Manual 2100-402
Page 6
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 3A 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.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
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.
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.
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.
FILTERS
WL6022 AND WL4842 ONLY
A one inch throw away 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 one inch washable filter
and a two inch pleated filter are also available as
optional accessories. The internal filter brackets are
adjustable to accommodate the two inch filter by
bending the metal tabs holding the 1 inch filter down.
There are two tabs on each side of the filter.
NOTE: WL6023 and WL4843 models require the use
of a return air filter grille.
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 1 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.
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 any tags
and/or labels attached to the equipment.
Содержание WL4842
Страница 5: ...Manual 2100 402 Page 3 FIGURE 1 UNITDIMENSIONS WL602N WL6023 WL4843 ONLY MIS 1451...
Страница 6: ...Manual 2100 402 Page 4 FIGURE 2 UNITDIMENSIONS WL6022 WL4842 ONLY MIS 1452...
Страница 10: ...Manual 2100 402 Page 8 FIGURE 3 MOUNTINGINSTRUCTIONS WL602N WL6023 WL4843 ONLY MIS 1349...
Страница 11: ...Manual 2100 402 Page 9 FIGURE 4 MOUNTINGINSTRUCTIONS WL6022 WL4842 ONLY MIS 1444...
Страница 14: ...Manual 2100 402 Page 12 FIGURE 8 COMMONWALLMOUNTINGINSTALLATIONS MIS 550...
Страница 16: ...Manual 2100 402 Page 14 FIGURE 9 UNIT 24V TERMINAL BOARD MIS 1373A...