Carrier WEATHERMAKER 8000 58WAV Manual Do Proprietário
c. Inducer motor starts and continues to run for entire com-
ponent test.
d. Hot surface igniter is energized for 15 sec, then de-
energized.
e. Blower motor operates on FAN speed for 10 sec, then
stops.
f. Blower motor operates on HEAT speed for 10 sec, then
stops.
g. Blower motor operates on COOL speed for 10 sec, then
stops
h. Inducer motor stops
3. To operate furnace, follow procedures on operating instruc-
tions label attached to furnace.
4. With furnace operating, set thermostat below room tempera-
ture and observe that furnace goes off. Set thermostat above
room temperature and observe that furnace restarts.
room temperature and observe that furnace restarts.
ADJUSTMENTS
1. Set gas input rate
Furnace gas input rate on furnace rating plate is for installa-
tions at altitudes up to 2000 ft. Furnace input rate must be
within
tions at altitudes up to 2000 ft. Furnace input rate must be
within
±
2 percent of input on furnace rating plate.
a. Determine natural gas orifice size and manifold pressure
for correct input.
(1.) Obtain average yearly gas heat value (at installed
altitude) from local gas supplier.
(2.) Obtain average yearly specific gas gravity from local
gas supplier.
(3.) Verify furnace model. Table 6 can only be used for
model 58WAV Furnaces.
(4.) Find installation altitude in Table 6.
NOTE:
For Canada altitudes of 2000 to 4500 ft, use U.S.A.
altitudes of 2001 to 3000 ft in Table 6.
(5.) Find closest natural gas heat value and specific gravity
in Table 6.
(6.) Follow heat value and specific gravity lines to point of
intersection to find orifice size and manifold pressure
settings for proper operation .
settings for proper operation .
EXAMPLE: (0—2000 ft altitude)
Heating value = 1025 Btu/cu ft
Specific gravity = 0.62
Therefore: Orifice No. 43*
Heating value = 1025 Btu/cu ft
Specific gravity = 0.62
Therefore: Orifice No. 43*
Manifold pressure 3.3-in. wc
* Furnace is shipped with No. 43 orifices. In this example
all main burner orifices are the correct size and do not need
to be changed to obtain proper input rate.
all main burner orifices are the correct size and do not need
to be changed to obtain proper input rate.
(7.) Check and verify burner orifice size in furnace.
NEVER
ASSUME
ORIFICE
SIZE.
ALWAYS
CHECK AND VERIFY.
b. Adjust manifold pressure to obtain input rate.
(1.) Remove regulator adjustment seal cap. (See Fig. 17.)
(2.) Turn adjusting screw, counterclockwise (out) to de-
crease manifold pressure or clockwise (in) to increase
manifold pressure.
manifold pressure.
NOTE:
This furnace has been approved for a manifold pressure
of 3.2-in. wc to 3.8-in. wc when installed at altitudes up to 2000 ft.
For altitudes above 2000 ft, the manifold pressure can be adjusted
from 2.0-in. wc to 3.8-in. wc.
For altitudes above 2000 ft, the manifold pressure can be adjusted
from 2.0-in. wc to 3.8-in. wc.
DO NOT bottom out gas valve regulator adjusting screw.
This can result in unregulated manifold pressure and result in
excess overtire and heat exchanger failures.
This can result in unregulated manifold pressure and result in
excess overtire and heat exchanger failures.
NOTE:
If orifice hole appears damaged or it is suspected to have
been redrilled, check orifice hole with a numbered drill bit of
correct size. Never redrill an orifice. A burr-free and squarely
aligned orifice hole is essential for proper flame characteristics.
correct size. Never redrill an orifice. A burr-free and squarely
aligned orifice hole is essential for proper flame characteristics.
(3.) After correct manifold pressure is obtained, replace
gas valve regulator adjustment screw cap and verify
adjusted gas input rate using method outlined in item
c.
adjusted gas input rate using method outlined in item
c.
(4.) Burner flame should be clear blue, almost transparent.
(See Fig. 18.)
c. Verify natural gas input rate by clocking gas meter.
NOTE:
High-Altitude Adjustment
United States
At installation altitudes above 2000 ft, this furnace has been
approved for a 4 percent derate for each 1000 ft above sea level.
See Table 7 for derate multiplier factor.
approved for a 4 percent derate for each 1000 ft above sea level.
See Table 7 for derate multiplier factor.
EXAMPLE:
88,000 Btuh input furnace installed at 4300 ft.
88,000 Btuh input furnace installed at 4300 ft.
Furnace Input
Rate at
Sea Level
X
Derate
Multiplier
Factor
=
Furnace Input Rate
at Installation Altitude
88,000
X
0.82
=
72,160
Canada
At installation altitudes from 2000 to 4500 ft, this furnace must be
derated 10 percent by an authorized Gas Conversion Station. To
determine correct input rate for altitude, see example above and
use 0.90 as derate multiplier factor.
derated 10 percent by an authorized Gas Conversion Station. To
determine correct input rate for altitude, see example above and
use 0.90 as derate multiplier factor.
a. Turn off all other gas appliances and pilots.
DO NOT redrill orifices. Improper drilling (burrs, out-of-
round holes, etc.) can cause excessive burner noise and
misdirection of burner flames. This can result in flame
impingement of burners and heat exchangers, causing fail-
ures.
round holes, etc.) can cause excessive burner noise and
misdirection of burner flames. This can result in flame
impingement of burners and heat exchangers, causing fail-
ures.
A93059
BURNER
ORIFICE
16