Honeywell 7800 Series Installation Instructions Manual page 14

RM7890, RM7895 100 Vac
Proper flame detector installation is the basis of a safe and
reliable flame safeguard installation. Refer to the instructions
packed with the flame detector and the equipment manufac-
turer instructions.
Keep the flame signal leadwires as short as possible from the
flame detector to the wiring subbase. Capacitance increas-
es with leadwire length, reducing the signal strength. The
maximum permissible leadwire length depends on the type
of flame detector, leadwire and conduit. The ultimate limiting
factor in the flame detector leadwire is the flame signal. See
Table 10.
Fig. 10. Dust cover mounting.
Fig. 8. Electrical panel installation.
Fig. 11. ST7800 Purge Card installation (RM7895 only).
Fig. 9. Wall or burner installation.
Fig. 12. Flame signal amplifier mounting.
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