Carrier 58SP0A, Installation, Start-Up, Operating And Service And Maintenance Instructions

Page: 31 / 44

58SP0A/58SP1A: Installation, Start–Up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
31
method to check limit control, it can be established that limit is
functioning properly and will operate if there is a restricted
return-air supply or motor failure. If limit control does not function
during this test, cause must be determined and corrected.
a. Run furnace for at least 5 minutes.
b. Gradually block off return air with a piece of cardboard or sheet
metal until the limit trips.
c. Unblock return air to permit normal circulation.
d. Burners will re-light when furnace cools down.
2. Check draft safeguard switch. The purpose of this control is to
cause the safe shutdown of the furnace during certain blocked vent
conditions.
a. Verify vent pipe is cool to the touch.
b. Disconnect power to furnace and remove vent connector from
furnace vent elbow.
c. Restore power to furnace and set room thermostat above room
temperature.
d. After normal start-up, allow furnace to operate for 2 minutes,
then block vent elbow in furnace 80 percent of vent area with a
piece of flat sheet metal.
e. Furnace should cycle off within 2 minutes. If gas does not shut
off within 2 minutes, determine reason draft safeguard switch did
not function properly and correct condition.
NOTE: Should switch remain open longer than 3 minutes, furnace
control board will lockout the furnace for 3 hours. To reset furnace
control board, turn thermostat below room temperature or from HEAT to
OFF and turn 115-v power OFF, then back ON.
f. Remove blockage from furnace vent elbow.
g. Switch will auto-reset when it cools.
h. Re-install vent connector.
3. Check Pressure Switch(es)
This control proves operation of the draft inducer blower.
a. Turn off 115-v power to furnace.
b. Disconnect inducer motor lead wires from wire harness.
c. Turn on 115-v power to furnace.
d. Set thermostat to “call for heat” and wait 1 minute. When
pressure switch is functioning properly, hot surface igniter
should NOT glow and control diagnostic light flashes a status
code 32. If hot surface igniter glows when inducer motor is
disconnected, shut down furnace immediately.
e. Determine reason pressure switch did not function properly and
correct condition.
f. Turn off 115-v power to furnace.
g. Reconnect inducer motor wires, replace outer door, and turn on
115-v power.
h. Blower will run for 90 seconds before beginning the call for heat
again.
i. Furnace should ignite normally.
Checklist
1. Put away tools and instruments. Clean up debris.
2. Verify that blower OFF-DELAY time is selected as desired.
3. Verify that blower and burner access doors are properly installed.
4. Cycle test furnace with room thermostat.
5. Check operation of accessories per manufacturer’s instructions.
6. Review User’s Guide with owner.
7. Attach literature packet to furnace.
Table 13 – Air Delivery - CFM (With Filter)*
COOLING
4
AND HEATING AIR DELIVERY - CFM (Bottom Return
5
with Filter)
(SW1-5 and SW2-2 set to OFF, except as indicated. See Notes 1 and 2.)
Unit Size: 045V14--12 Clg/CF Switch settings External Static Pressure (ESP)
Clg Switches: SW2-8 SW2-7 SW2-6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Clg Default: OFF OFF OFF 1175 1140 1105 1075 1040 1015 980 945 910 875
Cooling (SW2-8,7,6)
OFF OFF ON 610 560 500 440 380 See Note 4
OFF ON OFF 805 760 720 670 625 575 530 485 See Note 4
OFF ON ON 1010 970 930 895 860 825 785 745 705 665
ON OFF OFF 1175 1140 1105 1075 1040 1015 980 945 910 875
ON OFF ON 1345 1310 1280 1250 1220 1190 1165 1140 1095 1015
ON ON OFF 1480 1435 1395 1350 1310 1265 1220 1185 1115 1015
ON ON ON 1480 1435 1395 1350 1310 1265 1220 1185 1115 1015
Maximum Clg Airflow
2 1480 1435 1395 1350 1310 1265 1220 1185 1115 1015
CF Switches SW2-5 SW2-4 SW2-3 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Low-Clg Default: OFF OFF OFF 610 560 500 440 380 See Note 4
Low-Cooling (SW2-5,4,3)
OFF OFF ON 610 560 500 440 380 See Note 4
OFF ON OFF 805 760 720 670 625 575 530 485 See Note 4
OFF ON ON 1010 970 930 895 860 825 785 745 705 665
ON OFF OFF 1175 1140 1105 1075 1040 1015 980 945 910 875
ON OFF ON 1345 1310 1280 1250 1220 1190 1165 1140 1095 1015
ON ON OFF 1480 1435 1395 1350 1310 1265 1220 1185 1115 1015
ON ON ON 1480 1435 1395 1350 1310 1265 1220 1185 1115 1015
Cont. Fan Default: OFF OFF OFF 610 560 500 440 380 See Note 4
Continuous Fan (SW2-5,4,3)
OFF OFF ON 610 560 500 440 380 See Note 4
OFF ON OFF 805 760 720 670 625 575 530 485 See Note 4
OFF ON ON 1010 970 930 895 860 825 785 745 705 665
ON OFF OFF 1010 970 930 895 860 825 785 745 705 665
ON OFF ON 1010 970 930 895 860 825 785 745 705 665
ON ON OFF 1010 970 930 895 860 825 785 745 705 665
ON ON ON 1010 970 930 895 860 825 785 745 705 665
Heating (SW1)
Heat Airflow
3
870 825 785 745 700 655 615 570 530 480