5
60-2034—7
RA890F
INSTALLATION
IMPORTANT: Do not run high voltage ignition transformer
wires in the same conduit with the flame detector
wiring.
IMPORTANT: When connecting wire to screw terminal of
terminal strip, wrap wire at least 3/4 of distance
around screw without overlapping. With appropri-
ately sized screwdriver, tighten screw until wire is
snugly in contact with underside of screw and contact
plate. Tighten screw additional one-half turn. Do not
use a push-type ratchet screwdriver.
Fig. 3—Gas system with interrupted ignition.
M8752
L1
(HOT)
L2
1
2
3
4
5
6
7
5
5
4
2
6
3
1
7
FOR INTERMITTENT IGNITION, CONNECT TO TERMINAL 3.
IF LINE VOLTAGE CONTROLLER IS USED, CONNECT IT BETWEEN
THE LIMIT CONTROLLER AND TERMINAL 6. JUMPER T-T.
HOOKUP FOR CONTINUOUS (STANDING) PILOT IS THE SAME AS
FOR INTERRUPTED IGNITION EXCEPT IGNITION AND PILOT
VALVE CONNECTIONS ARE NOT MADE.
SPDT ALARM TERMINALS OPTIONAL. IF LINE VOLTAGE IS USED,
RA890F MUST BE MOUNTED IN SUITABLE ENCLOSURE. ALARM
TERMINALS ARE ENERGIZED THROUGH RA890 SAFETY SWITCH.
ALARM WILL NOT SOUND UNTIL SAFETY SWITCH TRIPS OUT.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FOR RA890E REPLACEMENT, LEAVE POWER CONNECTED TO
TERMINAL 1. SUBBASE WIRING CHANGES ARE NOT REQUIRED.
SOME AUTHORITIES HAVING JURISDICTION PROHIBIT THE WIRING
OF ANY LIMIT OR OPERATING CONTACTS IN SERIES WITH THE MAIN
FUEL VALVES (S).
LIMIT
CONTROLLER
MAIN FUEL
VALVE(S)
IGNITION
PILOT VALVE
LOW VOLTAGE
CONTROLLER
6
T
T
F
G
2
2
1
3
4
5
LINE OR
LOW VOLTAGE
NO ALARM
NC
NO
COM
USE TERMINALS
NC AND C FOR
NORMALLY CLOSED
ALARM INDICATOR
OR INTERLOCK
CIRCUIT IF DESIRED.
LINE OR LOW
VOLTAGE ALARM
POWER SUPPLY
POWER SUPPLY
RA890F
TO FLAME
DETECTOR
(FLAME ROD OR
UV DETECTOR)
Fig. 2—Flame detector wiring.
M8717
YES
NO
NO
NO
NO
HOOKUP
RA890E Replacement
When replacing an RA890E with an RA890F, no changes
are required in the wiring to the subbase. Leave the hot line
connected to terminal 1 even though it is not required to
operate the control.
M8730
BLUE
YELLOW
BLACK
BLACK
F
G
C7012 ULTRAVIOLET DETECTOR
G
F
X
X
X
X
FLAME ROD
G
F
X
X
PHOTOCELL
POWER
SUPPLY
TYPICAL FLAME DETECTOR CONNECTIONS