Hamworthy LILIPUT HE Installation, Commisioning And Maintenance Instructions page 21

i. h. Check all flue joints for integrity.
j. i. Check ventilation ducts/grilles to boiler
room and ensure they are clear.
k. j. Re-commission boiler as detailed in
relevant parts of Section 8 - Commissioning.
HAMWORTHY HEATING LTD
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LILLIPUT HE 500001047/F