Honeywell RM7897A Installation Instructions Manual page 10

RM7897A,C 7800 SERIES RELAY MODULES
Test Relay
Numbe Module
r Model
1 All None
2 All None
3 All 4-5
4 All 5-10
5 All
6 All 5-8
7 All 5-9
8a RM7897A 5-21
8b RM7897C 5-21
9 All 5-3
Final All
32-00158—03
Table 6. Static Checkout.
Test
Jumper Voltmete
s r
5-L2 Line voltage at terminal 5.
6-L2 Line voltage at terminal 6.
7-L2 1. Burner motor (fan or blower)
starts.
2. Line voltage at terminal 7
within 10 seconds.
— 1. Ignition spark (if ignition
transformer is connected to
terminal 10).
20-L2 Line voltage at Terminal 20
— 1. Ignition spark (if igni-
2. Automatic pilot valve
NOTE: Refer to wiring diagram
— Automatic fuel valve(s) open(s).
If using direct spark ignition,
check first stage fuel valve(s)
instead of pilot valve.
— 1. Ignition spark (if ignition
2.
NOTE: Refer to wiring diagram
— Automatic second stage main
fuel valve(s) open(s).
— Alarm (if used) turns on.
CAUTION
Equipment Damage Hazard.
Can cause equipment damage.
After completing these tests, open master switch and remove all test jumpers from
subbase terminals. Also remove bypass jumpers, if used, from low fuel pressure limits.
Normal Operation
tion transformer is con-
nected to terminal 8).
opens
(if connected to termi-
nal 8).
of system being tested.
connected to terminal
21).
Automated Pilot Valve
opens (if connected to
terminal 21).
of system being tested.
10
If Operation is Abnormal,
Check Items Listed Below
1. Master switch.
2. Power connected to master switch.
3. Overload protection (fuse, circuit
breaker,
etc.) has not opened 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.
Preignition Interlocks.
1. Watch for spark or listen for buzz.
2. Listen for click or feel head of valve for
activation.
a. Actuator if used.
b. Pilot valve.
Same as test 6. If using direct spark
ignition, check first stage fuel valve(s)
instead of pilot valve.
1. Watch for spark or listen for buzz.
2. Listen for click or feel head of valve for
activation.
a. Actuator if used.
b. Pilot valve.
1. Listen for and observe operation of
second stage main fuel valve(s) and
actuator(s).
2. Valve(s) and actuator(s).
1. Alarm.