Honeywell 7800 Series Installation Instructions Manual page 12

RM7845A 7800 SERIES RELAY MODULES
5. For each test, open the master switch and install the
jumper wire(s) between the subbase wiring terminals
listed in the Test Jumpers column.
6. Close the master switch before observing operation.
7. Read the voltage between the subbase wiring terminals
listed in the Voltmeter column.
8. If there is no voltage or the operation is abnormal, check
the circuits and external devices as described in the last
column.
9. Check all wiring for correct connections, tight terminal
screws, correct wire, and proper wiring techniques.
Replace all damaged or incorrectly sized wires.
10. Replace faulty controllers, limits, interlocks, actuators,
valves, transformers, motors and other devices as
required.
Test RM7845A
No. Models Jumpers Voltmeter
1 All None
2
3
4 4-5
5 All 4-8
6 4-9
7 4-3
8 4-5
and
12-13
9 4-5
and
14-13
10 4-5
and
12-13
11 4-5
and
14-13
661147—1
Table 8. Static Checkout.
Test
4-L2 Line voltage at Terminal 4.
6-L2 Line voltage at Terminal 6.
20-L2 Line voltage at Terminal 20.
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 8).
2. Automatic pilot valve opens (if
connected to Terminal 8).
NOTE: Refer to wiring diagram of
— Automatic main fuel valve(s) open.
If using direct spark ignition on a
model with intermittent pilot on
Terminal 21, check the optional
second stage fuel valve, if used.
— Alarm (if used) turns on.
18-L2 Firing rate motor drives open; zero
volts at Terminal 18 after motor
starts driving open.
18-L2 Firing rate motor drives closed; line
voltage at Terminal 18 after motor
is in Low Fire position.
19-L2 Firing rate motor drives open; line
voltage at Terminal 19 after motor
is in High Fire position.
19-L2 Firing rate motor drives closed;
zero volts at Terminal 19 after
motor starts driving closed.
11. Make sure normal operation is obtained for each
required test before continuing the checkout.
12. After completing each test, be sure to remove the test
jumper(s).
WARNING
Explosion Hazard.
Can cause serious injury or death.
Make sure all manual fuel shutoff valves are closed
before performing static checkout.
Normal Operation
system being tested.
12
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,
etc.) has not opened the power line.
1. Limits.
2. Burner Controller.
1. Preignition interlocks.
1. Burner motor circuit.
a. Manual switch of burner motor.
b. Burner motor power supply, overload
protection, and starter.
c. Burner motor.
2. Running or Lockout Interlocks (including
Airflow Switch).
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.
1. Listen for and observe operation of the
main
fuel valve(s) and actuator(s).
2. Valve(s) and actuator(s).
1. Alarm.
1. Low Fire Start Switch.
2. Firing rate motor and transformer.
1. Low Fire Start Switch.
2. Firing rate motor and transformer.
1. High Fire Purge Switch.
2. Firing rate motor and transformer.
1. Low Fire Start Switch.
2. Firing rate motor and transformer.