Carrier WEATHERMAKER 8000 58WAV Manual Do Proprietário
1. Heating mode
When the wall thermostat "calls for heat," the R-W circuit
closes. The furnace control performs a self-check, verifies the
pressure switch contacts are open, and starts inducer motor.
closes. The furnace control performs a self-check, verifies the
pressure switch contacts are open, and starts inducer motor.
a. Prepurge period—As the inducer motor comes up to speed,
the pressure switch contacts close to begin a 15-sec
prepurge period.
prepurge period.
b. Igniter warm-up—At the end of the prepurge period, the
igniter is energized for a 17-sec igniter warm-up period.
c. Ignition sequence—When the igniter warm-up period is
completed, the gas valve opens, permitting gas flow to the
burners where it is ignited. After 5 sec, the igniter is
de-energized and a 2-sec flame-sensing period begins.
burners where it is ignited. After 5 sec, the igniter is
de-energized and a 2-sec flame-sensing period begins.
d. HUM terminal is energized with the gas valve. See
accessories in the Electrical Connections section.
e. Flame-sensing—When burner flame is sensed, the control
begins the blower on delay period and continues holding
the gas valve open. If burner flame is not sensed, the
control closes the gas valve and repeats ignition cycle.
the gas valve open. If burner flame is not sensed, the
control closes the gas valve and repeats ignition cycle.
NOTE:
Ignition sequence will repeat 3 additional time before a
lockout occurs. Lockout automatically resets after 3 hr, or can be
manually reset by turning 115v off (not at thermostat) for 3 sec
minimum, then on again.
manually reset by turning 115v off (not at thermostat) for 3 sec
minimum, then on again.
f. Blower on delay—Forty-five sec after burner flame is
proven, the blower motor is energized on heating speed.
Simultaneously, the humidifier and electronic air cleaner
terminals (HUM and C
Simultaneously, the humidifier and electronic air cleaner
terminals (HUM and C
OM
-24V for humidifier, EAC-1 and
EAC-2 for electronic air cleaner) are energized. If jumper is
across PL 7-6 and PL 7-9.
across PL 7-6 and PL 7-9.
g. Blower off delay—When the thermostat is satisfied, the
circuit between R-W is broken, de-energizing the gas valve
stopping gas flow to the burners. The blower motor and
EAC remain energized 90, 135, 180, or 225 sec (depending
on the blower off-time selection). The furnace is factory set
for a 135-sec blower off delay.
EAC remain energized 90, 135, 180, or 225 sec (depending
on the blower off-time selection). The furnace is factory set
for a 135-sec blower off delay.
h. Post-purge—The inducer motor remains energized 5 sec
after the burners are extinguished. If jumper is across PL
7-6 and PL 7-9, the post-purge period is 15 sec.
7-6 and PL 7-9, the post-purge period is 15 sec.
2. Cooling mode
a. Single-Speed Outdoor Unit-See Figures 9,10 and 12.
The thermostat closes the R to G and Y circuits. The
R-Y/Y2 circuit starts the outdoor unit, and the R to G and
Y/Y2 circuits start the furnace blower motor on COOL
speed. Electronic air cleaner EAC-1 terminal is energized
with 115v whenever blower is operating.
When thermostat is satisfied, R to G and Y/Y2 circuits are
opened. The outdoor unit stops and the furnace blower
continues operating on COOL speed for an additional 90
sec. Jumper Y/Y2 to DHUM on the furnace control to
reduce the cooling off-delay to 3 sec from 90. See figure
15.
R-Y/Y2 circuit starts the outdoor unit, and the R to G and
Y/Y2 circuits start the furnace blower motor on COOL
speed. Electronic air cleaner EAC-1 terminal is energized
with 115v whenever blower is operating.
When thermostat is satisfied, R to G and Y/Y2 circuits are
opened. The outdoor unit stops and the furnace blower
continues operating on COOL speed for an additional 90
sec. Jumper Y/Y2 to DHUM on the furnace control to
reduce the cooling off-delay to 3 sec from 90. See figure
15.
b. Two-Speed Outdoor Unit without Thermidistat-See Fig.
14.
The thermostat closes the R to G and Y1 circuits for low
cooling and the R to G, Y1 and Y/Y2 circuits for high
cooling. The R to Y1 circuit starts the outdoor unit on low
cooling and the R to G and Y1 circuits start the furnace
blower on FAN speed. The R to Y1 and Y2 circuits start
the outdoor unit on high cooling and the R to G, Y1 and Y2
circuits start the furnace blower on COOL speed.
If the R to Y2 circuit opens with the R to G and Y1 circuits
still closed, the outdoor unit will drop to low cooling and
the furnace control will drop the blower speed to FAN.
cooling and the R to G, Y1 and Y/Y2 circuits for high
cooling. The R to Y1 circuit starts the outdoor unit on low
cooling and the R to G and Y1 circuits start the furnace
blower on FAN speed. The R to Y1 and Y2 circuits start
the outdoor unit on high cooling and the R to G, Y1 and Y2
circuits start the furnace blower on COOL speed.
If the R to Y2 circuit opens with the R to G and Y1 circuits
still closed, the outdoor unit will drop to low cooling and
the furnace control will drop the blower speed to FAN.
Fig. 15—Furnace Control
A99417
J1
1
2
3
4
5
2
3
4
5
90
135
180
225
180
225
3-AMP FUSE
R
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX)
LED OPERATION &
DIAGNOSTIC LIGHT
HARNESS CONNECTOR
24-V TRANSFORMER SEC-2
SPARE-1
SPARE-2
EAC-1 ELECTRONIC AIR CLEANER
TERMINALS (115-VAC 1.0 AMP MAX)
TERMINALS (115-VAC 1.0 AMP MAX)
BLOWER OFF DELAY
JUMPER SELECT
JUMPER SELECT
115-VAC (L2) NEUTRAL
CONNECTION
24-V THERMOSTAT
TERMINALS
BLOWER SPEED
SELECTION TERMINALS
INDUCER MOTOR
CONNECTOR
CONNECTOR
115-VAC (L1)
POWER SUPPLY
HOT SURFACE
IGNITOR CONNECTOR
HEAT
SEC-1
TEST/TWIN
COOL
Com
24V
DHUM
Y1
HUM
G
Y/Y
2
2
W
PRI
FAN
EAC-2
12
3
4
5
6
78
9
1
0
1
1
13