading indicates the control is open

- replace if necessary. Make sure the limits are cool before testing.

IF FOUND OPEN - REPLACE - DO NOT WIRE AROUND.

S-52 CHECKING HEATER ELEMENTS

Optional electric heaters may be added, in the quantities shown in the spec sheet for each model unit, to provide electric resistance heating. Under no condition shall more heaters than the quantity shown be installed.

WARNING

SERVICING

1. Disassemble and remove the heating element(s).

2. Visually inspect the heater assembly for any breaks in the wire or broken insulators.

3. Using an ohmmeter, test the element for continuity - no reading indicates the element is open. Replace as necessary.

S-100 REFRIGERATION REPAIR PRACTICE

DANGER

ALWAYS REMOVE THE REFRIGERANT CHARGE IN A PROPER MANNER BEFORE APPLYING HEAT TO THE SYSTEM.

These models use the FasTest Access Fitting System, with a saddle that is either soldered to the suction and liquid lines or is fastened with a locking nut to the access fitting box (core) and then screwed into the saddle. Do not remove the core

from the saddle until the refrigerant charge has been removed. Failure to do so could result in property damage or personal injury.

When installing a new core or reinstalling the core after removal, it is very important to note that before inserting the core into the saddle, the core and saddle must be free of debris and the “O” Ring must have a thin coating of refrigerant oil applied to it. The oil is to prevent the “O” Ring from being deformed when the core is tightened completely. The core should be torqued to 8 ft. lb.

When repairing the refrigeration system:

1. Never open a system that is under vacuum. Air and moisture will be drawn in.

2. Plug or cap all openings.

3. Remove all burrs and clean the brazing surfaces of the tubing with sand cloth or paper. Brazing materials do not flow well on oxidized or oily surfaces.

4. Clean the inside of all new tubing to remove oils and pipe chips.

5. When brazing, sweep the tubing with dry nitrogen to prevent the formation of oxides on the inside surfaces.

6. Complete any repair by replacing the liquid line drier in the system, evacuate and charge.

At any time the system has been open for repair, the factory installed liquid line filter drier must be replaced.

S-101 LEAK TESTING

Refrigerant leaks are best detected with a halide or electronic leak detector.

However, on outdoor installed systems, provisions must be made to shield the copper element of an halide torch from the sun and wind conditions in order to be able to see the element properly.

NOTE: The flame of the halide detector will glow green in the presence of R-22 refrigerant.

For a system that contains a refrigerant charge and is suspected of having a leak, stop the operation and hold the exploring tube of the detector as close to the tube as possible, check all piping and fittings. If a leak is detected, do not attempt to apply more brazing to the joint. Remove and capture the charge, unbraze the joint, clean and rebraze.

For a system that has been newly repaired and does not contain a charge, connect a cylinder of refrigerant, through a gauge manifold, to the liquid and suction line dill valves and/or liquid line dill valve and compressor process tube.

NOTE: Refrigerant hoses must be equipped with dill valve depressors or special adaptor used. Open the valve on the cylinder and manifold and allow the pressure to build up within the system. Check for and handle leaks, as described above. After the test has been completed, remove and capture the leak test refrigerant.

S-102 EVACUATION

This is the most important part of the entire service procedure. The life and efficiency of the equipment is dependent upon the thoroughness exercised by the serviceman when evacuating air (non-condensable) and moisture from the system.

Air in a system causes high condensing temperature and pressure, resulting in increased power input and reduced performance.

Moisture chemically reacts with the refrigerant and oil to form corrosive hydrofluoric and hydrochloric acids. These attack motor windings and parts, causing breakdown.

The equipment required to thoroughly evacuate the system is a high vacuum pump, capable of producing a vacuum equivalent to 25 microns absolute and a thermocouple vacuum gauge to give a true reading of the vacuum in the system

NOTE: Never use the system compressor as a vacuum pump or run when under a high vacuum. Motor damage could occur.

BRAZING MATERIALS

Copper to Copper Joints - Sil-Fos used without flux (alloy of 15% silver, 80% copper, and 5% phosphorous). Recommended heat 1400°F.

