Hydro-Temp VVV - Page 19

Installation Manual 5.1.2
19
9.9.2 ZS Thermostat Wiring
The ZS thermostats are used for zones two - four. The
ZS thermostats are to be wired in series (daisy chain)
with each other and require the
address for each zone to be set
on the thermostat. The address
number is always the same as the
zone number. For example zone
2 will be addressed 2, zone 3 will
be addressed 3 and zone 4 will be
address 4. There are 4 Address
dipswitches on the back of the ZS
thermostat. Dipswitch one has a
value of 1, dipswitch 2 has a
value of 2, dipswitch 3 has a
value of 4 and dipswitch 4 has a
value of 8. Turn on the
dipswitches as needed to add up
to the value of the zone you’re installing the ZS into.
Refer to Fig. 9.9.2 for zone thermostat dipswitch
settings.
A 4 position terminal strip labeled “ZS Stat” is provided
in the electrical box to wire the zone 2 ZS thermostat to.
This terminal strip has a second label indicating wire
termination labeled the same as the wire termination
on the ZS t-stat. Simply connect “+12V” from the ZS
stat to “+12V” on the terminal strip, “RNET-“ from the
ZS stat to “RNET-“ on the terminal strip, “RNET+“ from
the ZS stat to “RNET+“ on the terminal strip and “GND“
from the ZS stat to “GND“ on the terminal strip. Next
the zone 3 ZS thermostat will wire to the zone 2 ZS
thermostat. Then the zone 4 ZS thermostat will wire to
the zone 3 ZS thermostat. This will complete the daisy
chain connection as shown in fig 9.9.2.1.
It’s important to note the ZS thermostat is powered by
12 vdc, always wire to the correct terminal strip
provided and labeled in the electrical box.
4
3
2
1
1
2
4
8
4
3
2
1
1
2
4
8
4
3
2
1
1
2
4
8
Zone 2
Zone 3
Zone 4
Fig 9.9.2
ON
ON ON ON
Hydro-Temp
Touch
Zone 1 Thermostat
A
B
C
D
S1
S2
C
D
B
A
Touchscreen
Electrical Box
ZS T-Stat
RNET +
Gnd
Rnet
Rnet+ Rnet - +12V
ZS T-stat
Zone 2
RNET -
+12
RNET +
GND
Fig 9.9.2.1
Gnd
Rnet
Rnet+ Rnet - +12V
ZS T-stat
Zone 2
Gnd
Rnet
Rnet+ Rnet - +12V
ZS T-stat
Zone 3
Gnd
Rnet
Rnet+ Rnet - +12V
ZS T-stat
Zone 4