Honeywell RA889A User Manual page 5

RA889A
RELAY R(T)
L1 L2
L1
PUMP
(HOT)
1
L2
G L2 L1 T
2
C1 C2
B2
L7148A/L8148A
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
2
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED.
3
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 3. RA889A hookup for L7148A/L8148A in an oil-fired, tankless hot water, zoned, pump system.
R(T) W(T)
L1 L2
L1
PUMP
(HOT)
1
L2
G L2 L1 T T
2
C1 C2 B2 B1
L7148F/L8148E
Fig. 4. RA889A hookup for L7148F/L8148E in a gas-fired, 24V, zoned, pump system.
T87F
W(T)
COM N.O. X1 X2 L1
T
3
C554
B1
T87F
RA889A RELAY
R(T)
N.O. X1 X2 L1
COM
PUMP
TR
LOW VOLTAGE
3
GAS VALVE
THTR
(eg, VR8300)
TH
5
T87F
RA889A
R(T) W(T)
L2 COM N.O. X1 X2
PUMP
ORANGE
F
WHITE
F
BLACK
T
T
R8184G
T87F
RA889A
W(T)
L2 COM N.O. X1 X2
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND.
2
USE GROUNDING SCREW PROVIDED.
B1 IS 1/4 IN. TAB TERMINAL.
3
RA889A SWITCHING RELAY
T87F
RA889A
R(T) W(T)
L1 L2 COM N.O. X1 X2
PUMP
BURNER
AND
IGNITION
M14301
T87F
RA889A
R(T) W(T)
L1 L2 X1 X2
COM N.O.
PUMP
M13314
68-0216—2