RM7840E,G,L,M
SPECIFICATIONS
3 65-0087—2
ENVIRONMENTAL RATINGS:
Ambient Temperature:
Operating: -40° F to 140° F.
Storage: -40° F to 150° F.
Humidity: 85% RH continuous, noncondensing.
Vibration: 0.5G environment.
DIMENSIONS: Refer to Figs. 1 and 2.
WEIGHT: RM7840 with Dust Cover: 1 pound 13 ounces,
unpacked.
IMPORTANT: Flame Detection System available for
use with RM7840. To select your Plug-in Flame
Signal Amplifier and matching Flame Detector, see
Table 2.
TABLE 2—FLAME DETECTION SYSTEMS (Figs. 3, 4, 5)
Plug-in Flame Signal Amplifiers Applicable Flame Detectors
Flame
Failure
Self- Response
Type Color Checking Model Time Fuel Type Models
Rectification Green No R7847A .8 or 3 sec Gas Rectifying C7004,
Flame Rod C7007,
Holders
d
C7011.
CompleteAssemblies:
C7008, C7009, Q179.
No R7847A .8 or 3 sec Oil Rectifying C7003, C7010,
Photocell C7013, C7014.
e
No R7847A 3 sec Gas, oil, Ultraviolet C7012A,C.
a
coal (PurplePeeper)
Dynamic R7847B
c
.8 or 3 sec Gas Rectifying C7004, C7007,
AMPLI- Flame Rod C7011.
CHECK™ Holders
d
Complete Assemblies:
C7008, C7009, Q179.
Dynamic R7847B
c
.8 or 3 sec Oil Rectifying C7003, C7010,
AMPLI- Photocell C7013, C7014.
e
CHECK™
Dynamic R7847B
c
3 sec Gas, oil, Ultraviolet C7012A,C.
a
AMPLI- coal (Purple
CHECK™ Peeper)
Dynamic R7847C
b
3 sec Gas, oil, Ultraviolet C7012E,F.
Self- coal (Purple
Check Peeper)
Infrared Red No R7848A 3 sec Gas, oil, Infrared C7015.
coal (Lead Sulfide)
Dynamic R7848B
c
3 sec Gas, oil Infrared C7015.
AMPLI- coal (Lead Sulfide)
CHECK™
Ultraviolet Purple No R7849A .8 or 3 sec Gas, oil Ultraviolet C7027, C7035,
(Minipeeper) C7044.
a
Dynamic R7849B
c
.8 or 3 sec Gas, oil Ultrviolet C7027, C7035,
AMPLI- (Minipeeper) C7044.
a
CHECK™
Blue Dynamic R7886A
b
3 sec Gas, oil, Ultraviolet C7076.
Self- coal (Adjustable
Check Sensitivity)
a
The C7012A,C, C7027, C7035 and C7044 flame detectors should be used only on burners that cycle on-off at least
once every twenty-four hours. Appliances with burners that remain on for twenty-four hours continuously or longer
should use the C7012E,F Flame Detector with the R7847C Amplifier or the C7076A Flame Detector with the
R7886A Amplifier as the ultraviolet flame detection system.
b
Circuitry tests all electronic components in the flame detection system (amplifier and detector) 12 times a minute
during burner operation and shuts down the burner if the detection system fails.
c
Circuitry tests the flame signal amplifier at least 12 times a minute during burner operation and shuts down the
burner if the amplifier fails.
d
Order flame rod separately; see holder Instructions.
e
Use only Honeywell Photocell, part no. 38316.
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