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Guideline B-12

  • WGP date: 15/03/2016

Question

  • For warm water boilers which are controlled by a temperature thermostat and protected by a safety temperature limiter, does the maximum allowable temperature (TS) mean: a) the maximum intended operating temperature under normal conditions as controlled by the thermostat; or; b) the temperature setting of the ultimate over-temperature safety device i.e. the limiter?

Answer

(b) is correct.

Note:
manufacturers must ensure that the equipment is sufficiently robust to deal with any residual heat after activation of the limiter.

See also PED Guideline B-05