Product Overview
01285/16 NA
Z-one
™
Relay
Multi-zone pump switching relays
Function
The ZSR series is a zone pump and boiler operating control for
multiple zone hydronic heating systems. The ZSR series interfaces
with low voltage thermostats, or any other low voltage controllers
having a switching action. The ZSR series controls up to 6 zone
pumps (depending on model selected) and a primary pump. It
has LED indicators to provide functional status and easy system
troubleshooting.
Features
• Compatible with 2, 3 and 4-wire thermostats or other low
voltage controllers with switching action
• 120 VAC input
• Heavy duty, sealed relays
• 1 primary pump output and 3 to 6 (model dependent) zone pump
outputs (120 VAC/5A each)
• Zone priority selectable with 1-hour time-out feature
• Convenient R,W,C and T,T,COM dual labeling at thermostat
terminals
• System pump status (on/off) during priority selectable
• Dry contacts (XX,AUX, ZONE 1 E/S) capable of switching line
voltage
• High capacity 12 VA or 20 VA transformer (model dependent)
• Automatic resettable fuse on 24 V circuit
• Selectable post purge
• Selectable pump exercising
• 3 pump ground terminals for simplifed wiring
• Expandable to unlimited number of zones using simple 3-wire
connection between controls
• Large screw terminals for ease of wiring.
• Front panel LED indicator light for functional status
• 100% factory tested with 3 year warranty
• ETL certified to CSA and UL standards
ZSR series
Replaces 01285/14 NA
4009064
Certified to CSA C22-2 No.24
Conforms to UL Standard 873
Code ZSR103 Z-one
™
Relay pump switching relays, 12 VA maximum transformer load ............................................................................three zone
Code ZSR104 Z-one
™
Relay pump switching relays, 12 VA maximum transformer load ..............................................................................four zone
Code ZSR106 Z-one
™
Relay pump switching relays, 20 VA maximum transformer load ............................................................................... six zone
Product range
Materials
Housing plastic: ABS
Front display lights: LED
Electrical knockouts (12) 1/2" size
Performance
Power supply: 120 VAC, 50/60 Hz
Transformer voltage: 24 VAC
Maximum transformer load: 12 VA (ZSR103/4), 20 VA (ZSR106)
Electrical switch rating: 20A max combined
Electrical switch rating pump output: 120 VAC, 5A each
Dry contact rating, XX, AUX, ZONE 1 E/S: 120 VAC, 2A each
Replaceable fuses: Type 2AG, 5A slow blow
Temperature limits for:
Shipping and storage max: 110°F (43°C)
Maximum Operating: 110°F (43°C)
Maximum humidity: 90% non-condensing
Approvals: ETL certied to CSA C22-2 No. 24, conforms to UL873
Technical specifications
Dimensions
Code Zones A B C Wgt. (lbs)
ZSR103 3
9 1/4" 11" 3"
2.0
ZSR104 4
9 1/4" 11" 3"
2.0
ZSR106 6
9 1/4" 11" 3"
2.0
ZSR106
Six switching relays - Input: 120VAC 50/60Hz 20A MAX
Conforms
to UL 873
4009064
CAUTION: RISK OF ELECTRIC SHOCK - DISCONNECT ALL
INPUT POWER PRIOR TO SERVICING
Milwaukee, WI 53208 USA
POWER
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
ZONE 6
PUMP
ON
A
B C
C