38MVC/40MVC
38MVQ/40MVQ
Comfortt Series High---Wall Duct---Free Split System
Sizes 009 --- 024
Service Manual
TABLE OF CONTENTS
PAGE SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1 STANDARD FEATURES AND ACCESSORIES . . . . . . . . . . . 2 SPECIFICATIONS - COOLING ONLY . . . . . . . . . . . . . . . . . . 3 SPECIFICATIONS - HEAT PUMP UNITS . . . . . . . . . . . . . . . 4 DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SERVICE VALVE LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . 5 CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SYSTEM OPERATING ENVELOPE . . . . . . . . . . . . . . . . . . . . 7 ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 CONNECTION DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . 9 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 16 REFRIGERATION CYCLE DIAGRAM . . . . . . . . . . . . . . . . . 17 REFRIGERANT LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SYSTEM EVACUATION AND CHARGING . . . . . . . . . . . . . 19 CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 SYSTEM SAFETIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3 MINUTE TIME DELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 COMPRESSOR OVERCURRENT PROTECTION . . . . 20 - 21 SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 21 MODES OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 22 - 24 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . 25 - 37 APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 - 43
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. 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 and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety-alert symbol !! When you see this symbol on the unit and in instructions or manuals, 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 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.
Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.
INTRODUCTION
Section 1 of this Service Manual provides the necessary information to service, repair, and maintain the EEZ family of Puron air conditioners and heat pumps. Section 2 of this manual is an appendix with data required to perform troubleshooting. Use the Table of Contents to locate a desired topic.
38/40MVC, MVQ
MODEL NUMBER NOMENCLATURE
INDOOR UNIT
40 |
MVC |
018 |
--- |
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Fan Coil Unit
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Nominal Capacity |
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009 --- |
3/4 Ton |
Unit Type |
012 --- |
1 Ton |
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MVC --- |
Cooling Only |
018 --- |
1---1/2 Ton |
MVQ --- |
Heat Pump |
024 --- |
2 Tons |
OUTDOOR UNIT
38 |
MVC |
018 |
--- |
Air---Cooled Condenser
|
Nominal Capacity |
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Unit Type |
009 |
--- 3/4 Ton |
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012 |
--- 1 |
Ton |
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MVC --- Cooling Only |
018 |
--- 1---1/2 Ton |
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MVQ --- Heat Pump |
024 |
--- 2 |
Tons |
3--- |
01 |
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Voltage |
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--- |
--- 30VDC |
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1 |
--- 115--- |
1--- |
60 |
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3 --- |
208/230--- |
1--- |
60 |
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3--- |
01 |
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Voltage |
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1--- |
115--- |
1--- |
60 |
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3--- |
208/230--- |
1--- |
60 |
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SERIAL NUMBER NOMENCLATURE
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01 |
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06 |
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V |
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00001 |
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Week of Manufacture |
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Serial Number |
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Year of Manufacture |
Manufacturing Site |
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2
STANDARD FEATURES AND ACCESSORIES
Ease Of Installation |
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Mounting Brackets |
S |
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Low Voltage Controls |
S |
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Comfort Features |
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Microprocessor Controls |
S |
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Wireless Remote Control |
S |
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Automatic Air Sweep |
S |
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Air Direction Control |
S |
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Auto Restart Function |
S |
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Cold Blow Protection On Heat Pumps |
S |
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Turbo Mode On Sizes 9K and 12 K |
S |
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Auto Changeover On Heat Pumps |
S |
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Energy Saving Features |
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Sleep Mode |
S |
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Stop/Start Timer |
S |
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Safety And Reliability |
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3 Minute Time Delay For Compressor |
S |
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Over Current Protection For Compressor |
S |
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Indoor Coil Freeze Protection |
S |
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Indoor Coil High Temperature Protection On Heat Pumps |
S |
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Condenser High Temperature Protection On heat Pumps{ |
S |
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Accumulator On Heat Pumps |
S |
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Ease Of Service And Maintenance |
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Cleanable Filters |
S |
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Diagnostics |
S |
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Liquid Line Pressure Taps |
S |
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Suction And Discharge Pressure Taps (Sizes 18 and 24K) |
S |
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Application Flexibility |
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Low Ambient Controls (---20˚F) |
A |
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Condensate Pumps |
A |
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Crankcase Heater |
A |
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Wind Baffles |
F |
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Warranty |
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5 ---Year Compressor Warranty |
S |
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1 --- Parts Warranty |
S |
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Compressor Extended Warranty Years 6 Thru 10 |
O |
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All Parts And Labor Years 2 Thru 5 |
O |
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All Parts And Labor Years 2 Thru 5, Compressor Years 6 |
O |
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Thru 10 |
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{ Sizes 18k & 24k |
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Legend |
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S Standard |
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A Accessory |
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O Optional |
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F Field Fabricated |
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INDOOR UNITS
A07892
Fig. 1 – Condensate Pump
On high wall fan coils, the condensate pump has a lift capability of 18 ft (5.5 m) or the discharge side with the pump mounted in the fan coil or 6 ft (1.8 m) on the suction side if the pump must be remote mounted. The pump mounts inside the unit with quick plug-in connections, and is recommended when adequate drain line pitch cannot be provided, or when the condensate must move up to exit.
