Bard I36Z1-A, I36Z1-B, I36Z1-C, I48Z1-A, I48Z1-B Installation Instructions Manual

INSTALLATION INSTRUCTIONS

MIS-3116

I-TEC SERIES

PACKAGED HEAT PUMP

Models:

I36Z1-A
I36Z1-B
I36Z1-C

I48Z1-A
I48Z1-B
I48Z1-C

I60Z1-A
I60Z1-B
I60Z1-C

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

www.bardhvac.com

Manual: 2100-578E
Supersedes: 2100-578D
Date: 11-10-14

Page 1 of 41

CONTENTS

Getting Other Information and Publications

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

General ......................................................................... 4

 ANSIZ535.5Denitions................................................ 4

I-TEC General Information

I-TEC Model Nomenclature .......................................... 5

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

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

Handling Unit After Removal From Skid ....................... 8

Required Steps after Final Placement ........................ 10

Minimum Installation Clearances ................................ 10

Securing Unit to Structure ........................................... 10

Seismic Considerations .............................................. 10

Rubber Mat ................................................................. 10

Duct Work ................................................................... 16

Filters .......................................................................... 16

Condensate Drain ....................................................... 17

With No Vent Option ................................................... 17

With Commercial Room Ventilator .............................. 17

Installation Instructions

Mounting the Unit ........................................................ 20

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

Wiring — Low Voltage Wiring ...................................... 21

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

Start Up

R-410A Refrigerant Required ......................................... 26

Topping Off System Charge ........................................... 26

Safety Practices.............................................................. 26

Description of Standard Equipment ................................ 26

Important Installer Note .................................................. 26

Phase Monitor ................................................................ 26

Three Phase Scroll Compressor .................................... 26

Service Hints .................................................................. 26

Sequence of Operation................................................... 27

Pressure Service Ports ................................................... 27

Defrost Cycle .................................................................. 28

I-TEC Commercial Room Ventilator System

General Description .................................................... 29

Control Wiring ............................................................. 29

Recommended Control Sequences ............................ 29

Setting the Ventilation CFM Levels ............................. 29

Annual Maintenance ..................................................... 33

Troubleshooting

Solid State HP Control Troubleshooting Procedure ....... 34

Checking Temperature Sensor ....................................... 35

Troubleshooting ECM™ 142R Motor .....................36 & 37

Replacing the Motor .......................................................37

Troubleshooting Indoor ECM™ Motor ....................38 & 39

Fan Blade Setting Dimensions ....................................... 40

Refrigerant Charge ......................................................... 40

Figures

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

Center of Gravity .......................................... 8

Figure 2A Unit on Lift .................................................... 8

Figure 2B Unit Side....................................................... 8

Wall Mounting Bracket Location ................................... 10

Bracket Wall Sect. View & Wood Framed Install ...........11

Figure 3 Compressor Shipping Bolts........................ 12

Figure 4 Removal of Air Duct ................................... 12

Figure 5A Ducted Application ..................................... 13

Figure 5B 3" Riser Application .................................... 13

Figure 5C 6" Riser Application .................................... 14

Figure 5D Req'd. Clearances & Rec. Access ............. 15

Figure 6 Supply Duct Connections ........................... 16

Figure 7 Filter Location............................................. 16

Figure 8 Drain Locations .......................................... 17

Figures 9A & 9B Unit Mounting ............................18 & 19

Figure 10 Component Location .................................. 20

Figure 11 Basic Heat Pump w/No Vent Pkg. .............. 22

Figure 12 Heat Pump w/CRV, without CO
Figure 13 Heat Pump with CRV & CO

Figure 14 Defrost Cycle .............................................. 28

 Figure15 CRVMotorSpeed/CFMConguration ....... 30

Figure 16 CRV Speed Change Terminal Access ........ 31

 Figure17 VentilationAirowDiagram ........................ 32

Figure 18 Control Disassembly .................................. 39

Figure 19 Winding Test ............................................... 39

Figure 20 Drip Loop.................................................... 39

Figure 21 Control Connector Motor Half .................... 40

Control .... 23

2

Control .......... 24

2

Tables

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

Table 1A Indoor Blower Performance........................... 5

Table2 Elec.Specications ....................................... 6

Center of Gravity Table .................................. 8

Table 3 Operating Voltage Range ............................ 21

Table 4 Wall Thermostats ......................................... 21

Table 5 Troubleshooting ........................................... 34

Table 6 Temperature vs Resistance of

Temperature Sensor .................................... 35

Table 7 Troubleshooting ECM™ 142R .................... 37

Table 8 Cooling Mode .............................................. 37

Table 9 Heat Pump Mode ........................................ 37

Troubleshooting ECM™ Blower Motors ....................... 40

Power Connector ......................................................... 40

Table 10A Pressures: Full Load Cooling
Table 10B Pressures: Full Load Heating
Table 11A Pressures: Part Load Cooling
Table 11B Pressures: Part Load Heating

I36Z-I60Z ..... 41

I36Z-I60Z ..... 41

I36Z-I60Z .... 41

I36Z-I60Z .... 41

Manual 2100-578E
Page 2 of 41

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 Warm 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 2100-578E
Page 3 of 41

GENERAL

The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.

The I-TEC must be installed with the Bard
manufactured IWS wall sleeve and ILG louver
grille accessories. These are sold as separate
accessories. Any substitutions will void the
manufacturer’s warranty.

The unit is designed for use with or without ductwork.
For use without ductwork, Plenum Box IPBDFZ18­color (18" height) or IPBDFZ12-color (12" height) is
recommended.

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

These instructions and any instructions packaged
with any separate equipment required to make up the
entire heating and 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.

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 or heat gain 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.

ANSI Z535.5 Denitions:

• Danger: Indicate[s] a hazardous situation which, if
not avoided, will result in death or serious injury. The
signal word “DANGER” is to be limited to the most
extreme situations. DANGER [signs] should not be used
for property damage hazards unless personal injury risk
appropriate to these levels is also involved.

• Warning: Indicate[s] a hazardous situation which,
if not avoided, could result in death or serious injury.
WARNING [signs] should not be used for property
damage hazards unless personal injury risk appropriate to
this level is also involved.

• Caution: Indicate[s] a hazardous situation which, if
not avoided, could result in minor or moderate injury.
CAUTION [signs] without a safety alert symbol may be
used to alert against unsafe practices that can result in
property damage only.

• Notice: [this header is] preferred to address practices
not related to personal injury. The safety alert symbol
shall not be used with this signal word. As an alternative
to “NOTICE” the word “CAUTION” without the safety
alert symbol may be used to indicate a message not
related to personal injury.

Manual 2100-578E
Page 4 of 41

I-TEC Series General Information

I-TEC MODEL NOMENCLATURE Z-Version (CA) 2-Stage Air Source Heat Pumps

I 36 Z 1 – A 0Z M P 1 X X 2

MODEL
SERIES

NOMINAL
CAPACITY

36 = 36,000 BTUH
48 = 48,000
60 = 60,000

SYSTEM TYPE:

H/P CA Design

REVISION

SPECIAL UNITS

(–) = Standard
C = 460V Circuit

Breaker

VOLTS & PHASE |

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

ELECTRIC HEAT

0Z = No heat w/breaker
04 = 4KW 1-Phase
05 = 5KW 1-Phase
06 = 6KW 3-Phase
09 = 9KW 3-Phase
10 = 10KW 1-Phase
15 = 15KW 1 & 3-Phase
18 = 18KW 3-Phase
20 = 20KW 1-Phase

VENTILATION OPTIONS

B = Blank-Off Plate
M = Multi-Speed CRV

COLOR OPTIONS

X - Beige paint
1 - White paint
4 - Gray paint

FILTER OPTIONS

P = 2" Pleated MERV 8
M = 2" Pleated MERV 11
N = 2" Pleated MERV 13

VINYL GRAPHICS OPTIONS

X - None
A - Letter Assigned as Req'd.

CONTROLS

X = 24V Terminal Block Only w/o
CompleteStat
1 = CompleteStat THO (Temp,
Humidity & Occupancy)
2 = CompleteStat THO w/CO2
3 = CompleteStat THO w/Ethernet
4 = CompleteStat THO w/CO2 &
Ethernet

Note:CompleteStatmustbeeld

installed & wired. All units have

COIL TREATMENT

X - Std. Hydrophilic Fin Evap. &
Uncoated Alum. Cond. Coil
1 - Phenolic Coated ID Coil
2 - Phenolic Coated OD Coil
3 - Phenolic Coated ID & OD Coil

TABLE 1

FACTORY BUILT-IN ELECTRIC HEAT TABLE

Models I36Z1-A I36Z1-B I36Z1-C I48Z1-A

KW

10.0 34,130 25,598 34,130 25,598 34,130 25,598

15.0 51,195 38,396 51,195 38,396 51,195 51,195 38,396 51,195 38,396 51,195 51,195 38,396

18.0 61,434 46,076 61,434

20.0 68,260 51,195 68,260 51,195

240V-1 208V-1 240V-3 208V-3 460V-3 240V-1 208V-1 240V-3 208V-3 460V-3 240V-1 208V-1

BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH BTUH

4.0 13,652 10,239

5.0 17,065 12,799 17,065 12,799 17,065 12,799

6.0 20,478 15,359 20,478 20,478 15,359 20,478

9.0 30,717 23,038 30,717 30,717 23,038 30,717

I48Z1-B
I60Z1-B

I48Z1-C
I60Z1-C

24V terminal block.

I60Z1-A

Model Rated ESP Max. ESP

I36Z1

I48Z1

I60Z1

.15 0.50 600 1150 850 700 1400

.20 0.50 725 1500 1050 700 1400

.20 0.50 850 1700 1200 700 1400

Motor will deliver consistent CFM through voltage supply range with no deterioration.
kContinuous fan CFM is the total air being circulated during continuous fan mode.
lWilloperateatratedFullLoadAirowwhenoperatingwithHeatPump.
mWill occur automatically with a call for "W3" or "Emergency Heat" signal from the thermostat (Heat Pump Operation is terminated at this condition).

