Instruction manual

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48EZ(N) ---A

Comfort t 13 SEER Single---Packaged HYBRID HEATr

Dual Fuel System with Puron® (R---410A) Refrigerant

Single and Three Phase

2 --- 5 N o m i n a l To n s ( S i z e s 2 4 --- 6 0 )

Installation Instructions

NOTE: Read the entire instruction manual before starting the

installation.

NOTE: Installer: Make sure the Owner’s Manual and Service

Instructions are left with the unit after installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1--2.......................

INTRODUCTION 2...................................

RECEIVING AND INSTALLATION 2--13.................

Check Equipment 2..................................

Identify Unit 2....................................

Inspect Shipment 2.................................

Provide Unit Support 2...............................

Roof Curb 2......................................

Slab Mount 2.....................................

Field Fabricate Ductwork 6............................

Provide Clearances 6.................................

Rig and Place Unit 6.................................

Connect Condensate Drain 7...........................

Install Flue Hood 7...................................

Install Gas Piping 7..................................

Install Duct Connections 9.............................

Configuring Units for Downflow (Vertical)

Discharge 9......................................

Install Electrical Connections 12........................

High--Voltage Connections 12........................

Special Procedures for 208--V Operation 12..............

Control Voltage Connections 13.......................

Balance Point Setting Thermidistat or Hybrid Heat

Thermostat 13....................................

Transformer Protection 13...........................

P R E -- S T A R T -- U P 1 3 -- 1 4................................

START--UP 14--17.....................................

Check for Refrigerant Leaks 14.........................

Unit Sequence of Operation 14.........................

Start--Up Heating and Make Adjustments 14...............

Checking Heating Control 14.........................

Check Gas Input 15................................

Adjust Gas Input 15................................

Check Burner Flame 16.............................

Start--Up Cooling and Make Adjustments 17...............

Checking Cooling Control Operation 17................

Checking and Adjusting Refrigerant 17.................

Indoor Airflow and Airflow Adjustments 17.............

MAINTENANCE 46--49................................

Air Filter 46........................................

Indoor Blower and Motor 46...........................

Flue Gas Passageways 47..............................

Limit Switch 47.....................................

Burner Ignition 47...................................

Main Burners 47....................................

Outdoor Coil, Indoor Coil, & Condensate Drain Pan 47......

Outdoor Fan 48.....................................

A09034

Fig. 1 -- Unit 48EZ--A

Electrical Controls and Wiring 48.......................

Refrigerant Circuit 48.................................

Gas Input 49........................................

Indoor Airflow 49...................................

Check Defrost Thermostat 49...........................

PuronR Items 49....................................

TROUBLESHOOTING 52..............................

START--UP CHECKLIST 52............................

SAFETY CONSIDERATIONS

Installation and servicing of this equipment can be hazardous due

to mechanical and electrical components. Only trained and

qualified personnel should install, repair, or service this equipment.

Untrained personnel can perform basic maintenance functions such

as cleaning and replacing air filters. All other operations must be

performed by trained service personnel. When working on this

equipment, observe precautions in the literature, on tags, and on

labels attached to or shipped with the unit and other safety

precautions that may apply.

Follow all safety codes. Wear safety glasses, protective clothing,

and work gloves. Have fire extinguisher available. Read these

instructions thoroughly and follow all warnings or cautions

included in literature and attached to the unit. Consult local

building codes, the current editions of the National Fuel Gas Code

(NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code

(NEC) NFPA 70.

In Canada refer to the current editions of the National Standards of

Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane

Installation codes, and Canadian Electrical Code CSA C22.1.

