McQuay MPS006AYCL Installation Manual

Maverick I™
Commercial Packaged Rooftop System
Cooling Only or Heating & Cooling

Electric/Electric

Model MPS006AY
6 Tons

Installat

ion and Maintenance Manual

IM 865

Group: Applied Systems

Part Number: 92-102421-04-00

Date: March 2007

© 2007 McQuay International

2 IM 865

Table of Contents

Table of Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Checking Product Received . . . . . . . . . . . . . . . . . . . . 3

Equipment Protection . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pre-Installation Check Points . . . . . . . . . . . . . . . . . . . . . . . . 6

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Outside Slab Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Rooftop Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

General Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Conversion Procedure . . . . . . . . . . . . . . . . . . . . . . . 11

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Downflow to Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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

Indoor Air Flow Data . . . . . . . . . . . . . . . . . . . . . . . . . 13

Pre-Start Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Auxiliary Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Control System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Charge Information . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

IM 865

3

Introduction

This manual contains the installation and operating instruc­tions for your packaged rooftop unit. There are a few precau­tions that should be taken to derive maximum satisfaction
from it. Improper installation can result in unsatisfactory oper­ation or dangerous conditions.

Read this manual and any instructions packaged with separate
equipment required to make up the system prior to installation.
Give this manual to the owner and explain its provisions. The
owner should retain this manual for future reference.

Checking Product Received

Upon receiving the unit, inspect it for any damage from ship­ment. Claims for damage, either shipping or concealed, should
be filed immediately with the shipping company. Check the
unit model number, electrical characteristics, and accessories
to determine if they are correct.

Equipment Protection From The
Environment

The metal parts of this unit may be subject to rust or deteriora­tion in adverse environmental conditions. This oxidation could
shorten the equipment’s useful life. Salt spray, fog or mist in
seacoast areas, sulphur or chlorine from lawn watering sys­tems, and various chemical contaminants from industries such
as paper mills and petroleum refineries are especially corro­sive.

If the unit is to be installed in an area where contaminants
are likely to be a problem, special attention should be
given to the equipment location and exposure.

1 Avoid having lawn sprinkler heads spray directly on the

unit cabinet.

2 In coastal areas, locate the unit on the side of the building

away from the waterfront.

3 Shielding provided by a fence or shrubs may give some

protection.

Regular maintenance will reduce the buildup of contami­nents and help to protect the unit’s finish.

1 Frequent washing of the cabinet, fan blade and coil with

fresh water will remove most of the salt or other contami­nants that build up on the unit.

2 Regular cleaning and waxing of the cabinet with a good

automobile polish will provide some protection.

3 A good liquid cleaner may be used several times a year to

remove matter that will not wash off with water.

Several different types of protective coatings are offered in
some areas. These coatings may provide some benefit, but the
effectiveness of such coating materials cannot be verified by
the equipment manufacturer.

The best protection is frequent cleaning, maintenance and
minimal exposure to contaminants.

Recognize this symbol as an indication of
Important Safety Information!

!

The manufacturer’s warranty does not cover any damage or
defect to the air conditioner caused by the attachment or
use of any components, accessories or devices (other than
those authorized by the manufacturer) into, onto or in con­junction with the air conditioner. You should be aware that
the use of unauthorized components, accessories or
devices may adversely affect the operation of the air condi­tioner and may also endanger life and property. The manu­facturer disclaims any responsibility for such loss or injury
resulting from the use of such unauthorized components,
accessories or devices.

▲▲

DANGER

!

Proposition 65: This unit contains fiberglass insulation.
Respirable particles of fiberglass are known to the state of
California to cause cancer.

▲▲

WARNING

!

Disconnect all power to the unit before starting mainte­nance. Failure to do so can result in severe electrical shock
or death.

▲▲

DANGER

!

4 IM 865

Figure 1: Unit Dimensions Bottom View

Figure 2: Unit Dimensions

ILL 1316

ILL1305

26

78.25

81.53

2

2

2

30.25

BASE ELECTRICAL
ENTRY

CONDENSER
COIL

CONDENSER COIL

CONROL ENTRY

COMPRESSOR/

CONTROL BOX

ACCESS

ELECTRIC HEAT ACCESS

CONDENSER FAN
DISCHARGE GRILLE

POWER
ENTRY

RETURN

AIR

SUPPLY

AIR

9.56

44.13

46.5

4.5

3.25

4.5

13.13

20

13.13

2.25

4.63

14.44

2

35

11.13

18.19

7.22

IM 865

5

Figure 3: Unit Dimensions

Figure 4: Unit Dimensions – Back View

ILL 1304

ILL 1288

82.25

25.13

12.25

5.5

19.13

4.94

6.84

13.72

12.25

35

31.22

3.81

82.25

24.03

48.06

5.34

COIL/FILTER

ACCESS

BLOWER

ACCESS

CONDENSATE DRAIN

3/4” NPT FEMALE

RETURN COVER/

OPTIONAL OUTDOOR

AIR HOOD LOCATION

SUPPLY COVER

6 IM 865

Installation

General

1 PRE-INSTALLATION CHECK-POINTS

Before attempting any installation, the following points
should be carefully considered:

a Structural strength of supporting members.