TABLE 1A

INDOOR BLOWER PERFORMANCE 

k

Continuous

CFM

Rated 2nd

Stage CFM

Rated 1st

Stage CFM

l

5 - 9 KW

CFM

13.5 - 18

KW CFM

Manual 2100-578E
Page 5 of 41

m

TABLE 2

ELECTRICAL SPECIFICATIONS

Single Circuit Multiple Circuit

Rated

MODEL

Volts,

Hertz &

Phase

I36Z1-A0Z

A05

230/208-1

A10

 A15

I36Z1-B0Z

B06

230/208-3

B09

 B15

I36Z1-C0Z

C06

460-3

C09

 C15

I48Z1-A0Z

A04
A05

230/208-1

A10

 A15
 A20

I48Z1-B0Z

B06

230/208-3

B09

 B15
 B18

I48Z1-C0Z

C06

230/208-1

C09

 C15
 C18

I60Z1-A0Z

A05

230/208-1

A10

 A15
 A20

I60Z1-B0Z

B06

230/208-3

B09

 B15
 B18

I60Z1-C0Z

C06

460-3

C09

 C15
 C18

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 (3) current carrying conductors are in a raceway.

MaximumsizeofthetimedelayfuseorHVAC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.
Maximum KW that can operate with the heat pump is 10KW for 1-Phase and 9KW for 3-Phase.

Represents Electric Heat only. Electric Control Circuit will lock-out Heat Pump Operation.

No.

Field

Power

Circuits

1

1
1 or 2
1 or 2

1

1

1

1

1

1

1

1

1

1
1 or 2
1 or 2
1 or 2
1 or 2

1

1

1

1

1

1

1

1

1

1

1
1 or 2
1 or 2
1 or 2
1 or 2

1

1

1

1
1 or 2

1

1

1

1

1

Minimum

Circuit

Ampacity

26
52
78
84

22
40
49
51

11
20
24
28

34
54
59
85
85

110

26
44
53
53
53

15
25
29
29
29

44
70
96
96

112

31
49
58
58
63

15
25
29
29
29

Maximum

External

Fuse or

Ckt. Brkr.

40
60
80
90

30
45
50
60

15
20
25
30

50
60
70
90
90

110

35
50
60
60
60

20
30
30
30
30

60

80
100
100
120

45

60

60

60

70

20

30

30

30

30

Field

Power

Wire

Size

8
6
4
4

10

8
8
6

14
12
10
10

8
6
6
3
3
2

8
8
6
6
6

12
10
10
10
10

8
4
3
3
2

8
8
6
6
6

12
10
10
10
10

Ground

Wire

10
10

10
10
10
10

14
12
10
10

10
10

10
10
10
10
10

12
10
10
10
10

10

10
10
10
10

12
10
10
10
10

Minimum

Circuit

Ampacity

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

8

26265252404060

8

8

35

8

35

8

35

6

59

8

44

8

44

8

44

6

60

8 31 54 45 60 8 6 10 10

26
52
52
52

26
52
52
52

Maximum

External

Fuse or Ckt.

Breaker

60

45

30

45

60

45

60

60

60

60

30

60

60

60

60

60

60

Field Power

Wire Size

8

6

8

6

8

10

8

6

8

6

6

6

8

10

8

6

8

6

6

6

Ground Wire

Size

101010

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

Manual 2100-578E
Page 6 of 41

Back View

Air

Supply

Sleeve

Outer

Inner

Sleeve

Air

Return

RUBBER MATT

PART #5451-027

MIS-3114 A

WIRE TIES

PART #7950-031

"

3

4

1

(2) Opt.

Unit Drain

Entrances

"

4

3

1

Unit Specification Sheet

"

3

8

31

FIGURE 1 — UNIT DIMENSIONS

20" x 24" Supply Frame

"

7

26

Total Depth

8

Right Side View

High Voltage

Entrance

"

4

3

18

2"

Sides Removed

30" With Doors and

Wire Channel

Electric Heat

Outer

Sleeve

Openings

(2) Return

Hinges

(4) Lift-Off

Inner

Sleeve

94"

Locking

Door Latch

Return

Electrical

Disconnect

Air

" 50

1

4

"

3

4

71

Upper

Section

(2) Side

Handles

Drains

(2) Unit

58"

Door Latch

Locking

8"

"

8

1

22

"

1

2

24

"

1

4

22

Lower

Section

" 15

5

8

RUBBER MATT &

FRONT TRIM LOCATION

"

3

4

3

(Remove Sides)

Side Forklift Holes

Front Forklift Holes

(Remove Front Trim)

2

20" 18"

61 " Total Width

" With Sides Removed

1

8

46

"

1

4

3

Top View

24"

"

4

1

28

Entrance

Low Voltage

"

1

4

9

Front View

Filters

Return Air

(2) 2"x24"x30"

Control Panel

Air Filters

(2) 16" x 25"

Vent Exhaust

Manual 2100-578E
Page 7 of 41

CENTER OF GRAVITY

CENTER OF GRAVITY

"X"

"Y"

FRONT OF UNIT

Unit Tested

I36Z1-A, B 13½" 31" 43½" 47"

I36Z1-C 13½" 31½" 43½" 47"

I48Z1-A, B 13½" 31" 43½" 47"

I48Z1-C 13½" 31½" 43½" 47"

I60Z1-A, B 13½" 31" 43½" 47"

I60Z1-C 13½" 31½" 43½" 47"

DOOR TO CENTER

"X" Dimension "Y" Dimension "Z" Dimension "Z" Dimension

LEFT SIDE

TO CENTER

FLOOR TO CENTER

CRV & ERV

FLOOR TO CENTER

NO VENT

"Z"

MIS-3268

Manual 2100-578E
Page 8 of 41

SHIPPING DAMAGE

Upon receipt of equipment, the unit should be checked
for external signs of shipping damage. The skid must
remain attached 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 during installation and removal from the
skid. Extreme caution must be taken to prevent injury
to personnel and damage to the unit. Use appropriate
safety equipment, including gloves when handling.
Failure to do so may result in serious injury.

A forklift or a lift rated for the load (Figure 2A) is
required to lift the unit off from the skid. This unit is
top heavy and should never be tipped while moving it.

The I-TEC is designed to be lifted off the skid from the
front or rear of the unit without having to remove any
doors or side panels. See Figure 1 for fork openings.
The shipping brackets on front and rear of the unit must
be removed and discarded. The unit can now be lifted
straight up and the skid can be slid out from underneath.

Tip unit from left side only.
Failure to do so may result in injury due to unit
top-heaviness or compressor damage!

HANDLING UNIT AFTER REMOVAL FROM SKID

If a wide and tall opening exists, the I-TEC can be moved as a
complete assembled unit. If not, use the following directions for
dis-assembly to allow it to pass through a 36" wide door.

1. Depress and release both top & bottom door latches and
open doors.

2. Remove doors by lifting straight up & off from the hinge pins.

3. Remove cabinet sides by rst removing the four (4) sheet metal

screws from the front (leading edge) of the side panel. The panel
will not fall off. Swing the panel away from the chassis 20-30
degrees & then pull forward from the two (2) tabs supporting
the rear edge. At this point, the unit can be tipped on its left
side enough to get dolly carts under it. Use dolly carts to
move unit into installation area. Use care not to damage
vent wire harness. This method is not suggested due to unit
weight and if a forklift or unit lift is available, continue with

the following steps for separation of top section & bottom base.

4. On each side of the unit is a tie plate that secures the top &
bottom sections with four (4) cap bolts. Using a ½" wrench
or socket, remove these screws from both plates & set aside.

5. If the unit is equipped with a CRV, you must unplug the
wire harness on the left-hand side of the control box.

6. A forklift or a lift rated for the load is required to lift the
top section off from the bottom base. Do not attempt to
do this manually! Failure to do so could result in the
unit tipping over & causing bodily injury &/or damage to
the unit.

7. The top section can be forked from either the RH or LH
side. See Figure 1 for fork openings.

8. Carefully lift the top section straight up avoiding tipping.

9. Move the top section through the doorway & place on at

surface free of debris.

10. The bottom base can now be moved through the doorway
the same way.

11. Reassemble the unit by reversing this procedure.

FIGURE 2A UNIT ON LIFT

LEFT
SIDE
of
UNIT



FIGURE 2B UNIT SIDE

CRV

(4) CAP BOLTS





FORK OPENING

(Visible after
removing tie plate)

HARNESS CONNECTION



(Covers entire width; shortened for illustration
purposes to show Fork Openings)

TIE PLATE



Manual 2100-578E
Page 9 of 41

REQUIRED STEPS AFTER FINAL PLACEMENT

MIS-3029

2"

1 11/16"

43 3/8"

Ø1/4"

94" FROM BOTTOM

OF BRACKET TO

FLOOR WITHOUT

RISER KIT

7/8"

3/4"

1 1/2"

BRACKET

The compressor is secured to the base with two (2) bolts
for shipping. Although the unit will perform as designed
with the shipping bolts in place, there may be noticeable
additional noise and vibration noted. To obtain the lowest
noise and vibration levels, remove the shipping bolts after

the unit is in its nal operating location. To gain access

to the compressor, the compressor access panel must be
removed (Figure 7). Once this panel is removed, the CRV
air duct must be removed. See Figure 4.

The air duct is removed by pulling it straight toward you;
there are no screws securing it in place. Both the top and
bottom slide toward you at the same time (pull hard).
Once removed, the compressor is visible as well as the
tags on the shipping bolts (Figure 3).

After the compressor shipping bolts have been removed,
the CRV air duct can be slid back in place and the
compressor access panel attached.

MINIMUM INSTALLATION CLEARANCES

The minimum installation height to the bottom of the

roof or xed ceiling for ducted applications is 9 ft. 7 in.

This provides enough clearance to install the duct work.
See Figure 5A.

The IWS Series wall sleeve has a built-in vertical

adjustment to t window sill heights from 31-34 inches.

If additional height is required, two riser platform
accessories are available. The IRZ3 increases the
unit height by 3 inches (Figure 5B) and the IRZ6 by 6
inches (Figure 5C).

Several construction options are available for unit

installation of the IZ Series. Serviceability and lter

access must be considered before installing. See Figure
5D for required clearances and recommended service
access dimensions.

SECURING UNIT TO STRUCTURE

Shipped with the I-TEC unit is a wall mounting bracket
(screwed to shipping skid on backside of unit). This bracket
can be utilized to secure the top portion of the unit to the

wall using the appropriate eld supplied hardware based

upon the material you are fastening to. (There are several
offset holes, sized to accept up to a 1/4" diameter fastener
that will easily allow you to hit studs on a framed wall.) See

BRACKET SECTION VIEW (Page 10) for locating this top
wall bracket which will need to be applied after the unit is

located in the nal position.