Copper to Steel Joints - Silver Solder used without a flux (alloy of 30% silver, 38% copper, 32% zinc). Recommended heat - 1200°F.

SERVICING

WARNING

SCROLL COMPRESSORS DO NOT FRONT SEA T TH E SERVICE VALVE(S) WITH THE COMPRESSOR OPERATING IN AN ATTEMPT TO SAVE REFRIGERANT. WITH THE SUCTION LINE OF THE COMPRESSOR CLOSED OR SEVERLY RESTRICTED, THE SCROLL COMPRESSOR WILL DRAW A DEEP VACUUM VERY QUICKLY. THIS VACUUM CAN CAUSE INTERNAL ARCING OF THE FUSITE RESULTING IN A DAMAGED OR FAILED COMPRESSOR.

R-22

MANIFOLD

LOW SIDE

GAUGE

AND VALVE

800 PSI

RATED

HOSES

{

TO UNIT SERVICE VALVE PORTS

1. Connect the vacuum pump, vacuum tight manifold set with high vacuum hoses, thermocouple vacuum gauge and charging cylinder as shown.

2. If the service dill valves are to be used for evacuation, it is recommended that a core remover be used to lift the core for greater efficiency.

3. Start the vacuum pump and open the shut off valve to the high vacuum gauge manifold only. After the compound gauge (low side) has dropped to approximately 29 inches of vacuum, open the valve to the vacuum thermocouple gauge. See that the vacuum pump will blank-off to a maximum of 25 microns. A high vacuum pump can only produce a good vacuum if its oil is non-contaminated.

4. If the vacuum pump is working properly, close the valve to the vacuum thermocouple gauge and open the high and low side valves to the high vacuum manifold set. With the valve on the charging cylinder closed, open the manifold valve to the cylinder.

HIGH SIDE

GAUGE

AND VALVE

CHARGING CYLINDER

AND SCALE

VACUUM PUMP

ADAPTER

VACUUM PUMP

5. Evacuate the system to at least 29 inches gauge before opening valve to thermocouple vacuum gauge.

6. Continue to evacuate to a minimum of 250 microns. Close valve to vacuum pump and watch rate of rise. If vacuum does not rise above 1500 microns in three to five minutes, system can be considered properly evacuated.

7. If thermocouple vacuum gauge continues to rise and levels off at about 5000 microns, moisture and non-condensables are still present. If gauge continues to rise a leak is present. Repair and re-evacuate.

8. Close valve to thermocouple vacuum gauge and vacuum pump. Shut off pump and prepare to charge.

S-103 CHARGING

Charge the system with the exact amount of refrigerant. Refer to the specification section or check the unit nameplates

for the correct refrigerant charge. After completing airflow measurements and adjustments, the

unit’s refrigerant charge must be checked. The unit comes factory charged, but this charge is based on 400 CFM per ton at minimum ESP per ARI test conditions (generally between .15 - .25 ESP). When air quantity or ESP is different than above, charge must be adjusted to the proper amount.

All package units are charged to the superheat method at the compressor suction line (these are fixed orifice devices).

For charging in the warmer months, 100F superheat at the compressor is required at conditions: 950F outdoor ambient (dry bulb temperature), 800F dry bulb / 670F wet bulb indoor ambient, approximately 50% humidity. This superheat varies when conditions vary from the conditions described.

A superheat charge chart is available for other operating conditions. Use it to provide the correct superheat at the conditions the unit is being charged at.

After superheat is adjusted it is recommended to check unit sub-cooling at the condenser coil liquid line out. In most operating conditions 10 - 150F of sub-cooling is adequate.

An inaccurately charged system will cause future problems.

1. Using a charging scale, allow liquid refrigerant only to enter the high side.

2. After the system will take all it will take, close the valve on the high side of the charging manifold.

3. Start the system and charge the balance of the refrigerant through the low side. DO NOT charge in a liquid form.

4. With the system still running, close the valve on the charging manifold. At this time, you may still have some liquid refrigerant in the charging manifold and will definitely have liquid in the liquid hose. Reseat the liquid line core. Slowly open the high side manifold valve and transfer the liquid refrigerant from the liquid line hose and charging manifold into the suction service valve port. CAREFUL: Watch so that liquid refrigerant does not enter the compressor.

