Honeywell DVD Recorder L Benutzerhandbuch

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26

After checking all wiring, perform this checkout before 

installing the R7140 on the subbase. These tests verify the 

Q520A Wiring Subbase is wired correctly, and the external 

controllers, limits, interlocks, actuators, valves, transformers, 

motors and other devices are operating properly.

1. Close all manual fuel shutoff valve(s) before starting 

these tests.

2. Use extreme care while testing the system. Line 

voltage is present on most terminal connections 

when power is on.

3. Open the master switch before installing or 

removing a jumper on the subbase.

4. Before continuing to the next test, be sure to 

remove test jumper(s) used in the previous test.

5. Replace all limits and interlocks that are not operating 

properly. Do not bypass limits and interlocks.

Internal surge protectors can break down and conduct 

a current, causing the R7140 to fail the dielectric test 

or possibly destroy the internal lightning and high 

current protection. Do not perform a dielectric test with 

the R7140 installed.

1. Voltmeter (1M ohm/volt minimum sensitivity) set on the 

0-300 Vac scale.

2. Two jumper wires; no. 14 wire, insulated, 12 inches 

(304.8 mm) long with insulated alligator clips at both ends.

3. When jumpered to Ignition, Pilot and Main Valves, use 

ammeter in series and verify proper current draw.

1. Perform all applicable tests listed in Static Checkout, 

Table 8, in the order listed.

2. Make sure all manual fuel shutoff valve(s) are closed.

3. Perform only those tests designated for the specific 

R7140 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.

6. Close the master switch before observing operation.

7. Read the voltage between the subbase wiring terminals 

listed in the Voltmeter column.

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, 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. Make sure normal operation is obtained for each 

required test before continuing the checkout.

12. After completing each test, be sure to remove the test 

jumper(s).

Make sure all manual fuel shutoff valves are closed 

before performing static checkout.

1

All

None

L1-L2

Line voltage at terminal L1.

1. Master Switch.

2. Power connected to the Master Switch.

3. Overload protection (fuse, circuit breaker, 

etc.) has not opened the power line.

2

16-L2

Line voltage at terminal 16 (4 on 

Pre-Ignition Interlock devices).

1. Limits.

2. Burner Controller.

3

4-L2

Line voltage at terminal 16.

1. Pre-Ignition interlocks.

4

L1-8

3-L2

1. Burner motor (fan or

    blower) starts.

2. Line voltage at terminal 3

    within 10 seconds.

1. Burner motor circuit.

a. Manual switch of burner motor.

b. Burner motor power supply, overload 

protection, and starter.

c. Burner motor.

2. Running or Lockout Interlocks (including 

Airflow Switch).

5

L1-18

—

Ignition spark (if ignition 

transformer is connected to 

terminal 18).

1. Watch for spark or listen for buzz.

a. Ignition electrodes are clean.

b. Ignition transformer is okay.