Additional/optional mounting holes for up to a 3/8"
diameter fastener are also available in the backside and
base of the unit. These can be accessed by:

• removing the air lters (uppermost set)

• removing the compressor section service door (lower set)

• removing vent door and vent partitions (base set)

Refer to WOOD FRAMED INSTALLATION (Page 10) for
additional framing required to secure unit to wall.

The additional/optional mounting holes will require a
long extension to drive the fasteners.

SEISMIC CONSIDERATIONS

The I-TEC product features several locations for product
securement but all site conditions are different. Consult
with a licensed Seismic Engineer to advise of particular
needs when attaching the I-TEC unit to the structure.

RUBBER MAT

Unit rests on rubber mat placed under base rails during

installation. Place mat on oor ush with wall and

centered over wall opening.

WALL MOUNTING

BRACKET LOCATION

Manual 2100-578E
Page 10 of 41

35"

17

1
2

"

"

3
4

18 7

3
8

"

(4) optional Unit

Mounting holes

C

L

C

L

Mounting holes

(4) optional Unit

Bracket

*

** Separate telescoping sleeves available for different wall thicknesses.

Centered on

Optional Top

*

* Higher Sill Heights Acheivable With Base Kit.

Opening

Wall

Room Floor Level

Outside

Sleeve Mounting

Hole Locations

FLOOR MOUNTING HOLE
& CENTERLINES

8

20

7

6"

8

20 "

2

32

1

7

"

"29

"

17

8"

56

8"

20

7
8

"

8

""94

1

31" Min.

20"

34" Max.

3"

1

48-1/2" Max.

48" Min.

3

Centered

8

Centered

43-1/4" Max.

"

49

16

8

"

20"

20"

20"

43

7

42-3/4" Min.

"

16

11

15

4

43

3
8

"

Duct

Grille

Floor

Optional

Outside

Ceiling

Wall Sleeve**

Telescoping

Wall

Unit

Optional

Trim or

Supply Duct

Box

31" Min.

34" Max.

C

L

Wall Section View

Right Side View

Front (Wall Only) View

C

L

MIS-3196 A

6.00

41.75

56.50

29.568.00

8.0036.88

20.88

MIS-3197

(4) lower fastener

holes

Floor

riser kit. If unit uses riser kit add
appropriate dimension to height.

Inner wall

Unit

*

(4) Upper
fastener holes

* Height dimension shown without

BRACKET WALL SECTION VIEW

WOOD FRAMED INSTALLATION (for Wall Attachment)

Manual 2100-578E
Page 11 of 41

COMPRESSOR SHIPPING BOLTS

COMPRESSOR

SHIPPING BOLT



FIGURE 3

COMPRESSOR

SHIPPING BOLT



CRV

AIR DUCT

FIGURE 4

REMOVAL OF AIR DUCT

Manual 2100-578E
Page 12 of 41

INSTALLATION

9'-5"

MINIMUM

REQUIRED

HEIGHT

9'-10" MINIMUM
CLEARANCE
RECOMMENDED TO
BOTTOM OF ROOF
OR FIXED CEILING

3" RISER

FIELD SUPPLIED DUCT

MIS-3199

TURNING VANES
RECOMMENDED

MINIMUM

12"

4" MINIMUM FROM

TOP OF UNIT TO

DUCT BOTTOM

BOTTOM OF ROOF

FLOOR

OR FIXED CEILING

SUSPENDED
CEILING

20"

MINIMUM

7'-9 3/4"

UNIT HEIGHT

9'-7" MINIMUM
CLEARANCE
RECOMMENDED TO
BOTTOM OF ROOF
OR FIXED CEILING

9'-2"

MINIMUM

REQUIRED

INSTALLATION

HEIGHT

BOTTOM OF ROOF

FLOOR

OR FIXED CEILING

SUSPENDED
CEILING

20"

MINIMUM

7'-9 3/4"

UNIT HEIGHT

FIELD SUPPLIED DUCT

MIS-3198

TURNING VANES
RECOMMENDED

MINIMUM

12"

4" MINIMUM FROM

TOP OF UNIT TO

DUCT BOTTOM

FIGURE 5A

DUCTED APPLICATION – BASIC UNIT

FIGURE 5B

3" RISER APPLICATION

Manual 2100-578E
Page 13 of 41

INSTALLATION

9'-8"

MINIMUM

REQUIRED

HEIGHT

10'-1" MINIMUM
CLEARANCE
RECOMMENDED TO
BOTTOM OF ROOF
OR FIXED CEILING

6" RISER

FIELD SUPPLIED DUCT

MIS-3200

TURNING VANES
RECOMMENDED

MINIMUM

12"

4" MINIMUM FROM

TOP OF UNIT TO

DUCT BOTTOM

FLOOR

OR FIXED CEILING

BOTTOM OF ROOF

SUSPENDED
CEILING

20"

MINIMUM

7'-9 3/4"

UNIT HEIGHT

FIGURE 5C

6" RISER APPLICATION

Manual 2100-578E
Page 14 of 41

12" MIN.

REQUIRED CLEARANCES & RECOMMENDED ACCESS

WING WALL CONSTRUCTION TOP VIEW

FIGURE 5D

12"

MIN.

61 1/2"

CLOSET CONSTRUCTION TOP VIEW

61 1/2"

12" MIN.

48" MIN.

LEFT CORNER CONSTRUCTION TOP VIEW

12" MIN.

12" MIN.

31 3/8"

12"

MIN.

12" MIN.

FOR LEFT

SIDE

ACCESS

RECOMMENDED SERVICE

ACCESS DIMENSIONS

FILTERS

24" MIN.

24" MIN.

12" MIN.

FOR RIGHT

SIDE

ACCESS

0" REQUIRED

12" RECOMMENDED

RIGHT CORNER CONSTRUCTION TOP VIEW

0" REQUIRED

12" RECOMMENDED

48"

MIN. FOR

FILTER ACCESS

Unit can be located in corner
with 0" clearance as long as
other side is unobstructed

MIS-3230

Manual 2100-578E
Page 15 of 41

DUCT WORK

MIS-2959

SUPPLY DUCT AND
FASTENERS TO BE
FIELD SUPPLIED

24"

20"

BEND THE PROVIDED
SUPPLY FRAME FLANGES
UP FOR DUCT INSTALLATION

Any heat pump is more critical of proper operating
charge and an adequate duct system than a straight air
conditioning unit. 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 I-TEC series heat pump has provision to attach a
supply air duct to the top of the unit. Duct connection

size is 20 inches x 24 inches. The anges are shipped
at and must be bent upward using sheet metal anging
pliers. The duct work is eld supplied. See Figure 6 for

suggested attachment method.

Make sure to seal the slots in the bend-up ange at the
time of securing your ductwork to the ange. This can

be accomplished with either foil tape or caulk. Failing
to do so may cause air leakage/whistling of air.

FIGURE 6

SUPPLY DUCT CONNECTIONS

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 1A. 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 2-inch throw away lters (24 x 30) and two 1-inch
throw away lters (16 x 25) are supplied with each
unit. The 2-inch lters slide into brackets on both sides

for the return air openings. If a CRV vent option is

used, there are two (2) additional 1" throw away lters
included with that option. See Figure 7 for specic
locations. The lters are serviced from the inside of

the building by opening the cabinet doors, and do not
require any tools to access.

FIGURE 7

FILTER LOCATION

24" X 30" 2"

FILTERS

INDOOR

BLOWER

ACCESS

NOTE: Unit cabinet, supply air duct and duct free

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

The I-TEC series heat pumps are designed for use with
free return (non-ducted) and either duct free with the use
of IPBDFZ Series Plenum Box (18" or 12") or a duct
supply air system.

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

When used with a ducted supply, a Cabinet Extension
may be used to conceal the ductwork above the unit to
the ceiling. The ICX28 extends 28" above the unit for a
total height of 10'-2" or can be trimmed to any height.

Manual 2100-578E
Page 16 of 41

COMPRESSOR

ACCESS

ACCESS TO

WASHABLE

FILTERS



VENT & FLOOR

MOUNTING HOLE

ACCESS DOOR

MIS-3202

(2) Unit

Drain Entrances

Drain Area

Drains

Insulate

(2) Optional Unit

(2) Drain

Access

Locations

MIS-3115 A

(2) OPTIONAL DRAIN
HOLES IN BASE

WALL

BASE VIEW

16 1/2"

18 3/4"

7 3/16"

40 3/4"

35"

OPTIONAL FLOOR
MOUNTING HOLES

CONDENSATE DRAIN

There are two condensate drain connections from the
condenser drain pan (compressor area). These are
visible from the rear of the unit. Factory installed tubing
connects the two drains at a tee connection and then a
single drain hose with a barbed hose connector carries
the condensate to the draining option of your choice.
Enough tubing is provided to reach all drain options and
can be cut down in length.

The unit is shipped from the factory with the drain line
on the left-hand side as you look at the rear of the unit.
The tubing can be removed from the drain connections

and ipped for a right-hand drain. See Figure 8.

The drain can be routed directly through the oor or

through the wall. There are also two optional drain
locations in the lower rear back panel. See Figure 8.

The I-TEC design does not require a trap in the
condensate disposal tubing. Check your local codes to
see if a “P” trap is required.

For a stand pipe oor drain or through the wall, there is

adequate hose length to reach needed location behind the
unit. The lower rear portion of the cabinet is recessed
approximately 4 inches allowing room for a “P” trap (if

required) to be installed with the cabinet ush with the wall.

Keep in mind, the drain line must be able to be removed
from the unit if necessary to remove the unit from the wall.

Access plates are located on the rear of the unit for
servicing the drain trap. See Figure 8. If the drain line

is to be routed through an unconditioned space, it must
be protected from freezing.

The condensate drain line can also be routed back into
the unit through either the right-hand or left-hand
optional drain locations on the rear of the unit. The
hole is covered by insulation on the inside of the unit
and will have to be cut away. Located inside the unit,
about 12 inches in from the front on both the left and
right side are drain holes in the bottom of the base.
These holes are covered with insulation and are not
visible from inside vent option area. They are located
very close to the side panels and can be found by
pressing down on the insulation or looking at back of
vent option area (See Figure 8). Cut insulation away
to expose the hole. A drain trap can now be installed
inside of the cabinet, and the drain hose routed directly

through the oor.

Once the I-TEC is installed, the rear drains exiting the
condenser section can be easily serviced with removal
of the pre-painted metal sides (lift-off doors, remove
four [4] screws to remove side).

