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"'x OR
UNIT AGAINSTWALL
1/8-1NTHICK ANGLE
MOUNTING BRACKET
(TYPICAL BOTH SIDES)
_ i DOWN FLOW
-- BASEKIT (KFACB)
_._ SECURE UNITTO FLOOR
ANGLE BRACKETOR PIPESTRAP
t
4" MAX
SECURE FAN COIL TO STRUCTURE
UNIT AWAY FROM WALL
PIPE STRAP
(TYPICAL BOTH SIDES)
A02003
4" MAX Fig. 7--A-Coil
PROCEDURE 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 FV4B units with 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 nmst be insulated and
covered with vapor ban'ier.
Ductwork Acoustical Treatment
Metal duct systems that do not have a 90 ° elbow and 10 ft of main duct to first branch takeoff may reqnire interual acoustical insulation 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.
PROCEDURE 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.
z_ WARNING: Field wires on the line side of the disconnect found in the fan coil unit remain live, even when the pull-out
is removed. Service and maintenance to incoming wiring can not be performed until the main disconnect switch (remote to
the unit) is turned off. Failure to do so will result in electrical shock causing personal injury or death.
A. Line-Voltage Connections
If unit contains an electric heater, remove and discard power plug from fan coil and connect male plug from heater to female plug from unit wiring
harness. (See Electric Heater Installation Instructions.)
For units without electric heat:
i. Connect 208/230v power leads from field disconnect to yellow and black stripped leads.
2. Connect ground wire to unit ground lug.
Check all factory wiring per unit wiring diagram and inspect factory wiring connections to be sure none were loosened in transit or installation.
z_x WARNING: Before installing or servicing system, always turn off all power to system. There may be more than 1
disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death.
z_ WARNING: If a disconnect switch is to be mounted on the unit, select a location where drill or fastener will not contact
electrical or refrigerant components. Electrical shock can cause personal injury or death.
NOTE: Before proceeding with electrical connections, make certain that supply voltage, frequency, and phase are as specified on unit rating plate.
Be sure that electrical service provided by the utility is sufficient to handle the additional load imposed by this equipment. See unit wiring label
for proper field high- and low-voltage wiring. Make all electrical connections in accordance with NEC and any local codes or ordinances that may
apply. Use copper wire only. The unit nmst have a separate branch electric circuit with a field-supplied disconnect switch located within sight from,
and readily accessible from the unit.
6
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