Honeywell 7800 Series Installation Instructions Manual page 7

Test Test
No. Jumpers Voltmeter
1 None 5-L2
2 None 18-L2
3 None 17-L2
4 5-16 —
Disconnect alarm or shut off for following tests.
5 5-16 20-L2
6 5-16 6-L2
7 5-16 7-L2
5-4
8 5-10 —
9 5-8 —
10 5-21 —
11 5-9 —
12 4-5 —
13 15-13 18-L2
Final
CAUTION
Electrical Shock Hazard or Equipment Damage Hazard.
Can cause injury or equipment/control damage.
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).
Table 4. EC7820 Static Checkout.
Normal Operation
Line voltage at terminal 5.
Line voltage at terminal 18.
Line voltage at terminal 17.
Alarm (if used and connected to
terminal 16) turns on.
Line voltage at terminal 20.
Line voltage at terminal 6.
0 volts at terminal 7.
Fan starts.
Line voltage at terminal 7.
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).
NOTE: Refer to wiring diagram of
system being tested.
Same as test no. 9 for connections to
terminal 8. If using direct spark
ignition, check the first stage fuel
valve(s) instead of the pilot valve.
Automatic main fuel valve(s) opens. 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.
Raise setpoint of series 90
controller.Firing rate motor should
drive toward open.
Lower setpoint of series 90 controller.
Firing rate motor should drive toward
closed.
NOTE: If damper motor is used, motor
drives open; zero volts at terminal 18
after motor starts driving open.
7
EC7820A 7800 SERIES RELAY MODULES
If Operation is Abnormal, Check
the Items Listed Below
Master Switch.
Power connected to master switch.
3. Overload protection (fuse, circuit
breaker) has not opened the power line
Low Fire Start Switch
Preignition interlocks
Alarm.
Lockout limits.
Limits.
Burner Controller
1. Fan motor circuit.
Manual switch of fan.
Fan motor power supply, overload protection
and starter.
Fan motor.
Airflow switch.
Watch for spark or listen for buzz.
Ignition electrodes are clean.
Ignition transformer is okay.
Watch for spark or listen for buzz.
Ignition electrodes are clean.
Ignition transformer is okay.
Listen for click or feel head of valve for
activation.
Actuator, if used.
Pilot valve.
Same as test no. 9. If using direct spark
ignition, check the first stage fuel valve(s)
instead of the pilot valve.
Listen for and observe operation of the main
fuel valve(s) and actuator(s).
Valve(s) and actuator(s).
Alarm.
Series 90 Controller.
Firing rate motor and transformer.
Low Fire Start Switch.
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