Product Overview

Z-one™ Relay ZVR series
Multi-zone valve switching relay. Compatible with 2, 3 and 4-wire thermostats or low voltage controllers with switching
action. Power supply 120 VAC, 50/60 Hz. Zone priority selectable with 1 hour time-out feature. System pump status (on/
off) during priority selectable. Transformer voltage: 24 VAC. R,W,C and T,T,COM dual labeling at thermostat terminals. Dry
contacts (XX,AUX,T,T,ZONE 1 E/S) capable of switching line voltage. Automatic resettable fuse on 24 V circuit. Expandable
to unlimited number of zones using 3-wire connection between controls. Large screw terminals. Front panel LED indicator
light for functional status. ETL certified to CSA C22-2 No. 24, conforms to UL873. Provided with heavy duty, sealed relays, 3
pump outputs (120 VAC/5 A) and 3 to 6 (model dependent) zone valve outputs (24 V), replaceable, snap-fit 40 VA transformer
on 3 and 4 zone models, expandable to 80 VA with second transformer, two replaceable, snap-fit 40 VA transformers
(80 VA) on 6 zone models, and on-board ground terminals. Temperature limits for shipping, storage and operating:
110 degrees F (43 degrees C). Maximum humidity: 90 percent non-condensing. Electrical switch rating: 20A maximum
combined. Electrical switch pumps: 120 VAC, 5A each. Dry contact rating XX,AUX,T,T,ZONE 1 E/S: 120 VAC, 2A each.
SPECIFICATION SUMMARY
DHW
aquastat
DHW ZV1
ZV2 ZV4 ZV5 ZV6 ZV3
SYSTEM
pump
L
N
6 Zone
ZVR106
L
POWER IN
N
POWER
T-SAT
CALL
ZONE 6
L
ZONE #1
PUMP
N
L
SEC
PUMP
N
STATUS DURING
ZONE #1 DEMAND
ZONE 1
END
SWITCH
MOTOR
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
L
SYSTEM
PUMP
N
T-STAT 2
C
R
W
T T COM
COMMS
D
P
ZONE 1
E / S
X X
T-STAT 3
C
R
W
T T COM
T-STAT 1
C
R
W
T T COM
T-STAT 4
C
R
W
T T COM
T-STAT 5
C
R
W
T T COM
T-STAT 6
C
R
W
T T COM
AUX
ON
OFF
ON
OFF
VALVE
OPEN
ZONE 1
ZONE 2
ZONE 4
ZONE 5
ZONE 3
MASTER
PUMP EXERCISE ON
PRIORITY ON
AUX ON
SLAVE
OFF
OFF
OFF
DURING PRIORITY DEMAND
DHW
aquastat
SYSTEM
pump
DHW ZV1 ZV2 ZV4 ZV5 ZV6ZV3
Traditional boiler with priority indirect DHW
with valve, zone valves
We reserve the right to make changes and improvements to the products and related data in this publication, at any time and without prior notice.
Caleffi North America, Inc.
3883 W. Milwaukee Road
Milwaukee, WI 53208
Tel: [phone] · Fax: [phone]
[e-mail] · www.caleffi.com
© Copyright 2016 Caleffi North America, Inc.
Hydronic diagram is for illustration purposes only, some components have been removed for simplicity.