Instruction manual

42
A INSTALLATION INSTRUCTIONS
Figure 32a - Wiring diagram for taco
zone valvesFigure 31a - Taco zone valves
Figure 32b - Wiring diagram for zone
valves
Thermostat
zone 1
Thermostat
zone 2
115V 24V
External
transformer
1
2
3
1
2
3
Taco zone valves
COSMOGAS
Combi
Thermostat
N
L
115V 24V
External
transformer
Heating
thermostat
zone 1
Heating
thermostat
zone 2
N
L
COSMOGAS
Combi
Thermostat
1
2
3
1
2
3
Heating
zone
valve 1
Heating
zone
valve 2
End
switch
Motor
Zone valve 1
Room
thermostat
zone 1
End
switch
Motor
Zone valve 2
Room
thermostat
zone 2
End
switch
Motor
Zone valve 3
Room
thermostat
zone 3
Thermostat
24V 115V
115VAC
N
L
COSMOGAS
Combi
External
transformer
Figure 31b - Honeywell controls and
circulators
T87F
thermostat
T87F
thermostat
T87F
thermostat
115VAC
TT 12 TT 12
65 43 65 43 65 43
R-845 R-845 R-845
TT 12
External
pump
External
pump
External
Wiring schematic
useing circulators
and R-845 relays
for multi zone
system
115VAC
Thermostat
COSMOGAS
combi
L
N