Honeywell DBC2000 Series - FLAME DETECTION SYSTEM DETAILS; Ultraviolet Flame Detectors; Flame Rod Detector Information

ENI7003R8 KO65 2013
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Table 4: Flame detection systems
Detector
type
Flame detector model no.
Max. lead wire
lengths
Standard stable flame
current on jack plug
UV detector C7027A, C7035A, C7044A < 100m 4µA (min)
14µA (max)
Flame rod Flame rod or rectifying optical sensors,
C7012A,G (UV) or IRD1020.1 (IR)
< 15m 14µA (min)*
4µA (max)*
* When using a flame rod, the current on the flame jack plug is inverted. See also Fig 4-2.
Flame detector leads are colour coded. The blue lead wire must be connected to the F terminal (T23) and the
white lead wire to the G terminal (T24). The UV sensing tube is polarity sensitive. Reversing the lead wires
even momentarily will destroy the UV sensing tube.