Bard W30AAPC, W24AAPA, W36AAPA, W36AAPB, W36AAPC Installation Instructions Manual

INSTALLATION INSTRUCTIONS

MULTI-TEC®/th-TUNE

Free Cooling Unit System

MULTI-TEC® Wall-Mount Air Conditioner

Models:

W18AAPA
W24AAPA
W24AAPB
W24AAPC
W30AAPA
W30AAPB
W30AAPC
W36AAPA
W36AAPB
W36AAPC

W42AAPA
W42AAPB
W42AAPC
W48AAPA
W48AAPB
W48AAPC
W48AAPQ
W60AAPA
W60AAPB
W60AAPC
W60AAPQ

W72AAPA
W72AAPB
W72AAPC
W72AAPQ

W18LAPA
W24LAPA
W24LAPB
W30LAPA
W30LAPB
W30LAPC
W36LAPA
W36LAPB
W36LAPC
W42LAPA
W42LAPB
W42LAPC

W48LAPA
W48LAPB
W48LAPC
W48LAPQ
W60LAPA
W60LAPB
W60LAPC
W60LAPQ
W72LAPA
W72LAPB
W72LAPC
W72LAPQ

th-Tune Single Unit Controller

NOTE: The th-Tune can be used as a replacement for the LC6000

controller for operation when a single W***AP* unit is used.

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

www.bardhvac.com

Manual: 2100-678
Supersedes: NEW
Date: 9-20-17

Page 1 of 24

CONTENTS

General Information ...........................................3

List of Necessary Materials/Tools ....................5

Wall-Mount Unit Site Preparation ....................6

Model Identification .......................................... 6

New Shelter Installation vs. Retrofit Installation .. 6

Minimum Clearance .......................................... 6

Clearance to Combustibles ................................ 6

Wall-Mount Unit Installation ............................8

Mounting the Unit ............................................ 8

Wall-Mount Unit Supply Wiring ...................... 16

Main Power Wiring .......................................... 16

Low Voltage Wiring ......................................... 16

Wall-Mount Unit Preliminary Start Up ..........19

Running in Stand Alone (Orphan) Mode ............ 19

th-Tune Controller Installation ......................20

Mounting th-Tune Controller to Wall ................. 20

Power and Communication Wiring .................... 20

Power Wiring ........................................... 20

Communications Wiring ............................ 21

th-Tune Operation ........................................... 22

On/Off ..................................................... 22

Heat/Cool Operation ................................. 22

Auto Mode......................................... 22

Heat Mode ........................................ 22

Cool Mode ......................................... 22

Staging of Free Cooling and

Mechanical Cooling ............................ 22

Changing the Setpoint .............................. 22

Changing the Clock .................................. 23

Blower Operation ...................................... 23

th-Tune Setup Options Using the TEC-EYE . 23

Comfort Range ................................... 23

Alarms and Troubleshooting....................... 23

Alarms .............................................. 23

Troubleshooting ................................. 23

FIGURES AND TABLES

Figure 1 MULTI-TEC Model Nomenclature .............5

Figure 2 Dimensions ............................................ 7

Figure 3 Outdoor Sensor Installation
Figure 4A W18A, W18L, W24A, W24L
Mounting Instructions
Figure 4B W30A, W30L, W36A, W36L
Mounting Instructions
Figure 4C W42A, W42L, W48A, W48L
Mounting Instructions
Figure 4D W60A, W60L, W72A, W72L
Mounting Instructions

Figure 5 Electric Heat Clearance ......................... 13

Figure 6 Wall Mounting Instructions .................... 13

Figure 7 Wall Mounting Instructions .................... 14

Figure 8 Common Wall Mounting Installations ...... 15

Figure 9 Circuit Routing Label ............................ 16

Figure 10 WIRING: VAC Supply Wiring

Landing Points .....................................16

Figure 15 th-Tune Power and Communication

Connections .........................................21

Figure 16 Wall Unit and th-Tune Power and

Communications Connections ................21

Figure 17 Proper Communication Connector

Placement ...........................................21

Figure 18 Change Setpoint ...................................22

Figure 19 Comfort Range .....................................22

Figure 20 MULTI-TEC Status Screen ..................... 23

Figure 21 Comfort Range Setup ............................23

Figure 22 th-Tune Buttons Overview ...................... 24

Figure 23 th-Tune Icons Overview .........................24

Table 1 Electrical Specifications –

W**AAP Series .....................................17

Table 2 Electrical Specifications –

W**LAP Series .....................................18

......................

