Drolet HEATMAX II Installation And Operating Instructions Manual page 16

HeatMax II Furnace Installation and Operation Manual
o Maximum unsupported horizontal length: 3 feet (1 m);
o Galvanized flue pipes must not be used because the coatings vaporize at high
temperatures and release dangerous gases;
o Flue pipes must be at least 24 gauge in thickness;
o The chimney connector must be in good condition;
o Flue pipe joints should overlap 1 1/4". (30 mm);
o Straight up installations needs to have either a connector where one end has no
fastener or a telescopic length;
o Removal of the assembly for cleaning should not require that the furnace be
moved;
o The male ends of the sections must be oriented towards the appliance so that
falling dust and condensation stay inside the pipe;
o A straight flue pipe assembly offers the least restriction to gas flow and results in
stronger draft. Straight assemblies also need less maintenance because there
are no corners to collect creosote;
o The use of 45° elbows is strongly recommended;
o A 90° elbow = 5' (152 cm), a 45° elbow = 2.5' (76 cm);
o Never use more than two 90° elbows.
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Proper installation
CAUSES
RESTRICTION
improper installation