Recognize safety information. This is the safety--alert symbol

When you see this symbol on the unit and in instructions or manu-

als, be alert to the potential for personal injury. Understand these

signal words: DANGER, WARNING, and CAUTION. These

words are used with the safety--alert symbol. DANGER identifies

Summary of content (56 pages)

PAGE 1
48EZ(N) ---A Comfort t 13 SEER Single ---Packaged HYBRID HEATr Dual Fuel System with Puron® (R ---410A) Refrigerant Single and Three Phase 2---5 Nominal Tons (Sizes 24---60) Installation Instructions NOTE: Read the entire instruction manual before starting the installation. NOTE: Installer: Make sure the Owner’s Manual and Service Instructions are left with the unit after installation. TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1--2 INTRODUCTION . . . . . .
PAGE 2
the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. ! WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.
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48EZ -- A A09450 Fig.
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8EZ -- A A09451 Fig.
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B HVAC unit basepan HVAC unit base rails G C Sealing Gasket Roofcurb Anchor screw H F A Wood nailer* Flashing field supplied Roofcurb* Insulation (field supplied) E D Cant strip field supplied SMALL CURB 48EZ -- A Roofing material field supplied A09418 *Provided with roofcurb A09090 ROOF CURB DETAIL B C G H F A E D LARGE CURB A09415 A09419 UNIT SIZE Small Large CATALOG NUMBER CPRFCURB010A00 CPRFCURB011A00 CPRFCURB012A00 CPRFCURB013A00 A IN.
PAGE 6
CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition DUCTS MINIMUM HEIGHT: 36" (914.
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hooking points and load support areas. Materials showing any kind of wear in these areas must not be used and should be discarded. ! TRAP OUTLET WARNING 1-in. (25 mm) min. UNIT FALLING HAZARD 2-in. (51 mm) min. Failure to follow this warning could result in personal injury or death. Never stand beneath rigged units or lift over people. WARNING PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal injury/death or property damage.
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48EZ -- A A 1/8--in. (3.2 mm) NPT plugged tapping, accessible for test gauge connection, must be installed immediately upstream of the gas supply connection to the gas valve. When installing the gas supply line, observe local codes pertaining to gas pipe installations. Refer to the NFGC NFPA 54/ANSI Z223.1 latest edition (in Canada, CAN/CGA B149.1). NOTE: In the state of Massachusetts: 1. Gas supply connections MUST be performed by a licensed plumber or gas fitter. 2.
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3. Use flexible transition between rigid ductwork and unit to prevent transmission of vibration. The transition may be screwed or bolted to duct flanges. Use suitable gaskets to ensure weather tight and airtight seal. 4. All units must have field--supplied filters or accessory filter rack installed in the return--air side of the unit. Recommended sizes for filters are shown in Table 1. 5. Size all ductwork for maximum required airflow (either heating or cooling) for unit being installed.
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Table 1 – Physical Data -- Unit 48EZ--A 48EZ -- A UNIT SIZE 48EZ --- A NOMINAL CAPACITY --- ton SHIPPING WEIGHT --- lb. (kg) COMPRESSORS Quantity REFRIGERANT (R --- 410A) Quantity --- lb (kg) REFRIGERANT METERING DEVICE OUTDOOR ORIFICE 24040 2 359 163 24060 2 359 163 30040 2 ---1/2 373 169 8.3 3.8 8.3 3.8 10.2 4.6 30060 2 ---1/2 373 169 Scroll 1 10.2 4.6 36060 3 379 172 36090 3 379 172 42060 3 ---1/2 461 209 42090 3 ---1/2 461 209 7.9 3.6 7.9 3.6 10.0 4.5 10.0 4.
