Greenheck 7800 Series Relay Modules - Manual (Page 8)

8
RM7895A,B,C,D/EC7895A,C; RM7896A,B,C,D 7800 SERIES RELAY MODULES
66-1090—2
Table 5. Composition of each Combination.
A B C D F
4.5A ignition 50 VA Pilot Duty plus 4.5A ignition. 180 VA Ignition plus
motor valves with:
660 VA inrush,
360 VA open,
240 VA hold.
2A Pilot Duty 65 VA Pilot Duty plus
motor valves with:
3850 VA inrush,
700 VA open,
250 VA hold.
STATIC CHECKOUT
After checking all wiring, perform this checkout before
installing the EC7895A,C/RM7895A,B,C,D/RM7896A,B,C,D
on the subbase. These tests verify the Q7800 Wiring
Subbase is wired correctly, and the external controllers, limits,
interlocks, actuators, valves, transformers, motors and other
devices are operating properly.
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 removing 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 operating
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 terminals
listed in the Test Jumpers column.
4. Close the master switch before observing operation.
5. Read the voltage between the subbase wiring terminals
listed in the Voltmeter column.
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 terminal
screws, correct wire, and proper wiring techniques.
Replace all damaged or incorrectly sized wires.
8. Replace faulty controllers, limits, interlocks, actuators,
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.