US$ 1305.00
Item #2: SH-12 thru SH-36
Alpine 500/600/700
FREEZE PROTECTION
The weekly program runs in 4 or 2 stages per day
Z-one Relay 3 Zone Valve Control Wired Thermostat Item #2: SH-12 thru SH-36Relay (multi zone) The ZVR series is a multi zone valve relay 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 3, 4, 5 or 6 zones, depending on model selected. In addition, a system circulator pump and secondary pump is turned on whenever any zone calls for heat. LED indicators
US$ 1305.00
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