WATTS 81006629 P-2088 4 ZONE EXPANSION MODULE CONTROL

WATTS® 4-Zone Expansion Control Module, 24 V, 8 A, 40/60 VA Contact Rating, DIN Rail, Surface Mounting, 6-1/4 in L x 3-1/2 in W

These zone control modules are designed to operate Watts® Radiant electro-thermal actuators and greatly simplify wiring, reduce problems and decrease installation times. Master controls are equipped with valve and thermostat terminals, incoming 24 V power connections and two 8 amp. dry contact terminals for pump and boiler operation. The use of expansion (slave) units allows the control of more zones utilizing the same pump and boiler. Up to two expansion modules can be connected to a master control allowing for a maximum of 18 separate zones or thermostat connections. The number of actuators controlled depends on the separate 24 V transformer (not supplied) powering the control. An external 40 VA transformer can control a maximum of 12 actuators. Up to 18 actuators can be controlled by a 60 VA transformer. However the physical limitations of the control itself are four actuators per zone terminal. Master Controls are switched by triacs, for quiet, safe, reliable electronic operation. Mounting is either by DIN rail or surface mount to a wall.