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Service Reference Manual
HWC Thru-the-Wall Units
Models:
HWC Premier
122, 182, 242, 302
123, 183, 243, 303
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Copyright © 1998 Armstrong Air Conditioning Inc. All rights reserved. Disclaimer This manual presents information and guidelines for proper installation, adjustment, operation and maintenance of Armstrong Magic-Pak HW/HWC Thru-the-Wall units. Read this manual before attempting assembly, installation, start-up, adjustment or operation of the unit. If you have any questions about the operation of the unit or a particular safety device, call or write Arm- strong Air Conditioning Inc., 421 Monroe S
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Service Reference Manual TABLE OF CONTENTS TABLE OF CONTENTS 1 - Specifications 2 - Sequence of Operations 3 - Unit Tear Down 4 - Component Location Illustrations 5 - Unit Components 6 - Installation 7 - Accessories 8 - Parts Lists 9 - Troubleshooting/Performance/ Charge Weights Go to: If you need information on: Section 1 Performance, electrical data and cabinet dimensions. Section 2 Sequence of operation descriptions with accompanying schematics. Section 3 Complete description of unit disassem
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Service Reference Manual SPECIFICATIONS 1-1 Section 1 - Specifications Models Covered By This Manual ............ 1-2 Model Number Guide ............................1-2 Product Serial Numbers (Beginning 1993) ................................. 1-2 Summary of Model Revisions/Variations 1-3 Heating Configuration Table ........................ 1-3 Cooling Configuration Table ......................... 1-3 HW/HWC ............................................ 1-4 Physical and Electrical ................
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SRM-HW/HWC 8/99 SPECIFICATIONS Magic-Pak: HW/HWC 1-2 Models Covered By This Manual HWC Gas Heating/Electric Cooling Units HW122, 123 HW182,183 HW242, 243 HW302, 303 HW Gas Heating Only Units 26HW 38HW 51HW 64HW Model Number Guide HW/HWC Models 26 H W C 12 2 -- 2A 26 = Rated Input BTU/Hr x 1000 H = Gas Heat W = Thru-the-Wall C = Cooling 12 = Nominal Cooling BTU/Hr x 1000 2 = Cooling Efficiency 2 - 9.7 SEER 2A = Revision Code Product Serial Numbers, Beginning 1993 84 95 A 12345 84 = Armstrong
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Service Reference Manual SPECIFICATIONS 1-3 Summary of Model Revisions/Variations Table 1-1 Heating Configurations of HW/HWC Units Ignition Mn odel CE onfiguratioAl FU Ignition/Blower Contro Type Gas Heat/ (All) HWC (123, 183, 243, 303) -187 0UI Tech Combination Ignition/Blower Control 109 DS Electric Cool (y All) HW -9 G0 as Heat Onl87UI Tech Combination Ignition/Blower Control 109 DS Ignition Control: Fenwal Triton 2461D (All) HWC (122, 182, 242, 302) Gas Heat/ 80 Blower Control: Heatcraft IBC
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SRM-HW/HWC 8/99 SPECIFICATIONS Magic-Pak: HW/HWC 1-4 HW/HWC Physical and Electrical Table 1-3 Physical and Electrical Specifications - HWC Units Outside Indoor Max. Comp. Comp. O.D. Normal Min. Fan Wheel Blower Refrig. Voltage/ Fuse/HACR Rated Locked Fan Nom. Rated Weight Model Voltage Circuit Rated dia. x Rated Charge Hz/Phase Brkr. Load Rotor Dia. RPM HP (lbs.) Range Ampacity Load width HP (oz.) (amps) (amps) (amps) (in.) (amps) (in.) 21 6HWC122/12323 08-230/60/13 97-25 85 . 1053 . 28 6. 1519
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Service Reference Manual SPECIFICATIONS 1-5 Performance Ratings (continued) Table 1-5 Performance Ratings - HWC182/183 Outdoor Air Temperature Entering Outdoor Coil 85° 95° 105° 115° Total Total S/T at S/T at S/T at Total S/T at S/T at S/T at Total S/T at S/T at S/T at Total S/T at S/T at S/T at Enter. Comp. Comp. Comp. Comp. Air Cooling 75° 80° 85° Cooling 75° 80° 85° Cooling 75° 80° 85° Cooling 75° 80° 85° Wet Watts Watts Watts Watts Vol. Capacity Dry Dry Dry Capacity Dry Dry Dry Capacity Dry
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" SRM-HW/HWC 8/99 " " 27 7 /8 SPECIFICATIONS Magic-Pak: HW/HWC 1-6 Blower Performance Table 1-8 Blower Performance - HWC Units CFM @ ext. static pressure - in. w.c. with filter(s) Model Blower Speed 0.2 0.3 0.4 0.5 H0 i 65 5 65 1 50 7 54 HWC122/123 M5 ed 40 7 45 5 40 2 40 L5 ow 45 1 40 0 30 9 38 Hi 875 825 775 725 HWC182,242,302 Med 850 805 760 710 HWC183,243,303 Low 630 605 575 550 Dimensions (all measurements in inches) SUPPLY AIR DUCT CONNECTION LOW VOLTAGE 8" x 16" THERMOSTAT CONNECTIONS HIG
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Service Reference Manual SPECIFICATIONS 1-7 Dimensions (cont.) 3 13 / 8 1 16 1 8 Supply Line Voltage Box Low Voltage 1 43 / 8 Supply 8 7 4 2 / 8 3 1 /4 ½ Gas Inlet 3 Return 1 7 2 / 8 22 6 7 7 27 / 8 29 /16 Wall Sleeve (all measurements in inches) 3 1 or 3 4 1 15 or 12 4 2 16 45 2 29 1 12 " 2 Flanges may be assembled 3 " 1" or 3 fr 4 om this side of the sleeve SRM-HW/HWC 8/99
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Service Reference Manual SEQUENCE OF OPERATIONS 2-1 Section 2 - Sequence of Operation HWC123,183,243,303........................ 2-4 Simplified Sequence ........................................ 2-5 Detailed Sequence .......................................... 2-6 POWER ...................................................................... 2-6 CALL FOR HEAT ........................................................ 2-6 LIMIT/ROLLOUT OPENS ........................................... 2-7 PRESSURE SWIT
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SRM-HW/HWC 2/99 SPECIFICATIONS Magic-Pak: HW/HWC 2-2 HWC122,182,242,302 (w/Fenwal 05-29 Ignition Control).......2-26 Simplified Sequence ...................................... 2-27 Detailed Sequence ........................................ 2-28 POWER .................................................................... 2-28 CALL FOR HEAT ...................................................... 2-28 FLAME SENSE......................................................... 2-29 LIMIT OPENS ...............