SERVICING

Sat

5. With the system still running, reseat the suction valve core, remove hose and reinstall both valve core caps.

6. Check system for leaks.

Units having flow control restrictors can be checked against the Desired Superheat vs. Outdoor Temperature Chart in this section.

S-104 CHECKING COMPRESSOR EFFICIENCY

The reason for compressor inefficiency is broken or damaged suction and/or discharge valves, or scroll flanks on Scroll compressors, reducing the ability of the compressor to pump refrigerant vapor.

The condition of the valves or scroll flanks is checked in the following manner.

1. Attach gauges to the high and low side of the system.

2. Start the system and run a Cooling Performance Test.

If the test shows-

⇒ Below normal high side pressure. ⇒ Above normal low side pressure. ⇒ Low temperature difference across coil. ⇒ Low amp draw at compressor.

-and the charge is correct. The compressor is faulty - replace

the compressor.

S-108 SUPERHEAT

To obtain the degrees temperature of superheat subtract 50.0 from 63.0°F.

The difference is 13° Superheat. For charging in the warmer months, 10°F superheat at the

compressor is required at conditions: 95°F outdoor ambient (dry bulb temperature), 80°F dry bulb / 67°F wet bulb indoor ambient, approximately 50 % humidity. This superheat varies when conditions vary from the conditions described. A superheat charge chart is provided below for other operating conditions. Use it to provide the correct superheat at the conditions the unit is being charged at. After superheat is adjusted it is recommended to check unit sub-cooling at the condenser coil liquid line out.

Ambient Condenser

Inlet Temp (°F

Drybulb)

100 - - - 10 10

95 90 85 80 75 10 13 17 25 29 70 10 17 20 28 32 65 13 19 26 32 35 60 17 25 30 33 37

Return Air Temp. (°F Drybulb)

65 70 75

- - 10 10 10

- - 12 15 18

- 10 13 17 20

- 10 15 21 26

Superheat

80 85

CHECKING SUPERHEAT

Refrigerant gas is considered superheated whenever its temperature is higher than the saturation temperature corresponding to its pressure. The degree of superheat equals the degrees of temperature increase above the saturation temperature at existing pressure. See Temperature - Pressure Chart.

1. Attach an accurate thermometer or preferably a thermocouple type temperature tester to the suction line at a point at least 6" from the compressor.

2. Install a low side pressure gauge on the suction line service valve at the outdoor unit.

3. Record the gauge pressure and the temperature of the line.

4. Convert the suction pressure gauge reading to temperature by finding the gauge reading in Temperature - Pressure Chart and reading to the left, find the temperature in the °F. Column.

5. The difference between the thermometer reading and pressure to temperature conversion is the amount of superheat.

EXAMPLE:

a. Suction Pressure = 84 b. Corresponding Temp. °F. = 50 c. Thermometer on Suction Line = 63°F.

urated Suction

Suction Pressure

50 26 53 28 55 30 58 32 61 34 63 36 66 38 69 40 72 42 75 44 78 46 81 48 84 50

87 52

Suction Pressure Temperature (R-22)

Temperature (°F)

TABLE 5

S-109 CHECKING SUBCOOLING

Refrigerant liquid is considered subcooled whenever its temperature is lower than the saturation temperature corresponding to its pressure. The degree of subcooling equals the degrees of temperature decrease below the saturation temperature at the existing pressure.

SERVICING

1. Attach an accurate thermometer or preferably a thermocouple type temperature tester to the liquid line as it leaves the condensing unit.

2. Install a high side pressure gauge on the high side service valve.

3. Record the gauge pressure and the temperature of the line.

4. Convert the discharge pressure gauge reading to temperature by finding the gauge reading in Temperature - Pressure Chart and reading to the left, find the temperature in the °F. Column.