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UNIT SIZE 48EZ --- A 48090 48115 48130 60090 60115 60130 NOMINAL CAPACITY --- ton 4 4 4 5 5 5 OPERATING WEIGHT--- lb 482 482 482 507 507 507 (kg) 219 219 219 230 230 230 COMPRESSORS Scroll Quantity 1 REFRIGERANT (R --- 410A) 9.6 12.3 Quantity --- lb 4.4 5.6 (kg ) REFRIGERANT METERING DEVICE TXV OUTDOOR ORIFICE --- in. (qty) 0.046 (2) 0.052 (2) (mm) 1.2 1.3 OUTDOOR COIL 2...21 2...21 2...21 2...21 2...21 2...21 Rows...Fins --- in. 13.6 13.6 13.6 17.5 17.5 17.
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Step 10 — Install Electrical Connections ! HIGH VOLTAGE POWER LEADS (SEE UNIT WIRING LABEL) WARNING POWER SUPPLY ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. The unit cabinet must have an uninterrupted, unbroken electrical ground.
PAGE 13
PRE--START--UP Control Voltage Connections Do not use any type of power--stealing thermostat. Unit control problems may result. Use no. 18 American Wire Gage (AWG) color--coded, insulated (35_C minimum) wires to make the control voltage connections between the thermostat and the unit. If the thermostat is located more than 100 ft (30.5 m) from the unit (as measured along the control voltage wires), use no. 16 AWG color--coded, insulated (35_C minimum) wires.
PAGE 14
! sent to the Defrost Board (DB) terminal “Y”. The DB has a built in five minute anti--short cycle timer which will not allow the compressor to restart before the time delay has expired. (2.) “T2” energizes the compressor contactor via the High Pressure Switch (HPS) and Low Pressure Switch (LPS). The compressor and outdoor fan start. Thermostat “G” energizes the Interface Fan Board terminal “G”. The blower motor is energized through contacts of the IFB. (3.
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Check Gas Input Check gas input and manifold pressure after unit start--up (See Table 3). If adjustment is required proceed as follows: S The rated gas inputs shown in Table 3 are for altitudes from sea level to 2000 ft (610 m) above sea level. These inputs are based on natural gas with a heating value of 1025 Btu/ft3 at 0.60 specific gravity, or propane gas with a heating value of 2500 Btu/ft3 at 1.5 specific gravity. IN THE U.S.A.
PAGE 16
3. Record number of seconds for gas meter test dial to make one revolution. 4. Divide number of seconds in Step 3 into 3600 (number of seconds in one hr). ! WARNING FIRE AND UNIT DAMAGE HAZARD Failure to follow this warning could result in personal injury or death and/or property damage. 48EZ -- A Unsafe operation of the unit may result if manifold pressure is outside this range. Pipe Plug Manifold A07679 Fig. 11 -- Burner Assembly 5.
PAGE 17
LED INDICATION On Off 2 Flashes 3 Flashes 4 Flashes 5 Flashes 6 Flashes 7 Flashes 8 Flashes 9 Flashes NOTES: 1.This code indicates an internal processor fault that will reset itself in one hr. Fault can be caused by stray RF signals in the structure or nearby. This is a UL requirement. 2. LED indicates acceptable operation. Do not change ignition control board. 3. When W is energized the burners will remain on for a minimum of 60 sec. 4.
PAGE 18
NOTE: Be sure that all supply--and return--air grilles are open, free from obstructions, and adjusted properly. WARNING 3. ELECTRICAL SHOCK AND EXPLOSION HAZARD Failure to follow this warning could result in personal injury or death. 4. Gas Heating Fan Speed Set-up To change the gas heating speed: 1. Remove the vinyl cap off of the desired speed tap wire (Refer to Table 6 for color coding). Table 7 shows the temperature rise associated with each fan speed for a given static pressure.
PAGE 19
