7800 SERIES EC7890A,B/RM7890A,B RELAY MODULE
65-0204–1
4
Table 2. Flame Detection Systems.
a
A 0.8 sec Flame Failure Response Time Amplifier is required when the Relight option is (JR2 is intact, see Table 3). The RM7890
will lock out and indicates a Fault 46 when a 3.0 second FFRT is used and jumper JR2 (Lockout) is not clipped and removed.
b
Order flame rod separately; see holder Instructions.
c
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 continuously for twenty-four hours or longer should use the
C7012E,F Flame Detector with the R7847C Amplifier or the C7076A,D Flame Detector with the R7886A Amplifier or the C7061
Flame Detector with the R7861 Amplifier as the ultraviolet flame detection system.
d
Use with EC7890B or RM7890B only.
e
Circuitry tests the flame signal amplifier at least 12 times a minute during burner operation and shuts down the burner if the
amplifier fails.
f
Use
only Honeywell Photocell, part no. 38316.
g
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.
h
When an R7861A is used with an EC7890B, the application requires the use of a step-down transformer. See Fig. 14.
Plug-in Flame Signal Amplifiers
Applicable Flame Detectors
Type
Color
Self-Checking
Model
Flame
Failure
Response
Time
a
Fuel
Type
Models
Rectification
Green
No
R7847A
.8 or 3 sec
Gas
Rectifying Flame
Rod Holders
b
C7004, C7007, C7011.
Complete Assemblies:
C7008, C7009, Q179.
No
R7847A
.8 or 3 sec
Oil
Rectifying
Photocell
C7003, C7010, C7013,
C7014.
No
R7847A
3 sec
Gas, oil,
coal
Ultraviolet
(PurplePeeper)
C7012A,C.
c,d
Dynamic
Ampli-Check®
R7847B
e
.8 or 3 sec
Gas
Rectifying Flame
Rod Holders
b
C7004, C7007, C7011.
Complete Assemblies:
C7008, C7009, Q179.
Dynamic
Ampli-Check®
R7847B
e
.8 or 3 sec
Oil
Rectifying
Photocell
f
C7003, C7010, C7013,
C7014.
Dynamic
Ampli-Check®
R7847B
e
3 sec
Gas, oil,
coal
Ultraviolet
(Purple Peeper)
C7012A,C.
c
Dynamic
Self-Check
d
R7847C
g
3 sec
Gas, oil,
coal
Ultraviolet
(Purple Peeper)
C7012E,F.
Infrared
Red
No
R7848A
3 sec
Gas, oil,
coal
Infrared
(Lead Sulfide)
C7015.
Dynamic
Ampli-Check®
R7848B
e
3 sec
Gas, oil
coal
Infrared
(Lead Sulfide)
C7015.
Ultraviolet
Purple
No
R7849A
.8 or 3 sec
Gas, oil
Ultraviolet
(Minipeeper)
C7027, C7035, C7044.
c
Dynamic
Ampli-Check®
R7849B
e
.8 or 3 sec
Gas, oil
Ultraviolet
(Minipeeper)
C7027, C7035, C7044.
c
Dynamic
Self-Check
d,h
R7861A
3 sec
Gas, oil,
coal
Ultraviolet
C7061.
Blue
Dynamic
Self-Check
d
R7886A
g
3 sec
Gas, oil,
coal
Ultraviolet
(Adjustable
Sensitivity)
C7076.
