CALEFFI Z-one ZVR10 Series Manual page 11

Z-one Thermostat Connections
All Caleffi Z-one controls use the same interface
to connect to thermostats.
very flexible and allows many different types
of thermostats to be connected to the control
including 2, 3 and 4 wire versions. In addition, any
type of switching device can be used to signal a
heat demand by connecting the R & W (T & T)
terminals together. The terminals are dual labeled
to help simplify wiring.
Z-one T-stat interface
X X
R W C R W C R
T T COM T T COM T
T-STAT 1 T-STAT 2 T-STAT 3
Description
R = 24 VAC Supply
W = Heat Call
6 Zone
C = 24 VAC Common
Function
ZSR106
POWER IN
L
R&W: When connected, signals a heat demand.
R&C: Provides 24 VAC to powered thermostats.
WARNING: NEVER CONNECT R & C DIRECTLY,
X X
this will be a direct short on the 24 VAC supply
PRIORITY
PUMP 1 PUMP 2
L N
L N
SAFETY INSTRUCTION
This safety alert symbol will be used in this manual to draw attention to safety
related instructions. When used, the safety alert symbol means ATTENTION!
BECOME ALERT! YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD.
CAUTION: All work must be performed by qualified personnel trained in the
proper application, installation, and maintenance of systems in accordance with all
POWER IN
L
applicable codes and ordinances.
Caleffi shall not be liable for damages resulting from misapplication or misuse of it products.
2-Wire Thermostats
There are a few different types of 2 wire thermostats
This interface is
including bi-metallic, power stealing and battery
powered.
the same manner to the Caleffi Z-one series of
controls. Connect R to R and W to W. See below.
DHW
R W C R W C R
W C R W C R W
ZR/ZC
T T COM T T COM T
THM 1 THM 2 THM 3
T COM T T COM T T COM
T-STAT 4 T-STAT 5
3-Wire Thermostats
6 Zone
Three wire thermostats get their power from the
TRANSFORMER
control they are connected to. R & C from the
12/20VA Z6P
Z-one Control supply 24 VAC to the thermostat at
DipSwitches
all times while the W lead signals a heat demand.
Master Slave
Priority OFF
Primary OFF
Exercise OFF
PRIORITY
Post Purge OFF
GROUNDS PUMP 2
PUMP 1
N
L N
L N
DHW R W C R W C R
ZR/ZC
T T COM T T COM T
THM 1 THM 2 THM 3
PUMP 3 PUMP 4 PUMP 5
L N L N L N
Always refer to the thermostat manufacturer's instructions.
6 Zone
TRANSFORMER
Z6P
12/20VA
PRIORITY
GROUNDS PUMP 2
PUMP 1
N
L N
L N
All of these thermostats connect in
DHW
X X R W
ZR/ZC
T T COM
THM 1
W C R W C R W C R W C
C R W C D P
T COM T T COM T T COM T T COM
THM 4 THM 5 THM 6
COMMS
T T COM
T-STAT 6
DipSwitches
TRANSFORMER
12/20VA
Master Slave
Priority OFF Priority ON
Primary OFF Primary ON
Exercise ON
Exercise OFF
Post Purge ON
Post Purge OFF
Priority ON
Primary ON
Exercise ON
POWER IN
GROUNDS
Post Purge ON PRIMARY
L N
PUMP 3 PUMP 4 PUMP 5
PUMP 6
PUMP
L
L N L N L N L N
DHW
X X
W C R W C R W C R W C
ZR/ZC
T COM T T COM T T COM T T COM
PRIMARY
THM 4 THM 5 THM 6
PUMP
PUMP 6
L N
N
L
DipSwitches
Master Slave TRANSFORMER
Priority ON
Priority OFF
Primary OFF Primary ON 12/20VA
Exercise OFF Exercise ON
Post Purge OFF Post Purge ON
POWER IN
PRIMARY
PUMP 3 PUMP 4 PUMP 5 PUMP 6
PUMP
L N
L N L N L N L N L
4-Wire Thermostats
To connect a 4-wire thermostat to the Z-one
series controls, connect R to R, W to W and C
to C. A jumper in the thermostat is also required
between R & Rh as shown below. Similar to a
3-wire thermostat, R & C from the Z-one Control
supply constant 24 VAC to the thermostat.
C R W C R W C R W C R
T T COM T T COM T T COM T
THM 2 THM 3 THM 4 THM 5
D P
PWR
COMMS
PWR
Dry Contacts
ZONE1
DipSwitches
ZONE2
ZONE1
6 Zone
A heat demand can also be initiated by any type
Master
Priority OFF
of device that has dry contacts (dry contacts are Primary OFF
Z6P ZONE3 Exercise OFF
Post Purge OFF
a set of contacts that open and close but do not
ZONE2
ZONE4
have any voltage present until supplied from an
outside source). The end switch on a Z-one series
ZONE5
ZONE3
zone valve is an example of a dry contact. Using
ZONE6
PRIORITY
a dry contact to connect R to W will initiate a heat
PUMP 2 PUMP 3 PUMP 4 PUMP 5
PUMP 1
demand.
ZONE4
L N L N L N L
L N
N
ZONE5
ZONE6
R W C R W C R W C R
D P
PWR
T T COM T T COM T T COM T
COMMS
THM 1 THM 2 THM 3 THM 4
ZONE1
ZONE2
6 Zone
ZONE3
CAUTION: Electrical shock hazard. Disconnect power before installation to prevent
Z6P
electrical shock or equipment damage. Make sure all connections are in accordance
ZONE4
with the electrical wiring diagram and in accordance with national and local electrical
codes.
ZONE5
ZONE6
PRIORITY
CAUTION: Avoid electrical noise interference. Do not install near large conductors,
GROUNDS PUMP 2 PUMP 3
PUMP 1
electrical machinery, or welding equipment. Avoid locations where excessive
L N L N
L N
moisture, corrosive fumes, vibration, or explosive vapors are present.
N
C R Rh W1
W C R W C D P
COMMS
T COM T T COM
THM 6
Slave
Priority ON
Primary ON
Exercise ON
Post Purge ON
PRIMARY
PUMP 6
PUMP
N
N L N L
W C R W C R W C D P
COMMS
T COM T T COM T T COM
THM 5 THM 6
DipSwitches
Master Slave
Priority ON
Priority OFF
Primary OFF Primary ON
Exercise OFF Exercise ON
Post Purge OFF Post Purge ON
PRIMARY
PUMP 4 PUMP 5 PUMP 6
PUMP
N
L N L N L N L
PWR
ZONE1
ZONE2
ZONE3
ZONE4
ZONE5
ZONE6
P
ZO
ZO
ZO
ZO
ZO
ZO
3