5. The difference between the thermometer reading and pressure to temperature conversion is the amount of subcooling.

EXAMPLE:

a. Discharge Pressure = 260 b. Corresponding Temp. °F. = 120°

c. Thermometer on Liquid line = 109°F. To obtain the amount of subcooling subtract 109°F from 120°F. The difference is 11° subcooling. The normal subcooling range

is 10° - 15°.

OUTDOOR

TEMP. °F

115

105

INDOOR

TEMP. °F

DB WB

67 306 - 335 71 311 - 342 63 268 - 299

67 273 - 304 71 278 - 309 63 233 - 264

7595

67 238 - 269 71 243 - 274 63 198 - 229

67 203 - 234 71 208 - 239 63 172 - 203

67 175 - 206 71 180 - 211 63 144 - 175

67 149 - 180

LIQUID

PRESSURE

PSIG

301 - 332

SUCTION

PRESSURE

PSIG

73 - 83 77 - 78 82 - 92 72 - 82 77 - 87 80 - 90 67 - 77 72 - 82 77 - 87 62 - 72 67 - 77 71 - 81 57 - 67 61 - 71 66 - 76 52 - 62

56 - 66

71 155 - 186 60 - 70

Operating Pressures

Temp.

°F.

-40

-38

-36

-34

-32

-30

-28

-26

-24

-22

-20

-18

-16

-14

-12

-10

-8

-6

-4

-2 0 2 4 6 8

10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54

56 58

Gauge Pressure (PSIG) F r eo n- 22

0.61

1.42

2.27

3.15

4.07

5.02

6.01

7.03

8.09

9.18

10.31

11.48

12.61

13.94

15.24

16.59

17.99

19.44

20.94

22.49

24.09

25.73

27.44

29.21

31.04

32.93

34.88

36.89

38.96

41.09

43.28

45.53

47.85

50.24

52.70

55.23

57.83

60.51

63.27

66.11

69.02

71.99

75.04

78.18

81.40

84.70

88.10

91.5

95.1

98.8

Temp.

°F. 60

62 64 65 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96

96 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 136 140 142 144 146 158 150 152 154 156 158 160

Gauge Pressure (PSIG) Freon-22

102.5

106.3

110.2

114.2

118.3

122.5

126.8

131.2

135.7

140.5

145.0

149.5

154.7

159.8

164.9

170.1

175.4

180.9

186.5

192.1

197.9

203.8

209.9

216.0

222.3

228.7

235.2

241.9

248.7

255.6

262.6

269.7

276.9

284.1

291.4

298.8

306.3

314.0

321.9

329.9

338.0

346.3

355.0

364.3

374.1

384.3

392.3

401.3

411.3

421.8

433.3

TEMPERATURE-PRESSURE (R-22)

SERVICING

S-111 FIXED ORIFICE RESTRICTION DEVICES

The fixed orifice restriction device (flowrator) used in conjunction with the indoor coil is a predetermined bore (I.D.).

It is designed to control the rate of liquid refrigerant flow into an evaporator coil.

The amount of refrigerant that flows through the fixed orifice restriction device is regulated by the pressure difference between the high and low sides of the system.

In the cooling cycle when the outdoor air temperature rises, the high side condensing pressure rises. At the same time, the cooling load on the indoor coil increases, causing the low side pressure to rise, but at a slower rate.

Since the high side pressure rises faster when the temperature increases, more refrigerant flows to the evaporator, increasing the cooling capacity of the system.

When the outdoor temperature falls, the reverse takes place. The condensing pressure falls, and the cooling loads on the indoor coil decreases, causing less refrigerant flow.

If a restriction should become evident, proceed as follows:

1. Recover refrigerant charge.

2. Remove the orifice assembly and clean or replace.

3. Replace liquid line drier, evacuate and recharge.

CHECKING EQUALIZATION TIME

During the "OFF" cycle, the high side pressure bleeds to the low side through the fixed orifice restriction device. Check equalization time as follows:

1. Attach a gauge manifold to the suction and liquid line dill valves

2. Start the system and allow the pressures to stabilize.

3. Stop the system and check the time it takes for the high and low pressure gauge readings to equalize.

If it takes more than seven (7) minutes to equalize, the restriction device is inoperative. Replace, install a liquid line drier, evacuate and recharge.

