Bard W38A1 Specifications download pdf (Page 7)

Manual 2100-530A

Page 7 of 22

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

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 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.

ESP maximum static pressure is 0.50 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.

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 3

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.

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Bard W38A1 Specifications Page 7

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