If side access is not available, the drain lines and trap
can be serviced by removing either one of the drain
access panels on the rear of the unit (in the ventialtion
package area.) See Figure 8.

After drain installation is complete, drain area must
be insulated for sound purposes with 45" x 24
piece of insulation. See Figure 8.

¾"

x 6"

WITH NO VENT OPTION

To remove the drain access panels in the rear of this
section, simply remove the front door/cover from the
box. Rear drain access panels are now visible on both
right-hand and left-hand sides in rear of box.

WITH COMMERCIAL ROOM VENTILATOR

1. Open hinged front doors.

2. Disconnect unit power to eliminate shock hazard.

3. Remove front cover/door of CRV vent package.

(Can leave lter access panels in place.)

4. Unplug wires coming in on left side from upper
unit section.

Unplug two wire harness from front (intake) blower.

5.

6. Remove two (2) screws securing front (intake)
blower and slide blower out of unit.

7. Remove four (4) screws that retian the partition
behind/beneath intake blower removed in Step #6.

8. Rear drain access panels are now visible on both
right-hand and left-hand sides in rear of box.

FIGURE 8 — DRAIN LOCATIONS

Manual 2100-578E
Page 17 of 41

D

REF.

A AND B

REF.

(4) 5/16" - 1/2" NON-TAPPING

REF.

E

REF.

(6) 5/16" - 3/4" NON-TAPPING

C

(4) 1-1/2" LONG SCREWS

REF.

E

(18) 5/16" - 3/4" SELF TAPPING

B

C

REF.

REF.

REF.

A

REF.

D

MIS-3014 A

Use (4) 1-1/2" Long

Louver Grille to

Outer Sleeve.

Screws to Attach

to Outer Sleeve

to Attach Inner Sleeve

Self Tapping Screws

Use (6) 3/4" Long

Unit Fan Shroud

Exhaust Sleeve to

Screws to Attach

Use (6) 3/4" Long

Use (12) 3/4" Long

to Attach Inner Sleeve
to Unit Back

Self Tapping Screws

Use (4) 1/2" Long
Screws to Attach
frame to Exhaust
Sleeve

Use (12) Field Supplied Concrete
or Wood Screws to Secure Outer
Sleeve to Structure.

outer sleeve.

IMPORTANT!

IMPORTANT!

between inner and

entire perimeter seam

seal between unit and sleeve.

IMPORTANT!

Doing so may compromise water

to not damage gasketing material.

Use care when inserting screws

Apply Caulk bead to

Apply liberal amount
of caulk to back of
flange before installing.

Pull Inner Frame
Out Until Flush
With Grille Mounting
Angle

FIGURE 9A

UNIT MOUNTING

Manual 2100-578E
Page 18 of 41

(SIZE VARIES)

OUTDOOR GRILLE

INSIDE WALL

AND SLEEVE

INTERIOR FLOOR

AREA BETWEEN WALL

OUTSIDE WALL
(INSULATED)

(INSULATED)

FILL INSULATION

UNIT

SLEEVE

MIS-3201 A

DRAIN AREA
(INSULATED WITH
6" BATT MATERIAL)

FIGURE 9B

UNIT MOUNTING

NOTICE: In order to achieve optimum sound reduction, the following areas need insulated:

1. Outside wall.

2. Area between sleeve and wall.

3. Drain area behind unit.

Manual 2100-578E
Page 19 of 41

INSTALLATION INSTRUCTIONS

MOUNTING THE UNIT

The wall sleeve is attached to the I-TEC unit from the
outside of the building. See Figures 9A & 9B. Refer
to wall sleeve Manual 2100-562 supplied with sleeve.

Following are the steps for attaching the I-TEC to the
wall sleeve.

1. Lift the unit into place making sure that it is
aligned side to side. Align unit with rubber mat.

2. Push the unit back until the rear panel touches
the sleeve gasket.

3. This unit must be level from side to side and
from front to back. If adjustments are necessary,
shim up under the base rails with sheets of metal
or any substance not affected by moisture.

4.

Attach the sleeve to the unit using the ten (10) ¾"

long self-tapping screws supplied with the sleeve.

5.

The exhaust sleeve has three (3) ¾" long screw slots

in each side ange. Line these up with the screw

engagement holes in the fan panel. Attach using six
(6) ¾" long pointed sheet metal screws supplied
with the sleeve. Extend the sleeve out until it is

ush with the louver grill attachment angles.

6.

Lock the sleeve in place using two (2) ½" long

pointed sheet metal screws on each side by
shooting through the slot into a pre-punched hole.

7. A bottom trim piece is shipped loose for
installation beneath the doors. Attach the trim
piece to the unit with screws provided.

8. The compressor is secured to the base with two

(2) bolts for shipping. Both bolts are identied

with a tag. Remove shipping bolts (Figure 3).

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 suitable for at least
75°C”. 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.

See “START UP” section for information on three
phase scroll compressor start-ups.

The eld wiring conduit connections are located on the top

right-hand corner of the unit with a wire raceway to feed
the wires down to the circuit breaker(s). See Figure 10.

REFRIGERANT PORT

Manual 2100-578E
Page 20 of 41

ELECTRIC HEAT

INDOOR BLOWER

LOW VOLTAGE

OUTDOOR FAN

VENT OPTION

FIGURE 10

COMPONENT LOCATION

WIRE RACEWAY

EVAPORATOR COIL

CONTROL PANEL

CONDENSER COIL

COMPRESSOR

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).

The standard unit includes a remote thermostat connection
terminal strip. See Figures 11 through 16 for connection
diagrams. Compatible thermostats are listed in Table 4.

TABLE 4 — WALL THERMOSTATS

“W2” terminal is rst stage electric heat (if equipped).
First stage electric heat can be operated simultaneously
with the heat pump operating.

“A” terminal is the ventilation input. This terminal
energizes any factory installed ventilation option.

“W3” terminal is second stage electric heat. When
“W3” terminal is energized, it locks out compressor
operation to limit discharge air temperature and
required branch circuit ampacity.

NOTE: For total and proper control using DDC,
a minimum of 9 controlled outputs are needed
when above 10KW Electric Heat is employed with
ventilation, a total of 8 controlled outputs with below
10KW Electric Heat with Ventilation, 7 controlled
outputs below 10KW Electric Heat with no ventilation,
7 controlled outputs with no Electric Heat, but with
ventilation, and 6 controlled outputs with no electric

heat and no ventilation. If Dehumidication Model

& Vent, 10 controlled outputs are needed when above
10KW Electric Heat is employed with ventilation.

Thermostat Predominant Features

8403-060

(1120-445)

8403-067

(CDT-2W40-LCD-RLY)

CS9B-THO

CS9B-THOC

CS9BE-THO

CS9BE-THOC

3 Stage Cool; 3 Stage Heat
Programmable/Non-Programmable Electronic
HP or Conventional
Auto or Manual changeover

Carbon Dioxide Sensor with LCD for
Sensor Readings

3 Stage Heat, 3 Stage Cool, Prog/NonProg, HP or Conv,
Auto or Manual Changeover, Humidity Sensor w/

dehumidication,MotionSensorw/IntelligentLearning

Control, BACnet-compatible

3 Stage Heat, 3 Stage Cool, Prog/NonProg, HP or Conv,
Auto or Manual Changeover, Humidity Sensor w/

dehumidication,CO2Sensor,MotionSensorw/Intelligent

Learning Control, BACnet-compatible

3 Stage Heat, 3 Stage Cool, Prog/NonProg, HP or Conv,
Auto or Manual Changeover, Humidity Sensor w/

dehumidication,MotionSensor,IntelligentLearningControl,

BACnet-compatible, Ethernet-compatible

3 Stage Heat, 3 Stage Cool, Prog/NonProg, HP or Conv,
Auto or Manual Changeover, Humidity Sensor w/

dehumidication,CO2Sensor,MotionSensorw/Intelligent

Learning Control, BACnet-compatible, Ethernet-compatible

LOW VOLTAGE CONNECTIONS

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

“G” terminal is the fan input.

“Y1” terminal is the compressor part load input.

“Y2” terminal is the compressor full load input.

“B/W1” terminal is the reversing valve input.

The reversing valve must be energized for heating mode.

“R” terminal is 24 VAC hot.

“C” terminal is 24 VAC grounded.

“L” terminal is compressor lockout output. This

terminal is activated on a high or low pressure trip and

condensate overow trip by the electronic heat pump

control. This is a 24 VAC output.

LOW VOLTAGE CONNECTIONS FOR DDC CONTROL

Fan Only Energize G

Cooling Part Load Energize G, Y1

Cooling Full Load Energize G, Y1, Y2

HP Heating Part Load Energize G, Y1, B/W1

HP Heating Full Load Energize G, Y1, Y2, B/W1

HP Heating Full Load + Electric Heat
(up to 10KW)

Heating with Bank #1 Electric Heat Only Energize G, W2

Emergency Heat (Heat pump operation
is negated for this condition)

Ventilation Energize A

Energize G, Y1, Y2, B/W1, W2

Energize G, W2, W3

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

Do not plug in or unplug blower motor
connectors while the power is on. Failure to do
so may result in motor failure.

Manual 2100-578E
Page 21 of 41

FIGURE 11

6 4W3 A DL

B/W1

Y2Y1RT GC W2

Low
Voltage
Term. Strip

R 3

SC

W1/E

A DLO/BY2Y1

24V

G

COM

W2

Completestat
Model #CS9B-THO or
Model #CS9BE-THO

SC

SC

GND

Thermostat

W1/E

A

YO/D

LO/BY2Y1R GC W2

Bard #8403-060

Blue

Yellow

Orange

Red

1

Not needed below 15KW

Factory installed jumper. Remove jumper and connect to N.C fire alarm

2

2

2

1

3

3 Relay Provided with Completestat

White

MIS-3203 A

BASIC HEAT PUMP WITH NO VENTILATION PACKAGE

Manual 2100-578E

Page 22 of 41

FIGURE 12

6 4W3 A DL

B/W1

Y2Y1RT GC W2

Low
Voltage
Term. Strip

R 3

COM

G

24V

Y1 Y2 O/B L DA GND

SCSCSC

Completestat
Model #CS9B-THO or
Model #CS9BE-THO

W2

W1/E

Thermostat

W1/E

A

YO/D

LO/BY2Y1R GC W2

Bard #8403-060

Blue

Yellow

Orange

MIS-3204 A

1

Not needed below 15KW.

2

to N.C fire alarm circuit if emergency shutdown required.

