Bryant 901KAX, Инструкция по установке, запуску и обслуживанию

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In heat pump applications, the G signal is present in both cooling
and heating modes, permitting the EAC to be controlled from the
G signal only. A user supplied 24vac relay can be driven by the G
terminal, eliminating the need for the relay kit. The selection and
mounting of this ac relay is the responsibility of the installer.
CAUTION: Be sure all field electrical connections are
tight before power is restored to the unit.
D. Final Assembly
1. Slide pre-filters and air cleaner cells into cabinet.
NOTE:
Units are shipped for air entering the right-hand side of
the air cleaner. Reverse the position of the pre-filter and the air
cleaner cells in the cabinet for air entering the left-hand side of the
air cleaner as indicated in Fig. 8. Be sure all airflow arrows are
pointing in the direction of the airflow through the air cleaner and
that the pre-filter is on the entering-air side.
2. Check contact spring location. Cell contact springs MUST
be relocated for left-hand units or applications. Remove
screw holding contact spring to cells and reinstall at
opposite end. (See Fig. 24.) Be sure all airflow arrows are
pointing in the direction of the airflow through the air
cleaner and that the pre-filters are on the entering-air side.
3. Deform pre-filter guide on side opposite pre-filters so
pre-filters can not be reinstalled incorrectly.
4. Replace power door by first inserting bottom tab into place
on bottom edge of door opening. Push top of door and guide
door attachment knob screw into threads. Turn knob clock-
wise until screw engages threads in casing. Continue
turning knob clockwise until door is secure. Ensure good
electrical contact between power door and unit components.
5. Unit can be installed with airflow through cabinet in either
direction. Apply provided airflow decal to cabinet, observ-
ing actual airflow direction. (See Fig. 24.)
IV. STARTUP AND ADJUSTMENTS
The electronic components of the unit convert the incoming vac to
vdc power supply. Unfiltered, contaminated air passes through an
aluminum mesh pre-filter which removes large airborne particles
and distributes the air uniformly across the ionizer-collector
assembly. The air passes through the ionizer and is charged with
7300vdc. The ionizer imparts a positive electrical charge to the
remaining contaminants. As the air continues through the collector
section, the charged contaminants are attracted to the alternately
charged collector plates. The charged contaminants are electro-
statically held by the collector, purifying the airstream.
1. Ensure that entire EAC is clean, dry, and free of foreign
objects.
Fig. 13—Multispeed Direct-Drive Furnaces with Field-
Supplied Sail Switch
A91474
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
POWER SUPPLY (120V-60HZ-10)
BLK WHT
FAN SWITCH
FAN MOTOR
GRD
GRN
BLK WHT OR YEL
ELECTRONIC
AIR CLEANER
Fig. 11—Single-Speed Furnaces
A91474
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
POWER SUPPLY (120V-60HZ-10)
BLK WHT
FAN SWITCH
FAN MOTOR
GRD
GRN
BLK WHT OR YEL
ELECTRONIC
AIR CLEANER
Fig. 14—Furnaces with Printed-Circuit Board
A91477
EAC1 EAC2
GRN BLK YEL OR WHT
ELECTRONIC
AIR CLEANER
FURNACE
TERMINAL
BOARD
SCREW TERMINAL
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
GRD
Fig. 12—Multispeed Direct-Drive Furnaces with Field-
Supplied Air Cleaner Relay
A91475
WIRENUT, FACTORY SUPPLIED
120-V FIELD WIRING
24-V FIELD WIRING
ELECTRONIC
AIR CLEANER
BLK
FAN RELAY FAN SWITCH FAN MOTOR
WHT
OR
RED
YEL
OR
WHT
GRD
GRN
BLK
AIR CLEANER
RELAY (FIELD
SUPPLIED)
TO "G" ON
THERMOSTAT
TO "C" ON
THERMOSTAT
POWER SUPPLY (120V-60HZ-10)
LO
HI
C
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