S-112 CHECKING RESTRICTED LIQUID LINE

When the system is operating, the liquid line is warm to the touch. If the liquid line is restricted, a definite temperature drop will be noticed at the point of restriction. In severe cases, frost will form at the restriction and extend down the line in the direction of the flow.

Discharge and suction pressures will be low, giving the appearance of an undercharged unit. However, the unit will have normal to high subcooling.

If a restriction is located, replace the restricted part, replace drier, evacuate and recharge.

S-113 REFRIGERANT OVERCHARGE

An overcharge of refrigerant is normally indicated by excessively high head pressure and/or liquid return to the compressor.

Evaporator coils with a fixed orifice metering device could allow refrigerant to return to the compressor under extreme overcharge conditions.

If high head pressure is not indicated, an overcharge or a system containing non-condensables could be the problem.

If overcharging is indicated:

1. Start the system.

2. Remove small quantities of gas from the suction line dill valve until the head pressure is reduced to normal.

3. Observe the system while running a cooling performance test, if a shortage of refrigerant is indicated, then the system contains non-condensables. See S-114 NonCondensables.

S-114 NON-CONDENSABLES

Check for non-condensables.

1. Shut down the system and allow the pressures to equalize for a minimum of 15 minutes.

2. Take a pressure reading.

3. Compare this pressure to the temperature of the coldest coil since this is where most of the refrigerant will be. If the pressure indicates a higher temperature than that of the coil temperature, non-condensables are present.

To remove the non-condensables.

1. Remove the refrigerant charge.

2. Replace and/or install liquid line drier

3. Evacuate and recharge.

S-115 COMPRESSOR BURNOUT

When a compressor burns out, high temperature develops causing the refrigerant, oil and motor insulation to decompose forming acids and sludge.

If a compressor is suspected of being burned-out, attach a refrigerant hose to the liquid line dill valve and properly remove and dispose of the refrigerant.

Now determine if a burn out has actually occurred. Confirm by analyzing an oil sample using a Sporlan Acid Test Kit, AK-3 or its equivalent.

Remove the compressor and obtain an oil sample from the suction stub. If the oil is not acidic, either a burnout has not occurred or the burnout is so mild that a complete cleanup is not necessary.

If acid level is unacceptable the system must be cleaned by using the drier cleanup method.

SERVICING

CAUTION

DO NOT ALLOW THE SLUDGE OR OIL TO CONTACT THE SKIN, SEVERE BURNS MAY RESULT.

Suction Line Drier Clean-up Method

Discard at least twelve (12) inches of the suction line immediately out of the compressor stub due to burned residue and contaminates.

1. Remove compressor discharge line strainer, liquid line strainer and/or drier and capillary tubes from indoor and outdoor coils.

2. Units with an expansion valve coil, remove the liquid line drier and expansion valve.

3. Purge all remaining components with dry nitrogen or carbon dioxide until clean.

4. Install new components including liquid liner drier.

5. Install suction line drier.

6. Braze all joints, leak test, evacuate, and recharge system.

7. Start up the unit and record the pressure drop across the cleanup drier.

8. Continue to run the system for a minimum of twelve (12) hours and recheck the pressure drop across the drier. Pressure drop should not exceed 6 - 8 PSIG.

9. Continue to run the system for several days repeatedly checking pressure drop across the suction line drier. If the pressure drop never exceeds the 6 - 8 PSIG, the drier must be adequate and is trapping the contaminants and it is permissible to leave it in the system.

10.If the pressure drop becomes greater, then it must be replaced and steps 5 through 9 repeated until it does not exceed 6 - 8 PSIG.

NOTE: The cause for burnout MUST be determined and cor- rected BEFORE the new compressor is started.

Wrap the reversing valve with a large rag saturated with water. "Re-wet" the rag and thoroughly cool the valve after each brazing operation of the four joints involved. The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line connection.

The use of a wet rag sometimes can be a nuisance. There are commercial grades of heat absorbing paste that may be substituted.

After the valve has been installed, leak test, evacuate and recharge.