Factory installed jumper. Remove jumper and connect

3

Connect to "G" terminal when thermostat has "Occupancy Signal".

without "Occupancy Signal" is used.

Install a jumper between "G" and "A" only when thermostat

4

3

4

CRV Wiring Harness

1

2

BROWN/WHITE

ORANGE

BLACK/WHITE

RED/WHITE

2

Red

5

5 Relay Provided with Completestat

White

HEAT PUMP WITH CRV, WITHOUT CO2 CONTROL

Manual 2100-578E
Page 23 of 41

SC

W1/E

A DLO/BY2Y1

24V

G

COM

W2

Completestat
Model #CS9B-THO or
Model #CS9BE-THO

SC

SC

GND

5

2

1

6

W1/E

A

YO/D

LO/BY2Y1R GC W2

Thermostat
Bard #8403-060

W1/E

A DLO/BY2Y1

24V

G

COM

W2

Completestat
Model #CS9B-THO or
Model #CS9BE-THO

SC

SC

SC

GND

Thermostat

W1/E

A

YO/D

LO/BY2Y1R GC W2

Bard #8403-060

Blue

Yellow

Orange

MIS-3205 A

Not needed below 15KW.

1

B/W1

2

to N.C fire alarm circuit if emergency shutdown required.

Factory installed jumper. Remove jumper and connect

3

3

4

CRV Wiring Harness

RT

Connect to "G" terminal when thermostat has "Occupancy Signal".

4

BROWN/WHITE

ORANGE

BLACK/WHITE

RED/WHITE

1

W3 A DL 4Y2Y1

GC W2

Term. Strip

R 6

2

3

Voltage

Low

directly to "A" and do not use seperate CO2 controller.

If CS9B-THOC or CS9BE-THOC is used, connect "Brown/White"

5

5

Bard #8403-067

CO2 Control

6

6

Red

2

6

Relay Provided with Completestat

White

Install a jumper between "G" and "A" only when thermostat
without "Occupancy Signal" is used.

FIGURE 13

HEAT PUMP WITH CRV AND CO2 CONTROL

NOTE: Bard 8403-060

thermostat must be in
programmed operation
mode and in programmed
fan mode for ventilation to
function.

Manual 2100-578E

Page 24 of 41

START UP

THESE UNITS REQUIRE R-410A
REFRIGERANT AND POLYOL
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.
However, 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 charging 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 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 2100-578E
Page 25 of 41

START UP

DESCRIPTION OF STANDARD
EQUIPMENT

Solid State Electronic Heat Pump Control

Provides efcient 30, 60 or 90-minute defrost cycle.
A thermistor sensor and speed up terminal for service
along with a 8-minute defrost override are standard on
the electronic heat pump control. By default, the I-TEC
are factory shipped on the 90-minute defrost cycle.

High / Low Pressure Switch

Provides refrigerant circuit high pressure and loss
of charge protection. Includes lockout circuit built
into heat pump control that is resettable from room
thermostat.

Five Minute Compressor Time Delay

Provides short cycle protection for the compressor
which extends compressor life. Built into the electronic
heat pump control as standard.

Condensate Overow

Senses and provides system shut down if draining issue
causes water level to rise in the lower drain pan.

Low Ambient Control

The low ambient control permits cooling operation
down to 0°F outdoor ambient.

IMPORTANT INSTALLER NOTE

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

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.

All three phase scroll compressors used in the I-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.

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.

Switching to heating cycle at 75°F or higher outside
temperature may cause a nuisance trip of the remote
reset high pressure switch. Turn thermostat off,
then on to reset the high pressure switch.

3.

The heat pump wall thermostats perform multiple
functions. Be sure that all function switches are
correctly set for the desired operating mode before
trying to diagnose any reported service problems.

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

5.

Periodic cleaning of the outdoor coils to permit

full and unrestricted airow circulation is essential.

6. 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 wash outdoor coils as necessary.

7. All motors are sealed and require no oiling.

Manual 2100-578E
Page 26 of 41

SEQUENCE OF OPERATION

PRESSURE SERVICE PORTS

COOLING PART LOAD – Circuit R-Y1 makes at
thermostat pulling in 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.

COOLING FULL LOAD – Circuit R-Y1 & Y2
makes at the thermostat energizing the 2nd stage
solenoid in the compressor. The default position of
the compressor staging solenoid is non-energized. The
compressor will run at low capacity until this solenoid
is energized.

HEATING STAGE 1 – A 24V solenoid coil on
reversing valve controls heating cycle operation. Two
thermostat options, one allowing “Auto” changeover
from cycle to cycle and the other constantly energizing
solenoid coil during heating season and thus
eliminating pressure equalization noise except during
defrost, are to be used. On “Auto” option a circuit is
completed from R-B and R-Y1 on each heating “on”
cycle, energizing reversing valve solenoid and pulling
in compressor contactor starting compressor and
outdoor motor. R-G also make starting indoor blower
motor. Heat pump heating cycle now in operation.
The second option has no “Auto” changeover position,
but instead energizes the reversing valve solenoid
constantly whenever the system switch on subbase
is placed in “Heat” position, the “B” terminal being
constantly energized from R. A thermostat demand
for Stage 1 heat completes R-Y1 circuit, pulling in
compressor contactor starting compressor and outdoor
motor. R-G also make starting indoor blower motor.

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

HEATING STAGE 2 – Circuit R-Y1 & Y2 makes at
the thermostat energizing the 2nd stage solenoid in the
compressor.

Manual 2100-578E
Page 27 of 41

DEFROST CYCLE

120*

SW1SW

2 TIME (SEC)

OFF
OFF

ON
ON

OFF
ON
OFF

ON

30
60

180

MIS-2668 A

OFF

LOW PRESSURE BYPASS TIMER SWITCH
*(FACTORY SETTING 120 SECONDS)

ACCUMULATED DEFROST TIME TIMER
(FACTORY SETTING 60 MIN.)

ON

The defrost cycle is controlled by temperature and time
on the solid state heat pump control. See Figure 14.

When the outdoor temperature is in the lower
40°F temperature range or colder, the outdoor coil
temperature is 32°F or below. This coil temperature
is sensed by the coil temperature sensor mounted near
the bottom of the outdoor coil. Once coil temperature
reaches 30°F or below, the coil temperature sensor sends
a signal to the control logic of the heat pump control and
the defrost timer will start accumulating run time.

After 30, 60 or 90 minutes of heat pump operation at
30°F or below, the heat pump control will place the
system in the defrost mode. Factory default setting is 90
minutes.

During the defrost mode, the refrigerant cycle switches
back to the cooling cycle, the outdoor motor stops,
electric heaters are energized, and hot gas passing
through the outdoor coil melts any accumulated frost.
When the temperature rises to approximately 57°F, the
coil temperature sensor will send a signal to the heat
pump control which will return the system to heating
operations automatically.

If some abnormal or temporary condition such as a high
wind causes the heat pump to have a prolonged defrost
cycle, the heat pump control will restore the system to
heating operation automatically after 8 minutes.

The heat pump defrost control board has an option of
30, 60 or 90-minute setting. All models are shipped
from the factory on the 90-minute pin. If special
circumstances require a change to another time, remove
the wire from the 90-minute terminal and reconnect to
the desired terminal.

The manufacturer’s recommendation is for 90-minute
defrost cycles. Refer to Figure 14.

There is a cycle speed up jumper on the control. This
can be used for testing purposes to reduce the time
between defrost cycle operation without waiting for
time to elapse.

Use a small screwdriver or other metallic object, or
another ¼ inch QC, to short between the SPEEDUP
terminals to accelerate the HPC timer and initiate
defrost.

Be careful not to touch any other terminals with the
instrument used to short the SPEEDUP terminals. It
may take up to 15 seconds with the SPEEDUP terminals
shorted for the speedup to be completed and the defrost
cycle to start.

As soon as the defrost cycle kicks in remove the
shorting instrument from the SPEEDUP terminals.

Otherwise the timing will remain accelerated and run
through the 1-minute minimum defrost length sequence
in a matter of seconds and will automatically terminate
the defrost sequence.

There is an initiate defrost jumper (sen jump) on the
control that can be used at any outdoor ambient during
the heating cycle to simulate a 0° coil temperature.

This can be used to check defrost operation of the unit
without waiting for the outdoor ambient to fall into the
defrost region.

By placing a jumper across the SEN JMP terminals (a
¼ inch QC terminal works best) the defrost sensor
mounted on the outdoor coil is shunted out & will
activate the timing circuit. This permits the defrost cycle
to be checked out in warmer weather conditions without
the outdoor temperature having to fall into the defrost
region.

In order to terminate the defrost test the SEN JMP
jumper must be removed. If left in place too long, the

compressor could stop due to the high pressure condition
created by operating in the cooling mode with outdoor
fan off. Pressure will rise rapidly as there is likely

no actual frost on the outdoor coil in this articial test

condition.
There is also a 5-minute compressor time delay function

built into the Heat Pump Control to protect the compressor
from short cycling conditions. The board’s LED will have a
fast blink rate when in the compressor time delay function.
In some instances, it is helpful to the service technician to
override or speed up this timing period, and shorting out
the SPEEDUP terminals for a few seconds can do this.

FIGURE 14

HEAT PUMP CONTROL

DEFROST CYCLE

(FACTORY SETTING 90 MIN.)

Manual 2100-578E
Page 28 of 41

I-TEC COMMERCIAL ROOM

5.500

2.585 2.585 2.585 .745

NO. NO.
DATE

PART

NAME

DWG.

Bryan, Ohio

DISTRIBUTION 1 2 3 4 5

MAT'L

Bard Mfg. Co.

CHECKED

DRAWN BYSCALE

PART

APPROVED

DISCONNECT ALL ELECTRICAL

IN SEVERE INJURY OR AMPUTATION.

IN SEVERE INJURY OR AMPUTATION.

7961-754-2

C

LABEL SHEET #1

REQUIRE PROPER PHASING. REFER

DISCONNECT THE REMOTE

7961-754

3 PHASE SCROLL COMPRESSORS

EXPOSED MOVING PARTS.

FAILURE TO DO SO CAN RESULT

ELECTRICAL SHOCK CAN RESULT

IN SEVERE INJURY OR AMPUTATION.

POWER BEFORE SERVICING.

EXPOSED MOVING PARTS.

WARNING

IN SERIOUS INJURY OR DEATH.

