Drolet Nova 820 - Manual (Page 19)

ELATION Fireplace Insert 19
ADJUSTMENTS
NOTE: Adjustments to the valve assembly must be performed by a qualified service person.
• The appliance and its individual shutoff valve must be disconnected from the gas supply
piping system during any pressure testing of that system at test pressures in excess of ½ psi
(3.5 kPa).
• The appliance must be isolated from the gas supply piping system by closing its individual
manual shutoff valve during any pressure testing of the gas supply piping system at test
pressures equal to or less that ½ psi (3.5 kPa).
Natural Gas Pressure Settings:
The inlet supply or line pressure must be a minimum of 5” wc (1.3 kPa) and a maximum of 8”
wc (2 kPa). The orifice has a #42 hole.
ELEVATION INPUT RATING
0-4500 ft. (0-1400 m) 25,000 (7300) BTU/hr (watts)
4500 ft. (1400 m) + 25,000 (7300) BTU/hr (watts) less 4% per 1000 ft. (300 m)
or reduce manifold pressure by 0.25” wc (0.06 kPa) per 1000 ft. (300m)
Propane Pressure Settings:
The inlet supply or line pressure must be a minimum of 11” wc (2.8 kPa) and a maximum of
14” wc (3.5 kPa). The orifice has a #53 hole.
ELEVATION INPUT RATING
0-4500 ft. (0-1400 m) 25,000 (7300) BTU/hr (watts)
4500 ft. (1400 m) + 25,000 (7300) BTU/hr (watts) less 4% per 1000 ft. (300m)
or reduce manifold pressure by 1” wc (0.25 kPa) per 1000 ft. (300m)
NOTE: THE INPUT RATING SHOULD ALWAYS BE CHECKED WHEN FIRST RUNNING
THIS APPLIANCE. To do this, reduce the background flow rate, time the meter, light the
fireplace and take another reading. Check with your gas supplier for the gas BTU content at
your elevation. Input is the rate of flow multiplied by the heating value of the gas (cubic
feet/hour x BTU per cubic feet). Adjust the manifold pressure so that the unit does not operate
above the rated input.