NOTE: An external 115v power source will be required to run the pump on unit sizes 9k and 12k.
OUTDOOR UNITS
LOW AMBIENT KIT
The kit controls condenser fan cycling using a pressure switch. It is specifically designed to control fan-motor cycles in response to saturated condensing pressure. This device maintains a constant saturated condensing temperature of 100 _F ± 10 _F (37.78_C ± -12.22 _C) at outdoor-air temperatures between 55 _F and -20 _F (12.78_C ± -12.22_C), and can be used on all outdoor units without changing the outdoor fan motor.
CRANKCASE HEATER
Available for units with rotary compressors. Heater clamps around compressor oil sump. Recommended for low-ambient applications on sizes 9, 12 , 18, 24 and long line applications.
38/40MVC, MVQ
3
SPECIFICATIONS - COOLING ONLY UNITS
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System Model Number |
53MVC009--- --- ---1 |
53MVC012--- --- ---1 |
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53MVC012--- --- ---3 |
53MVC018--- --- ---3 |
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System |
System Voltage |
115 V |
115 V |
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208/230 |
208/230 |
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Capacity (Btuh) |
9000 |
12000 |
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12000 |
18000 |
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Control Voltage |
0 --- 12 Pulse DC |
0 --- 12 Pulse DC |
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0 --- 12 Pulse DC |
Pulse DC |
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SEER |
13.0 |
13.0 |
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13.0 |
13.0 |
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Refrigerant |
Refrigerant Type |
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R---410A |
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Charge (lb) |
2.3 |
2.9 |
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3.0 |
4.4 |
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Design Pressure (PSIG) |
550 |
550 |
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550 |
550 |
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Metering Device |
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Capillary Tube in Outdoor Unit |
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Compressor |
Type |
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Rotary |
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Model |
EA82X1C---1FZDU1 |
EA108X1C---1FZDU1 |
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PA108X1C---3FZDU |
PA150X2CS---3KUU |
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Oil Charge (POE ---oz) |
11.8 |
11.8 |
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11.8 |
25.4 |
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Capacitor |
45µF/250VAC |
45µF/250VAC |
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35µF/370VAC |
40µF/370VAC |
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Rated Current (RLA) |
7.5 |
9.9 |
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5.2 |
7.3 |
MVQ |
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Locked Rotor Amp (LRA) |
40 |
47 |
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21 |
32.6 |
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Outdoor Motor |
Rpm/CFM |
900/1060 |
900/1090 |
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900/1120 |
840/1470 |
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Diameter (in) .. No. of Blades |
15.8 … 3 |
15.8 … 3 |
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15.8 … 3 |
18.1 … 3 |
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38/40MVC, |
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Motor (hp) |
0.102 |
0.102 |
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0.102 |
0.224 |
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OutdoorCoil |
Circuits |
4 |
4 |
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4 |
4 |
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Capacitor |
6.5µF/260VAC |
6.5µF/260VAC |
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2.5µF/450VAC |
3µF/450VAC |
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Face Area (sq. ft) |
4.05 |
3.94 |
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3.94 |
5.51 |
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No. Rows |
2 |
2 |
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2 |
4 |
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Fins per inch |
17 |
17 |
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17 |
18 |
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Motor |
Motor Watts/HP |
20/.034 |
20/.034 |
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20/.034 |
25/.044 |
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Rpm/Cfm (High) |
1250/325 |
1270/425 |
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1270/425 |
1070/630 |
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Indoor |
Rpm/Cfm (Medium) |
1000/260 |
1100/365 |
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1100/365 |
1000/570 |
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Rpm/Cfm (Low) |
800/190 |
1000/340 |
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1000/340 |
960/500 |
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Blower Diameter … Length (in) |
3.84 … 25.87 |
4.17 … 25.2 |
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4.17 … 25.2 |
4.21 … 37.6 |
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Indoor |
Face Area (sq. ft) |
2.15 |
2.54 |
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2.54 |
4.36 |
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No. Rows |
