Related Manuals for McQuay IM-811
Summary of Contents for McQuay IM-811
- Page 1 Installation and Maintenance Manual IM-811 Group: Unitary Part Number: IM-811 Date: August 2005 Supersedes: March 2005 AHP Split System Heat Pump 7-1/2 & 10 TON © 2004 McQuay International IM-811 Page 1...
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Page 2: Table Of Contents
"McQuay" is a registered trademark of McQuay International. © 2004 McQuay International "Illustrations and information cover the McQuay International products at the time of publication and we reserve the right to make changes in design and construction at any time without notice."... -
Page 3: Model Nomenclature
E = 10.1 Nominal Capacity (tons) 090 = 7-1/2 Voltage/Phase 120 = 10 P = 208-230/3/60 Q = 460/3/60 Vintage Table 1: Unit Nameplate Model Number Identifier Unit Nameplate McQuay Model Number CPLE090-3C AHP090APEY CPLE090-4C AHP090AQEY CPLE120-3C AHP120APEY CPLE120-4C AHP120AQEY IM-811... -
Page 4: Introduction
Replacement Parts regulations can harm the environment and lead to substantial fines. Because regulations can change, a Replacement parts can be obtained by contacting McQuay at certified technician should perform any work done on 1-800-37-PARTS. When contacting McQuay for service or this unit. -
Page 5: General Warnings
DANGER Installation and service by trained, qualified technicians only. High pressure and electricity can cause severe personal injury or death. Observe ALL warnings contained in this manual and the labels/tags attached to the equipment. IM-811 Page 5... -
Page 6: Product Description
• Where water may rise into the unit performance, the installation site should provide unobstructed airflow. See Figure 1 for minimum clearances from other air- cooled condensers/heat pumps and obstructions such as walls or overhangs. Note: Adequate service clearances must also be consid- ered. Page 6 IM-811... -
Page 7: Typical Installation
AHP120 1-1/8 1-5/8 1-5/8 1-5/8 rules. When the unit is in position, the wooden shipping skid L = Liquid Line S = Suction Line and all lifting materials must be removed. * = Full Rating Line Size IM-811 Page 7... - Page 8 (1/2" per 10’) toward the condensing unit (see Figure 6). Figure 6. Suction Line Pitch CONDENSING UNIT PITCH SUCTION LINE TOWARD OUTDOOR UNIT 1/2" FOR EVERY 10' OF LINE EVAPORATOR BLOWER LIQUID LINE Page 8 IM-811...
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Page 9: Electrical Wiring
(USA) or CEC (Canada) when sizing the service wire for this unit. =649 / 3 =216 Max. Deviation from Avg. =220 - 216 = 4 % Voltage Unbalance = 100 x 4 / 216 = 400 / 216 = 1.8% IM-811 Page 9... -
Page 10: Low Voltage Connections
Code (NEC)/American National Standards Institute (ANSI)/ National Fire Protection Association (NFPA) 70 and local/state codes. In Canada, electrical grounding is to be in accordance ORANGE with the Canadian Electric Code CSA C22.1. BROWN WHITE WHITE BLUE BLUE Page 10 IM-811... -
Page 11: System Evacuation And Charging
Mark these locations. 6. Use the gauge manifold to carefully release the nitrogen from the system. If leaks are found, repair them. After repair, repeat the above pressure test. If no leaks exist, proceed to system evacuation. IM-811 Page 11... -
Page 12: System Evacuation
Turn the electrical power on, and let the system run. Wait for A. LOW SIDE VALVE the refrigerant pressures to stabilize. B. HIGH SIDE VALVE C. VACUUM PUMP D. THERMOCOUPLE GAUGE E. MANIFOLD GAUGE F. CHARGING CYLINDER HIGH VACUUM PUMP Page 12 IM-811... -
Page 13: Expansion Valve Indoor Coils
B. Check unit for proper charge. 5. Using an additional electronic thermometer, measure the Note: Bands of frost indicate low refrigerant charge. ambient. C. Shut off power to unit. IM-811 Page 13... -
Page 14: Trouble Shooting
Improper phase can damage equipment. If the unit sounds noisy and/or the suction and liquid pressures are almost equal, the compressor is operating in the reverse rotation. Reverse the two (2) incoming power supply leads. SHUNT SELECTION JUMPER Page 14 IM-811... -
Page 15: Trouble Shooting - Heating
Replace the reversing valve Poor Termination of Defrost The defrost sensor must make good contact with the outside coil return bend or a non-termination of defrost may occur. IM-811 Page 15... -
Page 16: Wiring Diagram
WIRING DIAGRAM Page 16 IM-811... - Page 17 IM-811 Page 17...
- Page 20 This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.mcquay.com. www.mcquay.com • 800-432-1342...