Checkout - Honeywell 7800 Series Installation Instructions Manual

Test Number Test Jumpers
WARNING
Explosion Hazard.
Can cause severe injury, death or property damage.
Make sure that all manual fuel shutoff valves are closed.
IMPORTANT
Low pressure fuel limits, if used, could be open. Bypass them with jumpers for the remaining static tests, if required.
1 None
2 None
3 4 to 5
a
4 5 to 10
a
5 5 to 8
a
6 5 to 9
7 5 to 3
Final
CAUTION
Equipment Damage Hazard.
Incorrect wiring can damage equipment.
After completing these tests, open the Master Switch and remove all test jumpers from the subbase
terminals. Also remove the bypass jumpers from the low fuel pressure limits (if used).
a
Use an ammeter in place of the jumper wire to verify current draw of the terminal loads. Do not exceed ratings shown in Tables 3 and 4.

CHECKOUT

WARNING
Explosion Hazard.
Can cause severe injury, death or property damage.
Do not allow fuel to accumulate in the combustion
chamber. If fuel is allowed to enter the chamber for
longer than a few seconds, an explosive mixture could
result.
Table 12. RM7895 Static Checkout.
Voltmeter Normal Operation
5 to L2 Line voltage at terminal 3.
6 to L2 Line voltage at terminal 6.
7 to L2 Burner motor (fan or blower)
starts.
Line voltage at terminal 7 within
10 seconds.
— Ignition spark (if ignition
transformer is connected to
terminal 10).
— Ignition spark (if ignition
transformer is connected to
terminal 8).
Automatic pilot valve opens (if
connected to terminal 8).
Refer to wiring diagram of
system being tested.
— Automatic fuel valve(s) opens. If
using direct spark ignition,
check the first stage fuel
valve(s) instead of the pilot
valve.
— Alarm, if used, turns on.
If Operation is Abnormal, Check the Items
1 . Master Switch.
2 . Power connected to the Master Switch.
3 . Overload protection (fuse, circuit breaker)
has not opened the power line.
1 . Limits.
2 . Burner controller.
1 . Burner motor circuit.
a . Manual switch of burner motor.
b . Burner motor power supply, overload
protection and starter.
c . Burner motor.
1 . Watch for spark or listen for buzz.
a . Ignition electrodes are clean.
b . Ignition transformer is okay.
1 . Watch for spark or listen for buzz.
a . Ignition electrodes are clean.
b . Ignition transformer is okay.
2 . List for click or feel head of valve for acti-
vation.
a . Actuator, if used.
b . Pilot valve.
3 . Same as test number 5. If using direct
spark ignition, check the first stage fuel
valve(s) instead of the pilot valve.
Alarm.
Limit the trial for pilot to ten seconds, and limit the attempt
to light the main burner to two seconds from the time the fuel
reaches the burner nozzle. Do not exceed the nominal ligh-
toff time specified by the equipment manufacturer. Close the
manual fuel shutoff valve(s) if the flame is not burning at the
end of the specified time.
19
RM7890, RM7895 100 Vac
Listed Below
32-00216-01