2 |
2 |
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2 |
2 |
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Coil |
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Fins per inch |
19.5 |
19.5 |
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19.5 |
19.5 |
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Circuits |
2 |
3 |
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3 |
6 |
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Connection Type |
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Flare |
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Refrigerant Lines |
Liquid (Mix Phase) (in) OD |
1/4” |
1/4” |
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1/4” |
1/4” |
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Vapor Line (in) OD |
3/8” |
1/2” |
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1/2” |
1/2” |
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Condensate Drain (in) |
.65 (OD) .53 (ID) |
.65 (OD) .53 (ID) |
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.65 (OD) .53 (ID) |
.65 (OD) .53 (ID) |
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Maximum Length (ft) |
65 |
65 |
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65 |
100 |
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Max Lift (Fan Coil Above) (ft) |
35 |
35 |
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35 |
50 |
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Max Drop (Fan Coil Below) (ft) |
35 |
35 |
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35 |
50 |
4
SPECIFICATIONS - HEAT PUMP UNITS
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System Model Number |
53MVQ009--- --- ---1 |
53MVQ012--- --- ---1 |
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53MVQ012--- --- ---3 |
53MVQ018--- --- ---3 |
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System |
System Voltage |
115 V |
115 V |
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208/230 |
208/230 |
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Control Voltage |
0 --- 12 Pulse DC |
0 --- 12 Pulse DC |
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0 --- 12 Pulse DC |
Pulse DC |
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Capacity (Btuh) |
9000 |
12000 |
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12000 |
18000 |
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SEER |
13.0 |
13.0 |
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13.0 |
13.0 |
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HSPF |
7.7 |
7.7 |
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7.7 |
7.7 |
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Refrigerant |
Refrigerant Type |
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R---410A |
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Charge (lb) |
2.35 |
3.0 |
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3.0 |
550 |
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Design Pressure (PSIG) |
550 |
550 |
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550 |
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Metering Device |
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Capillary Tubes in Outdoor Unit |
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Compressor |
Type |
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Rotary |
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Model |
EA82X1C---1FZDU1 |
EA108X1C---1FZDU1 |
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PA108X1C---3FZDU |
PA150X2CS---3KUU |
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Oil Charge (POE ---oz) |
11.8 |
11.8 |
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11.8 |
25.4 |
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Capacitor |
45µF/250VAC |
45µF/250VAC |
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35µF/370VAC |
40µF/370VAC |
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Rated Current (RLA) |
7.5 |
9.9 |
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5.2 |
7.3 |
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Locked Rotor Amp (LRA) |
40 |
47 |
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21 |
32.6 |
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MVQ38/40MVC, |
MotorOutdoorCoil |
Rpm/CFM |
900/1060 |
900/1090 |
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900/1120 |
840/1470 |
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Diameter (in) .. No. of Blades |
15.8 … 3 |
15.8 … 3 |
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15.8 … 3 |
18.1 … 3 |
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Motor (hp) |
0.102 |
0.102 |
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0.102 |
0.224 |
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Capacitor |
6.5µF/260VAC |
6.5µF/260VAC |
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2.5µF/450VAC |
3µF/450VAC |
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Face Area (sq. ft) |
4.05 |
3.94 |
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3.94 |
5.51 |
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Outdoor |
No. Rows |
2 |
2 |
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2 |
4 |
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Fins per inch |
17 |
17 |
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17 |
18 |
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Circuits |
4 |
4 |
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4 |
4 |
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Motor Watts/HP |
20/.034 |
20/.034 |
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20/.034 |
25/.044 |
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Indoor Motor |
