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ZONE 1
THERMOSTAT
V8043F
TH
TH
TH
TR
TR
TR
2
T
Z
TV
1K
R
W
B
LOW LIMIT/
CIRCULATOR
B
1K2
HIGH
LIMIT
R
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
UP TO TWO V8043F ZONE VALVES CAN BE POWERED WITH
2
L8124G,L. ADD ADDITIONAL TRANSFORMER FOR EVERY
TWO OR LESS VALVES.
3
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND.
USE GROUNDING SCREW PROVIDED.
4
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 7. L8124 multizone system with zone valve
connections and internal schematic.
ZONE 2
THERMOSTAT
V8043F
TH
TR
L8124G,L
3
G
L1
1
(HOT)
L2 1
2
1K1
ZR
ZC
LINE VOLTAGE
OIL BURNER
RELAY OR
GAS VALVE
4
B1
B2
C2
C1
LINE VOLTAGE
CIRCULATOR
M1795B
L8124A,C,E,L AND M AQUASTAT® RELAYS
1
L1
(HOT)
L2
2
G
L2
L1
C1 C2
CIRCULATOR
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
2
CONTROL CASE MUST BE CONNECTED TO EARTH GROUND.
USE GROUNDING SCREW PROVIDED.
3
B1 IS 1/4 IN. TAB TERMINAL.
Fig. 8. L8124E in a 24Vac, gas-fired,
forced hot water, tankless system.
5
T87F
L8124E
T
T
3
B2
B1
TH
TR
LOW VOLTAGE
GAS VALVE
(eg, VR8300)
M1796A
95-6571—11
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