L
N
G
T T
ZR
ZC
outdoor!
temperature!
sensor
boiler!
reset!
controller
6 Zone
Z6V
THM 2
C
R
W
T
T COM
COMMS
D
P
DHW
ZR/ZC
X X
THM 3
C
R
W
T
T COM
THM 1
C
R
W
T
T COM
L
POWER IN
N
THM 4
C
R
W
T
T COM
THM 5
C
R
W
T
T COM
THM 6
C
R
W
T
T COM
PWR
THM1 ZONE1
THM2 ZONE2
THM3 ZONE3
THM4 ZONE4
THM5 ZONE5
THM6 ZONE6
L
PRIORITY
PUMP
N
L
SEC PUMP
N
SYSTEM
PUMP
STATUS
DURING
PRIORITY
ZONE 1
END
SWITCH
MOTOR
PRIORITY
ZONE 2
END
SWITCH
MOTOR
ZONE 3
END
SWITCH
MOTOR
ZONE 4
END
SWITCH
MOTOR
ZONE 5
END
SWITCH
MOTOR
ZONE 6
END
SWITCH
MOTOR
Master/Slave
space heating thermostats
DHW!
aquastat
space
heating
demand
domestic water
heating demand
SYSTEM!
pump
L N G
ZV1
ZV2
ZV4
ZV5
ZV6
ZV3
set to ON
indirect DHW tank
DHW!
aquastat
VENT
low flow resistance boiler
ZV1
ZV2
ZV4
ZV5
ZV6
ZV3
SYSTEM!
pump
ZRV106
Noncondensing boiler with
outdoor reset and indirect DHW