Rpm/Cfm (High) |
1250/325 |
1270/425 |
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1270/425 |
1070/630 |
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Rpm/Cfm (Medium) |
1000/260 |
1100/365 |
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1100/365 |
1000/570 |
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Rpm/Cfm (Low) |
800/190 |
1000/340 |
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1000/340 |
960/500 |
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Blower Diameter … Length (in) |
3.84 … 25.87 |
4.17 … 25.2 |
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4.17 … 25.2 |
4.21 … 37.6 |
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Indoor |
Face Area (sq. ft) |
2.15 |
2.54 |
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2.54 |
4.36 |
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Coil |
No. Rows |
2 |
2 |
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2 |
2 |
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Fins per inch |
19.5 |
19.5 |
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19.5 |
19.5 |
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Circuits |
2 |
3 |
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3 |
6 |
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Connection Type |
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Flare |
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Refrigerant |
Liquid (Mix Phase) (in) OD |
1/4” |
1/4” |
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1/4” |
1/4” |
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Lines |
Vapor Line (in) OD |
3/8” |
1/2” |
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1/2” |
1/2” |
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Maximum Length (ft) |
65 |
65 |
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65 |
100 |
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Condensate Drain (in) |
.65 (OD) .53 (ID) |
.65 (OD) .53 (ID) |
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.65 (OD) .53 (ID) |
.65 (OD) .53 (ID) |
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Max Lift (Fan Coil Above) (ft) |
35 |
35 |
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35 |
50 |
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Max Drop (Fan Coil Below) (ft) |
35 |
35 |
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35 |
50 |
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5
DIMENSIONS - INDOOR
38/40MVC, MVQ
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A07336 |
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Model Size |
W |
H |
D |
Weight lb (kg) |
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in. (mm) |
in. (mm) |
in. (mm) |
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9K |
32.09 (815) |
11.02 (280) |
7.68 (195) |
24.2 |
(11) |
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12K |
35.67 (906) |
11.26 (286) |
9.25 (235) |
33.0 |
(15) |
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18K |
49.21 (1250) |
12.80 (325) |
9.06 (230) |
55.0 |
(25) |
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24K |
49.21 (1250) |
12.80 (325) |
9.06 (230) |
55.0 |
(25) |
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DIMENSIONS - OUTDOOR
Air Flow
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L1 |
W |
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A07337 |
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Model Size |
W |
H |
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L1 |
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L2 |
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L3 |
Weight lb (kg) |
Weight lb (kg) |
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in. (mm) |
in. (mm) |
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in. (mm) |
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in. (mm) |
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in. (mm) |
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Cooling Only |
Heat Pumps |
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9K |
30.71 (780) |
21.26 (540) |
21.61 (549) |
11.81 (300) |
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10.87 (276) |
77.0 (35) |
79.2 (36) |
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12K |
29.92 (760) |
23.23 (590) |
20.87 (530) |
12.40 (315) |
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11.42 (290) |
85.8 (39) |
90.2 (41) |
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18K |
33.07 (840) |
27.36 (695) |
22.05 (560) |
14.17 (360) |
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13.19 (335) |
125.4 (57) |
125.4 (57) |
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24K |
31.16 (893) |
33.86 (860) |
23.11 (588) |
13.98 (355) |
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13.11 (333) |
159.5 (72) |
160.6 (73) |
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SERVICE VALVE LOCATIONS
9K |
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12K |
18K |
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K |
J |
K |
J |
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24K |
K |
K |
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J |
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A07376a |
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Service Valve Locations |
9K |
12K |
18K |
24K |
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in. (mm) |
in. (mm) |
in. (mm) |
in. (mm) |
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J |
3.46 (88) |
3.19 (81) |
3.46 (88) |
4.02 (102) |
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K |
3.46 (88) |
5.63 (143) |
3.62 (92) |
6.57 (167) |
6
CLEARANCES - INDOOR
6" (0.15m) min.