DISCONNECT THE REMOTE

7961-754-1

DISCONNECT ALL ELECTRICAL

ELECTRICAL SHOCK CAN RESULT

ELECTRIC POWER SUPPLY OR

7961-754-1

WARNING

!

HAZARD OF ELECTRICAL SHOCK.

PROPER START UP INFORMATION.

IMPORTANT

SUPPLIES BEFORE SERVICING.

IN SERIOUS INJURY OR DEATH.

1:1

11/17/2011

7961-754-8

TO INSTALLATION INSTRUCTIONS FOR

Piece

Front Trim

EXPOSED MOVING PARTS.

SUPPLIES BEFORE SERVICING.

CGB

7961-754-2

WARNING

!

HAZARD OF ELECTRICAL SHOCK.

!

WARNING

DAY RSP

WARNING

!

!

WARNING

7961-754-2

7961-754-1

DISCONNECT ALL ELECTRICAL

7961-754-9

POWER BEFORE SERVICING.
FAILURE TO DO SO CAN RESULT

POWER BEFORE SERVICING.
FAILURE TO DO SO CAN RESULT

ELECTRIC POWER SUPPLY OR

VENTILATOR SYSTEM

GENERAL DESCRIPTION

The I-TEC Commercial Room Ventilator (CRV) is
designed to be used with all Bard I-TEC models. The
only intent of this device is to provide the required
ventilation by delivering fresh air to meet I.A.Q. (Indoor
Air Quality) requirements. In the installed application,
this system also includes exhaust provisions which
are balanced with the intake air to maintain building
pressurization requirements of ASHRAE 62.1 Standard.

Ventilation is accomplished with (2) blower/
motor assemblies for maximum ventilation at low
sound levels. The intake and exhaust blowers are
programmed independently and are balanced to
maintain a slight positive pressurization in accordance
to ASHRAE 62.1 Standard.

The I-TEC CRV is also provided with lters to reduce

the required service needed and to further improve the
I.A.Q. The exhaust air blowers and intake air blowers

are protected by two (2) throw away lters. Both are

accessible without the need for tools.

CONTROL WIRING

The I-TEC CRV comes wired from the factory set to
450 CFM of ventilation. Care must be taken when
deciding how to control the operation of the ventilator.
When designing the control circuit for the ventilator, the
following requirements must be met.

1.

The indoor blower must be run whenever the I-TEC

CRV is run.

2.

Select and congure the correct CFM ventilation

level that the I-TEC CRV needs to operate and

congure the system to this level following later

instructions within this section. Over ventilating

serves no useful purpose and signicantly affects
the overall efciency of the heat pump system.

System operating costs would also increase.

3. Run the I-TEC CRV only during periods when the
conditioned space is occupied. Running the
ventilation during unoccupied periods wastes
energy, decreases the expected life of the CRV,
and can result in large moisture buildup in the
structure. Running the CRV when the structure is
unoccupied allows moisture to build up in the
structure because there is little or no cooling load.

Thus, the air conditioner is not running enough to
remove the excess moisture being brought in. Use
a control system that in some way can control the
system based upon occupancy.

Operating the I-TEC CRV during unoccupied periods can
result in a build up of excess moisture in the structure.

RECOMMENDED CONTROL SEQUENCES

Several possible scenarios are listed below:

1. Use a programmable electronic thermostat with
auxiliary terminal to control the CRV based on
daily programmed occupance periods. Bard
markets and recommends Bard Part #8403-060
programmable electronic thermostat.

2.
temperature, humidity and occupancy control with
learning capability into a single device. No
programming required.

3.
upon a room occupancy schedule to control the CRV.

4.
lights in a room are usually on only when occupied.

5. Use a manual timer that the occupants turn to

energize the CRV for a specic number of hours.

6. Use a programmable mechanical timer to energize
the CRV and indoor blower during occupied
periods of the day.

NOTE: The ventilation package comes with a blower
interlock function, but is disabled when it is shipped from
the factory in case you do not utilize a thermostat with an
occupancy output, or a occupancy sensor and must tie “A”
terminal to “G” terminal to drive the ventilation package. If
you do have a thermostat or control that does drive occupancy
output, you will need to remove the tape from the orange wire
located in the low voltage terminal box, and connect it to the
“G” terminal to activate this function. (See Figures 11-13.)

SETTING THE VENTILATION CFM LEVELS

The I-TEC CRV has four pre-set levels of ventilation
CFM available. These are 300, 375, 450 and 525 CFM
of ventilation air. The I-TEC CRV is shipped from the
factory set on the 450 CFM ventilation level. To change
between these four different levels of provided ventilation

CFM, rst refer to Figure 15 to look up the corresponding

CFM needed for the intake and exhaust blowers to meet
the design criteria and determine which “speed/wire
color” is needed. Then, perform the following steps.

1.
front door latches).

2. Throw main power disconnect to the “OFF”
position to eliminate risk of injury or death due to
electrical shock.

3. Remove six (6) screws holding front CRV door in
place (See Figure 16).

4. Locate “Brown Wire with White Trace” that has
a black terminal on the end where it connects to
the terminal strip (See Figure 15).

5. Move “Brown Wire with White Trace” to the
corresponding CFM level needed in accordance
with Figure 15.

Use Bard CompleteStat™ that incorporates

Use a DDC control system to control the CRV based

Tie the operation of the CRV into the light switch. T he

!

HAZARD OF ELECTRICAL SHOCK.
ELECTRICAL SHOCK CAN RESULT
IN SERIOUS INJURY OR DEATH.
DISCONNECT THE REMOTE
ELECTRIC POWER SUPPLY OR
SUPPLIES BEFORE SERVICING.

Open front swinging doors of main unit (by popping

Manual 2100-578E
Page 29 of 41

FIGURE 15

MED. HI

7961-7554

MOTOR SPEEDS

LO

MED. LO

HI

BLACK

SPEED

BLUE

MED-LO

VENT OPTION INTAKE/EXHAUST SPEEDS

7961-755-2

RED

HI

MED-HIBLUE

ORANGE

NOM. CFM

BLACK

WIRE COLOR

LO

ORANGE

RED

WIRE WITH WHITE TRACE.

300

375

450

525

TO CHANGE SPEEDS, MOVE BROWN

BROWN/WHITE

Move brown/white wire to corresponding motor
speed for required ventilation CFM. Factory
setting is Medium Hi (450 CFM).

MIS-3206

CRV MOTOR SPEED/CFM CONFIGURATION

Manual 2100-578E
Page 30 of 41

FIGURE 16

BLOWER SPEED

CONTROL LOCATION

BLOWER
SPEED
CONTROL

BLOWER REMOVED
FOR CLARITY

CRV DOOR TO ACCESS CRV
COMPONENTS

REMOVE (9) SCREWS FROM

MIS-3207 A

CRV INTAKE BLOWER
NOTE: CRV EXHAUST
BLOWER IS BEHIND
INTAKE BLOWER

CRV SPEED CHANGE TERMINAL ACCESS

Manual 2100-578E
Page 31 of 41

Indoor Air

VENT
EXHAUST

Supply Air

Outdoor Air

BLOWER

BLOWER

INTAKE

VENT

SUPPLY
BLOWER

Return Air

MIS-3208

FIGURE 17

VENTILATION AIRFLOW DIAGRAM

Manual 2100-578E
Page 32 of 41

ANNUAL MAINTENANCE

1. Inspect and conduct the same procedures as
outlined under Quarterly Maintenance.

2. To maintain peak latent (moisture) removal
capacity, it is recommended that the energy
recovery wheels be sprayed with a diluted nonacid
based evaporator coil cleaner or alkaline detergent
solution such as 409.

NOTE: Do not use acid based cleaners, aromatic

solvents, temperatures in excess of 170° F or
steam. Damage to the wheel may result.

Do not disassemble and immerse the entire

heat wheel in a soaking solution, as bearing
and other damage may result.

3. Rinse wheel thoroughly after application of the
cleaning solution, and allow to drain before
reinstalling.

4. No re-lubrication is required to heat wheel bearings
of the drive motor, or to the intake and exhaust
blower motors.

5. If any belt chirping or squealing noise is present,
apply a small amount of LPS-1 or equivalent dry

lm lubricant to the belt.

Manual 2100-578E
Page 33 of 41

TROUBLESHOOTING

SOLID STATE HEAT PUMP CONTROL
TROUBLESHOOTING PROCEDURE

1. NOTE: A thorough understanding of the defrost
cycle sequence is essential. Review that section
earlier in this manual prior to troubleshooting the
control. Turn on AC power supply to unit.

2. Turn thermostat blower switch to “fan on” – the
indoor blower should start. (If it doesn’t,
troubleshoot indoor unit and correct problem.)

3. Turn thermostat blower to “auto” position. Indoor
blower should stop.

4. Set system switch to “heat” or “cool”. Adjust
thermostat to call for heat or cool. The indoor
blower, compressor and outdoor fan should start.

NOTE: If there was no power to 24 volt transformer,
the compressor and outdoor fan motor will
not start for 5 minutes. This is because of
the compressor short cycle protection.

CODES FUNCTION

Slow Blink Normal Operation

Fast Blink Compressor Time Delay

1 Blink Low Pressure Switch Failure

2 Blink High Pressure Switch Failure

  orCondensateOverow 

Switch Activated

3 Blink Defrost Mode Active

 4Blink HighPressureorOverow

Switch Lockout

TABLE 5 — TROUBLESHOOTING

Symptom Description, Check & Possible Causes What & How to Check / Repair

Compressor will
not start (heating or
cooling)

Fan outdoor motor
does not run
(cooling or heating
except during
defrost)

Reversing valve
does not energize
(heating only)

Unit will not go into
defrost
(heating only)

Unit will not come
out of defrost
(heating only)

1. Check for LED illumination.

IsthereanLEDilluminatedontheboard(ashing)?

2. Check for error codes.

IstheLEDashingaCode?

3. Check for power at board.

Isthere24voltsACbetweenRandC?

4. Check codes.

Whatcodeisblinking?

5. Compressor delay active.

Wait for 5 minute delay or jump board's "speed up pins".

6. Low pressure fault. Check wiring circuit and unit pressures.

7A. High pressure fault. Check wiring circuit and unit pressures.

7B. Condensate overow fault.

8. Check for Compressor input signal.

Isthere24voltsACbetweenYandC?

9. No power to board.

10. Check for Compressor output signal.

Isthere24voltsACbetweenCC&C?

11. No "Y" compressor input signal.

12. No "CC" compressor output signal.

13. Faulty board. Replace defrost board.

Heat pump control defective

Motor defective Check for open or shorted motor winding. Replace motor.