S-200 CHECKING EXTERNAL STATIC PRESSURE

The minimum and maximum allowable duct static pressure is found in the Technical Information Manual.

Too great of an external static pressure will result in insufficient air that can cause icing of the coil, whereas too much air can cause poor humidity control, and condensate to be pulled off the evaporator coil causing condensate leakage. Too much air can cause motor overloading and in many cases this constitutes a poorly designed system. To determine proper air movement, proceed as follows:

1. Using a draft gauge (inclined manometer) measure the static pressure of the return duct at the inlet of the unit, (Negative Pressure).

S-122 REVERSING VALVE REPLACEMENT

Remove the refrigerant charge from the system. When brazing a reversing valve into the system, it is of ex-

treme importance that the temperature of the valve does not

exceed 250°F. at any time.

Total External Static

SERVICING

2. Measure the static pressure of the supply duct, (Positive Pressure).

3. Add the two readings together.

NOTE: Both readings may be taken simultaneously and read directly on the manometer as shown in the illustration above, if so desired.

4. Consult proper table for quantity of air.

If the external static pressure exceeds the minimum or maximum allowable statics, check for closed dampers, dirty filters, undersized or poorly laid out ductwork.

S-201 CHECKING TEMPERATURE RISE

Temperature rise is related to the BTUH output of the unit and the amount of air (CFM) circulated over the indoor coil.

All units are designed for a given range of temperature increase. This is the temperature of the air leaving the unit minus the temperature of the air entering the unit.

The more air (CFM) being delivered through a given unit the less the rise will be; so the less air (CFM) being delivered, the greater the rise. The temperature rise should be adjusted in accordance to a given unit specifications and its external static pressure.

1. Take entering and leaving air temperatures.

2. Select the proper speed tap from the unit's blower performance data in the Technical Manual for the specific unit.

3. Take motor amperage draw to determine that the motor is not overloaded during adjustments.

T T

RISE = SUPPLY -

Checking Temperature Rise

WIRING DIAGRAMS

PACKAGE SYSTEM WIRING DIAG RAM - 1 STAGE ELECTR IC HEAT

SEE NOTE 1

#18 GA UGE 7 WIRE

REQUIRED FOR

HEAT PUMPS

ROOM THERMOSTAT

CW1GRE

PACKAGE UNIT LOW VOLTAGE

JUNCTION BOX

R Y

YELLOW

GREEN

ORANGE

WHITE

R Y

G O

TYPICAL HP

BLUE

OUTDOOR THERMOSTAT

CLOSE ON TEMPERATURE FALL

PACKAGE SYSTEM WIRING D IAGRAM - 2 STAGE ELECTR IC HEAT

ABOVE 10 KW

RED

SEE NO TE 1

#18 GAUGE 8 W IR E

FOR HEAT PUMPS

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

SEE NOTE 2

ROOM THERMOSTAT

W2 C RYO W1G E

PACKAGE UNIT LOW VOLTAGE JUNCTION BOX

RED

G O

R Y

YELLOW GREEN ORANGE

WHITE

BROWN

BLUE

OUTDOOR THERMOSTAT

CLOSE ON TE M PERATURE FALL

TYPICAL HP

NOTES:

1) "O" and "E" used on heat pumps only.

2) Connect wire from terminal #1 on outdoor thermostat to the white wire on package units if single stage indoor thermostat is used.

Color Codes

R - Red Y - Yellow BL - Blue BR - Brown O - Orange W - White G - Green

OT18-60A OUTDOOR THERMOSTAT

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

WIRING DIAGRAMS

PACKAGE SYSTEM WIRING DIAGRAM - HEAT PUMPS ONLY!

TWO-STAGE ELECTRIC HEAT ABOVE 10 kW

TYPICAL H/P

ROOM THERMOSTAT

#18 GAUGE 8 WIRE

OUTDOOR THERMOSTAT #2 (IF US ED, SEE NOTE 1)

OUTDOOR THERMOSTAT #1

CLOSE O N TEMPERATURE FALL

W2 C RYO W1G E

Y G

PACKAGE HEAT PUMP

R Y

LOW VOLTAGE JUNCTION BOX

RED

YELLOW

GREEN

ORANGE

WHITE

BROWN

BLUE

For outdoor temperatures below 0° F with 50% or higher relative humidity, set outdoor thermostat at 0° F

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

NOTE 1: OT18 #2 CAN BE CONNECTED BETWEEN W2 OF THERMOSTAT AND BROWN WIRE IF DESIRED.

