Sime MIA-30, User, Installation And Servicing Instructions

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10 APPENDIX 1 (GUIDANCE HHIC)
Manufacturer’s instructions must be followed for the correct connection of the
condensate discharge pipe from the boiler as this may vary due to the design
of the boiler. For example a visible air break and trap is not required if there is a
trap with a minimum condensate seal of 75 mm incorporated into the boiler.
Internal Pipe Run In Unheated Spaces
Condensate discharge pipes that are routed in an unheated space such as a loft
or garage should be insulated to prevent freezing.
Internal condensate discharge pipework must be a minimum of 19mm ID
(typically 22mm OD) plastic pipe or as per manufacturer’s instructions and this
should “fall” a minimum of 45mm per metre away from the boiler, taking the
shortest practicable route to the termination point.
diagrams)
To minimise the risk of freezing during prolonged sub-zero conditions, an
internal “gravity discharge point” such as an internal soil stack (preferred
method), internal kitchen, utility room or bathroom waste pipe e.g. from a sink,
basin, bath or shower should be adopted, where possible.
Note - A suitable permanent connection to the foul waste pipe should be used.
Figures 1, 2(a), 2(b) show appropriate connection methods.
Manufacturers Instructions
Internal Condensate Pipe Discharge Termination
October 2018 Issue 1.0