25 --- 55oF (14 --- 31oC) 30 --- 60oF (17 --- 33oC) 48EZ( ---,N)A24040 48EZ( ---,N)A24060 HEATING RISE RANGE UNIT Blue Low Red Orange Black Medium2 Med---High High1 Pink Black High Med---Low Orange Med---High1 Pink Med---Low Red Blue Low Medium2 WIRE COLOR CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Hea
PAGE 20
25 --- 55oF (14 --- 31oC) 30 --- 60oF (17 --- 33oC) 48EZ( ---,N)A30040 48EZ( ---,N)A30060 HEATING RISE RANGE UNIT Blue Low Red Orange Black Medium Med---High2 High1 Pink Black High Med---Low Orange Med---High2 Pink Med---Low1 Red Blue Low Medium WIRE COLOR MOTOR SPEED CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating
PAGE 21
35 --- 65oF (19 --- 36oC) 25 --- 55oF (14 --- 31oC) 48EZ( ---,N)A36060 48EZ( ---,N)A36090 HEATING RISE RANGE UNIT Blue Low Red Orange Black Medium2 Med---High High1 Pink Black High Med---Low Orange Med---High Pink Med---Low Red Blue Low1 Medium2 WIRE COLOR MOTOR SPEED CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating
PAGE 22
35 --- 65oF (19 --- 36oC) 25 --- 55oF (14 --- 31oC) 48EZ( ---,N)A42060 48EZ( ---,N)A42090 HEATING RISE RANGE UNIT Blue Low Red Orange Black Medium1 Med---High2 High Pink Black High Med---Low Orange Med---High2 Pink Med---Low Red Blue Low1 Medium WIRE COLOR MOTOR SPEED CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating
PAGE 23
30 --- 60oF (17 --- 33oC) 35 --- 65oF (19 --- 36oC) 48EZ( ---,N)A48090 48EZ( ---,N)A48115 HEATING RISE RANGE UNIT Blue Low Red Orange Black Medium2 Med---High1 High Pink Black High Med---Low Orange Med---High Pink Med---Low Red Blue Low1 Medium2 WIRE COLOR MOTOR SPEED CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating
PAGE 24
35 --- 65oF (19 --- 36oC) 35 --- 65oF (19 --- 36oC) 48EZ( ---,N)A48130 48EZ( ---,N)A60090 HEATING RISE RANGE UNIT Blue Low1 Red Orange Black Medium2 Med---High High Pink Black High Med---Low Orange Med---High1 Pink Med---Low Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating Rise (oF) Heating Rise (oC) CFM Heating
PAGE 25
HEATING RISE RANGE MOTOR SPEED WIRE COLOR 0.
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HEATING RISE RANGE 30 - 60oF (17 - 33oC) UNIT 48EZ(-,N)A24040 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 664 82 0.09 46 25 787 111 0.12 38 21 860 124 0.13 35 20 949 151 0.16 32 18 1202 261 0.
PAGE 27
HEATING RISE RANGE 25 - 55oF (14 - 31oC) UNIT 48EZ(-,N)A24060 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 664 82 0.09 46 25 787 111 0.12 38 21 860 124 0.13 35 20 949 151 0.16 32 18 1202 261 0.
PAGE 28
HEATING RISE RANGE 30 - 60oF (17 - 33oC) UNIT 48EZ(-,N)A30040 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 669 90 0.10 45 25 928 155 0.17 33 18 1025 195 0.21 29 16 1091 225 0.24 NA NA 1173 266 0.
PAGE 29
HEATING RISE RANGE 25 - 55oF (14 - 31oC) UNIT 48EZ(-,N)A30060 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 669 90 0.10 45 25 928 155 0.17 33 18 1025 195 0.21 29 16 1091 225 0.24 NA NA 1173 266 0.
PAGE 30
HEATING RISE RANGE 25 - 55oF (14 - 31oC) UNIT 48EZ(-,N)A36060 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1215 289 0.31 25 14 1260 324 0.35 NA NA 1326 365 0.39 NA NA 1579 576 0.62 NA NA 1633 626 0.
PAGE 31
HEATING RISE RANGE 35 - 65oF (19 - 36oC) UNIT 48EZ(-,N)A36090 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1215 289 0.31 25 14 1260 324 0.35 NA NA 1326 365 0.39 NA NA 1579 576 0.62 NA NA 1633 626 0.
PAGE 32
HEATING RISE RANGE 25 - 55oF (14 - 31oC) UNIT 48EZ(-,N)A42060 Pink Med-Low Orange Black Med-High2 High Red Blue Low1 Medium WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1324 189 0.20 34 19 1384 210 0.23 NA NA 1549 280 0.30 NA NA 1586 299 0.32 NA NA 1736 386 0.
PAGE 33