5" |
5" |
(0.13m) |
(0.13m) |
min. |
min. |
6' |
(1.8m) |
A07891
Fig. 2 – Indoor unit clearance
CLEARANCES - OUTDOOR
A
Air-inlet
E
D |
B |
C |
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Air-outlet |
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A07894 |
UNIT |
9k and 12k in. (mm) |
18k and 24k in. (mm) |
A |
24 (610) |
24 (610) |
B |
24 (610) |
36 (914) |
C |
24 (610) |
24 (610) |
D |
4 (102) |
12 (305) |
E |
12 (305) |
12 (305) |
Fig. 3 – Outdoor Unit Clearance
38/40MVC, MVQ
7
SYSTEM OPERATING ENVELOPE
38/40MVC, MVQ
53MVC/MVQ System Operating Envelope Chart
Indoor Temperature (ºF)
-40 -35 -30 -25 -20
120
110
100
90
80 80ºF
70
60
50 5ºF
40
-10 |
0 |
10 |
20 |
Outdoor Temperature (ºC)
-15 -10 |
-5 |
0 |
5 |
10 |
15 |
20 |
25 |
30 |
35 |
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Cooling |
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Continuous |
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Heating |
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Operation |
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Continuous |
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Operation |
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55ºF |
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55º |
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75ºF |
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30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
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Outdoor Temperature (ºF) |
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40 45 50 55 60
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60 |
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55 |
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50 |
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45 |
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40 |
(ºC) |
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35 |
Temperature |
85º |
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30 |
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25 |
Indoor |
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20 |
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62ºF |
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15 |
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125º 10
5
0 110 120 130 140
Use low ambient control if the unit will operate in cooling at ambient conditions below 55_F (12.78_C).
A08180
Fig. 4 – System Operating Enevelope
ELECTRICAL DATA
UNIT |
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OPERATING |
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COMPRESSOR |
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OUTDOOR FAN |
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INDOOR FAN |
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MAX |
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MCA |
FUSE/CB |
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SIZE |
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MAX/MIN |
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VOLTS---PH---HZ |
RLA |
LRA |
FLA |
HP |
W |
VOLTS |
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FLA |
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HP |
W |
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AMP |
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009 |
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127/104 |
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115---1---60 |
7.5 |
40 |
0.60 |
0.102 |
23 |
35 DC |
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1.1 |
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0.034 |
20 |
12 |
20 |
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012 |
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9.9 |
47 |
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1.18 |
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0.044 |
25 |
15 |
25 |
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012 |
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5.2 |
21 |
0.38 |
0.116 |
36 |
35 DC |
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1.18 |
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0.044 |
25 |
9 |
15 |
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018 |
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253/187 |
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208/230---1---60 |
7.3 |
32.6 |
0.78 |
0.224 |
53 |
208/230---1---60 |
0.26 |
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0.075 |
31 |
11 |
20 |
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024 |
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9.7 |
34.8 |
0.62 |
0.218 |
100 |
0.39 |
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0.112 |
50 |
14 |
25 |
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*Permissible limits of the voltage range at which the unit will operate satisfactorily |
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LEGEND |
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FLA--- |
Full Load Amps |
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LRA --- |
Locked Rotor Amps |
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MCA --- |
Minimum Circuit Amps |
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RLA --- |
Rated Load Amps |
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8
WIRING
The main power is supplied to the outdoor unit. The field supplied connecting cable from the outdoor unit to indoor unit consists of four wires and provides the power for the indoor unit as well as the communication signal between the outdoor unit and indoor unit.
Voltage drop on the connecting cable should be kept to a minimum. Use cable size and max length below:
18 AWG |
50 ft. (16 m) |
16 AWG |
100 ft. (33 m) |
CONNECTION DIAGRAMS
CONNECTING CABLE
CONTROL
CONTROL
38/40MVC, MVQ
CONNECTING CABLE
CONNECTING CABLE
Notes:
1.Do not use thermostat wire for any connection between indoor and outdoor units.
2.All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity.
3.On the 18k and 24k units, the “S” terminal “CONTROL” output is pulse DC with a potential AC voltage shock hazard.
A07654
Fig. 5 – Connection Diagrams
9
38/40MVC, MVQ
WIRING DIAGRAMS
10
Fig. 6 – Wiring Diagram 38MVC009----1 W/ 40MVC009----1
WIRING DIAGRAMS (CONT.)
11
Fig. 7 – Wiring Diagram 38MVC012----1 W/ 40MVC012----1
38/40MVC, MVQ
38/40MVC, MVQ
WIRING DIAGRAMS (CONT.)
12
Fig. 8 – Wiring Diagram 38MVC012----3 W/ 40MVC012----3
WIRING DIAGRAMS (CONT.)
13 |
Fig. 9 – Wiring Diagram 38MVC018----3 W/ 40MVC018----3
38/40MVC, MVQ
38/40MVC, MVQ
WIRING DIAGRAMS (CONT.)
14 |
Fig. 10 – Wiring Diagram 38MVQ009----1 W/ 40MVQ009----1 |
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