Burnham ES2 ES2 Installation & Service Instructions Manual page 31

POWER
L2
SUPPLY
L1
120/60/1
L1
L2
MAIN EXTRA
END END
N/O COM N/C
SWITCH SWITCH
ZONE 4 RELAY
DHW
CIRCULATOR
(SUPPLIED BY
OTHERS)
SYSTEM
CIRCULATOR
(SUPPLIED BY OTHERS) (SUPPLIED BY OTHERS)
WIRING USED WHEN DOMESTIC WIRING USED WHEN DOMESTIC
HOT WATER PRIORITY NOT DESIRED HOT WATER PRIORITY IS DESIRED
INteRNAL WIRING (continued)
THERMOSTAT THERMOSTAT THERMOSTAT
24V
TRANSFORMER
MODE
NORMAL RESET
POWER IN
T T
ZONE 1
FOUR ZONE ZONE VALVE CONTROL
MAIN EXTRA
ZONE 1
END END
N/O COM N/C
SWITCH SWITCH
1 2 3 4
ZONE 4 RELAY
JUMPER
3 & 4
2 WIRE ZONE
DHW
VALVE
(NO END SWITCH) (NO END SWITCH)
CIRCULATOR
(SUPPLIED BY
OTHERS)
SYSTEM
CIRCULATOR
Figure IW-: Multiple Zone System with Zone Valve Panel
DHW AQUASTAT
(L4006, L4080)
(SUPPLIED BY OTHERS)
ZONE 4 PRIORITY
T T T T T T
ZONE 2 ZONE 3 ZONE 4
TACO ZVC 404 (OR EQIV.)
WITH OPTIONAL PRIORITY
ZONE 2 ZONE 3 ZONE 4
1 2 3 4 1 2 3 4 1 2 3 4
JUMPER
3 & 4
PRIORITY
1
ZONE
2
3
2 WIRE ZONE 4 WIRE ZONE
VALVE
VALVE
(POWER OPEN,
SELF CLOSING)
LINE VOLTAGE FACTORY WIRING SIZE 14 AWG TYPE TW OR TEW/AWM WIRE
LINE VOLTAGE FIELD WIRING
DOMESTIC HOT WATER PRIORITY IS
SELECTED USING ZONE PANEL SWITCH
OFF
IQ OPTION PANEL
ON
T STAT 1
5
1
VALVE 1
6
2
T STAT 2
7
3
VALVE 2 8
T STAT 3
VALVE 3
T STAT 4
VALVE 4
POWER
1 2 3 T T
BOILER JACKET
PANEL
1
2
3
4
31