Honeywell 7800 Series Manual page 5

Plug-In Flame Signal Amplifiers
Type Color Self-Checking
Rectification Green No
No
No
Dynamic
Amplicheck™
Dynamic
Amplicheck™
Dynamic
Amplicheck™
Dynamic
Self-Check
Infrared Red No
Dynamic
Amplicheck™
Ultraviolet Purple No
Dynamic
Amplicheck™
Blue Dynamic
Self-Check
a
Order flame rod separately; see holder instructions.
b
Use only Honeywell Photocell, part number 38316.
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.
c
CAUTION: Ultraviolet radiation sensing tubes have a life expectancy of 40,000 hours of continuous use within the flame
detector's specified ambient temperature and voltage ratings. A worn-out ultraviolet radiation sensing tube results in failure
of the UV sensor to properly discriminate between flame conditions.
The C7012A,C, the C7027A, C7035A and C7044A Flame Detectors should only be used on burners that cycle on/off
periodically or, in the absence of cycling, are periodically checked for proper operation.
Recommended industry standards for the frequency of sensor checks, either through cycling (employing safe-start check
methods) or periodic maintenance, vary between once every ten seconds and once every week, depending on the standard
used and the application needs.
Consult the equipment manufacturer or the governing standard for recommendations about frequency of checks.
Controls that incorporate safe-start checks, and sensors with controls that employ constant checking means are available
from Honeywell. See your Honeywell representative for specific information.
d
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.
TABLE 2—FLAME DETECTION SYSTEMS (FIGS. 4, 5, 6).
Response
Model
R7847A 0.8 or 3 sec Gas
R7847A 0.8 or 3 sec Oil
R7847A 3 sec
d
R7847B 0.8 or 3 sec Gas
d
R7847B 0.8 or 3 sec Oil
d
R7847B 3 sec
e
R7847C 3 sec
R7848A 3 sec
b
R7848B 3 sec
R7849A 0.8 or 3 sec Gas, oil
d
R7849B 0.8 or 3 sec Gas, oil
e
R7886 3 sec
Applicable Flame Detectors
Flame
Failure
Time Fuel
Rectifying
Flame Rod
Holders
Rectifying
Photocell
Gas, oil, Ultraviolet
coal (Purple Peeper)
Rectifying
Flame Rod
Holders
Rectifying
Photocell
Gas, oil, Ultraviolet
coal (Purple Peeper)
Gas, oil, Ultraviolet
coal (Purple Peeper)
Gas, oil, Infrared (Lead
coal Sulfide)
Gas, oil, Infrared (Lead
coal Sulfide)
Ultraviolet
(Minipeeper)
Ultraviolet
(Minipeeper)
Gas, oil, Ultraviolet
coal (Adjustable
sensitivity)
5
SPECIFICATIONS
Type Models
C7004, C7007,
C7011, Complete
a
Assemblies: C7008,
C7009, Q179.
C7003, C7010,
b
C7013, C7014.
c
C7012A,C
C7004, C7007,
C7011. Complete
a
Assemblies: C7008,
C7009, Q179.
C7003, C7010,
C7013, C7014.
c
C7012A,C .
C7012E,F.
C7015.
C7015.
C7027, C7035,
c
C7044 .
C7027, C7035,
c
C7044 .
C7076A, D.
65-0175
RM7888A