Product Overview

RM7890; RM7895 100 VAC 7800 SERIES RELAY MODULES
17 66-1195—01
Table 9. Site-Configurable Jumper Options (RM7895).
STATIC CHECKOUT
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
Open the master switch before installing or removing a
jumper on the wiring subbase.
1. Use extreme care when testing the system because line
voltage is present on most terminal connections when
power is on.
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 not operating properly.
Do not bypass limits and interlocks.
4. Close all manual fuel shutoff valves before starting the
tests.
After checking all wiring, perform this checkout before
installing the relay module on the wiring subbase. These tests
verify that the Q7800 Wiring Subbase is wired correctly and
that the external controllers, limits, interlocks, actuators,
valves, transformers, motors and other devices are operating
properly.
CAUTION
Equipment Damage Hazard.
High voltage dielectric test can cause equipment
damage.
Do not perform dielectric test with the relay module
installed. Internal surge protectors break down and
conduct a current, causing dielectric test failure and
destruction of the internal lightning and high current
protection.
Equipment Recommended
1. Voltmeter (one megohm/volt minimum sensitivity), set
on the 0 to 300 Vac scale.
2. Two jumper wires, no. 14 wire, insulated, 12 in. (305
mm) long with insulated alligator clips at both ends. An
ammeter can replace one of the jumper wires when
checking operation of terminals 8, 9, or 10. Verify amp
draw to the device nameplate.
General Instructions
1. Perform all applicable tests listed in Static Checkout,
Tables 10 and 11, in the order listed.
2. Make sure that all manual fuel shutoff valves are closed.
3. Perform only those tests designated for the specific
relay module model being tested.
4. Raise the setpoint of the operating controller to simulate
a call for heat.
5.
For each test, open the master switch and install the
jumper wire(s) between the subbase wiring terminals
listed in the Test Jumpers column of Table 10 or Table 11.
6. Close the master switch before observing operation.
7. Read the voltage between the subbase wiring terminals
listed in the Voltmeter column of Table 10 or 11.
8. If there is no voltage or the operation is abnormal, check
the circuits and external devices as described in the last
column.
9. Check all wiring for correct connections, tight terminal
screws, correct wire size, and proper wiring techniques.
Replace all damaged or incorrectly sized wires.
10. Replace faulty controllers, limits, interlocks, actuators,
valves, transformers, motors and other devices as
required.
11. Obtain normal operation for each required test before
continuing the checkout.
12. After completing each test, be sure to remove the test
jumper(s).
Jumper Number Description Intact Clipped
JR1 Pilot Flame Establishing Period 10 seconds 4 seconds
JR2 Flame Failure Action Recycle Lockout
JR3 Airflow Switch (ILK) Failure Recycle Lockout