R7824, R7847, R7848, R7849, R7851, R7852, R7861, R7886 AMPLIFIERS FOR 7800 SERIES AND R7140 RELAY MODULES
65-0109—14
4
Table 2. Flame Detection Systems.
a
Flame Failure Response Time (FFRT) depends on selection of amplifier and 7800 SERIES and R7140 Relay Module.
b
R7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E,F Flame Detectors.
c
Circuitry 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.
d
Circuitry tests flame signal amplifier 12 times a minute during burner operation and shuts down burner if amplifier fails.
e
200/220/240 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.
f
Use 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.
g
R7847A,B Amplifiers with 0.8/1 second FFRT should
NOT
be used with C7012A,C Solid State Ultraviolet Detectors.
h
R7824C 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.
i
Order 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)
a
Fuel
Type
Models
Rectification Green
Dymanic Self-
Check
R7824C
b,c,h
3
Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7024E,F
No
R7847A
g
0.8/1 or 2/3 Gas
Rectifying Flame Rod
Holders
i
C7004, C7007, C7011
Complete Assemblies:
C7008, C7009, Q179
No
R7847A
g
2/3
Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7012A,C.
Dynamic Ampli-
Check®
R7847B
d,g
0.8/1 or
2/3
Gas
Rectifying Flame Rod
Holders
i
C7004, C7007, C7011
Complete Assemblies:
C7008, C7009, Q179
Dynamic Ampli-
Check®
R7847B
d,g
2/3 Gas,
oil,
coal
Ultraviolet (Purple
Peeper®)
C7012A,C
Dynamic Self
Check
R7847C
c,h
3
Gas, oil,
coal
Ultraviolet (Purple
Peeper®)
C7012E,F
Infrared
Red
No
R7848A
2/3
Gas, oil,
coal
Infrared (Lead
Sulfide)
C7015
Dynamic Ampli-
Check®
R7848B
d
2/3
Gas, oil,
coal
Infrared (Lead
Sulfide)
C7015
Red/
White
No
R7852A
2/3
Gas, oil,
coal
Infrared (Lead
Sulfide)
C7915
Dynamic Ampli-
Check®
R7852B
b
2/3
Gas, oil,
coal
Infrared (Lead
Sulfide)
C7915
Ultraviolet
Purple No
R7849A
0.8/1 or
2/3
Gas, oil Ultraviolet
(Minipeeper)
C7027, C7035, C7044
f
Dynamic Ampli-
Check®
R7849B
d
0.8/1 or
2/3
Gas, oil Ultraviolet
(Minipeeper)
C7027, C7035, C7044
f
Dynamic Self-
Check
R7861A
c,e
0.8/1 or
2/3
Gas, oil,
coal
Ultraviolet
C7061
Blue
Dynamic Self-
Check
R7886A
c,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
R7851C
c
2/3
Gas, oil,
coal
Optical (UV only)
C7961
