Drolet GRIZZLY Service Manual download pdf (Page 12)

Page 11 of 23

Preliminary test

Before inserting the fireplace, it is suggested to verify the items listed below and correct if necessary;

• Leaks on copper connections; inlet and outlet of the valve as well as the inlet of the burner;

• The chimney is properly in place and well secured with approved parts;

• The burner has been levelled;

• The fireplace is permanently attached to hearth;

• Enough draught is available and has been adjusted according to the following procedures.

Adjustment of the draught

• Your stove operates with natural draught, created by the ascension of combustion gases in the

chimney. This movement creates a siphon effect in the stove and forces ambient air to go in the burner

by the holes in its surround. These orifices let air in for combustion.

• For the unit to function properly, it is essential to check the quality of the draught using a draught

gauge. The draught is usually measured in inches of water column.

• Check the minimum draught required of the unit on page 1. The draught mentioned has to be reached

rapidly at a minimum settling (position #1).

• Depending on the model, the draught can be taken by the orifice on the cooking surface. The measure

can also be taken by the orifice on the draught regulator usually plugged by a rubber cap. The orifice

on the cooking surface is still the best area.

IMPORTANT : ALWAYS MEASURE THE DRAUGHT WITH ALL VENTILATION EQUIPMENT

INSTALLED IN THE HOUSE (RANGE HOOD, BATHROOM FAN, AIR EXCHANGER, DRYER, ETC IN

OPERATION.) ref. : standard CAN/CSA B-139 art. 4.1.5.

Measuring the draught :

• For a proper operation of the fireplace, it is

essential to check the chimney draught

with a draught gauge. Since natural

draught is low, inches or millimetres of

Water Column are used for the draught

measurements.

• Chimney’s minimum draught required is

0,06’’ of W.C. Draught should be reached

rapidly at the minimum flow setting,

(position «1»).

• Measure the draught by using the hole

made in the burst disc plate designed for

this purpose. (see figure 18).

Figure 18 : Draught test

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Drolet GRIZZLY Service Manual Page 12