combi boiler Agent with low loss header install pics

Viessmann Vitodens 100-W B1HA 26Vitodens 100-W B1HA ...

Connections Vitodens 100-W B1HA series & B1KA Combi Installation/Service Installation Examples (continued) Vitodens 100-W B1KA 35 with one heating circuit Legend Note: The use of a low-loss header is recommended if the Air vent water flow rate is less than 1.7 GPM (400 L/h) or Pressure relief valve (boiler) more than 6.2 GPM (1400 L/h).

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