Heating Tekmar Boiler/Dhw Controls | Smart Boiler Expansion, Four Tn4, Expands Four Boilers Up To 16 Boilers, 3-Wire Communication

The Smart Boiler Expansion 294Exp Expands The Smart Boiler Control 294 In Groups Of Four Boilers Up To A Maximum Of Sixteen Boilers. The 294Exp Connects To The Smart Boiler Control 294 Through A Three-Wire Communication Cable.

Feature:

• Expansion For 4 Boilers
• Led Status Indicators For Power, Communication, Each Boiler And Pump/Valve
• 3-Wire Communication
• Boiler Configuration Selected By Dip Switches