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7800 SERIES RM7824A RELAY MODULE
65-0155—1
13
Table 5. Static Checkout
(Continued).
Test No.
RM7824A
Models
Test
Jumpers Voltmeter Normal Operation
If Operation is Abnormal, Check
the Item Listed Below
4All 3-8 — 1. Ignition spark (if ignition
transformer relay is
connected to terminal 8).
2. Automatic pilot valve
opens (if connected to
terminal 8).
NOTE: Refer to wiring
diagram of system
being tested.
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.
5All 3-9 — Automatic fuel valve(s)
opens.
If using direct spark ignition,
check the first stage fuel
valve(s) instead of the pilot
valve.
Same as test no. 4. If using direct
spark ignition, check the first stage
fuel valve(s) instead of the pilot
valve.
6All 3-4 — Alarm (if used) turns on. 1. Alarm.
Final All
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).
CHECKOUT
WARNING
Do not allow fuel to accumulate in the combustion
chamber. If fuel is allowed to enter the chamber for
longer than a few seconds without igniting, an
explosive mixture could result. It is recommended that
you 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 has reached the burner nozzle. In
any case, do not exceed the nominal lightoff time
specified by the equipment manufacturer. Close the
manual shutoff valve(s) if the flame is not burning at
the end of the specified time.
CAUTION
1. Use extreme care while testing the system. Voltage
is present on most terminal connections when
power is on.
2. Open the master switch before removing or
installing the RM7824A.
3. Make sure all manual fuel shutoff valve(s) are
closed before starting the initial lightoff check and
the Pilot Turndown tests.
4. Do not put the system in service until you have
satisfactorily completed all applicable tests in this
section and any others required by the equipment
manufacturer.
CAUTION
If an RM7824A is replaced with a lower or higher
functioning 7800 SERIES Relay Module, the burner
will not sequence unless wiring changes are made.
IMPORTANT
1. If the system fails to perform properly, refer to
7800 SERIES System Annunciation Diagnostics
and Troubleshooting, form 65-0118.
2. Repeat ALL required Checkout tests after all
adjustments are made. ALL tests must be
satisfied with the flame detector(s) in its FINAL
position.
Equipment Required
Volt-ohmmeter (20K ohm/volt minimum sensitivity):
• 0-6000 ohm capability.
• 0-30 Vdc capability.
Checkout Summary
• Preliminary inspection—all installations.
• Flame signal measurement—all installations.
• Initial lightoff check for proved pilot—all installations using
a pilot.
• Initial lightoff check for direct spark ignition of oil—all
burners using DSI.
• Pilot turndown test—all installations using a pilot.