Instruction manual

25
115 VOLT LINE CONNECTION OF ACCESSORIES
(HUMIDIFIER AND ELECTRONIC AIR CLEANER)
WARNING
To avoid electrical shock, injury or death,
disconnect electrical power before
servicing, or changing any electrical wiring.
The furnace’s integrated control module is equipped with
line voltage accessory terminals for controlling power to an
optional field-supplied humidifier and/or electronic air
cleaner.
The accessory load specifications are as follows:
Humidifier 1.0 Amp maximum at 120 VAC
Electronic Air Cleaner 1.0 Amp maximum at 120 VAC
Turn OFF power to the furnace before installing any
accessories. Follow the humidifier or air cleaner manufac-
turers’ instructions for locating, mounting, grounding, and
controlling these accessories. Accessory wiring connec-
tions are to be made through the 1/4" quick connect
terminals provided on the furnace integrated control mod-
ule. The humidifier and electronic air cleaner hot and
neutral terminals are identified as HUM and EAC. All field
wiring must conform to applicable codes. Connections
should be made as shown below.
ELECTRONIC
AIR CLEANER
HUMIDIFIER
OPTIONAL
ACCESSORIES
12 PIN
CONNECTOR
120 VAC
NEUTRAL
TERMINALS
HUM-N
EAC-N
HUM-H
EAC-H
120 VAC
HOT AND
PARK
TERMINALS
INTEGRATED
CONTROL
MODULE
Accessories Wiring
If it is necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, the wiring must
conform to all local codes, and have a minimum tempera-
ture rating of 105°C. All line voltage wire splices must be
made inside the furnace junction box.
The integrated control module humidifier terminals (HUM)
are energized with 115 volts whenever the induced draft
blower is energized. The integrated control module elec-
tronic air cleaner terminals (EAC) are energized with 115
volts whenever the circulator blower is energized.
XII. Gas Supply and Piping
GENERAL
The furnace rating plate includes the approved furnace
gas input rating and gas types. The furnace must be
equipped to operate on the type of gas applied. This
includes any conversion kits required for alternate fuels
and/or high altitude.
CAUTION
To prevent unreliable operation or
equipment damage, the inlet gas supply
pressure must be as specified on the unit
rating plate with all other household gas
fired appliances operating.
Inlet gas supply pressures must be maintained within the
ranges specified below. The supply pressure must be
constant and available with all other household gas fired
appliances operating. The minimum gas supply pressure
must be maintained to prevent unreliable ignition. The
maximum must not be exceeded to prevent unit overfiring.
Propane Gas
Natural Gas
Inlet Gas Supply Pressure
Minimum:5.0" W.C. Maximum :10.0" W.C.
Minimum:11.0" W.C. Maximum :13.0" W.C.
High Altitude Derate
When this furnace is installed at high altitude, the appropri-
ate High Altitude orifice kit must be applied. This is
required due to the natural reduction in the density of both
the gas fuel and combustion air as altitude increases. The
kit will provide the proper design certified input rate within
the specified altitude range.
High altitude kits are purchased according to the installa-
tion altitude and usage of either natural or propane gas.
Refer to the product Specification Sheet or an Amana
distributor for a tabular listing of appropriate altitude ranges
and corresponding manufacturer’s high altitude (Natural,
propane gas, and/or Pressure Switch) kits.
Do not derate the furnace by adjusting the manifold
pressure to a lower pressure than specified on the furnace
rating plate. The combination of the lower air density and
a lower manifold pressure will prohibit the burner orifice
from drawing the proper amount of air into the burner. This
may cause incomplete combustion, flashback, and pos-
sible yellow tipping.
In some areas the gas supplier may artificially derate the
gas in an effort to compensate for the effects of altitude. If
the gas is artificially derated, the appropriate orifice size
must be determined based upon the BTU/ft
3
content of the
derated gas and the altitude. Refer to the National Fuel
Gas Code, NFPA 54/ANSI Z223.1, and information pro-
vided by the gas supplier to determine the proper orifice
size.