and away from back of fan coil, remove all slack, and
fasten to wall stud of structure using 5/16-in. lag screws.
Typical both sides of fan coil.
b. If fan coil is against wall, secure fan coil to wall stud using
1/8-in. thick right-angle brackets. Attach brackets to fan
coil using No. 10 self tapping screws and to wall stud using
5/16-in. lag screws. (See Fig. 7.)
Step 3—Air Ducts
Connect supply-air duct over outside of 3/4-in. flange provided on
supply-air opening. Secure duct to flange with proper fasteners for
type of duct used, and seal duct-to-unit joint.
Duct connection flanges are provided on unit air discharge
connection.
When using 40FKA units with 18-, 20-, 24-, and 30-kw electric
heaters, maintain a 1-in. clearance from combustible materials to
discharge plenum and ductwork for a distance of 36 in. from unit.
Use accessory downflow base to maintain proper clearance on
downflow installations.
Use flexible connectors between ductwork and unit to prevent
transmission of vibration. When electric heater is installed, use
heat resistant material for flexible connector between ductwork
and unit at discharge connection. Ductwork passing through
unconditioned space must be insulated and covered with vapor
barrier.
DUCTWORK ACOUSTICAL TREATMENT
Metal duct systems that do not have a 90° elbow and 10 ft of main
duct to first branch takeoff may require internal acoustical insula-
tion lining. As an alternative, fibrous ductwork may be used if
constructed and installed in accordance with the latest edition of
SMACNA construction standard on fibrous glass ducts. Both
acoustical lining and fibrous ductwork shall comply with National
Fire Protection Association Standards 90A or B as tested by UL
Standard 181 for Class 1 air ducts.
Step 4—Electrical Connections
On units with a factory installed disconnect with pull-out removed,
service and maintenance can be safely performed on only the load
side of the control package.
Fig. 6—A-Coil in Horizontal-Right Application
A00071
COIL
SUPPORT
RAIL
COIL
BRACKET
DRAIN PAN
SUPPORT
BRACKET
COIL
SUPPORT
RAIL
COIL
BRACKET
HORIZONTAL
DRAIN PAN
PRIMARY DRAIN
HORIZONTAL RIGHT
SECONDARY DRAIN
HORIZONTAL RIGHT
REFRIGERANT
CONNECTIONS
AIR SEAL
ASSEMBLY
A
B
C
HORIZONTAL
RIGHT
APPLICATION
Fig. 7—A-Coil
A02003
DOWN FLOW
BASE KIT (KFACB)
UNIT AGAINST WALL
1/8-IN. THICK ANGLE
MOUNTING BRACKET
(TYPICAL BOTH SIDES)
SECURE FAN COIL TO STRUCTURE
UNIT AWAY FROM WALL
PIPE STRAP
(TYPICAL BOTH SIDES)
OR
SECURE UNIT TO FLOOR
ANGLE BRACKET OR PIPE STRAP
4” MAX
4” MAX
5
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