Honeywell 7800 SERIES

RM7888A 7800 SERIES RELAY MODULE
32-00214—01 18
Fig. 18. Flame signal amplifier mounting.
Installing the Flame Detector (Fig.
19)
NOTE: Table 4 lists the flame detection systems avail-
able for use with the RM7888A. Make sure the
correct combination of amplifier and flame detec-
tor(s) is used.
Proper flame detector installation is the basis of a safe
and reliable flame safeguard installation. Refer to the
instructions packed with the flame detector and the
equipment manufacturer instructions.
Keep the flame signal leadwires as short as possible from
the flame detector to the wiring subbase. Capacitance
increases with leadwire length, decreasing the signal
strength. The maximum permissible leadwire length
depends on the type of flame detector, leadwire and
conduit. The ultimate limiting factor in the flame signal is
the flame detector leadwire.
Fig. 19. Flame detector wiring.
BLUE
YELLOW
WHITE
WHITE
BLACK
BLACK
F
G
22
L2
L1
L2
M1969C
BLUE
WHITE
F
G
BLUE
WHITE
F
G
INFRARED (C7915)
ULTRAVIOLET (C7027/C7035/C7044)
SOLID STATE SELF-CHECKING
ULTRAVIOLET (C7012E,F)
BLUE
YELLOW
BLACK
BLACK
F
G
L1
L2
SOLID STATE
ULTRAVIOLET (C7012A,C)
1
2
2
F G
4
5
3
L2
C7076A,D ULTRAVIOLET DETECTOR
5
22
6
SHUTTER
G
SHUTTER
F
1
8
2
7
7800 SERIES
L1
L2
3a
3b
REMOTE
SENSOR
2b
2a
EARTH
GROUND
C7076A
OR
C7076D
TERMINAL
BLOCK
L2 (COMMON)
L1 (HOT)
G
F
X
X
FLAME ROD
G
F
X
X
PHOTOCELL
1
FLAME DETECTOR LEADS ARE COLOR CODED. THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE WHITE
MUST BE CONNECTED TO THE G TERMINAL. THE UV SENSING TUBE IS POLARITY SENSITIVE. REVERSING THE LEADS EVEN
MOMENTARILY CAN DAMAGE OR DESTROY THE UV TUBE.
FLAME DETECTOR LEADS ARE COLOR CODED. THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE YELLOW
MUST BE CONNECTED TO THE G TERMINAL. THE UV SENSING TUBE IS POLARITY SENSITIVE. REVERSING THE LEADS EVEN
MOMENTARILY CAN DAMAGE OR DESTROY THE UV TUBE.
2