HEATING RISE RANGE 35 - 65oF (19 - 36oC) UNIT 48EZ(-,N)A42090 Pink Med-Low Orange Black Med-High2 High Red Blue Low1 Medium WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1324 189 0.20 34 19 1384 210 0.23 NA NA 1549 280 0.30 NA NA 1586 299 0.32 NA NA 1736 386 0.
PAGE 34
HEATING RISE RANGE 35 - 65oF (19 - 36oC) UNIT 48EZ(-,N)A48090 Pink Med-Low Orange Black Med-High High Red Blue Low1 Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1457 233 0.25 47 26 1508 261 0.28 45 25 1822 417 0.45 37 21 2291 769 0.
PAGE 35
HEATING RISE RANGE 30 - 60oF (17 - 33oC) UNIT 48EZ(-,N)A48115 Pink Med-Low Orange Black Med-High High Red Blue Low1 Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1457 233 0.25 47 26 1508 261 0.28 45 25 1822 417 0.45 37 21 2291 769 0.
PAGE 36
HEATING RISE RANGE 35 - 65oF (19 - 36oC) UNIT 48EZ(-,N)A48130 Pink Med-Low Orange Black Med-High High Red Blue Low1 Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1457 233 0.25 47 26 1508 261 0.28 45 25 1822 417 0.45 37 21 2291 769 0.
PAGE 37
HEATING RISE RANGE 35 - 65oF (19 - 36oC) UNIT 48EZ(-,N)A60090 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1436 239 0.26 NA NA 1796 434 0.47 54 30 2009 579 0.62 48 27 2148 691 0.
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HEATING RISE RANGE 30 - 60oF (17 - 33oC) UNIT 48EZ(-,N)A60115 Pink Med-Low Orange Black Med-High1 High Red Blue Low Medium2 WIRE COLOR MOTOR SPEED CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) CFM WATTS BHP Heating Rise (oF) Heating Rise (oC) 0.2 1436 239 0.26 NA NA 1796 434 0.47 54 30 2009 579 0.62 48 27 2148 691 0.
PAGE 39
MOTOR SPEED WIRE COLOR 0.1 1479 224 0.24 0.2 1436 239 0.26 0.3 1387 247 0.26 NA 1690 476 0.51 57 32 1905 623 0.67 51 28 2036 733 0.79 47 26 2236 941 1.01 43 24 NA 1724 460 0.49 56 31 1933 607 0.65 50 28 2073 717 0.77 46 26 2322 975 1.05 41 23 48EZ-- A NA NA 25 45 2161 908 0.97 27 48 2002 743 0.80 29 52 1868 639 0.69 32 58 1651 485 0.52 NA NA 26 46 2085 869 0.93 27 49 1967 758 0.81 29 53 1829 648 0.69 NA NA 1616 501 0.54 NA NA 27 48 2006 836 0.
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600 0.03 1500-2200 CFM 16x24x1+18x24x1 (406x610x25+457x610x25) 600-1400 CFM 12x20x1+12x20x1 (305x508x25+305x508x25) 1200-1800 CFM 16x24x1+14x24x1 (406x610x25+356x610x25) FILTER SIZE IN. (MM) 1500-2200 CFM 16x24x1+18x24x1 (406x610x25+457x610x25) 600-1400 CFM 12x20x1+12x20x1 (305x508x25+305x508x25) 1200-1800 CFM 16x24x1+14x24x1 (406x610x25+356x610x25) FILTER SIZE IN. (MM) UNIT SIZE 24 30 36 42 48 60 800 0.04 5.0 3.5, 4.0 COOLING TONS 2.0, 2.5, 3.0 5.0 3.5, 4.0 COOLING TONS 2.0, 2.5, 3.
PAGE 41
48EZ -- A A10207C Fig.
PAGE 42
48EZ -- A A10207L Fig.
PAGE 43
48EZ -- A A10208C Fig.
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48EZ -- A A10208L Fig. 15 Cont.
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48EZ -- A A08019 Fig.
PAGE 46
MAINTENANCE 3. Inspect blower motor and wheel for cleanliness at the beginning of each heating and cooling season. Clean when necessary. For first heating and cooling season, inspect blower wheel bi--monthly to determine proper cleaning frequency. 4. Check electrical connections for tightness and controls for proper operation each heating and cooling season. Service when necessary. Ensure electrical wiring is not in contact with refrigerant tubing or sharp metal edges. 5.
PAGE 47
1. Remove the induced draft blower assembly according to directions in the Induced Draft Blower Assembly section. 2. Remove the 11 screws holding the flue collector box cover (See Fig. 17) to the heat exchanger assembly. Inspect the heat exchangers. 3. Clean all surfaces, as required, using a wire brush. g. Reinstall blower access panel (see Fig. 18). 3. Restore electrical power to unit. Start unit and check for proper blower rotation and motor speeds during heating and cooling cycles.
PAGE 48