(rooftop installation)

b Clearances and provision for servicing.
c Power supply and wiring.
d Air duct connections.
e Drain facilities and connections.
f Location for minimum noise.

2 LOCATION

These units are designed for outdoor installations. They
can be mounted on a slab or rooftop. They are not to be
installed within any part of a structure such as an attic,
crawl space, closet, or any other place where condenser
air flow is restricted or other than outdoor ambient condi­tions prevail. Since the application of the units is of the
outdoor type, it is important to consult your local code
authorities at the time the first installation is made.

Outside Slab Installation

(Typical outdoor slab installations are shown in Figures 5 and 6.)

1 Select a location where external water drainage cannot

collect around the unit.

2 Provide a level concrete slab extending 3" beyond all four

sides of the unit. The slab should be sufficient above
grade to prevent ground water from entering the unit.

IMPORTANT: To prevent transmission of noise or vibration,
slab should not be connected to building structure.

3 The location of the unit should be such as to provide

proper access for inspection and servicing.

4 Locate unit where operating sounds will not disturb owner

or neighbors.

5 Locate unit so roof runoff water does not pour directly on

the unit. Provide gutter or other shielding at roof level. Do
not locate unit in an area where excessive snow drifting
may occur or accumulate.

Clearances

The following minimum clearances must be observed for
proper unit performance and serviceability.

1 Provide 12" minimum clearance at the front of the unit.

Provide 36" minimum clearance at the left and 18" on the
right side of the unit for service access.

2 Provide 60" minimum clearance between top of unit and

maximum 3 foot overhang.

3 Unit is design certified for application on combustible

flooring with 0" minimum clearance.

4 See Figure 5 for illustration of minimum installation-ser-

vice clearances.

*5 When used with economizer, 12" minimum dimension at

unit front becomes 57".

Figure 5: Outside Slab Installation, Basement or Crawl
Space Distribution System

Figure 6: Outside Slab Installation, Closet Distribution
System. Slab Floor Construction

ILL I308

ILL I309

*12ⴖ

18 ⴖ

*

IM 865

7

Rooftop Installation

1 Before locating the unit on the roof, make sure that the

strength of the roof and beams is adequate at that point to
support the weight involved. (See specification sheet for
weight of unit.) This is very important and user’s respon­sibility.

2 For rigging and roofcurb details, see Figures 7 and 8. Use

field-furnished spreaders.

NOTE: Remove shipping boards from unit before installing
on the roofcurb.

3 For roofcurb assembly, see Roofcurb Installation Instruc-

tions.

4 If the roofcurb is not used, provisions for disposing of

condensate water runoff must be provided.

5 The unit should be placed on a solid and level roofcurb or

platform of adequate strength. See Figure 9.

6 The location of the unit on the roof should be such as to

provide proper access for inspection and servicing.

IMPORTANT: If unit will not be put into service immediately, cover
supply and return openings to prevent excessive condensation.

Figure 8: Packaged Air Conditioner Roofcurb Installation

Figure 7: Packaged Air Conditioner Rigging For Lifting

CORNER WEIGHTS BY PERCENTAGE

ABCD

23% 29% 21% 27%

I296

SPREADER BAR

A

C

B

LIFTING BEAM

5/8ⴖ SHACKLE

(EACH CORNER)

39ⴖ

26-1/8

CENTER OF

GRAVITY

D

SUPPLY

RETURN

NAILING STRIP

OVERHANG

THIS END

ONLY

6-1/4ⴖ

*

NOTE

RETURN DUCT*

UNIT

SUPPLY DUCT*

INSULATION PANELS
(4) SUPPLIED

ST-A0801-20-01

GASKET
(FULL PERIMETER
AND ON DIVIDERS.
MUST BE ABOVE DUCT
AND INSULATION
PANEL FLANGES.)

ST-A0801-20-01

ROOFTOP UNIT

COUNTER FLASHING*

INSULATION*

1/4ⴖ TYP (3) SIDES
*SEE NOTE

CANT STRIP*

ROOF FELT*

INSULATION*

ROOF DECK*

*BY CONTRACTOR

ROOF

STRUCTURAL

MEMBER*

ROOFCURB

DUCT*

NAILER STRIP

GASKET

HOLD
DOWN
BRACKET
TYP. (4) PLCS.

CABLE OR
CHAIN

NOTE: Remove shipping boards from unit before installing on the roofcurb.

