Safety Valve; Hydraulic Connection Of The Water Circuit For Domestic Use - Potterton NXR4i Installation And Service Manual

4.5.4

Safety valve

The safety valve must be connected to the boiler outlet and no other
valve or flap must be interposed between it and the boiler.
Minimum safety valve flowrate as a function of maximum boiler nominal output
Minimum relieving capacity
Maximum gross boiler output
Unit (a) = kW
(b) = lb/h
(c) = MBtu/h
(d) = Kg/h
4.5.5

Hydraulic connection of the water circuit for domestic use

See: Domestic hot water calorifier instructions
09/06/2011 - 300025088-001-B
Example
Maximum boiler nominal output is 200 kW.
Minimum safety valve flowrate must be 700 kg/h.
NXR4i
4. Installation
15