R7824, R7847, R7848, R7849, R7851, R7852, R7861, R7886 AMPLIFIERS FOR 7800 SERIES AND R7140 RELAY MODULES
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Table 2. Flame Detection Systems.
aFlame Failure Response Time (FFRT) depends on selection of amplifier and 7800 SERIES and R7140 Relay Module.
bR7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E,F Flame Detectors.
cCircuitry tests all electronic components in flame detection system (amplifier and detector) 12 times a minute during burner oper-
ation and shuts down burner if detection system fails.
dCircuitry tests flame signal amplifier 12 times a minute during burner operation and shuts down burner if amplifier fails.
e200/220/240 Vac applications require a 120 Vac, 10 VA minimum stepdown transformer (not provided) to drive the shutter. Applies
to R7886A series 2 or greater; R7861 series 1 or greater. Fig. 2 shows flame detector wiring.
fUse C7027, C7035 and C7044 Flame Detectors only on burners that cycle on-off at least once every twenty-four hours. Use
C7061A Ultraviolet Detector with R7861A Amplifier or C7076A Flame Detector with R7886A Amplifier as ultraviolet flame detec-
tion system for appliances with burners that remain on continuously for twenty-four hours or longer.
gR7847A,B Amplifiers with 0.8/1 second FFRT should NOT be used with C7012A,C Solid State Ultraviolet Detectors.
hR7824C Series 2 and greater and R7847C Series 4 or greater, check flame detector system when flame reaches 1.5 Vdc or at
4.5 seconds, whichever occurs first.
NOTE: R7824C Series 2 or greater and R7847C Series 4 or greater, pulse the shutter when signal of 1.5 Vdc is sensed. Display
readings of 0.7 to 2.4 Vdc are common.
iOrder flame rod separately; see flame detector Instructions for holder.
Plug-in Flame Signal Amplifiers Applicable Flame Detectors
Type Color Self-Checking Model
Flame
Failure
Response
Time (sec)aFuel Type Models
Rectification Green Dymanic Self-
Check R7824Cb,c,h 3Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7024E,F
No R7847Ag0.8/1 or 2/3 Gas Rectifying Flame Rod
Holdersi
C7004, C7007, C7011
Complete Assemblies:
C7008, C7009, Q179
No R7847Ag2/3 Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7012A,C.
Dynamic Ampli-
Check® R7847Bd,g 0.8/1 or
2/3
Gas Rectifying Flame Rod
Holdersi
C7004, C7007, C7011
Complete Assemblies:
C7008, C7009, Q179
Dynamic Ampli-
Check® R7847Bd,g 2/3 Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7012A,C
Dynamic Self
Check R7847Cc,h 3Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7012E,F
Infrared Red No R7848A 2/3 Gas, oil,
coal
Infrared (Lead
Sulfide)
C7015
Dynamic Ampli-
Check® R7848Bd2/3 Gas, oil,
coal
Infrared (Lead
Sulfide)
C7015
Red/
White
No R7852A 2/3 Gas, oil,
coal
Infrared (Lead
Sulfide)
C7915
Dynamic Ampli-
Check® R7852Bb2/3 Gas, oil,
coal
Infrared (Lead
Sulfide)
C7915
Ultraviolet Purple No R7849A 0.8/1 or
2/3
Gas, oil Ultraviolet
(Minipeeper) C7027, C7035, C7044f
Dynamic Ampli-
Check® R7849Bd0.8/1 or
2/3
Gas, oil Ultraviolet
(Minipeeper) C7027, C7035, C7044f
Dynamic Self-
Check R7861Ac,e 0.8/1 or
2/3
Gas, oil,
coal
Ultraviolet C7061
Blue Dynamic Self-
Check R7886Ac,e 2/3 Gas, oil,
coal
Ultraviolet (Adjustable
Sensitivity)
C7076
Optical White Dymanic Ampli-
Check®
R7851B 0.8/1 or 2/3 Gas, oil,
coal
Optical (UV, Visible
Light)
C7927, C7962
Dynamic Self-
Check R7851Cc2/3 Gas, oil,
coal
Optical (UV only) C7961