Bard W3RV1, W5LV1, W3LV1, W5RV1, W6LV1 User Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED

VARIABLE CAPACITY

ENVIRONMENTAL CONTROL UNITS

MODELS

W3RV1 W3LV1
W5RV1 W5LV1
W6RV1 W6LV1

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506

Since 1914...Moving ahead just as planned.

Manual : 2100-538E
Supersedes: 2100-538D
File: Volume III Tab 16
Date: 12-15-11

Manual 2100-538E
Page 1 of 23

Contents

Getting Other Information and Publications 3

Wall Mount General Information

ECU Wall Mount Model Nomenclature .................... 4

Shipping Damage .................................................... 4

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

Duct Work ................................................................ 5

Filters ................................................................ 5

Fresh Air Intake ....................................................... 5

Condensate Drain .................................................... 5

Installation Instructions

Wall Mounting Information ....................................... 6

Mounting the Unit .................................................... 6

Clearances Required ............................................... 6

Minimum Clearances ............................................... 6

Wiring – Main Power ............................................. 13

Wiring – Low Voltage Wiring ................................. 13

Digital Thermostat/Controller ................................. 13

Wiring Diagram ...................................................... 13

Figures

Figure 1 Fresh Air Damper Assembly ................... 5

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

Figure 3A Mounting Instructions .............................. 8

Figure 3B Mounting Instructions .............................. 9

Figure 4 Electric Heat Clearance ........................ 10

Figure 5 Wall Mounting Instructions ..................... 11

Figure 6 Wall Mounting Instructions ..................... 11

Figure 7 Common Wall Mounting Installations .... 12

Figure 8 Fan Blade Setting ................................. 19

Start Up

General .............................................................. 14

Topping Off System Charge ................................... 14

Safety Practices ..................................................... 14

Important Installer Note ......................................... 15

High Pressure Switch ............................................ 15

Three Phase Scroll Compressor............................ 15

Phase Monitor ....................................................... 15

Service Hints ......................................................... 15

Digital Controller .................................................... 15

Sequence of Operation .................................. 16 & 17

Lead/Lag Sequence .............................................. 17

Compressor Control Module .................................. 18

Adjustments ........................................................... 18

Pressure Service Ports .......................................... 18

Troubleshooting

Fan Blade Setting Dimensions .............................. 19

Removal of Fan Shroud ......................................... 19

Refrigerant Charge ................................................ 19

Tables

Table 1 Fan Blade Dimensions .......................... 19

Table 2 Cooling Pressure .................................. 20

Table 3 Electrical Specifications W*R/LV .......... 21

Table 4 Recommended Airflow .......................... 22

Table 5 Maximum ESP Electric Heat Only........ 22

Table 6 Electric Heat ......................................... 22

Table 7 Vent & Control Options ......................... 23

Manual 2100-538E
Page 2 of 23

GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the air
conditioner or heat pump. You can usually find 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

Residential Winter and Summer Air Conditioning

Duct Design for Residential .............. ACCA Manual D

Winter and Summer Air Conditioning and Equipment
Selection

FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Ave. N.W.
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]

Manufactured under the following

U.S. Patent numbers:
5,485,878; 5,301,744

Manual 2100-538E
Page 3 of 23

WALL MOUNT GENERAL INFORMATION

Environmental Control Unit (ECU) Wall-Mount Model Nomenclature

W 3 R V 1–R 10 X X X X X X

MODEL
SERIES

Wall-Mount

SYSTEM DESIGN

Variable Capacity

(Digital Compressor) ECU

COMPRESSOR &
CONTROLS LOCATION

R - Right Side
L - Left Side

REVISIONS

SPECIAL
FEATURES

ELECTRICAL RATING

R - 230/208-60-1 & 220/200-50-1
S - 230/208-60-3 & 220/200-50-3
T - 460-60-3 & 400-50-3

KW

Electric
Heat @
Rated
Voltage

COLOR OPTIONS

X - Beige (Standard)
1-White
4 - Buckeye Gray
5 - Desert Brown
6 - Dark Bronze
A - Aluminum
S - Stainless Steel

COIL OPTIONS

X - Standard Copper Tube/Aluminum Fin
1 - Phenolic Coated Indoor Coil
2 - Phenolic Coated Outdoor Coil
3 - Phenolic Coated Indoor & Outdoor Coil

OTHER OPTIONS

X - None

NOMINAL TONS

3 - 3 Ton (37,000 on 60Hz; 33,700 on 50Hz)
5 - 5 Ton (54,000 on 60Hz; 49,200 on 50Hz)
6 - 6 Ton (68,000 on 60Hz; 61,900 on 50Hz)

NOTE: Vent options X and B are without exhaust capability. May require separate field supplied barometric relief in building.

SHIPPING DAMAGE

Upon receipt of equipment, the carton 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.

VENTILATION OPTIONS

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

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 “Starting
Procedure” and any tags and/or labels attached to the
equipment.

FILTER OPTIONS

X - One Inch Throwaway (Standard)
W - One Inch Washable
P - Two Inch Pleated

While these instructions are intended as a general

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.

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

Size of unit for a proposed installation should be based
on heat loss calculation made according to methods of
Air Conditioning Contractors of America (ACCA). The
air duct should be installed in accordance with the
Standards of the National Fire Protection 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.

OUTLET OPTIONS

X - Front (Standard)

Manual 2100-538E
Page 4 of 23

DUCT WORK

All duct work, supply and return, must be properly sized
for the design airflow 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.