Motor capacitor defective

Heat pump control defective

Reversing valve solenoid coil defective Check for open or shorted coil. Replace solenoid coil.

Temperature sensor or heat pump control defective

Temperature sensor or heat pump control defective.

Yes = go to Step #2; No = go to Step #3

Yes = go to Step #4; No = go to Step #8

Yes = go to Step #13; No = go to Step #9

Code "1", go to Step #6; Code "2", go to Steps #7A & #7B; Fast Blink,
go to Step #5

Check for proper operation; if still needed, go back to Step #1.

Check upper indoor coil drains; check lower outdoor coil drains; check
main drain line.

Yes = go to Step #10; No = go to Step #11

The unit either does not have unit voltage, the transformer is bad or the
unit wiring is incorrect.

Yes = go to Step #12; No = go to Step #13

Check thermostat wiring, incorrect phase of unit (see section on Phase

Monitor),andnallyunitwiring.

Checkcompressorcontactorforproperoperationandnallycheck

compressor.

Check across fan relay on heat pump control. (Com-NC) Replace heat
pump control.

Check capacitor rating. Check for open or shorted capacitor. Replace
capacitor.

Check for 24V between RV-C and B-C.

1. Check control circuit wiring.

2. Replace heat pump control

Disconnect temperature sensor from board and jumper across
"SPEEDUP" terminals and "SEN JMP" terminals. This should cause the
unit to go through a defrost cycle within one minute.

1. If unit goes through defrost cycle, replace temperature sensor.

2. If unit does not go through defrost cycle, replace heat pump control.

Jumper across "SPEEDUP" terminal.
This should cause the unit to come out of defrost within one minute.

1. If unit comes out of defrost cycle, replace temperature sensor.

2. If unit does not come out of defrost cycle, replace heat pump control.

Manual 2100-578E
Page 34 of 41

CHECKING TEMPERATURE SENSOR

1. Disconnect temperature sensor from board and
from right-hand outdoor coil.

2. Use an ohmmeter and measure the resistance of the
sensor. Also use ohmmeter to check for short or
open.

3. Check resistance reading to chart of resistance use
sensor ambient temperature. (Tolerance of part is ±
10%.)

TABLE 6

TEMPERATURE (F) VS RESISTANCE (R) OF TEMPERATURE SENSOR

F R F R F R F R

-25 196871 13 56985 51 19374 89 7507

-24 190099 14 55284 52 18867 90 7334

-23 183585 15 53640 53 18375 91 7165

-22 177318 16 52051 54 17989 92 7000

-21 171289 17 50514 55 17434 93 6840

-20 165487 18 49028 56 16984 94 6683

-19 159904 19 47590 57 16547 95 6531

-18 154529 20 46200 58 16122 96 6383

-17 149355 21 44855 59 15710 97 6239

-16 144374 22 43554 60 15310 98 6098

-15 139576 23 42295 61 14921 99 5961

-14 134956 24 41077 62 14544 100 5827

-13 130506 25 39898 63 14177 101 5697

-12 126219 26 38757 64 13820 102 5570

-11 122089 27 37652 65 13474 103 5446

-10 118108 28 36583 66 13137 104 5326

-9 114272 29 35548 67 12810 105 5208

-8 110575 30 34545 68 12492 106 5094

-7 107010 31 33574 69 12183 107 4982

-6 103574 32 32634 70 11883 108 4873

-5 100260 33 31723 71 11591 109 4767

-4 97064 34 30840 72 11307 11 0 4663

-3 93981 35 29986 73 11031 111 4562

-2 91008 36 29157 74 10762 112 4464

-1 88139 37 28355 75 10501 113 4367

0 85371 38 27577 76 10247 114 4274

1 82699 39 26823 77 10000 115 4182

2 80121 40 26092 78 9760 11 6 4093

3 77632 41 25383 79 9526 11 7 4006

4 75230 42 24696 80 9299 11 8 3921

5 72910 43 24030 81 9077 11 9 3838

6 70670 44 23384 82 8862 120 3757

7 68507 45 22758 83 8653 121 3678

8 66418 46 22150 84 8449 122 3601

9 64399 47 21561 85 8250 123 3526

10 62449 48 20989 86 8057 124 3452

11 60565 49 20435 87 7869

12 58745 50 19896 88 7686

4. If sensor resistance reads very low, then sensor is

shorted and will not allow proper operation of the
heat pump control.

5. If sensor is out of tolerance, shorted, open, or reads

very low ohms then it should be replaced.

Manual 2100-578E
Page 35 of 41

TROUBLESHOOTING ECM™ 142R OUTDOOR FAN MOTOR

2.585

.833 .833

3.706

4.250

5.500

7961-755-3

7961-755-3

DISCONNECT ALL ELECTRICAL

IN SEVERE INJURY OR AMPUTATION.

EXPOSED MOVING PARTS.

WARNING

POWER BEFORE SERVICING.

THIS DOOR

INTAKE VENT FILTER BEHIND

THIS DOOR

!

SUPPLIES BEFORE SERVICING.

!

WARNING

7961-755-1

FAILURE TO DO SO CAN RESULT

IN SERIOUS INJURY OR DEATH.
DISCONNECT THE REMOTE
ELECTRIC POWER SUPPLY OR

HAZARD OF ELECTRICAL SHOCK.
ELECTRICAL SHOCK CAN RESULT

INTAKE VENT FILTER BEHIND

Do not operate motor without fan blade
attached. Such operations will cause the
motor to oscillate up and down.

You must obtain the correct replacement
motor from the manufacturer that is a direct
replacement for the failed motor.

USING THE WRONG MOTOR VOIDS
ALL WARRANTIES AND MAY PRODUCE
UNEXPECTED RESULTS.

1. In normal operation, this motor may rock back and
forth on start up. Do not replace if this is the only

symptom identied.

2. If the system is operating properly, but the motor
appears to run slower than it should, the motor is

good. High efciency systems with optimized fan

blades are engineered to run slow to decrease
noise. The Bard I-TEC Series models also adjust
fan speed based upon varied outdoor ambient

conditions to optimize sound and unit efciency.

3. If the system is noisy, freezing up, running a high
head pressure, tripping the high pressure switch or
compressor overload, check the following:

a. Ensure cleanliness of condenser coil(s) and

fan blade/shroud.

b. Conrm the fan blade is not bent or deformed,

isn’t rubbing on the shroud, and that it is tight
on the motor shaft. Also ensure the motor is
secure in its mounting system, and the
mounting system is secure to the unit.

c. The Bard I-TEC is equipped with a low
ambient control pressure switch. This pressure
switch completes the 24VAC Common feed to
the outdoor fan motor control in cooling mode.
If this switch is defective, or if the outdoor air
temperature is too cold to raise the head pressure
to the 325# switch closing set-point, or the
system charge is too low, this could be the cause

Manual 2100-578E
Page 36 of 41

of the issue. (In heat pump {heating} mode, the
low ambient fan cycling control is bypassed.)

d. If motor is not running, go to next section.

4. If the motor does not appear to be running at the
proper speed or does not shut off, refer to the next
section for voltage checks to determine if the motor
is getting the proper input signals.

If the motor IS NOT receiving any communication,
troubleshoot the communication issue using the
diagnostic table for the Fan Logic Control.

a. This motor uses a 7 wire harness to control

the motor.

• Line power is connected as follows:

“Red Wire” connects to “L1”
“Black Wire” connects to “L2”
“Green/Yellow Wire” connects to “Ground”

• Control power is connected as follows:

“Blue Wire” connects to Fan Relay of the
Defrost Logic Control, and subsequently
connects to 24VAC Common through the
Fan Logic Control Board. “Yellow Wire”
connects to “Y” on the Fan Logic Control
Board. “White Wire” connects to “W” on
the Fan Logic Control Board. “Orange

NOTE: A combination of the “Yellow”, “White”
and “Orange” wires being energized (with

24V “R” signal) determines ve (5) different

Wire” connects to “O” on the Fan Logic
Control Board.

speeds the fan motor will operate at. The
Fan Logic Control Board uses an outdoor
thermistor sensor to determine the speed the

TABLE 7

TROUBLESHOOTING ECM™ 142R OUTDOOR FAN MOTOR

fan should operate. It also utilizes the “B”
reversing valve input for heat pump mode to
determine speed should operate.

Check Line Power to Motor

Check for 24VAC common signal to motor
(against Transformer "R" Signal)

Check 24VAC "hot" outputs (to "Blue" on Fan Logic Control) to motor. See the following tables based upon outdoor temperature and model
of operation.

TROUBLESHOOTING FAN LOGIC
CONTROL

Please reference the Thermistor Temperature/Resistance
Chart in this manual (Table 6).

• GREEN STATUS LED – Blinks indicating there

is a call for fan operation (simultaneous to call for
compressor operation) and is normal.

• RED STATUS LIGHT (LA) – Is illuminated when

low ambient control switch is in the closed position.
(NOTE: This is not required in heat pump operation
as the low ambient switch is bypassed in this mode
of operation.)

• YELLOW STATUS LIGHT (B) – Is illuminated

when there is a reversing valve call (for heat pump

Check between Red and Black Wires for Line Power

Verify Ground by checking Green Wire to L1 and L2 Line Power

Check "BR" terminal of Fan Logic Control Board

Check "Blue" Fan Lead on "Fan Relay Terminal" of "Defrost Logic Control"

** Is not energized in cooling mode until Low Ambient Fan Cycling Control is closed by 325
PSIG refrigerant pressure.

** Circuit is completed automatically when "B" is energized on the Fan Logic Control Board

operation). (NOTE: As mentioned above, this mode
of operation negates the low ambient fan cycling
control.)

If the board is reading a fan temperature thermistor
value of 3375Ω or less (equivalent to 125°F or an "open"
sensor), the fan will operate at the highest speed setting
(energizes "W" and "Y" outputs on the board).

If the board is reading a fan temperature value of
118,110Ω or greater (equivalent to -10°F or a "shorted"
sensor), the fan will operate at the highest speed setting
(energizes "W" and "Y" outputs on the board).

If the low ambient switch is open, the red light will not
be illuminated and the "BR" terminal will show open.
The "BR" terminal is the "24 volt common" switching
output to the outdoor fan motor.

