General Instructions - Honeywell R7120M 7800 Serie Instructions D'installation

R7120M 7800 SERIES RELAY MODULES
A
4.5A ignition
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 the R7120M
Relay Module.
2. Replace all limits and interlocks that are not operating
properly. Do not bypass limits and interlocks.

General Instructions

1. Perform all applicable tests listed in System Checkout,
beginning on page 15, 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.
66-1193EF—01
Table 5. Composition of each Combination.
B
50 VA Pilot Duty plus 180 VA Ignition plus
4.5A ignition. motor valves with:
660 VA inrush,
360 VA open,
240 VA hold.
C
2A Pilot Duty
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.
Installing the R7120M Relay Module
1. Make sure no subbase wiring is projecting beyond the
terminal blocks. Route wiring against the back of the
subbase so it does not interfere with engagement of the
subbase terminals into the controller base.
2. Install the provided ground wire between the Fireye
terminal S1 and the wiring subbase ground screw.
3. Install the adapter plate from the R7120M.
a. Align the holes of the adapter plate with the tapped
holes of the existing wiring base.
b. Install two screws (1/4 in. long 8-32 flathead Phillips
provided) through the adapter plate holes into the
tapped holes of the wiring base.
c. Tighten the two screws securely.
4. Position the R7120 control to the adapter plate, gently
press the control onto the subbase to engage the
terminal blades and secure with the two captivated
mounting screws at the corners of the R7120M control
housing. Tighten the mounting screws enough to seat
the R7120 to the adapter plate but DO NOT
OVERTIGHTEN.
5. If installed in an electrical panel, be sure there is
adequate clearance behind the closed door of the panel
so there is no interference with the R7120.
Mounting Other System Components
Refer to the applicable specifications for mounting other
system components.
Setup of Post Purge (if required)
An S7800A1142, Keyboard Display Module (KDM), is
required for the setup of the R7120M Post Purge Timing, and
must be purchased separately. Follow the directions provided
in the display instruction sheet (form number 65-0288).
6
D F
65 VA Pilot Duty plus
motor valves with:
3850 VA inrush,
700 VA open,
250 VA hold.