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Service Reference Manual SEQUENCE OF OPERATIONS 2-3 BLANK PAGE SRM-HW/HWC 2/99
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SRM-HW/HWC 2/99 RED YELLOW BLUE 24VAC UNUSED ORN HEAT COOL BLACK L1 Y C W G R CMB WHITE GREEN RED PRESSURE SWITCH BLACK BLACK BLACK BLACK BLACK RED D } SPECIFICATIONS Magic-Pak: HW/HWC 2-4 HWC123, 183, 243, 303 (w/United Technologies 1097 Spark Ignition System) CONNECTI CONNECTIO ON DI N DIA AG GRAM RAM CIRCUITS ENERGIZED 208/230-1-60 COPPER CONDUCTORS OPERATING MODE CIRCUIT POWER SUPPLY ONLY HEATING R-W YELLOW COOLING R-G-Y RED FAN R-G BLUE LINE VOLTAGE-FACTORY BLACK LINE VOLTA
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Service Reference Manual SEQUENCE OF OPERATIONS 2-5 Simplified Sequence - HWC123,183, 243, 303 Refer to Figure 2-1 • 208/230V power is supplied to the junction box on CALL FOR COOLING top of the unit 1. The thermostat energizes the R, Y and G circuit, • 24V power is supplied from the unit transformer to sending a 24-volt signal to the cooling contactor and the thermostat the ignition control to start the cooling sequence. 2. The contactor closes immediately, causing the compressor and the conden
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SRM-HW/HWC 2/99 SPECIFICATIONS Magic-Pak: HW/HWC 2-6 Detailed Sequence - HWC123, 183, 243, 303 Refer to Figure 2-1 POWER control. This causes the combustion blower to start by completing the line voltage circuit through Line Voltage the L2 wire connection in the unit. 2. As the 24-volt signal is sent to pin 4 of the 6-pin With the unit at rest (no call from the thermostat), line ignition wire harness by the ignition control, a 30- voltage will be present: second circulating air blower “on” dela
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Service Reference Manual SEQUENCE OF OPERATIONS 2-7 9. After 30-second “on” delay, the circulating air 7. The green ignition control LED shows a 4 flash fault blower relay energizes the heat terminal and the code (indicating limit switch/rollout switch open). circulating air blower is energized. 8. When the 24-volt signal is restored at pin 1 of the 6- 10. The unit will continue to operate normally until the pin ignition wire harness, the ignition control starts R-W circuit is interrupted. a 5-s
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SRM-HW/HWC 2/99 SPECIFICATIONS Magic-Pak: HW/HWC 2-8 8. The 24-volt signal will only be supplied to the limit CALL FOR COOLING switch circuit through pin 6 of the 6-pin ignition wire harness and to the pressure switch circuit through Line Voltage pin 2 of the 6-pin ignition wire harness. 9. The system will repeat this sequence until the 1. L2 power passes through the fixed closed L2-T2 pressure switch closes and the 24-volt signal is terminals on the contactor to the RUN terminal of restored at
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Service Reference Manual SEQUENCE OF OPERATIONS 2-9 6. After the 90-second delay, the ignition control de- energizes the cooling speed relay and the circulat- ing air blower stops. FAN ON 1. When the thermostat is switched to the “FAN ON” position, the R-G circuit sends a 24-volt signal to pin 4 of the 5-pin thermostat harness. 2. The 24-volt signal energizes the cooling speed relay, sending L1 power to the ACB COOL terminal of the ignition control. 3. L1 power is sent to the circulating air blo
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SRM-HW/HWC 2/99 RED YELLOW BLUE 24VAC UNUSED HEAT ORANGE COOL L1 CNB Y C W G R WHITE GREEN RED PRESSURE SWITCH BLACK BLACK BLACK BLACK BLACK } SPECIFICATIONS Magic-Pak: HW/HWC 2-10 HW (Heating Only) (w/United Technologies 1097 Spark Ignition System) CONNECTION DIAGRAM WIRE NUT CIRCUITS ENERGIZED OPERATING MODE CIRCUIT 208/230-1-60 COPPER CONDUCTORS HEATING R-W COOLING R-G-Y POWER SUPPLY ONLY YELLOW FAN R-G RED BLUE LINE VOLTAGE-FACTORY LINE VOLTAGE-FACTORY WHEN USED BLACK LINE V
