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WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury
or death.
Close all manual fuel shutoff valve(s) before
starting these tests.
Use extreme care while testing the system. Line
voltage is present on most terminal connections
when power is on.
Ensure proper selection of configuration jumpers before
starting the burner operation.
CAUTION
Electrical Hazard.
Can cause equipment damage or failure.
Do not perform a dielectric test with the relay
module installed. Internal surge protectors can
break down, allowing relay module to fail the
dielectric test and destroy the internal lightning
and high current protection.
1. Open the master switch before installing or remov-
ing a jumper on the subbase.
2. Before continuing to the next test, be sure to remove
the test jumper(s) used in the previous test.
3. Replace all limits and interlocks that are not operat-
ing properly. Do not bypass limits and interlocks.
Equipment Recommended
1. Voltmeter (1M ohm/volt minimum sensitivity) set on
the 0 to 300 Vac scale.
2. Two jumper wires, no. 14 wire, insulated, 12 in.
(304.8 mm) long with insulated alligator clips at
both ends.
General Instructions
1. Perform all applicable tests listed in Static Checkout,
Table 6, in the order listed.
2. Make sure all manual fuel shutoff valve(s) are
closed.
3. For each test, open the master switch and install the
jumper wire(s) between the subbase wiring termi-
nals listed in the Test Jumpers column.
4. Close the master switch before observing operation.
5. Read the voltage between the subbase wiring termi-
nals listed in the Voltmeter column.
RM7897A,C 7800 SERIES RELAY MODULES
6. If there is no voltage or the operation is abnormal,
check the circuits and external devices as described
in the last column.
7. Check all wiring for correct connections, tight termi-
nal screws, correct wire, and proper wiring tech-
niques. Replace all damaged or incorrectly sized
wires.
8. Replace faulty controllers, limits, interlocks, actua-
tors, valves, transformers, motors and other devices,
as required.
9. Make sure normal operation is obtained for each
required test before continuing the checkout.
10. After completing each test, be sure to open the
master power switch and remove the test jumper(s)
before proceeding to the next test.
WARNING
Explosion hazard.
Can cause serious injury or death.
Be sure all manual fuel shutoff valves are closed.
Mounting RM7897A,C Relay
Module
1. Mount the RM7897A,C vertically on the Q7800
Subbase or mount horizontally with the knife blade
terminals pointing down. When mounted on the
Q7800A, the RM7897A,C must be in an electrical
enclosure.
2. When mounting in an electrical enclosure, provide
adequate clearance for servicing, installation and
removal of the RM7897A,C, KDM, flame amplifier,
flame amplifier signal voltage probes, electrical
signal voltage probes and electrical connections.
e. Allow an optional three-inch (76 mm) minimum
on both sides of the RM7897A,C for electrical
signal voltage probes.
3. Make sure no subbase wiring is projecting beyond
the terminal blocks. Tuck in wiring against the back
of the subbase so it does not interfere with the knife
blade terminals or bifurcated contacts.
IMPORTANT
The RM7897A,C, must be installed with a plug-in
motion rather than a hinge action.
4. Mount the RM7897A,C by aligning the four L-
shaped corner guides and knife blade terminals with
the bifurcated contacts on the wiring subbase and
securely tightening the two screws without
deforming the plastic.
9
32-00158—03
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