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P:\Public\Spec Sheets\MAUI Gas Fire Indtructions.pdf
49
GAS TROUBLE SHOOTING GUIDE
CHECKING GAS PRESSURE WITH A MONOMETER
MAKE SURE BURNER IS OFF. Remove lower centre grill to expose Robertshaw
gas valve Locate allen bolt legend by “pressure tap and remove using 3/16” allen
wrench. Insert a monometer adaptor, hook up a 12” slack tube monometer. Zero out
scale so that water level is balanced at zero. Monometer has a sliding scale. Light
burner – water column will lower on one side and raise on the other. Natural gas
reading should be +1.75” on one side of the zero and –1.75” on the other. This will
give you a 3.50” total change in water column. Lp should be +5.5 on one side and –
5.5 on the other giving you an 11.00” total water column change. These readings can
only be obtained by having the adjustable control on high. If theses readings cannot
be reached you must check incoming pressure to the stove. If incoming pressure is
sufficient, the only way to correct it on an adjustable flame control valve
(Robertshaw) is to replace the regulator on the control valve.