Honeywell 7800 SERIES Manual page 18

RM7890A,B,C
STATIC CHECKOUT
Test RM7890
No. Models
WARNING
!
Make sure all manual fuel shutoff valves are closed.
IMPORTANT: Low fuel pressure limits, if used, could be open. Bypass them with jumpers for the remaining Static
tests (if required).
1 All
2 All
3 All
4 All
5 All
6 All
Final All
65-0126—2
TABLE 5—STATIC CHECKOUT.
Test
Jumpers Voltmeter
None 3-L2 Line voltage at terminal 3.
None 6-L2 Line voltage at terminal 6.
3-10 — Ignition spark (if ignition
transformer is connected to
terminal 10).
3-8 — 1. Ignition spark (if ignition
2. Automatic pilot valve opens
NOTE: Refer to wiring diagram
3-9 — Automatic fuel valve(s) opens. If
using direct spark ignition, check
the first stage fuel valve(s)
instead of the pilot valve.
3-4 — Alarm (if used) turns on.
CAUTION
!
After completing these tests, open the master switch and remove all test jumpers from the
subbase terminals. Also remove bypass jumpers from the low fuel pressure limits (if used).
Normal Operation
transformer is connected to
terminal 8).
(if connected to terminal 8).
of system being tested.
18
If Operation Is Abnormal,
Check The Items Listed Below
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. 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. Listen for click or feel head
of valve for activation.
a. Actuator if used.
b. Pilot valve.
Same as test no. 5. If using direct
spark ignition, check the first
stage fuel valve(s) instead of the
pilot valve.
1. Alarm