Carrier 160 Series - Page 35

Start-Up Procedures
CE UA Le:
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
. Never purge a gas line into a combustion chamber. Never
Q) test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection
| of leaks to check all connections. A fire or explosion may
\ BURNER result causing property damage, personal injury or loss of
i | ORIFICE life.
posose
4
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, or death.
Fig. 50 - Orifice Hole
58CV
Blower access door switch opens 115-v power to control.
No component operation can occur unless switch is closed.
Caution must be taken when manually closing this switch
for service purposes.
THERMOSTAT SUBBASE : 7 :
TERMINALS WITH 1. Purge gas lines after all connections have been made.
THERMOSTAT REMOVED 2. Check gas lines for leaks.
3
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT,) . To Begin Component Self-Test:
Remove Blower Access Door. Disconnect the thermostat
HOOK-AROUND R lead from furnace control board. Manually close blower
AMMETER door switch. Turn Setup DIP switch SW1-6 ON. (See Fig.
26, 53 and Table 10.)
NOTE: The furnace control allows ail components, except the
gas valve, to be run for short period of time. This feature helps
diagnose a system problem in case of a component failure.
Component test feature will not operate if any thermostat signal is
present at the control.
Refer to service label attached to furnace or See Fig. 52.
Component test sequence is as follows:
a. Inducer motor starts on high-speed and continues to
run until Step d. of component test sequence.
b. Hot surface igniter is energized for 15 sec., then off.
N c. Blower motor operates for 15 sec.
EROM UNIT 24-V d. Inducer motor goes to low-speed for 10 sec., then
CONTROL TERMINALS stops.
e. After component test is completed, one or more status
codes (11, 25, or 41) will flash. See component test
section of service label (Fig. 52) in furnace for explan-
ation of status codes.
EXAMPLE: 5:0: AMPS ON AMMETER _ _ 0.5 AMPS FOR THERMOSTAT
‘ 4OTURNS AROUND JAWS ~ ANTICIPATOR SETTING
Ag6316
Fig. 51 - Amp. Draw Check with Ammeter NOTE: To repeat component test, turn setup switch SW1-6
OFF, then back ON.
4. Turn setup DIP switch SW1-6 OFF. Reconnect R lead to
furnace control board, release blower door switch and re-
install blower access door.
5. Operate furnace per instruction on inner door.
6. Verify furnace shut down by lowering thermostat setting
below room temperature.
7. Verity furnace restarts by raising thermostat setting above
room temperature.