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7
DOWN FLOW
BASE KIT (KFACB)
UNIT AGAINST WALL
1/8" (3.18 mm) 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” (101.6 mm) MAX
4”
(
101.6 mm
)
MAX
A07141
Fig. 7 - Manufactured and Mobile Home Installation
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
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
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:
1. Connect 208/230v power leads from field disconnect to yel-
low 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.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing or servicing unit, always turn off all power
to unit. There may be more than 1 disconnect switch. Turn
off accessory heater power if applicable.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
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.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Field wires on the line side of the disconnect 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.
!
WARNING
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 must have a separate branch electric circuit with
a field- supplied disconnect switch located within sight from and
readily accessible from the unit.
A factory- authorized disconnect kit is available for installation of
0- through 10- kW applications. When electric heat packages with
circuit breakers are installed, the circuit breaker can be used as a
disconnect.
Transformer is factory wired for 230 - v operation. For 208- v
applications, disconnect black wire from 230 - v terminal on
transformer and connect it to 208- v terminal. (See Fig. 8.)
230
C
208
BRN
RED
YEL
BLK
SECONDARY
PRIMARY
A94067
Fig. 8 - Transformer Connections
B. 24- V Control System Connections to Unit Printed- Circuit
Board (PCB)
Use No. 18 AWG color- coded, insulated (35_C minimum) wires
to make low- voltage connections between User Interface and unit.
If User Interface is located more than 100 ft. from unit (as
measured along the low- voltage wires), use No. 16 AWG
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