COLOR CODES R --RED Y --YELLOW BL-BLUE BR-BROWN O --ORANGE W -WHIT E G --GREEN

OT18-60A OUTDOOR THERMOSTAT

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

WIRING DIAGRAMS

GPC/GPH13**M21*

L1 L2

HTR1

PLM

2 3 4 5 6 7 8

HTR2

ONE (1) ELEMENT ROWS TWO (2) ELEMENT ROWS

L2L1

PLM

1 2 3 4 5 6 7 8 9

5 KW

10 KW

PLM

BL BR

2 3 4

5 6

M1 M2

7 8 9

HTR1

HTR2

HTR3

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

M3 M4

Y R

HTR1

HTR2 HTR3

HTR4

M1 M2

TL TL TL

M5 M6

M8 R2

BL BR

PLM

1 2 3 4 5 6 7 8 9

L2 L1 L2

THREE (3) ELEMENT ROWS FOUR (4) ELEMENT ROWS

L2L1 L1 L2

15 KW

20 KW

SINGLE PHASE HKR** HEAT KIT

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

WIRING DIAGRAMS

GPC/GPH13[36-60]M23*

B17579-19

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

FL HTR3 TL

FL HTR2 TL

FL HTR1 TL

CIRCUIT 2

3 PH. 208 - 240V

3-PHASE HKR3** HEAT KIT - 15 KW & 20 KW

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

WIRING DIAGRAMS

GPH13[36-60]M24*

WIRE CODE

OR ORANGE

BK BLACK

PU PURPLE

PK PINK

BR BROWN

BL BLUE

GR GREEN

M2 M4

HEAT ELEMENT

RELAY/SEQUENCER

THERMAL LIMIT

HTR

COMPONENT CODE

TLHTR3FL

TLHTR2FL

TLHTR1FL

HKR4-15

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

3 PH. 46 0V

CIRCUIT 2

3-PHASE HKR4 HEAT KIT - 15 KW

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

0140K00147 Rev. A

WIRING DIAGRAMS

GPH13[48-60]M24*

PU PURPLE

PK PINK

OR ORANGE

WIRE CODE

BR BROWN

BL BLUE

BK BLACK

GR GREEN

RELAY/SEQUENCER

THERMAL LIMIT

TLHTR3FL

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

TLHTR2FL

TLHTR1FL

COMPONENT CODE

HTR HEAT ELEMENT

HKR4-20

CIRCUIT 2

3 PH. 460V

0140K00148 Rev. A

3-PHASE HKR4 HEAT KIT - 20 KW

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

WIRING DIAGRAMS

GPC/GPH13**M2*

(WIRING DIAGRAM FOR USE WITH MODELS BUILT BEFORE MARCH 2008)

ROOFTOP UNITS

GOODMA N MANUFAC TURING CO.

MODEL GPH13MED ECONOM IZER

WHITE

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

YELLOW

ORANGE

GPC & GPH SERIES WIRING DIAGRAM

GPH13MED ECONOMIZER FOR GPC/GPH13**M2*

(WIRING DIAGRAM FOR USE WITH MODELS BUILT BEFORE MARCH 2008)

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

NOTE: RECOMMEND MULTI-STAGE T'STAT

WIRING DIAGRAMS

GPC/GPH13**M2*

(WIRING DIAGRAM FOR USE WITH MODELS BUILT SINCE MARCH 2008)

ECONOMIZER

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS

UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO

DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

GPC13MED102 & 103 FOR GPC13**M2* GPH13MED102 & 103 FOR GPH13**M2*

(WIRING DIAGRAM FOR USE WITH MODELS BUILT SINCE MARCH 2008.)

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

McDaniel Metals GPH13, GPC13 Service Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual