Bard Q-TEC Q24A2, Q-TEC Q42A2, Q-TEC Q48A2, Q-TEC Q60A2, Q-TEC Q30A2 Installation Instructions Manual

Q-TEC SERIES

PACKAGED
INSTALLATION
INSTRUCTIONS

AIR CONDITIONER

Models:
Q24A2 Q30A2
Q36A2 Q42A2
Q48A2 Q60A2

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

Since 1914 . . . Moving ahead, just as planned.

Manual: 2100-600
Supersedes: NEW
File: Vol II Tab 14
Date: 08-21-13

Manual 2100-600
Page 1 of 38

CONTENTS

Getting Other Information and Publications

For more information, contact these publishers: ........... 3

Q-T

ec General Information

Q-Tec Model Nomenclature ..........................................4

Shipping Damage .........................................................8

Unit Removal From Skid ...............................................8

Handling Unit After Removal From Skid .......................9

General .........................................................................9

Minimum Installation Height ..........................................9

Duct Work ....................................................................11

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

Fresh Air Intake ...........................................................12

Service Light ...............................................................12

Condensate Drain .......................................................12

Optional Rear Drain Kit ...............................................12

Separate Evaporator Drain Connection ..................... 12

Installation Instructions

Mounting the Unit ........................................................19

Wiring — Main Power .................................................. 20

Wiring — Low Voltage Wiring ...................................... 20

Opt. Climate Controls Sequence of Op. .............20 & 21

Low Voltage Connections ...........................................21

General .......................................................................21

Start Up

R-410A Refrgerant..........................................................27

Topping Off System Charge

Safety Practices..............................................................27

Description of Standard Equipment
Optional CFM (Q36A2, Q42A2, Q48A2 & Q60A2 Only)
Important Installer Note
Phase Monitor
Three Phase Scroll Compressor Start Up

Information.........................................................28 & 29

Compressor Control Module...........................................29

Adjustments
Service Hints
Mist Eliminator Service
Vent Options

Sequence of Operation...................................................34

Pressure Service Ports

Troubleshooting

Troubleshooting GE ECM™ Blower Motors
Fan Blade Setting Dimensions
Refrigerant Charge
Pressure Chart

................................................................28

....................................................................29

..........................................................29 & 30

...........................................................30 & 31

.........................................................37

...............................................................38

...........................................27

................................28

28

..................................................28

...................................................30

...................................................34

..............35-36

.......................................37

Figures

Figure 1 Unit Dimensions ...........................................7

Figure 2 Air Seal Under Unit ......................................8

Figure 3 Removal of Unit From Skid .......................... 8

Figure 4 Unit on Appliance Cart for Moving................9

Figure 5 Installation With Free Blow Plenum ........... 10

Figure 6 Ducted Application ..................................... 10

Figure 7 Supply Duct Connections ............................11

Figure 8 Filter Location..............................................11

Figure 9 Optional Side Drain ....................................13

Figure 10 Standard Rear Drain ..................................13

Figure 11 Rear Drain (Top View) ................................ 13

Figure 12A
Figure 12B
Figure 12C
Figure 12D
Figure 13A

Figure 13B

Figure 14 Removing Locking Screws from Wheels.... 19

Figure 15 Component Location ..................................20

Figure 16 Thermostat Plug Terminals ........................ 22

Figure 17 Thermostat Wiring Diagram "X" Option ..... 23

Figure 18 Thermostat Wiring Diagram "A" Option ..... 24

Figure 19 Thermostat Wiring Diagram "D" Option .... 25

Figure 20 Thermostat Wiring Diagram "H" Option .... 26

Figure 21 Fresh Air Damper Removal ........................32

Figure 22 QERV Removal ..........................................33

Figure 23 CO2 Controller ............................................34

Figure 24 Control Disassembly ..................................36

Figure 25 Winding Test ...............................................36

Figure 26 Drip Loop....................................................36

Figure 27 Fan Blade Setting.......................................37

Manual 2100-600
Page 2 of 38

Optional Rear Drain Kit ..............................14

Optional Rear Drain Kit ..............................15

Optional Rear Drain Kit .............................. 16

Optional Rear Drain Kit .............................. 17

Unit Mounting .............................................18

Unit Mounting .............................................18

Tables

Table 1 Factory Built-In Electric Heat Table ............... 5

Table 2 Electrical Specications.................................6

Table 3 Operating Voltage Range ............................20

Table 4 Wall Thermostats .........................................22

Table 5 Fan Blade Dimensions ................................ 37

Table 6 Indoor Blower Performance.........................37

Table 7 Cooling Pressure .........................................38

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air

conditioner or heat pump. You can usually nd these

at your local library or purchase them directly from the
publisher. Be sure to consult current edition of each
standard.

National Electrical Code ......................ANSI/NFPA 70

Standard for the Installation ...............ANSI/NFPA 90A

of Air Conditioning and Ventilating Systems

Standard for W arm Air .......................ANSI/NFPA 90B

Heating and Air Conditioning Systems

Load Calculation for ..................... ACCA Manual J or

Winter and Summer Manual N
Air Conditioning

Low Pressure, Low Velocity .........ACCA Manual D or

Duct System Design Manual Q
Winter and Summer Air Conditioning

FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:

ACCA Air Conditioning Contractors of America
1712 New Hampshire Avenue
Washington, DC 20009
Telephone: [phone]
Fax: [phone]

ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone]
Fax: [phone]

ASHRAE American Society of Heating, Refrigeration,
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.

Atlanta, GA 30329-2305
Telephone: [phone]
Fax: [phone]

NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone]
Fax: [phone]

Manual 2100-600
Page 3 of 38

Q-Tec Series General Information

Q-Tec MODEL NOMENCLATURE

Q 42 A 2 A 10 X X V X X X

MODEL
NUMBER

Q-Tec™

CAPACITY

24 - 2 Ton
30 - 2½ Ton
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton

VENTILATION OPTIONS

X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate

E - Economizer(Notavailableondehumidicationversions)

P - Commercial Ventilator - Motorized w/Exhaust Power Return
V - Commercial Ventilator - Motorized w/Exhaust Spring Return
R - Energy Recovery Ventilator w/Independent Intake & Exhaust Control

jIf“X”controloptionisselected,thenthermostatandhumidistat,ifapplicable,orDDCcontrolsystemmustbeeldsupplied.

NOTE:

AIR

CONDITIONER

REVISION |

VOLTS & PHASE |

A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3

KW
0Z - 0KW
05 - 5KW
06 - 6KW
09 - 9KW
10 -10KW
12 -12KW
15 -15KW

FILTER OPTIONS

X - 1 inch Fiberglass
(Standard)
F - 2 inch Fiberglass
P - 2 inch Pleated

COLOR

V - Platinum w/Slate
Front (Vinyl)
X - Beige paint
4 - Gray paint

CLIMATE CONTROLj

STANDARD UNITS
X - None
D - Electronic/Prog
H - Electronic/Prog/CO
B - Electronic/Prog/Humidistat/BACNet
C - Electronic/Prog/Humidistat/BACNet/CO

2

COIL OPTIONS

X - Standard
1 - Phenolic coated

evaporator*
2 -

Phenolic coated

condenser
3 - Phenolic coated

evaporator and
condenser coil*

*and reheat if
applicable

2

INTERNAL
CONTROLS

X - Standard

• High Pressure Switch

• Low Pressure Switch

• Compressor Control
Module w/Time Delay
J - Alarm Relay +
LAC + Above

Manual 2100-600
Page 4 of 38

TABLE 1

FACTORY BUILT-IN ELECTRIC HEAT TABLE

Q60A2-A Q60A2-B Q60A2-C

Q36A2-C

Q42A2-C

Q48A2-C

Q36A2-B

Q42A2-B

Q48A2-B

Q36A2-A

Q42A2-A

Q48A2-A

Q24A2-B Q30A2-B Q24A2-C Q30A2-C

Q24A2-A

Q30A2-A

Models

240V-1 208V-1 240V-1 208V-1 240V-1 208V-1 480V-3 480V-3 240V-1 208V-1 240V-1 208V-1 480V-3 240V-1 208V-1 240V-1 208V-1 480V-3

KW BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH

5.0 16,380 12,290 16,380 12,290

6.0 20,500 15,360 20,500 15,360 20,500 20,500 20,500 15,360 20,500

9.0 30,700 23,000 30,700 23,000 30,700 30,700 30,700 23,000 30,700 30,700 23,000 30,700

10.0 32,670 24,570 32,670 24,570 32,670 24,570

12.0 41,000 30,700 41,000

15.0 49,150 36,860 49,150 36,860 49,150 49,150 36,860 49,150 36,860 49,150

Manual 2100-600
Page 5 of 38

TABLE 2

ELECTRICAL SPECIFICATIONS

No.

Field

Power

Circuits

1

1
1

1
1

1
1

1
1
1

1
1
1
1

1
1
1

1 or 2

1
1
1
1

1
1
1
1

1
1
1

1 or 2

1
1
1
1

1
1
1
1

1
1
1

1 or 2

1
1
1
1

1
1
1
1

1 or 2

1
1

1
1



Minimum

Circuit

Ampacity

22
30
55

17
25
33

10
12
17

25
32
57

18
25
34
43

11
14
18
23

29
34
58
84

21
26
35
53

12
14
18
27

35
35
58
83

26
26
35
53

13
14
18
27

37
37
58
83

28
28
35
53

14
14
18
27

45
59
84

31
36
55

16
19
28

MODEL

Q24A2-A0Z

Q24A2-B0Z

Q24A2-C0Z

Q30A2-A0Z

Q30A2-B0Z

Q30A2-C0Z

Q36A2-A0Z

Q36A2-B0Z

Q36A2-C0Z

Q42A2-A0Z

Q42A2-B0Z

Q42A2-C0Z

Q48A2-A0Z

Q48A2-B0Z

Q48A2-C0Z

Q60A2-A0Z

Q60A2-B0Z

Q60A2-C0Z

Rated

Volts &

Phase

A05

230/208-111

A10

B06

230/208-311

B09

C06

460-3

C09

A05

230/208-111

A10

B06

230/208-3

B09
B12

C06

460-3

C09
C12

A05

230/208-1

A10
A15

B06

230/208-3

B09
B15

C06

460-3

C09
C15

A05

230/208-1

A10
A15

B06

230/208-3

B09
B15

C06

460-3

C09
C15

A05

230/208-1

A10
A15

B06

230/208-3

B09
B15

C06

460-3

C09
C15

A10

230/208-111

A15

B09

230/208-311

B15

C09

460-3

C15

jMaximumsizeofthetimedelayfuseorHACRtypecircuitbreakerforprotectionofeldwiringconductors.
Basedon75°Ccopperwire.AllwiringmustconformtotheNationalElectricalCodeandalllocalcodes.
These“MinimumCircuitAmpacity”valuesaretobeusedforsizingtheeldpowerconductors.RefertotheNationalElectric 

 Code(latestrevision),article310forpowerconductorsizing.

CAUTION: Whenmorethanoneeldpowerconductorcircuitisrunthroughoneconduit,theconductorsmustbederated. 
Pay special attention to Note 8 of Table 310 regarding Ampacity Adjustment Factors when more than three

   conductorsareinaraceway.

Single Circuit Dual Circuit

j

Maximum

External

Fuse or

Ckt. Brkr.

30
30
60

20
25
35

15
15
20

35
35
60

25
25
35
45

15
15
20
25

45
45
60
90

30
30
35
60

15
15
20
30

50
50
60
90

35
35
35
60

15
15
20
30

50
50
60
90

40
40
40
60

20
20
20
30

60
60
90

45
45
60

20
20
30



Field

Power

Wire

Size

10
10

6

12
10

8

14
14
12

8
8
6

10
10

8
6

14
14
12
10

8
8
6
4

10
10

8
6

14
14
12
10

8
8
6
4

8
8
8
6

14
14
12
10

8
8
6
4

8
8
8
6

12
12
12
10

8
6
4

8
8
6

12
12
10

 Minimum



Ground

Wire

10
10
10

12
10
10

14
14
12

10
10
10

10
10
10
10

14
14
12
10

10
10

8
8 58 25 60 25 6 10 10 10

10
10
10
10

14
14
12
10

10
10

8
8 58 25 60 25 6 10 10 10

10
10
10
10

14
14
12
10

10
10
10

8 58 25 60 25 8 10 10 10

10
10
10
10

12
12
12
10

10
10

8 59 25 60 25 8 10 10 10

10
10
10

12
12
10

Circuit

Ampacity

Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B Ckt. A Ckt. B

j Maximum

External Fuse

or Ckt. Breaker



Field Power

Wire Size



Ground

Wire Size

Manual 2100-600
Page 6 of 38

FIGURE 1

UNIT DIMENSIONS

Manual 2100-600
Page 7 of 38

SHIPPING DAMAGE

Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. The
skid must remain attached to the unit until the unit is
ready for installation. If damage is found, the receiving
party must contact the last carrier immediately,
preferably in writing, requesting inspection by the
carrier’s agent.

UNIT REMOVAL FROM SKID

WARNING

This unit is heavy and requires more than one

persontohandleandremovefromtheskid.

Check unit wheels to ensure that wheels are

lockedbeforeremovingfromskid.Extreme

caution must be taken to prevent injury to

personnelanddamagetotheunit.

It is recommended that the unit not be removed from
the skid with a forklift since the air seal under the unit
could be damaged. See Figure 2.

The shipping brackets on each side of the unit must be
removed and discarded. See Figure 3-A. The return air
grille panel can be removed to provide a place to hold

FIGURE 2

AIR SEAL UNDER QTec UNIT

Air Seal

the unit. The unit can be slid forward on the skid until
the front wheels hang over the edge of the skid. See
Figure 3-B. The unit can be tipped forward and slid
down the edge of the skid until the front wheels touch
the ground. See Figure 3-C. The wheels will not roll.
They are shipped from the factory locked so they will
not roll. The back of the skid will have to be held down
to keep it from tipping up. The skid can be slid out
from under the unit. The unit can then be set upright.

FIGURE 3

REMOVAL OF UNIT FROM SKID

Hold Skid
Down

A Shipping Brackets B Front Wheels Over Edge

Manual 2100-600
Page 8 of 38

C Front Wheels On Floor

HANDLING UNIT AFTER REMOVAL
FROM SKID

WARNING

Exercise extreme caution when pushing the

unitontherollers.Handleandpushfromthe
lower1/3oftheunit.Insurethatdebrisisnot
ontheoorwheretheunitistobemovedon
therollers.Failuretodosocouldresultinthe

unit tipping over and causing bodily injury and/

ordamagetotheunit.

The unit will have to be turned sideways and removed

from the skid to t through a 36" doorway. If the door

height allows, the unit can be slid sideways through the
door.

If the unit can not be slid through the door, then the unit
will have to be put on a cart and tipped down to roll
through the door. It is recommended that an appliance
cart by used with a strap to hold the unit on the cart. The
wheels of the unit must be locked. If the wheels were
allowed to roll, the unit could roll off the cart. The unit
should always be carted from the left side. This is the
side where the compressor is located. See Figure 4.

The blade of the appliance cart should be slid under
the wheels of the unit. The strap of the appliance cart
should be placed around the unit and strapped tightly.
Help will be required to tip the unit back onto the cart.
The unit can be leaned far enough back to be rolled
through the door. Be careful when setting the unit back
up to keep from damaging the unit.

GENERAL

The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians. A QWS-Series wall sleeve supplied as a
separate accessory must be ordered and installed with
Q-Tec unit.

The unit is designed for use with or without duct work.
For use without duct work, Plenum Box QPB42 is
recommended.

These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.

These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly “Start
Procedure” and any tags and/or labels attached to the
equipment.

APPLIANCE
CART

COMPRESSOR

FIGURE 4

UNIT ON APPLIANCE CART

Q-Tec UNIT
(Right Side)

STRAP

While these instructions are intended as a general
recommended guide, they do not supersede any
national and/or local codes in any way. Authorities
having jurisdiction should be consulted before the
installation is made. See Page 3 for information on
codes and standards.

Size of unit for a proposed installation should be based
on heat loss calculation made according to methods
of Air Conditioning Contractors of America (ACCA).
The air duct should be installed in accordance
with the Standards of the National Fire Protection
Systems of Other Than Residence Type, NFPA No.
90A, and Residence Type Warm Air Heating and Air
Conditioning Systems, NFPA No. 90B. Where local
regulations are at a variance with instructions, installer
should adhere to local codes.

MINIMUM INSTALLATION HEIGHT

The minimum installation height of the unit with a
Free Blow Plenum is 8 ft. 6 in. This provides enough
clearance for the plenum to be removed. See Figure 5.

The minimum installation height for ducted
applications is 8 ft. 4½ in. This provides enough
clearance to install the duct work. See Figure 6.

Manual 2100-600
Page 9 of 38

FIGURE 5

INSTALLATION WITH FREE BLOW PLENUM

FIGURE 6

DUCTED APPLICA TION

Manual 2100-600
Page 10 of 38

DUCT WORK

All duct work must be properly sized for the design

airow requirement of the equipment. Air Conditioning

Contractors of America (ACCA) is an excellent guide
to proper sizing. All duct work or portions thereof not
in the conditioned space should be properly insulated in
order to both conserve energy and prevent condensation
or moisture damage. When duct runs through unheated
spaces, it should be insulated with a minimum of one
inch of insulation. Use insulation with a vapor barrier
on the outside of the insulation. Flexible joints should
be used to connect the duct work to the equipment in
order to keep the noise transmission to a minimum.

The Q-Tec series unit has provision to attach a supply
air duct to the top of the unit. Duct connection size is

12 inches x 20 inches. The duct work is eld supplied

and must be attached in a manner to allow for ease of
removal when it becomes necessary to slide the unit out
from the wall for service. See Figure 7 for suggested
attachment method.

The Q-Tec series units are designed for use with free
return (non-ducted) and either free blow with the use of
QPB Plenum Box or a duct supply air system.

The QPB and QPBHW Plenum Box mounts on top
of the unit and has both vertically and horizontally
adjustable louvers on the front discharge grille.

For hot water coil option a QPBHWxx-F for free blow

or QPBHWxx-D for ducted airow is used.

When used with a ducted supply, a QCX Cabinet
Extension can be used to conceal the duct work above

the unit to the ceiling. This extends 20" above the
unit for a total height above the oor of 10'-7/8". The

unit is equipped with a variable speed indoor blower
motor which increases in speed with an increase in duct
static pressure. The unit will therefore deliver proper

rated airow up to the maximum ESP shown in Table

7. However, for quiet operation of the air system, the
duct static should be kept as low as practical, within the
guidelines of good duct design.

FILTERS

Two 1-inch throw away lters [(1) 16x16 and (1)
16x20] are supplied with each unit. The lters slide
into lter brackets. Refer to Figure 8.

The lters are serviced from the inside of the building

by opening the hinged door. This door is attached by a
screw and one locking latch.

The internal lter brackets are adjustable to
accommodate 2-inch lters. The tabs for the 1-inch
lters must be bent down to allow the 2-inch lters to

slide in place.

FIGURE 7

SUPPLY DUCT CONNECTIONS

SUPPLY DUCT
TO BE FIELD
SUPPLIED

ATTACHMENT
SCREWS TO
BE FIELD
SUPPLIED

ROOM SIDE OF
Q-T

ec UNIT

DUCT FLANGE
PROVIDED WITH
UNIT

NOTE: Unit cabinet, supply air duct and free blow

plenum are approved for “0” clearance to
combustible material.

FIGURE 8

FILTER LOCATION

FILTERS

RETURN AIR
GRILLE

Manual 2100-600
Page 11 of 38

FRESH AIR INTAKE

This unit is equipped with a fresh air damper assembly.
The damper blade is locked in the closed position
when the unit is shipped from the factory. To allow
the damper to operate remove the two plastic locking
pins, one on each end of the blade. This will allow for

maximum fresh airow. The damper blade will now

open when the indoor blower is operating. If less than

maximum fresh airow is required, reinsert the plastic

pins to limit damper blade opening to desired level.
Two extra pins are provided (taped to the inside of the
assembly) which may be used to hold the blade in some
position other than minimum or maximum position.
This fresh air assembly is located in the rear of the unit
and to gain access to make these adjustments remove

the air lter service door.

All capacity, efciency and cost of operation

information as required for Department of Energy
“Energyguide” Fact Sheets are based upon the fresh
air blank-off plate in place and is recommended for

maximum energy efciency.

The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.

For details on energy recovery ventilation see separate
section.

SERVICE LIGHT

The unit is equipped with a service light, which signals
the user that service is required. The light is located
in the upper control panel and is visible only when the

hinged service/lter access door is open.

The Service Unit light indicates that the unit has
been shut off by a high or low pressure device. This
indicates that the unit needs to be serviced.

CONDENSATE DRAIN

There are two drain connections on the unit. The rear
drain is the primary drain, and is located on the right
lower rear panel of the unit. The optional side drain is
located on the bottom right side of the unit. The side
drain is shipped with a plug installed.

The side drain requires a water trap for proper
drainage. See Figure 9. The drain can be routed

through the oor or through the wall. If the drain is to
be routed through an unconditioned space, it must be
protected from freezing. The drain line must be able

to be removed from the unit if it is necessary to remove
the unit from the wall. When the side drain is used, the
plug must be removed and installed in the rear drain
outlet.

The rear drain can be used with wall thickness of up to
10 inches where a water trap can be installed between
the unit and the interior wall. See Figure 10. The trap
cannot extend beyond the edge of the unit or it will
interfere with the wall mounting bracket. The drain can

be routed through the oor or through the wall. If the

drain is routed through the wall, the drain line must be
positioned such that it will not interfere with the sleeve

ange or the grille. See Figure 11. If the drain is to
be routed through an unconditioned space, it must be
protected from freezing.

OPTIONAL REAR DRAIN KITS

Optional Rear Drain Kit, Bard Model QCDS48A,
is also available for these products. The optional

rear drain kit offers multiple benets that include the

following:

• Allows unit to be rolled away from the sleeve
without having to disconnect any hard plumbing
connections.

• Allows indoor coil condensate to be easily
connected to Rear Drain Box while bypassing the
outdoor coil drain pan. This aids in minimizing the
potential for biological growth to occur by
minimizing the standing water and exposing it to
warm temperatures.

See Figures 12A, 12B, 12C and 12D.

The drain box permanently mounts onto the wall sleeve
and is then either piped directly outdoors, or can be
piped vertically. The Q-Tec unit is then equipped with

ttings on the rear of the unit that slide into the drain

box as it is wheeled towards the wall sleeve.

NOTE: On models equipped with a refrigerant
subcooler in the lower drain pan may experience a

2-3% decrease in cooling performance and efciency

when the indoor condensate is routed around the
outdoor coil drain pan/subcooler assembly. Unit

rated performance and efciency are with the indoor

condensate routed to the outdoor coil pan.

There is also a heated version of the rear drain box
available (Model #QCDS48H) for installation in
northern climates where freezing may occur.

SEPARATE EVAPORATOR DRAIN
CONNECTION (OPTIONAL)

A knockout is provided in the back right corner of the
units for use when draining the evaporator drain pan
separately from the condenser. This knockout is 5
inches above the back condenser drain opening. To
utilize a separate evaporator drain connection remove the
knockout and route the existing evaporator drain hose
out this knockout and then to an appropriate drain line.

Manual 2100-600
Page 12 of 38

FIGURE 9

OPTIONAL SIDE DRAIN (SIDE VIEW) INSTALLATION

Q-Tec UNIT

FIGURE 10

STANDARD REAR DRAIN

SLEEVE

WATER
TRAP

FIGURE 11

REAR DRAIN (TOP VIEW)

DRAIN LINE

WALL (MAXIMUM
10" FOR REAR
DRAIN)

COUPLINGS NOT
SHOWN BUT
RECOMMENDED
FOR EASE OF
REMOVABILITY

FORSERVICE.

WALL
BRACKET

UNIT

Manual 2100-600
Page 13 of 38

MIS-2469

DRAIN BOX

WALL SLEEVE

OVERFLOW TUBE

CAULK AROUND TUBE

FIGURE 12A

Manual 2100-600
Page 14 of 38

SUPPLIED WITH DRAIN BOX KIT

3/4" PLASTIC PIPE NIPPLE

HORIZONTAL TO FLOOR)

(TIGHTEN THREADS SO TEE IS

THREADS)

(APPLY TEFLON TAPE TO

REAR DRAIN CONNECTION IN
Q/Tec PRODUCT

1/2" SLIP X 1/2" SLIP X 3/4" NPT
TEE SUPPLIED WITH DRAIN BOX KIT

PLUG INSTALLED IN
SIDE Q/Tec DRAIN

MIS-2470

FIGURE 12B

IMPORTANT !

Manual 2100-600
Page 15 of 38

REMOVE KNOCK-OUT FOR
INDOOR DRAIN HOSE CONNECTOR

MIS-2471

FIGURE 12C

(If Used)

Manual 2100-600
Page 16 of 38

MIS-2472

DRAIN HOSE FROM INDOOR
DRAIN PAN.

MOVE HOSE FROM ATTACHMENT IN
LOWER DRAIN PAN AND SLIDE ONTO
DRAIN BOX BARB FITTING, SECURING
WITH SUPPLIED CLAMP IF OUTDOOR
PAN IS BYPASSED. ( WILL REDUCE RISK
OF ALGAE GROWTH IN THE OUTDOOR
PAN BUT AT A SLIGHT COOLING
PERFORMANCE REDUCTION OF 2-3% )

FIGURE 12D

Manual 2100-600
Page 17 of 38

Washer

Sleeve

Stud

MIS-2689

Nut

Lower Control Panel

Condenser

Door (Removed)

Return Grille

BOTTOM

TRIM PIECE

BOTTOM TRIM
EXTENSION

FIGURE 13A

UNIT MOUNTING

SIDE TRIM

(2PCS.)

SIDE TRIM

(2PCS.)

MOUNTING
BRACKET

ENLARGED VIEW OF MOUNTING
BRACKET SHOWING SLEEVE TO

CABINET A TT ACHMENT

MOUNTING BRACKET

WALL
SLEEVE

#8 SCREW
PROVIDED

(LIGHT COLOR)

CABINET
SIDE PANEL

#10 HEX

HEAD SCREW

PROVIDED

FIGURE 13B

UNIT MOUNTING

Manual 2100-600
Page 18 of 38

INSTALLATION INSTRUCTIONS

MOUNTING THE UNIT

When installing a Q-Tec unit near an interior wall on
the left side, a minimum of 8 inches is required; 12
inches is preferred.

When installing a Q-Tec unit near an interior wall on
the right side, a minimum of 18 inches is required as
additional space is required to connect the side drain.
If the rear condensate drain kit QCDS48 is used the
minimum can be reduced to 8 inches.

This clearance is required to allow for the attachment of
the unit to the sleeve and side trim pieces to the wall.

This unit is to be secured to the wall sleeve with
mounting brackets provided. The unit itself, the supply
duct and the free blow plenum are suitable of “0”
clearance to combustible material.

Following are the steps for mounting the Q-Tec. For
reference see Figure 13A for external mounting bracket
or 13B for internal bolt secured bracket (recommended).

1. Attach mounting brackets to the wall sleeve with
screws provided. Either use external mounting
bracket (Fig. 13A) or internal bolt bracket (Fig. 13B).

2. Position the unit in front of the sleeve with the
condenser section toward the sleeve.

3. Remove the locking screws from the wheels.
Refer to Figure 14.

4. Roll the unit into the sleeve. Make sure to check
both sides of the unit as it is being rolled to
keep it centered in the sleeve. Also check the

alignment to the mounting brackets. This unit
must be level from side to side. If adjustments
are necessary, shim up under the rollers with
sheets of steel or any substance that is not
affected by moisture.

5. Make sure the gasket on the rear of the unit is
touching the sleeve across the top and down both
sides. This is a rain water seal.

6. Secure the mounting brackets to the unit with
screws provided, #10 hex head sheet metal
screws (Figure 13A) or use nut and washer to
secure sleeve (Figure 13B).

7. Bottom trim extensions are provided for use when
wall is less than 14 inches but greater than 10.5
inches. Secure to wall with screws (not provided).

8. Attach the bottom trim piece to the unit with the
screws provided (dark colored).

9. Position side trim pieces to wall and attach with

eld supplied screws. There are two long pieces

and two short pieces supplied. The long pieces
are to enclose the gap behind the unit. The

short pieces are to ll the gap behind the cabinet

extension or the free blow plenum box. They
may be cut to suit your ceiling height or overlap

the unit side trim. There is sufcient length to
trim up to a 10'2" ceiling.

NOTE: If the exterior wall thickness is between 5

inches to 10.5 inches, a side trim extension
piece kit, model QSTX42, is available.

REMOVING LOCKING SCREWS FROM WHEELS

REMOVE SCREWS FROM WHEELS
BEFORE ROLLING INTO PLACE

FIGURE 14

Manual 2100-600
Page 19 of 38

WIRING – MAIN POWER

Refer to the unit rating plate and/or Table 2 for wire
sizing information and maximum fuse or “HACR
Type” circuit breaker size. Each unit is marked with
a “Minimum Circuit Ampacity”. This means that the

eld wiring used must be sized to carry that amount

of current. Depending on the installed KW of electric

heat, there may be two eld power circuits required. If

this is the case, the unit serial plate will so indicate. All
models are suitable only for connection with copper
wire. Each unit and/or wiring diagram will be marked
“Use Copper Conductors Only”. These instructions
MUST BE adhered to. Refer to the National Electrical
Code (NEC) for complete current carrying capacity
data on the various insulation grades of wiring material.
All wiring must conform to NEC and all local codes.

The electrical data lists fuse and wire sizes (75°C
copper) for all models, including the most commonly

used heater sizes. Also shown are the number of eld

power circuits required for the various models with
heaters.

The unit rating plate lists a “Maximum Time Delay
Relay Fuse” or “HACR Type” circuit breaker that is to
be used with the equipment. The correct size must be
used for proper circuit protection, and also to assure that
there will be no nuisance tripping due to the momentary
high starting current of the compressor motor.

FIGURE 15

COMPONENT LOCATION

SIDE FIELD WIRE

ELECTRIC
HEATERS

UNIT
MOUNTED
THERMOSTAT
LOCATION

DEHUMIDIFICATION
CONTROL
(OPTIONAL)

Manual 2100-600
Page 20 of 38

ENTRANCE

REMOTE
THERMOSTAT
TERMINAL
BLOCK

CIRCUIT
BREAKER PANEL
& CONTROLS

LOWER
CONTROL
PANEL

I

NDOOR

BLOWER

The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect.

See “Start Up” section for information on three phase
scroll compressor start-ups.

The eld wiring connections are located behind the top and

hinged panel in the circuit breaker panel. See Figure 15.

WIRING – LOW VOLTAGE WIRING

230/208V, 1 PHASE AND 3 PHASE EQUIPMENT
DUAL PRIMARY VOLTAGE TRANSFORMERS.

All Equipment leaves the factory wired on 240V tap.
For 208V operation, reconnect from 240V to 208V tap.
The acceptable operating voltage range for the 240 and
208V taps are as noted in Table 3.

TABLE 3

OPERATING VOLTAGE RANGE

TAP RANGE

240V 253 – 216
208V 220 – 187

NOTE: The voltage should be measured at the eld

power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).

OPTIONAL CLIMATE CONTROLS
SEQUENCE OF OPERATION

The standard Climate Control Option X is a remote
thermostat connection terminal block. See Figure 17 for
wiring diagram. Compatible thermostats are listed in

Table 4.
The Climate Control Option D is an electronic,

programmable thermostat. The subbase of the thermostat
is factory wired to the front panel of the unit. See Figure
19 for wiring diagram. Compatible for use with Energy

Recovery Ventilator or Economizer. The thermostat can
be set in the heat, cool or automatic mode. When the
thermostat is sent in the heat mode, it can heat only to
maintain the temperature set on the thermostat. When
the thermostat is set in the cool mode, it can cool only
to maintain the temperature set on the thermostat.
When the thermostat is set in the automatic mode, the
thermostat can change automatically to the heat or cool
modes to maintain the temperature set on the thermostat.

The Climate Control Option H is an electronic,
programmable thermostat and a CO2 controller. The
subbase of the thermostat and CO2 controller are factory
wired to the front panel of the unit. See Figure 20

for wiring diagram. The thermostat can be set in the
heat, cool or automatic mode. When the thermostat is
set in the heat mode, it can heat only to maintain the
temperature set on the thermostat. When the thermostat
is set in the cool mode, it can cool only to maintain the
temperature set on the thermostat. When the thermostat
is set in the automatic mode, the thermostat can change
automatically to the heat or cool modes to maintain the
temperature set on the thermostat.

The Climate Control Option B is an electronic,
programmable thermostat and is BACnet compatible.
The thermostat can be set in the heat, cool or automatic
mode. When the thermostat is set in the heat mode, it
can heat only to maintain the temperature set on the
thermostat. When the thermostat is set in the cool
mode, it can cool only to maintain the temperature set
on the thermostat. When the thermostat is set in the
automatic mode, the thermostat can change
automatically to the heat or cool modes to maintain the
temperature set on the thermostat. This thermostat
supports BACnet IP, MS/TP and Ethernet protocols.

The Climate Control Option C is an electronic,
programmable thermostat with CO
BACnet compatible. The thermostat can be set in the
heat, cool or automatic mode. When the thermostat is
set in the heat mode, it can heat only to maintain the
temperature set on the thermostat. When the thermostat
is set in the cool mode, it can cool only to maintain the
temperature set on the thermostat. When the thermostat
is set in the automatic mode, the thermostat can change
automatically to the heat or cool modes to maintain the
temperature set on the thermostat. The CO2 control
will energize the vent option and the ID blower when
the room CO2 levels rise over set level. Default CO2 set
point is 1000 ppm. See Figure 23.

The CO2 controller will energize the vent option and the
ID blower when the room CO2 levels rise over set level.
Default CO2 set point is 1000 ppm. See Figure 23.

NOTE: On option X, eld provided means to control

ventilation must be used if any of the motorized
ventilation options are installed.

NOTE: Thermostats are shipped in the bottom of

the unit and must be mounted to the factory
mounted subbase at time of installation.

control and is

2

LOW VOLTAGE CONNECTIONS

FOR DDC CONTROL

Fan Only Energize G
Cooling Mode Energize Y1, G
1st Stage Heating Energize G, W1
2nd State Heating Energize G, W2

(if employed)
Ventilation Energize G, F

LOW VOLTAGE CONNECTIONS

These units use a grounded 24 volt AC low voltage
circuit.

The “R” terminal is the hot terminal and the “C”
terminal is grounded.

“G” terminal or pin 6 of P2 is the fan input. If the
climate control option is abandoned and connections
are made directly to P2 pin 6 of P2 must be energized
for proper operation.

“Y1” terminal or pin 7 of P2 is the compressor input.
“W1” terminal or pin 8 of P2 is the st stage heat.
“R” terminal or pin 10 of P2 is 24 VAC hot.
“C” terminal or pin 11 of P2 is 24 VAC grounded.
“L” terminal or pin 12 of P2 is compressor lockout

output. This terminal is activated on a high or low
pressure trip by the electronic heat pump control. This
is a 24 VAC output.

GENERAL

This unit is equipped with a variable speed ECM

motor. The motor is designed to maintain rated airow

up to the maximum static allowed. It is important
that the blower motor plugs are not plugged in or
unplugged while the power is on. Failure to remove
power prior to unplugging or plugging in the motor
could result in motor failure.

CAUTION

“W2” terminal or pin 9 of P2 is second stage heat (if
equipped). If the unit is equipped with an optional hot
water coil plenum box or electric heat these will be
energized by this terminal.

“F” terminal of pin 5 of P2 is the ventilation input.
This terminal energizes any factory installed ventilation
option.

NOTE: For total and proper control using DDC, a total

of 5 controlled outputs are required (4 if no
ventilation system is installed).

Do not plug in or unplug blower motor

connectorswhilethepowerison.

Failuretodosomayresultinmotorfailure.

Manual 2100-600
Page 21 of 38

TABLE 4

WALL THERMOSTATS

Thermostat Predominant Features

3 stage Cool; 3 stage Heat
8403-060
(1120-445)

8403-058
(TH5220D1151)

8403-056
(C7232A1008)

Programmable/Non-Programmable Electronic

HP or Conventional

Auto or Manual changeover

2 stage Cool; 2 stage Heat

Electronic Non-Programmable

HP or Conventional

Auto or Manual changeover

Carbon Dioxide Sensor with LCD for

Sensor Readings

FIGURE 16

Manual 2100-600
Page 22 of 38

MIS-1285

FIGURE 17

1

Y2

W1

R
C

W2

Y1

E

1
2

G

Y2

A

Y1

W2

C

R

W1/E

1

G

Y2

Y

W2

C

R

W

2
3
4
5
6
7
8
9

11
12

10

F

Rc

G

2

3

BROWN

PURPLE

RED/WHITE

BLUE

YELLOW

TERMINAL BLOCK8403-060

1

8403-058

BLACK/WHITE

BROWN/WHITE

MIS-2693

ON 15KW MODELS

REMOVE JUMPER FOR 2 STAGE ELECTRIC HEAT OPERATION

FACTORY INSTALLED JUMPER

TH5220D1151 PLUG 2

LOW VOLTAGE

(FIELD WIRED)

ORANGE

2

"X" THERMOSTAT OPTIONS

RED

BLUE

REMOTE THERMOSTAT WIRING DIAGRAM

“X” THERMOSTAT OPTION

NOTE: On option X or A the CS2000A* (or other

eld provided means to control ventilation)

must be used if any of the motorized
ventilation options are installed.

Manual 2100-600
Page 23 of 38

W1/E

Orange

2

Yellow

Brown

7

G

12

W2

Red/White

Blue

9

10

1

6

5

Black/White

A

3

11

8

4

R

Purple

Plug #2

C

Y1

Brown/White

SC

SC

SC

4102-076

YO

"B" OR "C" THERMOSTAT OPTION

"B" CSB9E-THO

"C" CSB9E-THOC

FIGURE 18

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“B” OR “C” THERMOSTAT OPTION

NOTE: On option X or A the CS2000A* (or other eld

Manual 2100-600
Page 24 of 38

provided means to control ventilation) must be
used if any of the motorized ventilation options are
installed.

W1/E

8403-060

"D" THERMOSTAT OPTION

Y2

12

Plug #2

Brown

G

Purple

Orange

C

Blue

9

10

6

5

Black/White

A

3

11

8

4102-070

4

R

Y1

7

Red/White

W2

1

Yellow

2

Brown/White

FIGURE 19

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“D” THERMOSTAT OPTION

Manual 2100-600
Page 25 of 38

FIGURE 20

3

2
4

51

2

Orange

24 VAC

5

6

HOT

1

Orange

2

Red/White

Blue

9

10

6

Part #8403-060

5

Black/White

G

3

11

8

R

Y1

Plug #2

C

W2

1

Yellow

12

Purple

Brown

7

A Brown/White

2

Y2

Black/White

Red/White

Brown/White

Out

Controller

Red/White

W1/E

4

3

4

Analog

Bard Part #8403-067

Temp. andHumidity

CO Controller

COM

3

1

"H" THERMOSTAT OPTION

Relay

Part #8201-062

4

5

2

Black/White

4102-071 A

Red/White

UNIT MOUNTED THERMOSTAT WIRING DIAGRAM

“H” THERMOSTAT OPTION WITH CO

2

Manual 2100-600
Page 26 of 38

START UP

THESE UNITS REQUIRE R-410A
REFRIGERANT AND POL YOL
ESTER OIL.

GENERAL:

1. Use separate service equipment to avoid cross
contamination of oil and refrigerants.

2. Use recovery equipment rated for R-410A
refrigerant.

3. Use manifold gauges rated for R-410A (800 psi/250
psi low).

4. R-410A is a binary blend of HFC-32 and HFC-125.

5. R-410A is nearly azeotropic - similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.

6. R-410A operates at 40-70% higher pressure than
R-22, and systems designed for R-22 cannot
withstand this higher pressure.

7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.

8. R-410A compressors use Polyol Ester oil.

9. Polyol Ester oil is hygroscopic; it will rapidly
absorb moisture and strongly hold this moisture in
the oil.

10. A liquid line dryer must be used - even a deep
vacuum will not separate moisture from the oil.

11. Limit atmospheric exposure to 15 minutes.

12. If compressor removal is necessary, always plug
compressor immediately after removal. Purge with
small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE

If a leak has occurred in the system, Bard
Manufacturing recommends reclaiming, evacuating
(see criteria above), and charging to the nameplate
charge. If done correctly, topping off the system charge
can be done without problems.

With R-410A, there are no signicant changes in the

refrigerant composition during multiple leaks and
recharges. R-410A refrigerant is close to being an
azeotropic blend (it behaves like a pure compound
or single component refrigerant). The remaining
refrigerant charge, in the system, may be used after
leaks have occurred and then “top-off” the charge by
utilizing the pressure charts on the inner control panel
cover as a guideline.

REMEMBER: When adding R-410A refrigerant,
it must come out of the charging cylinder/tank as a
liquid to avoid any fractionation, and to insure optimal
system performance. Refer to instructions for the
cylinder that is being utilized for proper method of
liquid extraction.

WARNING

Failure to conform to these practices
could lead to damage, injury or death.

SAFETY PRACTICES:

1. Never mix R-410A with other refrigerants.

2. Use gloves and safety glasses. Polyol Ester oils
can be irritating to the skin, and liquid refrigerant
will freeze the skin.

3. Never use air and R-410A to leak check; the

mixture may become ammable.

4. Do not inhale R-410A – the vapor attacks the
nervous system, creating dizziness, loss of
coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimate death
can result from breathing this concentration.

5. Do not burn R-410A. This decomposition
produces hazardous vapors. Evacuate the area if
exposed.

6. Use only cylinders rated DOT4BA/4BW 400.

7. Never ll cylinders over 80% of total capacity.

8. Store cylinders in a cool area, out of direct
sunlight.

9. Never heat cylinders above 125°F.

10. Never trap liquid R-410A in manifold sets, gauge

lines or cylinders. R-410A expands signicantly

at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.

Manual 2100-600
Page 27 of 38

START UP

DESCRIPTION OF STANDARD
EQUIPMENT

High Pressure Switch

Provides refrigerant circuit high pressure protection.
Includes lockout circuit that is resettable from room
thermostat.

Compressor Control Module

Provides short cycle protection for the compressor
which extends compressor life, as well as high and low
pressure switch monitoring and alarm functions.

Service Lights

One service light indicates when service is required.

• Check System – detects high or low pressure
switch operation for compressor protection.

OPTIONAL CFM (Q36A2, Q42A2, Q48A2
AND Q60A2 ONLY)

These units are shipped from the factory set to operate
at the optional CFM level shown in Table 7. This
provides lower operating sound levels for non-ducted,
free discharge applications. This CFM level will reduce
the system capacity performance by approximately 2%

at the same energy efciency.

Rated CFM is required for ducted applications for
maximum performance rating. To obtain full CFM on
these models, connect jumper wire as follows:

1. Disconnect all power to the unit. Failure to do so
may result in damage to the motor.

2. Open return air service panel

3. Open inner control panel cover

4. Locate low voltage terminal strip. There is a
pink jumper wire with both ends attached to
terminal marked “G2”. Move one end of this
jumper to terminal “Y”.

5. Reverse steps to reassemble.

IMPORTANT INSTALLER NOTE

For improved start-up performance, wash the indoor
coil with a dishwasher detergent.

CAUTION

Do not plug in or unplug blower motor

connectorswhilethepowerison.

Failuretodosomayresultinmotorfailure.

PHASE MONITOR

All units with three phase scroll compressors are
equipped with a 3 phase line monitor to prevent
compressor damage due to phase reversal.

The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct the green LED will light and the
compressor contactor is allowed to energize.

If phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.

If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit factory
wires as damage may occur.

THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION

Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.

However, three phase compressors will rotate in either
direction depending upon phasing of the power. Since
there is a 50-50 chance of connecting power in such
a way as to cause rotation in the reverse direction,

verication of proper rotation must be made.

Verication of proper rotation direction is made by

observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as, substantially
reduced current draw compared to tabulated values.

Verication of proper rotation must be made at the time

the equipment is put into service. If improper rotation
is corrected at this time there will be no negative impact
on the durability of the compressor. However, reverse
operation for even one hour may have a negative
impact on the bearing due to oil pump out.

Manual 2100-600
Page 28 of 38

All three phase scroll compressors used in the Q-Tec
series are wired identically internally. As a result, once

the correct phasing is determined for a specic system

or installation, connecting properly phased power
leads to the same Fusite terminal should maintain
proper rotation direction. The direction of rotation of
the motor may be changed by reversing any two line
connections to the unit.

COMPRESSOR CONTROL MODULE

The compressor control module is standard on all
models covered by this manual. The compressor
control is an anti-short cycle/lockout timer with high
and low pressure switch monitoring and alarm relay
output.

Adjustable Delay On Make And Break Timer

On initial power up or any time power is interrupted to
the unit, the delay on make period begins, which will
be 2 minutes plus 10% of the delay on break setting.
When the delay on make is complete and the high
pressure switch (and low pressure switch if employed)
is closed, the compressor contactor is energized.

Upon shutdown the delay or break timer starts and
prevents restart until the delay on break and delay on
make periods have expired.

During routine operation of the unit with no power
interruptions the compressor will operate on demand
with no delay.

High Pressure Switch and Lockout Sequence

If the high pressure switch opens, the compressor
contactor will de-energize immediately. The lockout
timer will go into a soft lockout and stay in soft lockout
until the high pressure switch closes and the delay on
break time has expired. If the high pressure switch
opens again in this same operating cycle the unit will
go into manual lockout condition and the alarm relay
circuit will energize. Recycling the wall thermostat
resets the manual lockout.

Low Pressure Switch, Bypass, and Lockout
Sequence

If the low pressure switch opens for more than 120
seconds, the compressor contactor will de-energize
and go into a soft lockout. Regardless the state of
the low pressure switch, the contactor will reenergize
after the delay on make time delay has expired. If the
low pressure switch remains open, or opens again for
longer than 120 seconds the unit will go into manual
lockout condition and the alarm relay circuit will
energize. Recycling the wall thermostat resets the
manual lockout.

Alarm Relay Output

Alarm terminal is output connection for applications
where alarm relay is employed. This terminal is
powered whenever compressor is locked out due to
HPC or LPC sequences as described.

NOTE: Both high and low pressure switch controls

are inherently automatic reset devices. The
high pressure switch and low pressure switch

cut out and cut in settings are xed by specic

air conditioner or heat pump unit model. The
lockout features, both soft and manual, are a
function of the Compressor Control Module.

ADJUSTMENTS

Adjustable Delay on Make and Delay on Break
Timer

The potentiometer is used to select Delay on Break time
from 30 seconds to 5 minutes. Delay on Make (DOM)
timing on power-up and after power interruptions is
equal to 2 minutes plus 10% of Delay on Break (DOB)
setting:

0.5 minute (30 seconds) DOB = 123 second DOM

1.0 minute (60 seconds) DOB = 126 second DOM

2.0 minute (120 seconds) DOB = 132 second DOM

3.0 minute (180 seconds) DOB = 138 second DOM

4.0 minute (240 seconds) DOB = 144 second DOM

5.0 minute (300 seconds) DOB = 150 second DOM
During routine operation of the unit with no power

interruptions the compressor will operate on demand
with no delay.

Typical Settings for Dual Unit Installation:

Unit 1: DOB set at 2 minutes, and DOM is 132
seconds

Unit 2: DOB set at 4 minutes, and DOM is 144
seconds

SERVICE HINTS

1. Caution user to maintain clean air lters at all

times. Also, not to needlessly close off supply

air registers. This may reduce airow through

the system, which shortens equipment service
life as well as increasing operating costs and
noise levels.

2. Check all power fuses or circuit breakers to be
sure they are the correct rating.

3. Periodic cleaning of the outdoor coil to permit

full and unrestricted airow circulation is

essential.

Manual 2100-600
Page 29 of 38

6. Some service requires the need to remove the
unit from the wall including replacement of
the indoor coil and/or the outdoor coil. Also
servicing the outdoor fan motor or fan blade
will require removing the unit from the wall if
the unit is installed at a height that is not easily
accessible from the outside of the building.

In order to remove the unit from the wall the

following procedure must be used:

a. Turn off power to the unit at the remote

location. Some units may have more than one
power supply.

b. Disconnect eld wiring at unit terminal block

and remove from unit.

c. Disconnect condensate drain.
d. Remove the lower skirting around the unit.
e. Remove wall mounting brackets from wall on

each side of the unit.

f. If unit is attached to duct work, remove upper

cabinet extension by removing the top center
screw only from the cabinet side panel.

g. Remove screws that attach the duct work to

the unit anges.

This unit is equipped with four rollers mounted
to the base. For ease of pulling unit out from
the wall, you may want to remove the bottom
service door which requires removal of the
return air panel, and grip the front ange of the
base pan then pull straight out.

7. Annual maintenance is required to make sure
that all of the systems are functioning properly.

a. Check to make sure that the drains are not

obstructed in any way.

b. Remove any debris in the condenser section

of the unit.

c. Inspect and clean mist eliminator as described

below.

d. Inspect and wash outdoor coil as necessary.

The mist eliminator can be serviced from the outside
by using a vacuum cleaner. The outdoor grille must be
removed. Use the vacuum to remove dirt and debris
from the surface of the mist eliminator. If additional
cleaning is required, the mist eliminator will have to be
removed from the sleeve.

The ventilation package will have to be removed to
gain access tot he mist eliminator. If the blank off plate
option is used, it is not necessary to service the mist
eliminator. The steps necessary to remove each of the
vent options are listed on the following pages.

The mist eliminator can be cleaned by washing with
soap and water. The excess water should be shaken off
the mist eliminator before it is reinstalled.

VENT OPTIONS

BAROMETRIC FRESH AIR DAMPER
(Standard)

Before starting, make sure the power has been turned
off. The return air grille panel must be removed. The
fresh air damper assembly can be seen on the back of
the unit. See Figure 21.

1. The fresh air damper is attached to the back of
the unit with one screw on either side of the
assembly. Both of the screws must be removed.

2. Once the mounting screws are removed, tilt the
assembly down and lift it out.

The mist eliminator can be seen through the opening.
The mist eliminator must be raised up and the bottom
can be pulled toward the front of the unit.

ECONOMIZER OR COMMERCIAL ROOM
VENTILATOR (Option)

Before starting, make sure the power has been turned
off. The return air grille panel must be removed. The
economizer (EIFM) or commercial room ventilator
(CRV) can be seen after the panel has been removed.
The CRV or EIFM must be removed to gain access to
the mist eliminator.

MIST ELIMINATOR SERVICE

A mist eliminator is supplied with the wall sleeve. The
mist eliminator is constructed of an aluminum frame
and mesh. The mist eliminator is located in the top
section of the wall sleeve and can be removed from the
inside of the building without removing the unit from
the wall. This requires that the ventilation package
must be removed.

It is recommended that the mist eliminator be inspected
annually and serviced as required. The mist eliminator
can be inspected from the outside of the building by
looking through the outdoor grille.

Manual 2100-600
Page 30 of 38

1. The two mounting screws in the front of the
EIFM or CRV must be removed.

2. The power connectors for the CRV (located on
the right side of the unit) must be disconnected.
Squeeze the tabs on the sides of the connector
and pull straight out. Unplug both of the
connectors.

3. Slide the EIFM or CRV straight out of the
unit. The mist eliminator can be seen through
the opening in the back of the unit. The mist
eliminator must be raised up and the bottom
can be pulled toward the front of the unit and
removed.

ec ENERGY RECOVERY VENTILATOR

Q-T
(Option)

Before starting, make sure that the power has been
turned off. The return air grille panel must be removed.
The energy recovery ventilator (QERV) can be seen
after the panel has been removed. To gain access to
the mist eliminator, the QERV must be removed. See
Figure 22.

1. The front ll plate of the QERV must be removed.

There is one screw on either side of the plate.
Remove these screws and remove the plate.

2. On either side of the QERV there are mounting
screws that hold the QERV in place. Remove both
of these screws.

3. Underneath the heat recovery cassette there is a
power connector for the lower blower assembly. To
disconnect this plug, the tabs on both sides of the
plug must be squeezed to release the plug. While
squeezing the tabs, pull the plug out of the socket.

4.

The QERV is plugged into the unit in the right side
of the unit. Both of these plugs must be disconnected
to remove the QERV.

Squeeze the tabs on the sides

of the connector and pull straight out.

5. Slide the QERV assembly straight out of the unit,
being careful not to let the cassette slide out of the
QERV.

The mist eliminator can be seen through the opening in
the back of the unit. The mist eliminator must be raised
up and the bottom can be pulled toward the front of the
unit and removed.

Manual 2100-600
Page 31 of 38

FIGURE 21

FRESH AIR DAMPER REMOVAL

MOUNTING SCREW

Manual 2100-600
Page 32 of 38

FIGURE 22

QERV REMOVAL

MOUNTING SCREWS

POWER

CONNECTORS

LOWER BLOWER

ASSEMBLY POWER

CONNECTOR

FRONT FILL

Manual 2100-600
Page 33 of 38

SEQUENCE OF OPERATION

PRESS UP AND DOWN
ARROWS TO ENTER
CONFIGURATION MODE
USE ARROWS TO SELECT
SETTING. PUSH MIDDLE
BUTTON TO CHANGE.
CONTROLLER WILL
SHOW SET.

NOTE: MENU
JUMPER MUST
BE SET TO "ON"
TO CHANGE ANY
SETTINGS WITH
THE FRONT BUTTONS.
TO LOCK THE CO2
CONTROLLER MOVE
JUMPER TO "OFF" AFTER
IT HAS BEEN CONFIGURED

Settings Recommended Default

RON 1000 1000
ROF 950 950

DSP C CT

UNI US US

COL Not Used

COH Not Used

TOL Not Used

TOH Not Used

BAR

See Instrution with Controller
For High Altitude Installations

CAL Used for Field Calibration

MIS-3326

PRESSURE SERVICE PORTS

Cooling – Circuit R-Y makes the thermostat pull in
the compressor contactor starting the compressor
and outdoor motor. The G (indoor motor) circuit
is automatically completed on any call for cooling
operation, or can be energized by manual fan switch on
subbase for constant air circulation.

Heating – Circuit is completed for R-W1 on each
heating “on” cycle, energizing the electric heat contactor.
R-G also makes starting indoor blower motor.

Second stage heat – Energized circuit R-W2 and the
electric heat contactor for the second bank of heaters (if
equipped) is energized.

High / Low Pressure control provides protection for
the compressor. In the event system pressures go
above 600 PSI or below 15 PSI in cooling mode the
compressor will be stopped. This will activate the
red light located in the control panel. The lockout
circuit will hold compressor off line. When the system
problem is corrected, the unit operation can be restored
by turning of the main power supply off and then back
on, or reset the room thermostat. The low pressure
control has a bypass to eliminate nuisance lockout on
cold start up. Factory set to 2 minutes.

