Z-4M Four-Zone Pump Control with mixing reset, for hydronic systems. 120V, 24VA thermostat current.
This model features pre-wired integral mixing reset controller. The controller varies the speed of an injection pump to maintain the optimum radiant loop temperature relative to the outdoor air temperature. 24 VA transformer and 20 amp rating with quick-connect terminals. 13.5"wide x 8.25"high x 3.25" deep.