20
Pump 1
6 Zone
T-STAT 2
C
R
W
T
T COM
COMMS
D
P
DHW
ZR/ZC
X X
T-STAT 3
C
R
W
T
T COM
T-STAT 1
C
R
W
T
T COM
L
PUMP 2
N
PRIMARY
PUMP
L
PRIORITY
PUMP 1
N
L
POWER IN
N
GROUNDS
L
PUMP 3
N
TRANSFORMER
L
N
T-STAT 4
C
R
W
T
T COM
L
PUMP 4
N
L
PUMP 5
N
L
PUMP 6
N
T-STAT 5
C
R
W
T
T COM
T-STAT 6
C
R
W
T
T COM
PWR
ZONE1
ZONE2
ZONE3
ZONE4
ZONE5
ZONE6
DipSwitches
Master
Slave
Priority OFF
Priority ON
Primary OFF
Primary ON
Exercise OFF
Exercise ON
Post Purge OFF
Post Purge ON
ZSR106
L
N
Pump 2
Pump 3
Primary pump
boiler pump
Primary pump
boiler pump
3
3
B3 - Mod/Con boiler, primary loop, closely spaced tees, zone pumps
Hydronic diagram is for illustration purposes only, some components have been removed for simplicity.