United States Stove A9740N, G9740L, C9740N, G9740N, A9740L, C9740L GAS Connection, Gas Connection

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GAS CONNECTION

NOTICE

CAUTION

A qualified gas appliance installer must connect the fireplace to the gas supply. Consult all local codes.

Use new black iron or steel pipe only. Internally tinned copper tubing can be used in some areas when permitted by local codes. Only use pipe of 1/2" or greater diameter to allow full gas volume to heater. Excessive pressure loss will occur if the pipe is too small.

A manual shutoff valve, union and plugged 1/8" NPT pressure tapping point must be installed upstream of the heater (FIGURE 5).

A sediment trap must be installed upstream of the heater to prevent moisture and contaminants from passing through the pipe to the heater controls and burners. Failure to do so could prevent the heater from operating reliably (FIGURE 5).

TO HEATER

CONTROL VALVE

PIPE

COUPLING

SEDIMENT TRAP

STAINLESS

FLEXIBLE TUBE

PIPE

MANUAL

SHUTOFF VALVE

TEE JOINT

PIPE NIPPLE

CAP

IMPORTANT: Loosen the pipe adapter on the flex tube before installing to the system piping.

FIGURE 5. Gas Connection

CHECK GAS TYPE: The gas supply must be the same as stated on heater's rating plate. If the gas supply is different, DO NOT INSTALL the heater. Contact your dealer for the correct model.

WARNING

Connecting directly to an unregulated propane/LPG tank can cause an explosion.

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Contents United States Stove Company Table of Contents Important Safety Information Explosion or carbon monoxide poisoningProduct Features FeaturesContents Items Required for Installation Items Required for InstallationCodes Adequate Combustion and Ventilation AIRInstallation Minimum ClearancesGAS Connection Gas ConnectionGAS Pressure Check Rear View of 9740 Vent-Free Gas HeaterLOG Assembly Proper Installation SequenceRemoving Front Screen LOG PositioningFor Your Safety Read Before Lighting For Your SafetyOperating Instructions What to do if YOU Smell GASLighting Instructions Turn OFF GAS to AppliancePilot Flame Match Lighting InstructionsChecking Flame Appearance Flames Cleaning / ServicingFlame Appearance Heater Assembly Replacement Parts Parts List for Heater Assembly KEY Description QTYBurner & LOG Assembly Parts List for GAS LOG Assembly Troubleshooting Observed Problem Possible Cause RemedyTroubleshooting Optional F40 Blower KIT Page Limited Warranty Policy HOW to Order Repair Parts or Options United States Stove Company