..............................

............................

............................

............................

8

9

10

11

12

Manual 2100-678
Page 2 of 24

GENERAL INFORMATION

Free Cooling Unit System

This Bard Free Cooling Unit System is composed of
MULTI-TEC wall-mounted air conditioners matched
with an LC6000 lead/lag controller or Bard th-Tune
single unit controller. If only one wall-mounted air
conditioner is being used, it can be matched with
either the LC6000 lead/lag controller or a th-Tune
single unit controller. If more than one wall mount
is installed, the LC6000 lead/lag controller must be
matched with the air conditioning units. The wall
mounts are specifically engineered for telecom/motor
control center rooms.

NOTE: The LC6000 lead/lag controller (or th-Tune

single unit controller) and MULTI-TEC wall­mount units are designed specifically to work
together. These controllers cannot run other
Bard models or other brands of systems, nor
can other controllers run the MULTI-TEC wall­mount units. They are a complete system, and
must be used together.

Wall-Mount Air Conditioner Units

The

MULTI-TEC
units will supply 100% of rated cooling airflow in free
cooling mode with ability to exhaust the same amount
through the unit itself without any additional relief
openings in the shelter.

Each of these units are fully charged with refrigerant
and may have optional auxiliary heat.

units operate on VAC power.

The

Controller

A th-Tune single unit controller (Bard P/N 8403-

088) can be used in place of the LC6000 controller
when only one MULTI-TEC wall-mount air conditioner
is being controlled. If using a th-Tune stand-alone
controller instead of the LC6000 controller, the alarm
logging and remote communication capabilities of
the LC6000 controller will not be available. A TEC-

TM

hand-held diagnostic tool is required to program

EYE
the wall-mount unit for th-Tune single unit controller
operation. The th-Tune controller and TEC-EYE

diagnostic tool are available as a kit (Bard P/N 8620-

264).

General

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

The refrigerant system is completely assembled and
charged. All internal wiring is complete.

The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.

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

These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly 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 Additional Publications below for
information on codes and standards.

Sizing of systems for proposed installation should be
based on heat loss and heat gain calculations made
according to methods of Air Conditioning Contractors of
America (ACCA). The supply flange should be installed
in accordance with the Standards of the National

Fire Protection Association for the Installation of Air
Conditioning and Ventilating 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.

Shipping Damage

Upon receipt of equipment, the cartons should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.

These units must remain in upright position at all
times.

Additional Publications

These publications can help when installing the
furnace. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.

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

Standard for the Installation of Air Conditioning

and Ventilating Systems ...................ANSI/NFPA 90A

Standard for Warm Air Heating

and Air Conditioning Systems ............ANSI/NFPA 90B

Load Calculation for Residential Winter

and Summer Air Conditioning ............. ACCA Manual J

For more information, contact these publishers:

Air Conditioning Contractors of America (ACCA)
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: [phone] Fax: [phone]

Manual 2100-678
Page 3 of 24

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

American Society of Heating, Refrigeration and Air
Conditioning Engineers, Inc. (ASHRAE)

1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: [phone] Fax: [phone]

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

ANSI Z535.5 Definitions:

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.

!

WARNING

Electric shock hazard.

Have a properly trained individual perform
these tasks.

Failure to do so could result in electric shock
or death.

!

WARNING

Fire hazard.

Maintain minimum 1/4" clearance between the

supply ange and combustible materials.

Failure to do so could result in re causing
damage, injury or death.

!

WARNING

Heavy item hazard.

