When a module is configured as non-redundant and uses a redundant IOTA, ensure that the lower slot is kept empty or if a module is plugged into the bottom slot, make sure that the module MUST be powered off.
Preliminary Inspection
Make certain that:
1. Wiring connections are correct and all terminal screws
and electrical connections are tight.
2. Proper flame failure response time is selected.
3. Amplifier is securely mounted on the 7800 SERIES
Relay Module.
4. Detectors are properly positioned and cleaned
according to Detector Instructions.
5. Correct combination of amplifier and flame detector is
used.
Flame Signal Measurement (Fig. 4)
Flame signal can be measured at the Flame Signal Test
Jacks, see Fig. 4, and at the Keyboard Display Module.
Measure the flame signal at the appropriate times defined in
the Checkout section; see applicable 7800 SERIES Relay
Module Instructions. See Table 3 for acceptable and
maximum flame signal voltage strengths.
CAUTION
Equipment Damage Hazard.
Improper wiring can destroy ultraviolet sensing
tube.
Carefully follow polarity sensitive wiring instructions for
the C7027, C7035, C7044, C7012, C7024, C7061,
C7961 and C7076. Reversing the leadwires, even
momentarily, can destroy the ultraviolet sensing tube.
Fig. 4. Flame signal measurement with meter.
1. Connect blue leadwire from detector to terminal F and
white leadwire from C7027/C7035/C7044/C7061 to
terminal G.
2. Connect blue leadwire from detector to terminal F and
yellow leadwire from C7012/C7024/C7961 to terminal
G.
3. Follow lightoff Instructions for applicable 7800 SERIES
Relay Module.
Measuring Flame Signal With Keyboard
Display Module
Consult Instructions for applicable 7800 SERIES Relay
Module or Keyboard Display Module.
