Beckett GeniSys 7505A Description / Applications page 6

Typical Boiler Wiring:
Figure 2 – 7505A
Intermittent ignition, no valve-on delay,
►
no motor-off delay
BOILER CONTROL
L1 T
L1
L2
L2 T
B2 B1
IGNITER
MOTOR
CAD CELL
Figure 3 – 7505A
Interrupted ignition, no valve-on or
►
motor-off delay
BOILER CONTROL
L1 T
L1
L2
L2
T
B2 B1
IGNITER
MOTOR
CAD CELL
6
(for replacement of R8184G)
W
R
THERMOSTAT
IGNITER
L2 (IGN)
MOTOR
L2 (MTR)
LIMIT
L1
LIMIT
TR-TW
JUMPER
L2
VALVE TR
L2 (VLV)
TW
TR-TW Terminals
Located on
CAD TR-TW TERMINALS
opposite side of
LOCATED ON OPPOSITE
CELL
Control
SIDE OF CONTROL
(If applicable)
(for replacement of R7184A)
W
R
THERMOSTAT
IGNITER
L2 (IGN)
MOTOR
L2 (MTR)
LIMIT
L1
LIMIT
TR-TW
JUMPER
L2
TR
VALVE
L2 (VLV)
TW
TR-TW Terminals
Located on
CAD TR-TW TERMINALS
opposite side of
LOCATED ON OPPOSITE
CELL
Control
SIDE OF CONTROL
(If applicable)
Figure 4 – 7505B
Interrupted ignition, valve-on delay only
►
(no motor-off delay)
BOILER CONTROL
L1
L1 T
L2
L2 T
B2 B1
IGNITER
MOTOR
OIL VALVE
CAD CELL
Figure 5 – 7505P
Interrupted ignition, valve-on and motor-
►
off delays
BOILER CONTROL
L1 T
L1
L2
L2 T
B2 B1
IGNITER
MOTOR
OIL VALVE
CAD CELL
NOTE: To disable motor-off delay on a 7505P control,
jumper L1 and limit together and wire as shown in Fig. 4.
(for replacement of R7184B)
W
R
THERMOSTAT
IGNITER
L2 (IGN)
MOTOR
L2 (MTR)
LIMIT
L1
LIMIT
TR-TW
JUMPER
L2
TR
VALVE
L2 (VLV)
TW
TR-TW Terminals
CAD Located on TR-TW TERMINALS
opposite side of
LOCATED ON OPPOSITE
CELL
Control
SIDE OF CONTROL
(If applicable)
(for replacement of R7184P)
W
R
THERMOSTAT
IGNITER
L2 (IGN)
MOTOR
L2 (MTR)
L1
LIMIT
TR-TW
JUMPER
L2
TR
VALVE
L2 (VLV)
TW
TR-TW Terminals
Located on
CAD TR-TW TERMINALS
opposite side of
LOCATED ON OPPOSITE
CELL
Control
SIDE OF CONTROL
(If applicable)