Use more than one person to handle unit.

Failure to do so could result in unit damage or
serious injury.

!

CAUTION

Cut hazard.

Wear gloves to avoid contact with sharp
edges.

Failure to do so could result in personal injury.

Manual 2100-678
Page 4 of 24

LIST OF NECESSARY MATERIALS/TOOLS

Additional hardware and miscellaneous supplies are needed for installation. These items are field supplied and must
be sourced before installation. This list also includes tools needed for installation.

LIST OF MATERIALS/TOOLS

• Personal protective equipment/safety devices/anti-

static wrist straps

• Supply and return grilles

• Field-fabricated sleeves (if necessary)

• Fasteners sufficient for mounting the units such as

5/16” diameter anchor/lag bolts

• 7/8” diameter washers

• Fasteners appropriate for the shelter wall

construction to attach the controller to the wall

• Commercial grade outdoor silicone sealant

• Miscellaneous hand and power tools and jobsite or

shop materials

• Lifting equipment with the necessary capacity and

rigging to safely move/install the systems

• Electrical supplies

- Various size circuit breakers for the shelter AC
breaker box (see Tables 1 and 2 on pages 17
and 18)

- High-voltage wire of various gauges
(see Tables 1 and 2)

- Communication wire: 3-wire, 20 gauge
shielded cable

- Miscellaneous electrical supplies including
rigid/flexible conduit and fittings, junction
boxes, wire connectors and supports

MODEL SERIES

18 – 1½ Ton

24 – 2 Ton

30 – 2½ Ton

36 – 3 Ton

FIGURE 1

MULTI-TEC Wall-Mount Unit Model Nomenclature

W 36 A A P A 10 5 X X X X E

CAPACITY

42 – 3½ Ton

48 – 4 Ton
60 – 5 Ton
72 – 6 Ton

A – Right Hand

L – Left Hand

A – 230/208/60/1
B – 230/208/60/3
C – 460/60/3
D – 240/220/50/1

REVISION

P – PLC Logic Board

VOLTS & PHASE

E – 240/220/50/3
or 220/200/50/3
F – 415/380/50/3
Q – 575/60/3

KW

FILTER OPTIONS

X – 1" Throwaway (Standard)
W – 1" Washable
P – 2" Pleated (MERV 8)

VENTILATION OPTIONS

B – Blank-off Plate
5 – Economizer: Default Enthalpy Convert to DB Only

COLOR OPTIONS

X – Beige (Standard)
1 – White
4 – Buckeye Gray

COIL OPTIONS

X – Standard
1 – Phenolic Coated Evaporator
2 – Phenolic Coated Condenser
3 – Phenolic Coated Evaporator
and Condenser

SUPPLY AIR OUTLET

X – Front (Standard)

CONTROL MODULES

E – LAC
C – LAC & CCH

Manual 2100-678
Page 5 of 24

WALL-MOUNT UNIT SITE PREPARATION

Model Identification

Identify the specific model using the model
nomenclature information found in Figure 1 and the
model/serial tag found on the unit on the opposite side
of the control and access panels. See Figure 2 on page

8 for dimensions and critical installation requirements.

New Shelter Installation vs. Retrofit
Installation

These installation instructions cover both new shelter
installations and retrofit installations. Each installation
is unique and may require special accomodations and
modifications. Although Bard Manufacturing follows a
long-established tradition of manufacturing equipment
using industry standard dimensions for building
penetration, it is occasionally necessary to move or
enlarge supply and return openings when replacing
non-standardized equipment in a retrofit application.

Minimum Clearance

Wall-mount air conditioners are available in both right­hand access models and left-hand access models.
Right-hand access models have the heat strip access
panel, external circuit breakers access panel and
internal controls access panel on the right side of the
unit. Left-hand access models are a mirror image of the
right-hand access models, and allow two wall-mount
units to be placed in relatively close proximity and yet
still allow complete access for maintenance and repair.

