V4043, V4044 VALVES; V8043, V8044 ZONE VALVES
7 95-6983—11
Fig. 15. Typical 4-zone system. Use an additional W775A to power up to 4 more zone valves.
Fig. 16. Typical 5-zone system. Use an AT87A transformer to power up to 5 more zone valves.
How to Replace a Taco 3-Wire Valve with
a Honeywell 2-Wire Valve
Fig. 17. Existing Taco System. (Wires are identified by
letters for easy correspondence to wires on Figs. 18 &
19.)
Fig. 18. Wiring a Honeywell V8043E to a Taco System.
(Wires are identified by letters for easy
correspondence to wires on Fig. 17.)
M5980
ZONE 1
ZONE 2
ZONE 3
ZONE 4
END SWITCH
V8043F
TH-TR TH
TR
END SWITCH
V8043F
TH-TR TH
TR
END SWITCH
V8043F
TH-TR TH
TR
END SWITCH
V8043F
TH-TR TH
TR
ZONE 1
ZONE 2
ZONE 3
ZONE 4
T87F
INTEGRAL
TRANSFORMER
TO
CIRCULATOR
CONTROL
CIRCUIT
W775A PANEL
B
R
B
W
BR
B
R
B
W
BR
B
R
B
W
BR
B
R
B
W
BR
T87F
L1
(HOT)
L2
POWER
SUPPLY
B
R
B
W
BR
RED
RED
YELLOW
ZONE V8043E
YELLOW
W775A PANEL
RED
YELLOW
RED
YELLOW
T87F
T87F
CONNECTIONS FOR V8043E
(LEADWIRE MODEL)
ZONE 1
T87F
ZONE 2
ZONE 3
ZONE 4
ZONE 5
V8043F
END SWITCH
TH-TR
TH
TR
V8043F
END SWITCH
TH-TR
TH
TR
V8043F
END SWITCH
TH-TR
TH
TR
V8043E V8043E
T87F T87F T87F T87F
M10164
YELLOW
RED
YELLOW
RED
YELLOW
RED
YELLOW
RED
L1
(HOT)
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
TO BURNER
AND / OR
CIRCULATOR
CIRCUIT
AT87A
TRANSFORMER
NOTE: IF CODE PERMITS, V8043E AND V8043F CAN BE USED INTERCHANGEABLY WHEN WIRED AS SHOWN.
L1
(HOT)
L2
1
A
B
C
D
E
1
2
3
THERMOSTAT
TACO VALVE
TO AUXILIARY
CIRCUITS
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M5958
L1
(HOT)
L2
1
C
A
B
D
THERMOSTAT
V8043E
TO
AUXILIARY
CIRCUITS
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M10163
YELLOW
YELLOW
RED
RED
E
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