TABLE 8

COOLING MODE

O.D. Temp Sensor 24VAC Signals Between

Below 55°F Orange to Blue

Between 56° - 69°F White to Blue

Between 70° - 85°F Yellow to Blue

Between 86° - 112°F Orange and White to Blue

Above 112°F White and Yellow to Blue

O.D. Temp Sensor 24VAC Signals Between

Above 56°F Orange to Blue

Between 55° - 30°F White to Blue

Between 29° - 14°F Yellow to Blue

Below 13°F Orange and White to Blue

TABLE 9

HEAT PUMP MODE

If the output signals are not matching the specied temperature range, then go to Table #6 and verify the thermistor output

curve. If the motor is receiving proper communications and proper high voltage power, and is still not running, proceed
with Motor Replacement. (When checking the resistance/temperature curve, don’t forget about the optional 2.2k ohm fan
control resistor assembly.)

REPLACING THE MOTOR

This motor is replaced in one piece. The control cannot
be replaced separately from the motor. Even if the
control is remotely located, the replacement part will be
a new control with harness and new motor.

You must have the correct replacement motor from the
manufacturer that is a direct replacement for the failed
motor.

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

Always mount the replacement motor and control

according to the manufacturers specications using

all required hardware to reduce vibration. Make sure
all wires are free of the fan blade and not pinched in
mountings or cabinet through points.

Manual 2100-578E
Page 37 of 41

TROUBLESHOOTING INDOOR ECM™ BLOWER 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

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

• 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?

Manual 2100-578E
Page 38 of 41

TROUBLESHOOTING INDOOR ECM™ BLOWER 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 unit 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 not necessary to remove the motor from the blower assembly, nor
the blower assembly from the unit. Unplug the two cable connectors to the
motor control assembly. There are latches on each connector. DO NOT
PULL ON THE WIRES. The plugs remove easily when properly released.

4. Locate the screws that retain to t
metal of the unit and remove them. Remove two (2) nuts that retain
the control to the bracket and then remove two (2) nuts that retain sheet
metal motor control end plate. Refer to Figure 18.

5. Disconnect the three (3) wires interior of the motor control by using

your thumb and forenger squeezing the latch tab and the opposite side

of the connector plug, gently pulling the connector. DO NOT PULL ON
THE WIRES, GRIP THE PLUG ONLY. Refer to Figure 18.

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 19. (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.

he motor control bracket to the sheet

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.

8. Reverse the steps #5, 4, 3 to reconnect the motor control to the

motor wires, securing the motor control cover plate, mounting the
control to the bracket, and mounting the motor control bracket back
into the unit. 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. DO NOT

OVERTIGHTEN THE BOLTS.

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

Make sure the connector is properly seated and latched.

10. 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.

Final installation check. Make sure the motor is installed as follows:

11.

a. Motor connectors should be oriented between the 4 o’clock
and 8 o’clock positions when the control is positioned in its

nal location and orientation.

b. Add a drip loop to the cables so that water cannot enter the
motor by draining down the cables. Refer to Figure 20.

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.

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 18 Figure 19

Figure 3

Control Disassembly

Push until
Latch Seats
Over Ramp

ECM

2.3/2.5

Hex-head Screws

From Motor

Circuit

Board

Motor

Motor Connector
(3-pin)

Control Connector
(16-pin)

Power Connector
(5-pin)

Motor Connector
(3-pin)

Back of
Control

Figure 4

Winding Test

Motor OK when
R > 100k ohm

Figure 20

Figure 5

Drip Loop

Connector Orientation

Between 4 and 8 o'clock

Drip Loop

Manual 2100-578E
Page 39 of 41

10

1 2 3 4 5 6 7 8

1615141312119

3 51 2 4

MIS-2839

TROUBLESHOOTING ECM™ BLOWER MOTORS (Cont’d.)

MODE of

OPERATION

Thermostat

24 VAC

Inuput Signals

Pin #1 24 VAC "C" (Common) Signal, Always Energized

Pin #2 X

Pin #3 24 VAC "C" (Common) Signal, Always Energized

Pin #4 Not Used

Pin #5 Not Used

Pin #6 X X X X X X X

Pin #7 Not Used

Pin #8 Not Used

Pin #9 X X X

Pin #10 Not Used

Pin #11 Not Used

Pin #12 24 VAC Hot "R" Signal, Always Energized

Pin #13 X X

Pin #14 X X X X X

Pin #15 X X X X X X X X X

Pin #16 Not Used

Continuous

OFF

— "G"

Blower

(Ventilation

Mode)

Part Load

Cooling

"G",

"Y1","Y2"

Full Load

Cooling

"G",

"Y1","Y2"

Dehum.

Mode

(when

equipped)

"D"

Part
Load
Heat

Pump

"G", "B",

"Y1"

Full

Load

Heat

Pump

"G", "B",

"Y1", "Y2"

Heat Pump

Full Load w/

1st Bank of

Elec. Heat

"G", "Y1",
"Y2", "B",

"W1"

Heat Pump

Full Load w/

1st & 2nd Bank

of Elec. Heat

"G", "Y1",
"Y2", "B",

"W2", "W3"

Emergency

Heat Mode

"G",

"W2", "W3"

FIGURE 21 — CONTROL CONNECTOR MOTOR HALF

POWER CONNECTOR

MOTOR HALF

FAN BLADE SETTING DIMENSIONS

The position of the fan blade should be ush with the
leaving face of the orice plate. Check to make sure

the blades do not extend beyond the rear casing of the
unit. Spin the blade by hand to make sure it does not
hit the ring.

POWER CONNECTOR

PWB HEADER AMP 1-350945-0

PIN Description

1

2

3 Chassis Ground

4 AC Line

5 AC Line

*

Suggested mating connector

Jumper Pin 1 to Pin 2 for 120VAC
Line Input Only **

Housing — AMP 350809-1
Contact — AMP 350537-1

** WARNING — Applying 240VAC line input with
PIN 1 to PIN 2 jumper in place will permanently
damage unit!

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 (Tables 10A & 10B and 11A & 11B) show
nominal pressures and temperatures 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.

Manual 2100-578E
Page 40 of 41

Model

I36Z1

I48Z1

I60Z1

Model

I36Z1

I48Z1

I60Z1

TABLE 10A — FULL LOAD COOLING PRESSURE/TEMPERATURE

Return Air

Temp. Pressure 55° 60° 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° 120° 125°

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

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

126
209

137
219

154
217

118
221

132
223

140
234

123
218

137
219

146
231

127
231

139
239

155
240

121
239

134
242

144
253

124
241

137
244

147
255

129
252

141
260

157
262

124
257

137
261

147
271

124
265

138
269

148
279

130
274

142
280

158
285

126
275

139
280

151
289

125
289

138
294

150
303

131
295

144
300

159
307

129
293

141
299

154
307

126
312

139
319

151
327

132
317

148
314

160
330

131
311

141
348

158
326

127
336

140
341

153
352

134
338

149
341

162
352

134
329

144
373

161
344

128
360

140
375

154
376

135
360

150
359

163
375

136
347

148
366

165
362

129
383

141
392

156
400

136
381

151
381

164
397

139
365

151
375

168
380

129
407

141
418

157
424

137
407

152
407

165
424

140
397

152
408

170
414

131
431

143
443

159
450

138
433

153
433

166
451

141
430

154
442

171
448

132
456

144
469

161
475

139
458

154
458

167
477

142
462

155
475

173
482

134
481

146
494

162
501

140
484

155
484

168
504

143
494

156
508

174
515

135
505

147
519

164
527

141
510

156
510

169
531

144
527

157
541

175
549

136
530

149
544

166
552

TABLE 10B — FULL LOAD HEATING PRESSURE/TEMPERATURE

Return Air

Temp. Pressure 0° 5° 10° 15° 20° 25° 30° 35° 40° 45° 50° 55° 60° 65° 70°

70° DB

70° DB

70° DB

Low Side

High Side383174531951320573226332470326763278232992356

Low Side

High Side33268402764728554293603016730974318813268933497342

Low Side

High Side38285422894629350297543015830563309673138033594357

101
382

107
388

106
349

100
365

114
395

114
356

107
372

120
401

122
363

114
380

127
408

130
370

120
387

141
536

157
535

171
540

145
559

159
575

177
583

138
554

150
570

167
578

133
414

138
377

127
395

Model

I36Z1

I48Z1

I60Z1

Model

I36Z1

I48Z1

I60Z1

TABLE 11A

PART LOAD COOLING PRESSURE/TEMPERATURE

Return Air

Temp. Pressure 55° 60° 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° 120° 125°

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

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

131
188

145
192

158
198

126
172

137
171

150
177

127
196

138
196

152
203

133
209

146
213

159
219

127
196

139
197

152
203

127
218

139
219

153
226

134
230

148
234

161
240

129
221

141
222

154
229

128
240

140
242

153
249

136
250

149
254

162
260

130
245

142
248

156
254

128
261

141
265

154
271

137
271

150
275

163
281

131
269

144
274

158
280

129
283

142
288

155
294

139
292

154
292

164
302

133
294

147
312

160
305

130
305

143
316

156
317

140
313

154
320

166
323

134
318

148
346

162
331

130
326

144
347

157
340

142
333

155
336

167
343

135
343

150
355

164
357

131
348

144
359

158
363

143
354

155
358

168
364

137
367

151
377

166
382

131
370

145
380

159
385

144
379

156
383

169
389

138
390

152
401

167
407

133
394

147
405

161
411

145
403

158
408

171
415

139
414

154
426

168
431

134
418

149
430

163
436

146
428

159
433

172
440

140
438

155
450

170
456

136
443

150
455

165
461

148
453

160
458

173
466

141
461

156
474

171
481

138
467

152
480

167
487

149
478

161
483

175
491

142
485

157
498

173
505

139
491

154
505

169
512

TABLE 11B

PART LOAD HEATING PRESSURE/TEMPERATURE

Return Air

Temp. Pressure 0° 5° 10° 15° 20° 25° 30° 35° 40° 45° 50° 55° 60° 65° 70°

70° DB

70° DB

70° DB

Low Side

High Side452705127257274632766927875280812828728494300

Low Side

High Side332614226750272582786628475290832959130197311

Low Side

High Side372614427052280592896729974308823188932797339

100
315

103
320

104
350

110
321

113
330

111
359

119
326

122
340

119
368

129
332

132
350

126
378

138
337

141
360

134
387

150
502

163
508

176
517

144
508

159
523

174
530

141
515

156
530

171
537

148
343

151
370

141
396

Air Temperature Entering Outdoor Coil °F

Manual 2100-578E
Page 41 of 41