On side-by-side installations, maintain a minimum of
20" clearance on control side to allow access to control
panel and heat strips, and to allow proper airflow to the
outdoor coil. For installations where units are installed
with both control panels facing each other (inward),
maintain a minimum of 36" clearance to allow access.
Additional clearance may be required to meet local or
national codes.

Care should be taken to ensure that the recirculation
and obstruction of condenser discharge air does not
occur. Recirculation of condenser discharge air can
be from either a single unit or multiple units. Any
object such as shrubbery, a building or a large object
can cause obstructions to the condenser discharge air.
Recirculation or reduced airflow caused by obstructions
will result in reduced capacity, possible unit pressure
safety lockouts and reduced unit service life.

For units with blow through condensers, such as
these wall-mount units, it is recommended there be
a minimum distance of 10' between the front of the
unit and any barrier or 20' between the fronts of two
opposing (facing) units.

Clearances Required for Service Access and
Adequate Condenser Airflow

LEFT

MODELS

W18A, W24A, W30A, W36A 15" 20" 10'

W18L, W24L, W30L, W36L 20" 15" 10'

W42A, W48A, W60A, W72A 20" 20" 10'

W42L, W48L, W60L, W72L 20" 20" 10'

NOTE: For side-by-side installation of two units there must be
20" between units. This can be reduced to 15" by using a W**L
model (left side compressor and controls) for the left unit and
W**A (right side compressor and controls) for right unit.

See Specifications Sheet S3532.

SIDE

RIGHT

SIDE

DISCHARGE

SIDE

Clearance to Combustibles

!

WARNING

Fire hazard.

Maintain minimum 1/4" clearance between the
supply air duct and combustible materials in

the rst 3' of ducting.

Failure to do so could result in re causing
damage, injury or death.

The unit itself is suitable for 0" clearance, but the
supply air duct flange and the first 3' of supply air duct
require a minimum of 1/4" clearance to combustible
material. However, it is generally recommended that
a 1" clearance is used for ease of installation and
maintaining the required clearance to combustible
material. See Figures 4A-D on pages 9-12 for details
on opening sizes.

Minimum Clearances Required to
Combustible Materials

MODELS

W18A, L
W24A, L

W30A, L
W36A, L

W42A, L
W48A, L
W60A, L
W72A, L

SUPPLY AIR DUCT

FIRST 3'

0" 0"

1/4" 0"

1/4" 0"

CABINET

Manual 2100-678
Page 6 of 24

FIGURE 2

Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)

WIDTH

DEPTH

MODEL

W18*A
W24*A

W30*A
W36*A

W42*A
W48*A

W60*A
W72*A

(W)

33.300 17.125 74.563 7.88 19.88 11.88 19.88 35.00 10.88 29.75 20.56 30.75 32.06 33.25 31.00 2.63 34.13 26.06 10.55 4.19 12.00 9.00

38.200 17.125 74.563 7.88 27.88 13.88 27.88 40.00 10.88 29.75 17.93 30.75 32.75 33.25 31.00 2.75 39.13 26.75 9.14 4.19 12.00 9.00

42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 13.56 31.66 30.00 32.68 26.94 34.69 32.43 3.37 43.00 23.88 10.00 1.44 16.00 1.88

42.075 22.432 93.000 9.88 29.88 15.88 29.88 43.88 13.56 37.00 30.00 40.81 35.06 42.81 40.56 3.37 43.00 31.00 10.00 1.44 16.00 10.00

HEIGHT

(D)

All dimensions are in inches. Dimensional drawings are not to scale.

SUPPLY RETURN

(H)

A B C B E F G I J K L M N O P Q R S T

W**A
RIGHT
UNIT

W**L
LEFT
UNIT

5.88

E
O

Supply Air Opening

B

Return Air Opening

Back View

MIS-3889

W

Filter Access Panel

Ventilation Air

Condenser

Air Outlet

Front View

.44

Bottom Installation
Bracket

MIS-3889

1

5.88

F

G

MIS-3890

MIS-3890

R

S

S

S

S

S

T

Built In
Rain Hood
4° Pitch

2.13

A

I

C

K

D

1.250

Cond.

