McQuay AHP090APEY Installation Manual

Installation and Maintenance Manual IM-811

AHP Split System Heat Pump

7-1/2 & 10 TON

Group: Unitary

Part Number: IM-811

Date: August 2005

Supersedes: March 2005

© 2004 McQuay International

IM-811 Page 1

Table of Contents

MODEL NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . 3

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

GENERAL WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . 5

PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 6

DUCKWORK CONSIDERATIONS . . . . . . . . . . . . . . . . . 6

SITE SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

TYPICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 7

RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

UNIT CORNER WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . 7

REFRIGERANT TUBING . . . . . . . . . . . . . . . . . . . . . . . . . 7

ELECTRICAL WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . .9

SYSTEM EVACUATION AND CHARGING . . . . . . . . .11

SYSTEM EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . .12

PRELIMINARY CHARGE ADJUSTMENT . . . . . . . . . .12

FINAL CHARGE ADJUSTMENT . . . . . . . . . . . . . . . . . .13

EXPANSION VALVE INDOOR COILS . . . . . . . . . . . . .14

DEFROST CONTROL (DC) . . . . . . . . . . . . . . . . . . . . . . .14

TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .15

TROUBLE SHOOTING - Heating . . . . . . . . . . . . . . . . . .16

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

"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

Page 2 IM-811

design and construction at any time without notice."

MODEL NOMENCLATURE

M

A

N

0
1

0

A

odel

HP = Air Cooled Heat Pump

ominal Capacity (tons)

90 = 7-1/2
20 = 10

Table 1: Unit Nameplate Model Number Identifier

Unit Nameplate McQuay Model Number

CPLE090-3C AHP090APEY
CPLE090-4C AHP090AQEY
CPLE120-3C AHP120APEY
CPLE120-4C AHP120AQEY

AHP 090

PEY

Future Use
EER

E = 10.1

Voltage/Phase

P = 208-230/3/6
Q = 460/3/60

Vintage

IM-811 Page 3

INTRODUCTION

General Description

These installation instructions cover the outdoor installation of
split system heat pumps from 7-½ to 10 tons. See the product
catalog applicable to your model for information regarding
specifications applicable to your model and accessories.

Receiving Inspection

McQuay products are carefully inspected prior to shipment
and the carrier has assumed responsibility for loss or damage
upon acceptance of the shipment.

Upon receiving your shipment, check all items carefully
against the Bill of Lading. Inspect the unit and/or accessories
for shipping damage as soon as they are received. Immedi
ately file claims for loss or damage, either shipping or con­cealed, with the shipping company.

Check the unit nameplate to verify the model number and elec­trical characteristics are correct. In the event an incorrect unit
is shipped, it must be returned to the supplier and must NOT
be installed. The manufacturer disclaims all responsibility for
the installation of incorrectly shipped units.

Codes and Regulations

This product is designed and manufactured to permit installa­tion in accordance with National Codes. System design should,
where applicable, follow information presented in accepted
industry guides such as the ASHRAE Handbooks. It is the
installer' s responsibility to install the product in accordance
with National Codes and/or prevailing local codes and regula
tions. The manufacturer disclaims all responsibility for equip-

ment installed in violation of any code or regulations.

Important Message to the Owner

Read these instructions carefully and keep them near the prod­uct for future reference. Although these instructions are
addressed primarily to the installer, useful maintenance infor
mation is included. Have the installer acquaint you with the
operation of the product and periodic maintenance require
ments.

Recognize Safety Symbols, Words, and Labels

The following symbols and labels are used throughout this
manual to indicate immediate or potential hazards. It is the
owner's and installer's responsibility to read and comply with

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all safety information and instructions accompanying these
symbols. Failure to heed safety information increases the risk
of property damage and/or product damage, serious personal
injury or death. Improper installation, operation and mainte
nance can void the warranty.

DANGER

Immediate hazards which WILL result in property
damage, product damage, severe personal injury and/
or death.

WARNING

-

Hazards or unsafe practice CAN result in property
damage, product damage, sever personal injury and/or
death.

-

-

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IMPORTANT

The United States Environmental Protection Agency
(EPA) regulations cover introduction and disposal of
refrigerants in this unit. Failure to follow those
regulations can harm the environment and lead to
substantial fines. Because regulations can change, a
certified technician should perform any work done on
this unit. If you have any questions, please contact the
local office of the EPA.

