Bard WE121 Installation Instructions Manual

INSTALLATION INSTRUCTIONS

WALL MOUNTED

PACKAGE AIR CONDITIONERS

Model:

WE121

THIS MODEL USES REFRIGERANT R-407C

and IS FOR 50HZ OPERATION.

Bard Manufacturing Company , Inc.
Bryan, Ohio 43506

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

Manual : 2100-384B
Supersedes: 2100-384A
File: Volume III Tab 16
Date: 09-17-10

Manual 2100-384B
Page 1 of 19

CONTENTS

Getting Other Informations and Publications ......... 3

Wall Mount General Information

Air Conditioner Wall Mount Model Nomenclature..... 4

Shipping Damage ..................................................... 6

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

Duct Work ................................................................. 6

Filters........................................................................ 6

Fresh Air Intake ........................................................ 7

Condensate Drain..................................................... 7

Installation Instructions

Wall Mounting Information........................................ 8

Proper Unit Placement ............................................. 8

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

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

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

Figures

Figure 1 Unit Dimensions...................................... 5

Figure 2 Blower Damper Assembly....................... 7

Figure 3 Mounting Instructions Using CSRG-1..... 9

Figure 4 Mounting Instructions............................ 10

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

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

Figure 7 Common Wall Mounting

Instructions ........................................... 12

Figure 8 Fan Blade Setting Dimensions ............. 16

Start Up

Important Installer Note .......................................... 14

Service Hints .......................................................... 14

High Pressure Switch ............................................. 14

Sequence of Operation........................................... 14

Compressor Control Module................................... 14

Adjustments............................................................15

Pressure Service Ports...........................................15

Troubleshooting

Fan Blade Setting Dimension ................................. 16

Refrigerant Charge ................................................. 16

Pressure Table........................................................ 17

Optional Field Installed Accessories ....................... 17

R-407C Refrigerant

Service Procedure & Considerations...................... 18

Charging ................................................................. 18

Leaks ...................................................................... 18

Tables

Table 1 Electric Heat Table .................................. 4

Table 2 Electrical Specifications .......................... 4

Table 3 Fan Blade Dimensions.......................... 16

Table 4 Suction Line Temperatures ................... 16

Table 5 Indoor Blower Performance .................. 16

Table 6 Recommended Airflow Range .............. 16

Table 7 Maximum ESP of Operation

Electric Heat Only ................................. 16

Table 8 Pressure Table - Cooling ...................... 17

Table 9 Optional Accessories ............................ 17

Table 10 Temperature / Pressure Chart............... 19

Manual 2100-384B
Page 2 of 19

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 of .......... ANSI/NFPA 90A

Air Conditioning and Ventilating Systems

Standard for Warm Air Heating ........ ANSI/NFPA 90B

and Air Conditioning Systems

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

Residential Winter and Summer Air Conditioning

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

Residential Winter and Summer Air Conditioning
and Equipment Selection

FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Avenue NW
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, Refrigerating

and Air Conditioning Engineers, Inc.

1791 Tullie Circle, NE
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 2100-384B
Page 3 of 19

WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

WE 12 1 – G 00 X X X X X J

MODEL NUMBER

CAPACITY

12 - 1 Ton

REVISIONS

VOLTS & PHASE

G - 220/200/50/1

VENTILATION OPTIONS

X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate
E - Economizer (Internal) - Fully Modulating w/Exhaust

KW

00 - No KW
02 - 2 KW
03 - 3 KW

TABLE 1

ELECTRIC HEAT TABLE

ledoMG-121EW

V022V002

WKA1UTBA

CONTROL MODULES

E - Low Ambient Control
J - Telecommunication

COIL OPTIONS

X - Standard Coils

OUTLET OPTIONS

X - Front

COLOR OPTIONS

X - Beige
4 - Buckeye Gray

FILTER OPTIONS

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

1

UTB

201.9038,62.8051,6

307.31052,016.21041,9

TABLE 2

ELECTRICAL HEAT SPECIFICATIONS



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stloVdetaR

sledoM

esahPdna

00G-121EW
20G-

1/05/002/022

30G-

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
2 Based on 75°C copper wire. All wiring must conform to NEC and all local codes.

These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical
Code (latest revision), article 310 for power conductor sizing.

CAUTION: When more than one field 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 3 conductors
are in a raceway.

rewoP

stiucriC

1
1
1

muminiM

tiucriC

yticapmA

7

31
02

1

2

2

mumixaM

esuFlanretxE

tiucriCro

rekaerB

51
51
02

rewoPdleiF

eziSeriW

41
41
21

dnuorG

eziSeriW

41
41
21

Manual 2100-384B
Page 4 of 19

FIGURE 1

UNIT DIMENSIONS

FACTORY BUILT AT 5 INCHES

WE121

Manual 2100-384B
Page 5 of 19

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.

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
air 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 “Starting
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 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.

DUCT WORK

All duct work, supply and return must be properly sized
for the design air flow 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 Table 7 for maximum static pressure available
for duct design.

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.

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.
It is recommended that on this type of installation that a
filter grille be located in the wall. 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 supplied with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the service door. A 2-inch pleated filter is also available
as an optional accessory. The internal filter brackets are
adjustable to accommodate the 2-inch filter by bending
the metal tabs holding the 1-inch filter down. There are
two tabs on each side of the filter.

Manual 2100-384B
Page 6 of 19