Rinse coils with clear water, using a garden hose. Be careful not to splash water on motors, insulation, wiring, or air filter(s). For best results, spray outdoor coil fins from inside to outside the unit. On units with an outer and inner condenser coil, be sure to clean between the coils. Be sure to flush all dirt and debris from the unit base. Inspect the drain pan and condensate drain line when inspecting the coils. Clean the drain pan and condensate drain by removing all foreign matter from the pan.
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OF1 DFT OF2 T2 C C O T1 O R W2 Y C Y 30 30 60 120 60 P3 ON DFT QUIET SHIFT 90 INTERVAL TIMER OFF J1 48EZ -- A P1 SPEEDUP Speedup Pins Quiet Shift Defrost interval DIP switches A08020 Fig. 23 -- Defrost Control ! the Indoor Airflow and Airflow Adjustments section to check the system airflow. WARNING EXPLOSION, PERSONAL ENVIRONMENTAL HAZARD INJURY AND Failure to follow this warning could result in personal injury, death or property damage. System under pressure.
PAGE 50
48EZ -- A C99097 Fig. 24 -- Refrigerant Circuit 2. Disconnect leads on switch. 3. Apply ohm meter leads across switch. You should have continuity on a good switch. NOTE: Because these switches are attached to refrigeration system under pressure, it is not advisable to remove this device for troubleshooting unless you are reasonably certain that a problem exists. If switch must be removed, remove and recover all system charge so that pressure gauges read 0 psi.
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INDOOR COIL OUTDOOR COIL ACCUMULATOR TXV in Metering Position COMPRESSOR LCS HP S Bypass Position 48EZ -- A LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater®Metering De vice Arrow indicates direction of flo w C03011 Fig.
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48EZ -- A Servicing Systems on Roofs and with Synthetic materials POE (polyolester) compressor lubricants are known to cause long term damage to some synthetic roofing materials. Exposure, even if immediately cleaned up, may cause embrittlement (leading to cracking) to occur in one year or more. When performing any service that may risk exposure of compressor oil to the roof, take appropriate precautions to protect roofing.
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Table 12 – Troubleshooting Guide -- Cooling or Heat Pump Heating Mode Compressor and Outdoor fan will not start. Compressor will not start but Outdoor fan runs.
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Table 13 – Troubleshooting Guide–Heating SYMPTOM CAUSE Water in gas line No power to furnace No 24--v power supply to control circuit Burners will not ignite Mis--wired or loose connections Misaligned spark electrodes No gas at main burners Inadequate heating Dirty air filter Gas input to furnace too low Unit undersized for application Restricted airflow 48EZ -- A Limit switch cycles main burners Poor flame characteristics Incomplete combustion results in: Aldehyde odors, carbon monoxide, sooting
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START--UP CHECKLIST (Remove and Store in Job Files) I. PRELIMINARY INFORMATION MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: III. START--UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS INDOOR (EVAPORATOR) FAN AMPS TEMPERATURES OUTDOOR (CONDENSER) AIR TEMPERATURE DB RETURN--AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB HEAT PUMP SUPPLY AIR__________________ GAS HEAT SUPPLY AIR PRESSURES GAS INLET PRESSURE IN. W.C. GAS MANIFOLD PRESSURE IN. W.C.
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48EZ -- A Copyright 2011 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 11/11 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.