Refer to Maximum ESP of operation Electric Heat
Table 5.

Design the duct work according to methods given by the
Air Conditioning Contractors of America (ACCA).
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.

For model series W3R/LV, W5R/LV and W6R/LV a 1/4
inch clearance to combustible material for the first three
feet of duct attached to the outlet air frame is required.
See Wall Mounting Instructions and Figures 3A, 3B and
4 for further details.

Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.

Some installations may not require any return air duct. A
metallic return air grille is required with installations not
requiring a return air duct. The spacing between louvers
on the grille shall not be larger than 5/8 inch.

Any grille that meets with 5/8 inch louver criteria may be
used. It is recommended that Bard Return Air Grille Kit
RG2 through RG5 or RFG2 through RFG5 be installed
when no return duct is used. Contact distributor or
factory for ordering information. If using a return air
filter grille, filters must be of sufficient size to allow a
maximum velocity of 400 fpm.

NOTE: If no return air duct is used, applicable

installation codes may limit this cabinet to
installation only in a single story structure.

FILTERS

A 1-inch throwaway filter is standard with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the filter access panel. A 1-inch washable filter and 2­inch pleated filter are also available as optional
accessories. The internal filter brackets are adjustable
to accommodate the 2-inch filter by bending two (2)
tabs down on each side of the filter support bracket.

FRESH AIR INTAKE

All units are built with fresh air inlet slots punched in
the service door.

If the unit is equipped with a fresh air damper assembly,
the assembly is shipped already attached to the unit.
The damper blade is locked in the closed position. To
allow the damper to operate, the maximum and
minimum blade position stops must be installed. See
Figure 1.

All capacity, efficiency and cost of operation
information is based upon the fresh air blank-off plate in
place and is recommended for maximum energy
efficiency.

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

CONDENSATE DRAIN

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.

FIGURE 1

FRESH AIR DAMPER

Manual 2100-538E
Page 5 of 23

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W
W
W
W

T

INSTALLATION INSTRUCTIONS

WALL MOUNTING INFORMATION

1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figures 3A
& 3B.

2. 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.

3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the weight
of the installed unit.

MOUNTING THE UNIT

1. These units are secured by wall mounting brackets
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 supply air duct flange and the first 3 feet of
supply air duct require a minimum of 1/4 inch
clearance to combustible material for model series

W3R/LV, W5R/LV and W6R/LV

generally recommended that a 1-inch clearance is
used for ease of installation and maintaining the
required clearance to combustible material. See
Figures 3A & 3B for details on opening sizes.

3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figures 3A & 3B.

. However, it is

WARNING

Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the first 3 feet of duct can result in
fire causing damage, injury or death.

6. Position unit in opening and secure with 5/16 lag
bolts; use 7/8 inch diameter flat washers on the lag
bolts.

7. Secure rain flashing to wall and caulk across entire
length of top. See Figures 3A & 3B.

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. On side-by-side installations, maintain a minimum
of 20 inches clearance on right side to allow access
to control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.

4. Mount bottom mounting bracket.

5. Hook top rain flashing, attached to front - right of
supply flange for shipping, under back bend of top.

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NOTE: For side by side installation of two (2) W*RV models there
must be 20" between units. This can be reduced to 15" by using
a W*LV model (left side compressor and controls) for the left unit
and W*R (right side compressor and controls) for right unit.

See Specification Sheet.

Manual 2100-538E
Page 6 of 23

EDISTFEL

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1VL3

1VR5

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1VL5

1VR6

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

W*RV
RIGHT
UNIT

5.75

F

G

Condenser

Air Outlet

YLPPUSNRUTER

AB C B E F G I J K L MNOP QR 1S2ST

Built In

W

Rain Hood

4° Pitch

Heater

Access

Panel

Electric

C. Breaker/
Disconnect

Access Panel

(Lockable)

Filter Access
Panel

Vent Option
Door

Ventilation
Air

Low Voltage

Electrical
Entrance

High Voltage

Electrical
Entrance

Heat

D

Cond.

Air

Inlet

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2.13
Side Wall

A

Mounting

Brackets

(Built In)

I

Top Rain

Flashing
Shipping
Location

Optional

HKC

Electrical

Entrances

J

L

M

P

Supply Air Opening

B

Return Air Opening

R

S1

S1

S1

S2

S2

W*LV
LEFT
UNIT

T

D

Cond.

Air

Inlet

Side View

Drain

Low Voltage
Electrical
Entrance

High Voltage
Electrical
Entrance

Front View

E

.44

R

S1

S1

S1

S2

S2

T

Bottom

Drain

Installation

Bracket

O

Supply Air Opening

Return Air Opening

Back View

9.06

Side Wall
Mounting
Brackets
(Built In)

Top Rain

Flashing
Shipping
Location

Optional
Electrical
Entrances

M

P

2.63

L

Side View

2.13
A

I

C

H

K

J

Built In
Rain Hood
4° Pitch

Electric
Heat

Heater
Access
Panel

C. Breaker/
Disconnect
Access Panel
(Lockable)

Filter Access

Panel

Ventilation

Vent Option

Door

N

Air

Back View

Q

W

Condenser

Bottom Installation
Bracket

MIS-2921

5.75

F

G

Air Outlet

Front View

MIS-2922

Manual 2100-538E
Page 7 of 23