Important Message to the Installer

This equipment is to be installed by an experienced installation
company and fully trained personnel. Carefully read all
instructions and take into account any special considerations
prior to installing the unit. Give this manual to the owner and
explain its provisions.

CAUTION

Hazards or unsafe practices which CAN result in
property damage, product damage, and/or personal
injury.

Replacement Parts

Replacement parts can be obtained by contacting McQuay at
1

-800-37-PARTS. When contacting McQuay for service or
replacement parts, refer to the model number and serial num
ber of the unit as stamped on the nameplate attached to the
unit.

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Page 4 IM-811

GENERAL WARNINGS

WARNING

Before servicing or installing this equipment, the
electrical power to this unit must be in the "OFF"
position. More than one disconnect may exist. Failure
to disconnect power can cause electrical shock, serious
personal injury or death.

WARNING

The unit must have an uninterrupted, unbroken
electrical ground. Failure to properly ground can cause
severe personal injury or death.

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.

WARNING

When installing or servicing this equipment wear
protective gloves, gear and eyeware. Also observe
special safety requirements (hard hats etc.).

CAUTION

To protect the unit when welding close to the painted
surfaces, use a quenching cloth to prevent scorching or
marring of the equipment finish.

IM-811 Page 5

PRODUCT DESCRIPTION

When matched with the appropriate air handler(s) or evapora­tor coil(s) the AHP090/120 heat pump complies with the mini­mum efficiency equirements found in ASHRAE 90.1-1999.
See the product catalog for the indoor model selection recom
mendation.

Units operate in the same manner as most heat pumps. How­ever, these products use a TXV in lieu of a flowrater/piston
system for refrigerant management.

Units are intended for use with a single stage room thermo­stat. This thermostat is not supplied with this equipment. Only
thermostats that use 24-volt control circuitry are to be used.

Table 2: Physical Data

Net Weight (Lbs.) 365 415

Shipping Weight (Lbs.) 390 440

Refrigerant R-22

Compressor Type Scroll

Quantity 1

Oil Charge Initial/Recharge 85/81 110/106

Condenser Fan Type Propeller

Fan Diameter (in) 26

Fan Motor Type Direct Drive PCS

Fan Motor (HP) 1

Fan Motor (RPM) 110 0

Nominal Cond. Airflow (CFM) 6600

Condenser Coil Material Riffled Copper Tubes / Al Fins

Face Area (Ft2)

Refrigerant Connections Sweat Type

Suction Line Connection (in) 1-3/8

Liquid Line Connection (in) 5/8

High Pressure Control (PSIG) 425 Cut-out / Manual Reset

Low Pressure Control (PSIG) 7 Cut-out / 25 Cut-in

Thermal Expansion Valve 1

AHP090 AHP120

30

DUCKWORK CONSIDERATIONS

For proper performance, size the indoor ductwork to accom­modate 375-425 CFM per ton of cooling with a static pressure
not to exceed .5" WC. Inadequate ductwork that restricts air
flow can result in improper cooling performance and compres­sor failure.

SITE SELECTION

This unit is designed for outdoor installations only.

Air Supply

Units are air-cooled heat pumps. To provide optimum unit
performance, the installation site should provide unobstructed
airflow. See Figure 1 for minimum clearances from other air­cooled condensers/heat pumps and obstructions such as walls
or overhangs.

Figure 1. Recommended Clearances

60"

12"

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12"

24"

Refrigerant System Requirements

The selected site should be no greater than 50’ below or 70’
above the evaporator section. For optimum performance, use
the minimum length of interconnecting tubing. Where possi
ble, minimize the amount of bends and turns.

Wiring and Tubing Protection

Electrical wiring and refrigerant tubing is to be protected from
damage due to incidental contact, such as being walked upon.

Vibration and Sound Control

Units are engineered to produce the minimum sound and
vibration. To minimize sound or vibration issues, securely
mount the unit to a surface that is:

•Solid

• Greatest practical mass

•Ridged

• Minimum radiating surface

Where possible, the slab for a ground level unit should not be

­connected to the wall or the building.

Prohibited Locations

Do not locate this unit in the following locations:

• Inside a building

• Directly under a vent termination from a gas appliance

• Within 3 feet of a gas appliance vent

• Where water may rise into the unit

12"

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Note: Adequate service clearances must also be consid-

ered.

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