HONEYWELL R8889A1014 120 Vac Hydronic Control with 3 Zones expandable, Priority Control and -20 F to +100 F temperature range. Hydronic Valve Zone Panel with Priority Control provides burner control and valve control for up to three (R8889A,C) or four (R8889B,D) zones in hot water systems.Features For use in residential and light commercial applications. Zone One can be selected to give priority to indirect hot water tank. Up to four panels may be wired together to provide 12 to 16 zones while maintaining priority zoning. The R8889 may be used in combination with the R8888 circulator panels. Operates 24 Vac zone valves, including Honeywell VC series and Taco valves. 24V internal transformer provides power for low voltage control circuit and valves. Diagnostic LEDs for troubleshooting. Socket-mounted and field-replaceable burner relays. Clearly marked terminal designations for easy wiring. Compatible with Honeywell and competitive electronic, electromechanical thermostats and Honeywell Aquastat Controls. Compatible with Honeywell and competitive electronic, electromechanical thermostats and Honeywell Aquastat Controls. Mount horizontally only.
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