Honeywell SDCR/U Slave Damper Control Relay, Domestic

The Slave Damper Control Relay, Model SDCR, is a relay control panel used when three or more dampers need to be controlled by a single switch or thermostat. The SDCR can control up to four dampers. Each motor is controlled individually by a separate set of contacts in the plug-in relay The SDCR can be wired to open and close all damper motors simultaneously. By reversing the M4 and M6 wires on any motor, these dampers can be made to operate in reverse of the other dampers, such as in a face and by-pass operation. Each SDCR can control up to four individual damper motors. When more than four damper motors need to be controlled, multiple SDCR relay panels can be wired together to control as many dampers as necessary. Each SDCR requires an individual 24 VAC, 40 VA Transformer to power each set of damper motors. All of the SDCR relays can be wired together to be controlled by one set of switch contacts. The C and C terminals are the SDCR's relay coil. The SDCR can also be powered from any zone of any Mastertrol® panel. The C and C terminals wire to the Ml and M4 terminals on the Mastertrol®. On older Mastertrol panels that have five motor terminals, Ml-M2-M4-M5-M6, a jumper is required between terminals M2 and M5.

Slave Damper Control Relay, Domestic