Carrier WEATHERMAKER 8000 58WAV Manual Do Proprietário
c. Adjust air temperature rise by adjusting blower speed.
Increase blower speed to reduce temperature rise. Decrease
blower speed to increase temperature rise.
blower speed to increase temperature rise.
Disconnect the electrical power before changing the speed
tap. A failure to follow this warning can cause personal
injury.
tap. A failure to follow this warning can cause personal
injury.
d. To change blower motor speed selections for heating mode,
remove blower motor lead from control HEAT terminal.
(See Fig. 15.) Select desired blower motor speed lead from
1 of the other terminals and relocate it to HEAT terminal.
See Table 9 for lead color identification. Reconnect origi-
nal lead on SPARE terminal.
(See Fig. 15.) Select desired blower motor speed lead from
1 of the other terminals and relocate it to HEAT terminal.
See Table 9 for lead color identification. Reconnect origi-
nal lead on SPARE terminal.
Recheck temperature rise. It must be within limits specified
on unit rating plate. Recommended operation is at midpoint of
rise or above.
on unit rating plate. Recommended operation is at midpoint of
rise or above.
3. Set thermostat heat anticipator.
The thermostat heat anticipator must be set to match the amp
draw of the electrical components in the R-W circuit. Accurate
amp draw readings can be obtained at thermostat subbase
terminals R and W. Fig. 19 illustrates an easy method of
obtaining the actual amp draw. The amp reading should be
taken after the blower motor has started. See the thermostat
manufacturer’s instructions for adjusting the heat anticipator
and for varying the heating cycle length.
draw of the electrical components in the R-W circuit. Accurate
amp draw readings can be obtained at thermostat subbase
terminals R and W. Fig. 19 illustrates an easy method of
obtaining the actual amp draw. The amp reading should be
taken after the blower motor has started. See the thermostat
manufacturer’s instructions for adjusting the heat anticipator
and for varying the heating cycle length.
NOTE:
When using an electronic thermostat, set the cycle rate for
3 cycles per hr.
CHECK SAFETY CONTROLS — The flame sensor, gas valve,
and pressure switch were all checked in the Start-Up Procedures
section as part of normal operation.
and pressure switch were all checked in the Start-Up Procedures
section as part of normal operation.
1. Check primary limit control.
This control shuts off the combustion control system and
energizes the circulating-air blower motor if the furnace
overheats.
energizes the circulating-air blower motor if the furnace
overheats.
The preferred method of checking the limit control is to
gradually block off the return air after the furnace has been
operating for a period of at least 5 minutes. As soon as the
limit has shut off the burners, the return-air opening should be
unblocked. By using this method to check the limit control, it
can be established that the limit is functioning properly and
operates if there is a motor failure.
gradually block off the return air after the furnace has been
operating for a period of at least 5 minutes. As soon as the
limit has shut off the burners, the return-air opening should be
unblocked. By using this method to check the limit control, it
can be established that the limit is functioning properly and
operates if there is a motor failure.
2. Check blocked vent safeguard switch.
The purpose of this control is to permit the safe shutdown of
the furnace during certain blocked vent conditions.
the furnace during certain blocked vent conditions.
a. Disconnect power to furnace and remove vent connector
from furnace outlet collar. Be sure to allow time for vent
pipe to cool down before removing.
pipe to cool down before removing.
Fig. 17—Redundant Automatic Gas Control Valve
A95618
MANIFOLD
PRESSURE TAP
PRESSURE TAP
GAS
PRESSURE
REGULATOR
ADJUSTMENT
PRESSURE
REGULATOR
ADJUSTMENT
INLET
PRESSURE TAP
PRESSURE TAP
ON AND
OFF SWITCH
OFF SWITCH
Fig. 18—Burner Flame
A89020
BURNER FLAME
BURNER
MANIFOLD
Table 9—Speed Selector
COLOR
SPEED
FACTORY-
ATTACHED TO
Black
High
COOL
Yellow (When
present)
Medium-High
SPARE
Blue
Medium-Low
HEAT
Red
Low
FAN
White
Common
L2
Fig. 19—Amp Draw Check With Ammeter
A96316
R
Y W G
10 TURNS
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AROUND
AMMETER
AMMETER
EXAMPLE:
5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
10 TURNS AROUND JAWS
=
0.5 AMPS FOR THERMOSTAT
ANTICIPATOR SETTING
FROM UNIT 24-V
CONTROL TERMINALS
CONTROL TERMINALS
20