Barometric Draft Control; Electrical Connections; Filters; Horizontal Or Downflow Installation - Carrier 110 Series Installation, Start-Up, And Operating Instructions Manual

VOLTS—
UNIT
HERTZ—
SIZE
PHASE—
105-12 115—60—1
120-20 115—60—1
* Permissible limits of voltage range at which unit will operate satisfactorily.
† Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
‡ Time-delay fuse is recommended.
Oil line entry holes are provided in side panels. Two holes are
provided in each location so that a 2-pipe system may be used if
desired.
An oil filter should be used with all oil burners and should be
installed as close to burner as possible.

BAROMETRIC DRAFT CONTROL

The barometric draft control shipped with furnace MUST be used
with furnace to ensure proper operation. Instructions for installing
control are packed with control.

ELECTRICAL CONNECTIONS

ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in serious injury,
death, or property damage.
The unit cabinet must have an uninterrupted or unbroken
electrical ground to minimize personal injury if an electrical
fault should occur. A green ground screw is provided in
control box for this connection.
115-V Wiring
Before proceeding with electrical connections, make certain that
voltage, frequency, and phase correspond to that specified on unit
rating plate. Also, check to be sure that service provided by utility
is sufficient to handle load imposed by this equipment. Refer to
rating plate or Table 7 for equipment electrical specifications.
Make all electrical connections in accordance with National
Electrical Code (NEC) ANSI/NFPA 70-2001 and any local codes
or ordinances that might apply. For Canadian installations, all
electrical connections must be made in accordance with Canadian
Electrical Code CSA C22.1 or subauthorities having jurisdiction.
FIRE HAZARD
Failure to follow this warning could result in serious injury,
death, or property damage.
Do not connect aluminum wire between disconnect switch
and furnace. Use only copper wire.
The control system depends on correct polarity of power supply.
Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig.
3.
A separate line voltage supply MUST be used with a fused
disconnect switch or circuit breaker between main power panel
and unit. (See Fig. 3.)
Metallic conduit (where required/used) may terminate at side panel
of unit. It is not necessary to extend conduit inside unit from side
panel to control box.
When replacing any original furnace wiring, use only 105°C No.
14 AWG copper wire.
Table 7—Electrical Data
OPERATING
VOLTAGE RANGE
AMPS
Max* Min*
132 104
132 104
MAX MIN
MAX WIRE
UNIT WIRE
LENGTH (FT)†
GAGE
12.2 14
15.7 12
24-V Wiring
Instructions for wiring thermostat (field supplied) are packed in
thermostat box. Make thermostat connections as shown in Fig. 3 at
24-v terminal board on fan timer board. See Fig. 4-7 for thermostat
wiring.
Accessories
When installing optional accessories to this appliance, follow
manufacturer's Installation Instructions included with accessory.
Other than wiring for thermostat, wire with a minimum of type "T"
insulation (63°F rise) must be used for accessories.

FILTERS

FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to follow this warning could result in fire, personal
injury, or death.
Never operate unit without a filter or with filter access door
removed.
An external filter rack is provided as standard equipment with
furnace. A sufficient clearance should be provided for air filter
access. Refer to Table 8 for filter rack flange dimensions for return
air duct.
Table 8—Filter and Flange (In.)
UNIT AIR FILTER
SIZE SIZE
16 X 24 X 1
105-12
16 X 25 X 1
120-20 20 X 30 X 1

HORIZONTAL OR DOWNFLOW INSTALLATION

For horizontal installation, determine which "side" will become the
"top", when the unit is laid down. Remove the flue pipe clearance
knock-out from the top of that side panel. Install the flue elbow so
that it exits the cabinet of the furnace through that opening.
For counterflow installation, the flue pipe must exit the cabinet
through 1 of the side panel openings (as above), then extended up
the side of the furnace. Insure that adequate clearances to com-
bustibles are observed. Downflow Conversion/Vent Guard Kit
MUST be used.
Remove burner by loosening mounting nuts and turn oil burner
slightly counterclockwise to unlock the key hole burner flange.
Prevent putting undue strain on burner wiring. (It may be neces-
sary to disconnect burner wiring in some cases.)
To reinstall burner, insert on the four burner studs on key hole
burner flange and turn it clockwise to lock it and tighten nuts.
IMPORTANT: Burner must always be installed in the upright
position with ignition control on top.
7
MAX FUSE OR
CKT BKR AMPS‡
26 15
26 20
FLANGE OPENING
SIZE
or 15 X 23
19 X 29