Submittal Sheet

L8148A,E,J AQUASTAT® RELAYS
9 60-2278—9
Fig. 9. Wiring L8148E in a gas-fired, 24V, forced hot water, no tankless, zoned, pump system.
Fig. 10. Wiring L8148E in multizone system with R845 switched circulator.
TT
1
23
4
5
6
TT
1
23
4
5
6
TT
1
23
4
5
6
GL2L1 T T
C1 C2
B2 B1
L1
(HOT)
L2
PUMP PUMP PUMP
T87F T87F T87F
R845 RELAY
R845 R845
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND.
USE GROUNDING SCREW PROVIDED.
B1 IS 1/4 IN. TAB TERMINAL.
1
2
3
3
L8148E
2
1
M1620A
LOW VOLTAGE
GAS VALVE
(eg, VR8300)
TR
TH
THTR
L1
(HOT)
L2
1
2
3
1
2
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
CONTROL CASE MUST BE CONNECTED TO EARTH
GROUND. USE GROUNDING SCREW PROVIDED.
B1 IS 1/4 IN. TAB TERMINALS.
M8888
TV
T
W
Z
B1
B2
C1
C2
L1
L2
G
24V
THERMOSTAT
CIRCULATOR
ZONE 1
L8148E
2
1
4
3
5
6
R845A RELAY ZONE 1
TO ADDITIONAL R845A
RELAYS FOR OTHER ZONES
LOW VOLTAGE
GAS VALVE
(VR8300)
TR
TH
THTR