TWST Series

Ideal for Jobs with High, Periodic Demand

The TWST Series boasts all the features found on our TTS Systems while also utilizing a storage tank. This series can range from 399,800 to 1,199,400 BTU meaning it has enough power for most commercial scenarios requiring periodic high dump loads.

  • One Point of Connection
  • Aluminum Frame
  • 2 to 6 – Noritz NCC199CDV (GQ60) Tankless Water Heaters with System Controller
  • 119 Gallon Storage Tank Included
  • 1 ½” Water & Gas Manifolds
  • ¾” Condensate Drain Manifold
  • Expansion Tank Included
  • Breaker Box w/ Included Circuit Breakers
  • Pump Controller with Timer
  • Surge Protector
  • Building Recirculation Pump
  • Storage Tank Recovery Circulator (System Pump)
  • Isolation Valves
  • Well Immersed Thermistors for Easy Monitoring of Building Hot Water Performance
  • 2” Hot Water Supply to Storage Tank
  • 2” Cold Make Up Water
  • 2” Supply through Pump to Tankless
  • 2” Pump Bypass
  • Integrated 2” Check Valves

Installation Manual

Installation ManualNCC199CDV Installation Manual

Spec Sheets