8 IM 865

General Data

Nominal Sizes 6 Tons [21.1 kW] ASHRAE 90.1-2004 Compliant Models

[] Designates Metric Conversions

McQuay MPS Series 006AYCL 006AYCM 006AYDL 006AYDM
Cooling Performance

1

Gross Cooling Capacity Btu [kW] 75,000 [21.97] 75,000 [21.97] 75,000 [21.97] 75,000 [21.97]
EER/SEER

2

10.3/9.5 10.3/9.5 10.3/NA
Nominal CFM/ARI Rated CFM [L/s] 2000/2400 [944/1133] 2000/2400 [944/1133] 2000/2400 [944/1133] 2000/2400 [944/1133]
ARI Net Cooling Capacity Btu [kW] 72,000 [21.1] 72,000 [21.1] 72,000 [21.1] 72,000 [21.1]
Net Sensible Capacity Btu [kW] 53,000 [15.53] 53,000 [15.53] 53,000 [15.53] 53,000 [15.53]

Net System Power kW 6.99 6.99 6.99 6.99

Net Weight lbs. [kg] 619 [281] 619 [281] 619 [281] 619 [281]

Integrated Part Load Value

3

11.5 11.5 11.5 11.5

Compressor

No./Type 2/Scroll 2/Scroll 2/Scroll 2/Scroll

Outdoor Sound Rating (dB)

4

83 83 83 83

Outdoor Coil—Fin Type Louvered Louvered Louvered Louvered

Tube Type Rifled Rifled Rifled Rifled
Tube Size in. [mm] OD 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]
Face Area sq. ft. [sq. m] 16.56 [1.54] 16.56 [1.54] 16.56 [1.54] 16.56 [1.54]
Rows / FPI [FPcm] 2 / 22 [9] 2 / 22 [9] 2 / 22 [9] 2 / 22 [9]

Net Latent Capacity Btu [kW] 19,000 [5.57] 19,000 [5.57] 19,000 [5.57] 19,000 [5.57]

Indoor Coil—Fin Type Louvered Louvered Louvered Louvered

Tube Type Rifled Rifled Rifled Rifled
Tube Size in. [mm] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5] 0.375 [9.5]
Face Area sq. ft. [sq. m] 6.5 [0.6] 6.5 [0.6] 6.5 [0.6] 6.5 [0.6]
Rows / FPI [FPcm] 4 / 12 [5] 4 / 12 [5] 4 / 12 [5] 4 / 12 [5]
Refrigerant Control Capillary Tubes Capillary Tubes Capillary Tubes Capillary Tubes
Drain Connection No./Size in. [mm] 1/1 [25.4] 1/1 [25.4] 1/1 [25.4] 1/1 [25.4]

Outdoor Fan—Type Propeller Propeller Propeller Propeller

No. Used/Diameter in. [mm] 1/24 [609.6] 1/24 [609.6] 1/24 [609.6] 1/24 [609.6]
Drive Type/No. Speeds Direct/1 Direct/1 Direct/1 Direct/1
CFM [L/s] 4000 [1888] 4000 [1888] 4000 [1888] 4000 [1888]
No. Motors/HP 1 at 1/3 HP 1 at 1/3 HP 1 at 1/3 HP 1 at 1/3 HP
Motor RPM 1075 1075 1075 1075

Indoor Fan—Type FC Centrifugal FC Centrifugal FC Centrifugal FC Centrifugal

No. Used/Diameter in. [mm] 1/10x9 [254x229] 1/10x9 [254x229] 1/10x9 [254x229] 1/10x9 [254x229]
Drive Type/No. Speeds Belt/Variable Belt/Variable Belt/Variable Belt/Variable
No. Motors 1 1 1 1
Motor HP 1 1/2 1 1/2 1 1/2 1 1/2
Motor RPM 1725 1725 1725 1725
Motor Frame Size 0 0 0 0

Filter—Type Disposable Disposable Disposable Disposable

Furnished Yes Yes Yes Yes
(No.) Size Recommended in. [mm] (4)2x16x16 [51x406x406] (4)2x16x16 [51x406x406] (4)2x16x16 [51x406x406] (4)2x16x16 [51x406x406]

Refrigerant Charge Oz. (Sys. 1/Sys. 2) [g] 88/88 [2495/2495] 88/88 [2495/2495] 88/88 [2495/2495] 88/88 [2495/2495]
Weights

Ship Weight lbs. [kg] 628 [285] 628 [285] 628 [285] 628 [285]

10.3/NA

CONTINUED

NOTES:

1. Cooling Performance is rated at 95° F ambient, 80° F entering dry bulb, 67° F entering wet bulb. Gross capacity does
not include the effect of fan motor heat. ARI capacity is net and includes the effect of fan motor heat. Units are suitable
for operation to 20% of nominal cfm. Units are certified in accordance with the Unitary Air Conditioner Equipment
certification program, which is based on ARI Standard 210/240 or 360.

2. EER and/or S

EER are rated at ARI conditions and in accordance with DOE test procedures.

3. Integrated Part Load Value is rated in accordance with ARI Standard 210/240 or 360. Units are rated at 80° F ambient,
80° F entering dry bulb, and 67° F entering wet bulb at ARI rated cfm.

4. Outdoor Sound Rating shown is tested in accordance with ARI Sta

ndard 270.