Bard CH3S1 사용자 설명서

Manual 2100-455M 

Page  8 of 28

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.

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/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 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.

Any heat pump is more critical of proper operating 
charge and an adequate duct system than a straight 
air conditioning unit.  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.

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.

These units are suitable for 0 inch clearance to 
combustible material.  See Wall Mounting Instructions 
and Figures 4, 5, 6, 7 & 8 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 RG3 through RG5 or RFG3 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.

A 2-inch pleated 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 

filter access door.

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.

  1. Two holes for the supply and return air openings 

must be cut through the wall as shown in Figure 4.

  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.