User Instructions; Burner Resistance Check - Hamworthy Purewell Variheat mk2 70c Installation, Commissioning And Servicing Instructions

7.5 Refer to section 8.0 - Controls Operation, to set the relevant boiler parameters and timings specific to the
installation.
7.6 User's Instructions
The boiler owner or their representative should be made aware of the lighting and operating instructions.
A practical demonstration should be given describing each functional step. This Installer's Guide and User's In-
structions should then be handed over & kept in a safe place for easy reference.

7.7 Burner Resistance Check

The burner pressure should be measured via a test point located on the gas inlet manifold as shown in figure
7.7.1.
This pressure should be noted on the commissioning checklist at both high & low fire. This can then be compared
on each yearly service to assess burner resistance.
Burner pressure test point
Figure 7.7.1 - Burner pressure test point
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HAMWORTHY HEATING LTD PUREWELL Variheat mk2 218612 A03