Air

Inlet

Side View

J

D

1.250

Cond.

Air

Inlet

Side View

2.13

A

C

K

J

Drain

Electric
Heat

I

Side Wall

Mounting

Brackets

(Built In)

Top Rain

Flashing
Shipping
Location

Optional

Electrical

H

Entrances

L

Heater
Access
Panel

C. Breaker/
Disconnect
Access Panel
(Lockable)

Standard flush

vent door for

non-ERV/CRV

Econ. models

Hood for
ECON models
only

7.000

Low Voltage
Electrical
Entrance

High Voltage
Electrical
Entrance

M

P

N

Q

Built In

Rain Hood

W

Hood for ECON
models only

Filter Access Panel

1

Standard

F

G

Ventilation Air

Condenser

flush vent
door for non­ERV/CRV
Econ.
models

Air Outlet

4° Pitch

Heater

Access

Panel

Electric

Heat

C. Breaker/
Disconnect

Access Panel

(Lockable)

7.00

Low Voltage

Electrical
Entrance

High Voltage

Electrical
Entrance

Front View

E
O

Supply Air Opening

B

Return Air Opening

Back View

Side Wall
Mounting
Brackets
(Built In)

Top Rain

Flashing
Shipping
Location

Optional
Electrical
Entrances

H

L

M

P

N

Q

R

S

S

S

S

S

T

Drain

.44

Bottom

Installation

Bracket

Manual 2100-678
Page 7 of 24

WALL-MOUNT UNIT INSTALLATION

Mounting the Units

!

WARNING

Heavy item hazard.

Use more than one person to handle unit.

Failure to do so could result in unit damage or
serious injury.

NOTE: It may be best to spot some electrical knockouts
(such as those located on the back of the wall­mount unit) before units are mounted and access is
unavailable or limited (see Figure 2 to locate pre­punched knockouts).

Two holes for the supply and return air openings must
be cut through the wall as shown in Figures 4A-D on
pages 9-12. On wood frame walls, the wall construction
must be strong and rigid enough to carry the weight
of the unit without transmitting any unit vibration. All
walls must be thoroughly inspected to insure that they
are capable of carrying the weight of the installed unit.

In retrofit (unit replacement) installations, the openings
cut for the original equipment may not line up exactly
with needs of this installation. Modifications may need
to be made, such as increasing or decreasing the size
of the wall cutouts. The existing bolt placement may
not line up in which case the original bolts would need
to be removed or cut away.

1. These units are secured by wall mounting flanges
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached
to skid for shipping, is provided for ease of
installation, but is not required.

2. The unit itself is suitable for 0" clearance, but the
supply air duct flange and the first 3' of supply
air duct require a minimum of 1/4" clearance to
combustible material. However, it is generally
recommended that a 1" clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figures
4A-D for details on opening sizes.

3. Locate and mark lag bolt locations and location for
optional bottom mounting bracket, if desired (see
Figures 4A-D).

4. Mount bottom mounting bracket (if used).

5. If desired, hook top rain flashing (attached to front­right of supply flange for shipping) under back
bend of top.

6. Position unit in opening and secure with fasteners
sufficient for the application such as 5/16" lag/
anchor/carriage bolts; use 7/8" diameter flat washers
on the lag bolts. It is recommended that a bead
of silicone caulking be placed behind the side
mounting flanges.

7. Secure optional rain flashing to wall and caulk
across entire length of top (see Figures 4A-D).

8. For additional mounting rigidity, the return air
and supply air frames or collars can be drilled
and screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.

9. A plastic drain hose extends from the drain pan at
the top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected
to a drain system of some type, it must be an open
or vented type system to assure proper drainage.

10. Install outdoor temperature/humidity sensor (see
Figure 3). Remove grommet from base and sensor.
Discard shipping bracket. Place sensor extension
through hole in base under condenser fan and
secure to base with screw.

FIGURE 3

Outdoor Sensor Installation

Manual 2100-678
Page 8 of 24