Installation of 3 high efficiency condensing modulating boilers and two indirect domestic hot water heaters.

Description of the installation: Viessmann Vitodens 200W with S Control for cascade control of the system with two Weil McLain indirect hot water heaters

Property Type: 40 unit apartment building
Property Size: 32,549
Fuel: Gas
Boiler: (3) Viessmann Vitodens 200W Boilers. Each boiler is 350,000 btus for a total of 1,050,000 btus. 
Domestic Hot Water Production: (2) 105 gallon indirect hot water heaters.
Other equipment:

  • Vitocontrol-S Cascade Control for each boiler to alternate heating production. 

System: Hot Water (hydronic)