High and low pressure service ports are installed on
all units so that the system operating pressures can be
observed. Pressure curves can be found later in the
manual covering all models on both cooling and heating
cycles. It is imperative to match the correct pressure
curve to the unit by model number. Upper and lower
service doors must be attached to obtain proper reading.

Manual 2100-600
Page 34 of 38

FIGURE 23

CONTROLLER – FACTORY SET TO 1000 PPM

CO

2

TROUBLESHOOTING GE ECM

™

MOTORS

CAUTION:

Disconnect power from unit before removing or replacing
connectors, or servicing motor. To avoid electric shock from
the motor’s capacitors, disconnect power and wait at least 5
minutes before opening motor.

Symptom Cause/Procedure

Motor rocks slightly • This is normal start-up for ECM
when starting

Motor won’t start • Check blower turns by hand

• No movement

• Check low voltage (24 Vac R to C) at motor

• Check low voltage connections
(G, Y, W, R, C) at motor

• Check for unseated pins in connectors on
motor harness

• Test with a temporary jumper between R - G

• Check motor for tight shaft

• Perform motor/control replacement check

• Perform Moisture Check

• Motor rocks, • Check for loose or compliant motor mount
but won’t start

• Perform motor/control replacement check

Motor oscillates up • It is normal for motor to oscillate with no load
& down while being on shaft
tested off of blower

Motor starts, but
runs erratically

• Varies up and down • Check line voltage for variation or “sag”

or intermittent • Check low voltage connections
(G, Y, W, R, C) at motor, unseated pins in
motor harness connectors

• Check “Bk” for erratic CFM command (in

variable-speed applications)

• Check out system controls, Thermostat

• Perform Moisture Check

• “Hunts” or “puffs” at • Does removing panel or lter reduce

high CFM (speed) “pufng”?

- Reduce restriction

- Reduce max airow

• Stays at low CFM • Check low voltage (Thermostat) wires and

despite system call connections
for cool or heat CFM • Verify fan is not in delay mode; wait until
delay complete

• “R” missing/not connected at motor

• Perform motor/control replacement check

• Stays at high CFM • “R” missing/not connected at motor

• Is fan in delay mode? - wait until delay time

complete

• Perform motor/control replacement check

• Blower won’t shut off •

Check for Triac switched thermostat or solid­ state relay

• Check power at motor

• Make sure blower wheel is tight on shaft

Current leakage from controls into G, Y or W?

Symptom Cause/Procedure

• Noisy blower or cabinet • Check for loose blower housing, panels, etc.

• High static creating high blower speed?

- Check for air whistling through seams in
ducts, cabinets or panels

- Check for cabinet/duct deformation

• “Hunts” or “puffs” at • Does removing panel or lter reduce
high CFM (speed)

- Reduce restriction

- Reduce max. airow

Evidence of Moisture

• Motor failure or • Replace motor and
malfunction has occurred
and moisture is present

• Evidence of moisture

present inside air mover

“pufng”?

• Perform Moisture Check

Perform Moisture Check

Do Don’t

• Check out motor, controls, • Automatically assume the motor is bad.

wiring and connections
thoroughly before replacing
motor

• Orient connectors down so • Locate connectors above 7 and 4 o’clock

water can’t get in positions

- Install “drip loops”

• Use authorized motor and • Replace one motor or control model # with

model #’s for replacement another (unless an authorized replacement)

• Keep static pressure to a • Use high pressure drop lters some have

minimum: H20 drop!

- Recommend high • Use restricted returns

efciency, low static lters

- Recommend keeping lters

clean.

- Design ductwork for min.

static, max. comfort

- Look for and recommend

ductwork improvement,
where necessary

• Size the equipment wisely • Oversize system, then compensate with low

airow

• Check orientation before • Plug in power connector backwards

inserting motor connectors • Force plugs

½"

Moisture Check

• Connectors are oriented “down” (or as recommended by equipment

manufacturer)

• Arrange harness with “drip loop” under motor

• Is condensate drain plugged?

• Check for low airow (too much latent capacity)

• Check for undercharged condition

• Check and plug leaks in return ducts, cabinet

Comfort Check

• Check proper airow settings

• Low static pressure for lowest noise

• Set low continuous-fan CFM

• Use humidistat and 2-speed cooling units

• Use zoning controls designed for ECM that regulate CFM

• Thermostat in bad location?

Excessive noise • Determine if it’s air noise, cabinet, duct or
motor noise; interview customer, if necessary

• Air noise • High static creating high blower speed?

- Is airow set properly?

- Does removing lter cause blower to slow
down? Check lter

- Use low-pressure drop lter

- Check/correct duct restrictions

Manual 2100-600
Page 35 of 38

™

MOTORS CONT’D.

8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3
CONTROL, the plastic tab and shorter through-bolts are not needed. The
control can be oriented in two positions 180° apart. MAKE SURE THE
ORIENTATION YOU SELECT FOR REPLACING THE
CONTROL ASSURES THE CONTROL'S CABLE CONNECTORS
WILL BE LOCATED DOWNWARD IN THE APPLICATION SO
THAT WATER CANNOT RUN DOWN THE CABLES AND INTO
THE CONTROL. Simply orient the new control to the motor's endshield,

insert bolts, and tighten. DO NOT OVERTIGHTEN THE BOLTS.

8c. IF REPLACING AN ECM 2.0 CONTROL WITH AN ECM 2.0

CONTROL (It is recommended that ECM 2.3 controls be used for all
replacements), the new control must be attached to the motor using

through bolts identical to those removed with the original control. DO
NOT OVERTIGHTEN THE BOLTS.

9. Reinstall the blower/motor assembly into the HVAC equipment.

Follow the manufacturer's suggested procedures.

10. Plug the 16-pin control plug into the motor. The plug is keyed.

Make sure the connector is properly seated and latched.

11. Plug the 5-pin power connector into the motor. Even though the
plug is keyed, OBSERVE THE PROPER ORIENTATION. DO NOT
FORCE THE CONNECTOR. It plugs in very easily when properly
oriented. REVERSING THIS PLUG WILL CAUSE IMMEDIATE

FAILURE OF THE CONTROL MODULE.

12.

Final installation check. Make sure the motor is installed as follows:
a. Unit is as far INTO the blower housing as possible.
b.Belly bands are not on the control module or covering vent holes.
c. Motor connectors should be oriented between the 4 o’clock and 8

o’clock positions when the blower is positioned in its final
location and orientation.

d.Add a drip loop to the cables so that water cannot enter the motor

by draining down the cables. Refer to Figure 26.

The installation is now complete. Reapply the AC power to the HVAC
equipment and verify that the new motor control module is working
properly. Follow the manufacturer's procedures for disposition of the old
control module.

TROUBLESHOOTING GE ECM

™

MOTORS CONT’D.

Replacing ECM Control Module

To replace the control module for the GE variable-speed indoor blower
motor you need to take the following steps:

1. You MUST have the correct replacement module. The controls are

factory programmed for specic operating modes. Even though they look

alike, different modules may have completely different functionality.

USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT
WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS.

2. Begin by removing AC power from the furnace or air handler being
serviced. DO NOT WORK ON THE MOTOR WITH AC POWER
APPLIED. To avoid electric shock from the motor’s capacitors, disconnect

power and wait at least 5 minutes before opening motor.

3. It is usually not necessary to remove the motor from the blower
assembly. However, it is recommended that the whole blower assembly,
with the motor, be removed from the furnace/air handler. (Follow the
manufacturer’s procedures). Unplug the two cable connectors to the motor.
There are latches on each connector. DO NOT PULL ON THE WIRES.
The plugs remove easily when properly released.

4. Locate the two standard ¼" hex head bolts at the rear of the control

housing (at the back end of the control opposite the shaft end). Refer to
Figure 24. Remove these two bolts from the motor and control assembly

while holding the motor in a way that will prevent the motor or control
from falling when the bolts are removed. If an ECM2.0 control is being
replaced (recognized by an aluminum casting rather that a deep-drawn
black steel can housing the electronics), remove only the hex-head bolts.

DO NOT REMOVE THE TORX-HEAD SCREWS.

5. The control module is now free of mechanical attachment to the
motor endshield but is still connected by a plug and three wires inside
the control. Carefully rotate the control to gain access to the plug at

the control end of the wires. With thumb and forenger, reach the latch

holding the plug to the control and release it by squeezing the latch tab
and the opposite side of the connector plug and gently pulling the plug
out of the connector socket in the control. DO NOT PULL ON THE

WIRES. GRIP THE PLUG ONLY.

6. The control module is now completely detached from the motor.
Verify with a standard ohmmeter that the resistance from each motor
lead (in the motor plug just removed) to the motor shell is >100K ohms.
Refer to Figure 25. (Measure to unpainted motor end plate.) If any motor
lead fails this test, do not proceed to install the control module. THE
MOTOR IS DEFECTIVE AND MUST BE REPLACED. Installing
the new control module will cause it to fail also.

7. Verify that the replacement control is correct for your application.

Refer to the manufacturer's authorized replacement list. USING THE
WRONG CONTROL WILL RESULT IN IMPROPER OR NO
BLOWER OPERATION. Orient the control module so that the 3-wire

motor plug can be inserted into the socket in the control. Carefully insert
the plug and press it into the socket until it latches. A SLIGHT CLICK
WILL BE HEARD WHEN PROPERLY INSERTED.
the replacement control per one of the three following paragraphs, 8a, 8b or 8c.

