Jotul GI 425 DV - Manual (Page 15)

15
The appliance must be isolated from the gas
supply line by closing its individual manual gas
shutoff valve (gas cock) during any pressure testing
of the gas supply piping system that is equal to or
exceeds pressures of 1/2 psig (3.5 kPa).
Inlet Pressure
MIN MAX
Natural Gas: 5.0 WC (1.24 kPa) 7.0 WC (1.74 kPa)
Propane: 12.0 WC (2.98 kPa) 13.0 WC (3.23 kPa)
Manifold Pressure
MIN MAX
Natural Gas: 1.2 WC (0.29 kPa) 3.8 WC (.95 kPa)
Propane: 2.9 WC (0.72 kPa) 11.0 WC (2.74 kPa)
ALWAYS TEST PRESSURE WITH VALVE CONTROL KNOB
SET ON HIGH. Symptoms of incorrect gas pressure
include:
Insufficient gas pressure:
• Small pilot flame which can result in insufficient
millivolts.
• Little variation in flame picture between HI and
LO settings.
• Insufficient gas to support more than one appli-
ance causing nuisance outages or gas surges.
Excessive gas pressure:
• Permanent damage to valve causing complete
appliance shut down.
• Too large a pilot flame resulting in overheating of
the power generator and consequent shut down.
• Sooting due to impingement and/or incorrect fuel
to air mix.
High Altitude Adjustment
Installations located at altitudes from 2000 - 4250 ft.
(610 M - 1370 M), DONOT require adjustment. Do
not derate this appliance for altitude.