Operation - Honeywell 7800 Series Installation Instructions Manual

ASSEMBLY
Assembly instructions for the RM7896D1027 are identical
to those in 32-00156.

OPERATION

The RM7896D1027 has the following status LEDs:
• POWER • PILOT • PURGE • MAIN • ALARM
POWER LED provides fault identification when the
RM7896D1027 locks out on an alarm. Fault identification
is a series of fast and slow blinking LED lights. The fast
blinks identify the tens portion of the fault code (three fast
blinks is 30) while the slow blinks identify the units portion
of the fault code (two slow blinks is 2). Three fast blinks
followed by two slow blinks would be fault code 32. This
identifies a running interlock on during STANDBY. (See
Table 3 for Blinking Fault Code list.)
The LED code repeats as long as the fault exists. To clear
the fault, press the RESET button.
See Fig. 5 for the RM7896D1027 operating sequence.
CHECKOUT
Static Checkout
WARNING
Electrical Shock Hazard and Equipment Damage
Hazard.
Can cause serious injury, death or equipment
damage.
Line voltage is present on most terminal
connections when power is on. Use extreme care
when testing the system. Close all manual fuel
shutoff valve(s) before starting these tests.
1. Open the master switch before installing or
removing a jumper on the subbase.
2. Before continuing to the next test, remove all
test jumpers used in the previous test(s).
3. Replace all limits and interlocks not operating
properly. Do not bypass limits and interlocks.
After checking all wiring, perform this checkout before
installing the RM7896D1027 on the subbase. These tests
verify that the Q7800 Wiring Subbase is wired correctly
and that all external controllers, limits, interlocks,
actuators, valves, transformers, motors and other devices
are operating properly.
7800 SERIES RM7896D RELAY MODULE
CAUTION
Equipment Damage Hazard.
Dielectric test can seriously damage equipment.
Do not perform a dielectric test with the
RM7896D1027 installed. Internal surge protectors
will break down and conduct current. This can
cause the RM7896D1027 to fail the dielectric test
or destroy the internal lightning and high current
transient protection components.
Equipment Recommended
1. Voltmeter (1M ohm/volt minimum sensitivity) set
on the 0 to 300 Vac range.
2. Two jumper wires; no. 14 wire, insulated,
12 inches (305 mm) long, with insulated alligator
clips at both ends.
General Instructions
1. Perform all applicable tests in Table 2, Static Check-
out, in the order listed.
2. Make sure that all manual fuel shutoff valves are
closed.
3. Raise the setpoint of the operating controller to sim-
ulate a call for heat.
4. 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 of Table 2.
5. Close the master switch before observing operation.
6. Read the voltage between the subbase wiring termi-
nals listed in the Voltmeter column of Table 2.
7. If there is no voltage or the operation is abnormal,
check the circuits and external devices described in
the last column of Table 2.
8. Check all wiring for correct connections, tight termi-
nal screws, correct wire, and proper wiring tech-
niques. Replace all damaged or incorrectly sized
wires.
9. Replace faulty controllers, limits, interlocks, actua-
tors, valves, transformers, motors and other devices
as required.
10. Obtain normal operation for each required test
before continuing the checkout.
11. After completing each test, be sure to remove the
test jumper(s).
The remainder of the RM7896D1027 checkout is the
same as provided in form 32-00156.
5 32-00208-01