8a. IF REPLACING AN ECM 2.0 CONTROL (control in cast
aluminum can with air vents on the back of the can) WITH AN ECM

2.3 CONTROL (control containing black potting for water protection
in black deep-drawn steel case with no vents in the bottom of the can),
locate the two through-bolts and plastic tab that are packed with the
replacement control. Insert the plastic tab into the slot at the perimeter
of the open end of the can so that the pin is located on the inside of the
perimeter of the can. Rotate the can so that the tab inserts into the tab
locater hole in the endshield of the motor. Using the two through-bolts
provided with the replacement control, reattach the can to the motor.

THE TWO THROUGH-BOL TS PROVIDED WITH THE
REPLACEMENT ECM 2.3 CONTROL ARE SHORTER THAN
THE BOLTS ORIGINALLY REMOVED FROM THE ECM 2.0
CONTROL AND MUST BE USED IF SECURE ATTACHMENT OF
THE CONTROL TO THE MOTOR IS TO BE ACHIEVED.

DO NOT OVERTIGHTEN THE BOLTS.

Finish installing

8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3
CONTROL, the plastic tab and shorter through-bolts are not needed. The
control can be oriented in two positions 180° apart. MAKE SURE THE

ORIENTATION YOU SELECT FOR REPLACING THE CONTROL
ASSURES THE CONTROL'S CABLE CONNECTORS WILL BE
LOCATED DOWNWARD IN THE APPLICATION SO THA T WATER
CANNOT RUN DOWN THE CABLES AND INTO THE CONTROL.

Simply orient the new control to the motor's endshield, insert bolts, and

tighten. DO NOT OVERTIGHTEN THE BOLTS.
8c. IF REPLACING AN ECM 2.0 CONTROL WITH AN ECM 2.0

CONTROL (It is recommended that ECM 2.3 controls be used for all
replacements), the new control must be attached to the motor using through

bolts identical to those removed with the original control. DO NOT
OVERTIGHTEN THE BOLTS.

9. Reinstall the blower/motor assembly into the HVAC equipment.

Follow the manufacturer's suggested procedures.

10. Plug the 16-pin control plug into the motor. The plug is keyed.
Make sure the connector is properly seated and latched.

11. Plug the 5-pin power connector into the motor. Even though the
plug is keyed, OBSERVE THE PROPER ORIENTATION. DO NOT
FORCE THE CONNECTOR. It plugs in very easily when properly
oriented. REVERSING THIS PLUG WILL CAUSE IMMEDIATE

FAILURE OF THE CONTROL MODULE.

12.

Final installation check. Make sure the motor is installed as follows:
a. Unit is as far INTO the blower housing as possible.
b. Belly bands are not on the control module or covering vent holes.
c. Motor connectors should be oriented between the 4 o’clock and 8

o’clock positions when the blower is positioned in its nal

location and orientation.
d. Add a drip loop to the cables so that water cannot enter the motor
by draining down the cables. Refer to Figure 26.

The installation is now complete. Reapply the AC power to the HVAC
equipment and verify that the new motor control module is working

properly. Follow the manufacturer's procedures for disposition of the old

control module.

Back of
Control

Figure 25

Figure 4

Winding Test

Motor OK when
R > 100k ohm

Figure 26

Figure 26

Figure 5

Drip Loop

Connector Orientation

Between 4 and 8 o'clock

Drip Loop

Only remove
Hex Head Bolts

ECM 2.0

Note:
Use the shorter
bolts and
alignment pin
supplied when
replacing an
ECM 2.0
control.

Figure 24 Figure 25

Figure 24

Figure 3

Control Disassembly

Motor Connector
(3-pin)

ECM

2.3/2.5

Push until
Latch Seats
Over Ramp

From Motor

Circuit
Board

Power Connector
(5-pin)

Hex-head Screws

Motor

Motor Connector
(3-pin)

Control Connector
(16-pin)

Manual 2100-600
Page 36 of 38

FAN BLADE SETTING DIMENSIONS

Any service work requiring removal or adjustment
in the fan and/or motor area will require that the
dimensions in Table 5 be checked and blade adjusted in
or out of the motor shaft accordingly.

FIGURE 27

FAN BLADE SETTING

R-410A

REFRIGERANT CHARGE

This unit was charged at the factory with the quantity of
refrigerant listed on the serial plate. AHRI capacity and

efciency ratings were determined by testing with this

refrigerant charge quantity.
The following pressure tables show nominal pressures

for the units. Since many installation specic situations

can affect the pressure readings, this information should

only be used by certied technicians as a guide for

evaluating proper system performance. They shall not
be used to adjust charge. If charge is in doubt, reclaim,
evacuate and recharge the unit to the serial plate charge.

TABLE 5

FAN BLADE DIMENSIONS

MODEL

All

Q**A2

Models

DIMENSION A

(INCHES)

.750

TABLE 6

INDOOR BLOWER PERFORMANCE

Model Rated ESP

Q24A2 
Q30A2 .15 0.8 1000 1000 910
Q36A2 .15 0.8 1200 1000 1000 1175
Q42A2 .15 0.8 1200 1000 1000 1175
Q48A2 .15 0.8 1400 1100 1100 1175
Q60A2 .20 0.5 1550 1250 1250 1400

NOTE: These units are equipped with a variable speed (ECM) indoor motor that automatically adjust itself to maintain

approximately the same rate of indoor airow in both heating and cooling, dry and wet coil conditions and at

both 230/208 or 460 volts.

.10 0.5 800 800 700

j

Max. ESPRated CFM



Optional

CFM



Continuous

CFM

CFM @

Max. ESP

jMaximumESP(inchesWC)showniswith1"thickdisposablelter(reducedby.2for2"lter).

Rated CFMforductedapplications–requiredformaximumperformancerating.ToobtainfullCFMonmodelsQ36A2,Q42A2,Q48A2and

 Q60A2connectthepinkjumperwire(provided)toterminal#G2and#Yonthelowvoltageterminalblocklocatedinthecircuitbreakerbox.

Optional CFM–theunitisshippedfromthefactorysettooperateattheoptionalCFMlevelshown.Thisprovidesloweroperatingsound

 levelsfornon-ducted,freedischargeapplications.Thisreducessystemcapacityperformancebyapproximately2%atthesameenergy 
 efciency.

ContinuousfanCFMisthetotalairbeingcirculatedduringcontinuousfanmode.

ModelQ24A2–whenoperatingon2ndstageheatingtheindoorairwillincreaseto1000CFM.

Manual 2100-600
Page 37 of 38

TABLE 7

COOLING PRESSURE

(ALL TEMPERATURES IN DEGREES F)

MODEL

Q24A2

Q30A2

Q36A2

Q42A2

Q48A2

Q60A2

RETURN

AIR

TEMP.

75 DB

62 WB

80 DB

67 WB

85 DB

72 WB

75 DB

62 WB

80 DB

67 WB

85 DB

72 WB

75 DB

62 WB

80 DB

67 WB

85 DB

72 WB

75 DB

62 WB

80 DB

67 WB

85 DB

72 WB

75 DB

62 WB

80 DB

67 WB

85 DB

72 WB

75 DB

62 WB

80 DB

67 WB

85 DB

72 WB

PRESSURE

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

AIR TEMPERATURE ENTERING OUTDOOR COIL

75 80 85 90 95 100 105 110 115

116
314

124
322

128
333

119
321

127
329

131
341

112
347

120
356

124
368

116
356

124
365

128
378

119
343

127
352

131
364

112
362

120
371

124
384

119
335

127
344

131
356

121
344

129
353

134
365

118
373

126
383

130
396

119
380

127
390

131
404

121
366

129
375

134
388

116
386

124
396

128
410

122
358

130
367

135
380

122
368

131
377

136
390

123
401

132
411

137
425

122
406

130
416

135
431

122
390

131
400

136
414

120
410

128
421

132
436

124
380

133
390

138
404

124
391

133
401

138
415

128
428

137
439

142
454

124
431

133
442

138
457

124
414

133
425

138
440

122
436

130
447

135
463

127
404

134
414

141
428

127
414

136
425

141
440

132
454

141
440

146
482

127
457

136
469

141
485

127
440

135
450

141
467

124
462

131
474

138
491

130
428

139
439

144
454

129
437

138
448

143
464

136
481

145
493

150
510

129
483

138
495

143
512

129
466

138
478

143
495

125
488

134
500

139
518

132
452

141
464

146
480

131
460

140
472

145
489

137
508

147
521

152
539

131
509

140
522

145
540

131
493

140
506

145
524

126
514

135
527

140
545

134
478

143
490

148
507

133
484

142
496

147
513

139
534

149
548

154
567

133
535

142
549

147
568

134
522

143
535

148
554

126
541

135
555

140
574

136
503

145
516

150
534

135
507

144
520

149
538

140
561

150
575

155
595

135
563

144
577

149
597

136
551

145
565

150
585

125
568

134
583

139
603

Low side pressure ± 4 psig
High side pressure ± 10 psig

TablesarebaseduponratedCFM(airow)acrosstheevaporatorcoil.Ifthereisanydoubtastocorrect

operating charge being in the system, the charge should be removed, system evacuated and recharged to
serial plate instruction

s.

Manual 2100-600
Page 38 of 38