Auer Steel
Part #NA10343
ExpansionTransformeFor3&4ZoneContr
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- Brand: CaleffiType: Multi-ZonePower Rating: 40 VASecondary Voltage: 24 VACPrimary Voltage: 120 VAC
- The ZVR series is a zone valve and boiler operating control for multiple zone hydronic heating systems. The ZVR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action. The ZVR series controls up to 6 zone valves, depending on model selected. In addition, a system pump and secondary pump is turned on whenever any zone calls for heat. A DHW primary pump can also be operated. LED indicators provide functional status and easy system troubleshooting.
- Anti-scale materials prevent scaling on internal sliding parts, that reduces jamming caused by lime deposits, assuring reliable, constant temperature setpoint and long, trouble-free operating life|Optional outlet temperature gauge speeds up the temperature setting process and provides dedicated proof-of-temperature verification to aid in the commissioning process (521, 5231)|Compatible with 2, 3 and 4-wire thermostats or other low voltage controllers with switching action|Heavy duty, sealed relays|3 pump outputs (120 VAC/5 A) and 3 to 6 (model dependent) zone valve outputs (24 V)|Zone priority selectable with 1 hr 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|Replaceable, snap-fit 40 VA transformer on 3 and 4 zone models, expandable to 80 VA with 2nd transformer|Two replaceable, snap-fit 40 VA transformers (80 VA) on 6 zone models|Automatic resettable fuse on 24 V circuit|Expandable to unlimited number of zones using simple 3-wire connection between controls|On-board ground terminals|Front panel LED indicator light for functional status|High capacity 40 VA transformer standard for 3 and 4 zone models
- Caleffi Expansion Transformer, Multi-Zone, 120 VAC Primary, 24 VAC Secondary, 40 VA