Allied A97USMV, Руководство по установке

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506887-01 Page 33 of 78 Issue 1213
8. One line voltage “HUM” 1/4” spade terminal is provided
on the furnace integrated control. Any humidifier or other
120V accessory rated up to
one amp can be connected
to this terminal with the neutral leg of the circuit being
connected to one of the provided neutral terminals. See
Figure 41 for location of terminal. This terminal is
energized in the heating mode when the indoor blower
is operating.
9. One 24V “H” terminal is provided on the furnace
integrated control terminal block. Any humidifier rated
up to 0.5 amp can be connected to this terminal with the
ground leg of the circuit being connected to either ground
or the “C” terminal. See Figure 41 for location of terminal.
10. Install the room thermostat according to the instructions
provided with the thermostat. See Table 11 for
thermostat connections. If the furnace is being matched
with a heat pump, refer to the instruction packaged with
the dual fuel thermostat.
Thermostat Selection
A Confort Sync TM thermostat must be used in communicating
applications. Refer to the instructions provided with the
thermostat for installation, set-up and operation.
This unit is designed to operate in a variable rate capacity
mode using a two-stage thermostat. This unit will
automatically adjust firing rate based upon thermostat cycle
times.
For optimal performance use a high quality electronic digital
thermostat or any other with adjustable settings for 1st stage
/ 2nd stage on / off differentials and adjustable stage timers.
The following is a two-stage thermostat setup for optimal
variable rate capacity mode:
First heat stage differential set to 1/2 to 1° F; second heat
stage differential set to 1/2 or 1° F; second heat stage upstage
timer disabled, or set to maximum (1 hr. minimum).
NOTE - When the furnace is used with a Comfort Sync TM
thermostat, proper indoor blower speed selections are
made by the communicating thermostat.
Indoor Blower Speeds
1. When the thermostat is set to “FAN ON”, the indoor blower
will run continuously at approximately 38% of the second
stage cooling speed when there is no cooling or heating
demand.
2. When the unit is running in the heating mode, the
integrated control will automatically adjust the blower
speed to match the furnace firing rate. This speed can
be adjusted up or down by 7.5% or 15% using DIP
switches 14 through 16 for the low heat speed and 17
through 19 for the high heat speed.
3. When there is a cooling demand, the indoor blower will
run on the cooling speed designated by the positions of
DIP switches 8 through 11.
Generator Use - Voltage Requirements
The following requirements must be kept in mind when
specifying a generator for use with this equipment:
•
The furnace requires 120 volts ± 10% (Range: 108
volts to 132 volts).
•
The furnace operates at 60 Hz ± 5% (Range: 57 Hz to
63 Hz).
•
The furnace integrated control requires both polarity
and proper ground. Both polarity and proper grounding
should be checked before attempting to operate the
furnace on either permanent or temporary power.
•
Generator should have a wave form distortion of less
than 5% THD (total harmonic distortion).
Table 9
Run Length – Non Communicating