Gas Connections And Regulations - Space-Ray LTU SERIES Installation And Operation Instructions Manual

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GAS CONNECTIONS AND REGULATIONS

1. Connect to the supply tank or manifold in accordance with the latest edition of National Fuel Gas Code (ANSI Z223.1),
and local building codes. Authorities having jurisdiction should be consulted before the installation is made. (In Canada,
refer to the latest edition of CAN Standard B.149-1 & -2, Installation Codes for Gas Burning Appliances and Equipment.)
2. All gas supply lines must be located in accordance with the required clearances to combustibles below the heater as
listed on the nameplate of the heater.
3. Pipe joint compounds must be resistant to the action of liquefied petroleum gases.
4. Straight tube heaters (LTS series) can expand/contract during operation. If rigid pipe connections are planned, provisions
for expansion/contraction must be provided. Where local codes do not prohibit, a CSA or U.L. approved flexible
connector (minimum 5/8" I.D.) is recommended between the rigid piping and the heater. A union and an approved shut
off valve should be installed before the control valve inlet. The shut off valve should be installed within 6 feet of the
union.
5. This appliance is equipped with a step-opening, combination gas valve. The maximum supply pressure to the appliance
is 14" W.C. or 1/2 P.S.I. If the line pressure is more than the maximum supply pressure, then a second stage regulator
which corresponds to the supply pressure must be used.
6. If a 2 stage regulator is used and gas seeps through it, the redundant combination gas valve is designed to lock out.
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Pressure build-up in the supply lines prior to the heater must be released before proper heater operation.
7. After all gas connections have been made, make sure the heater and all gas outlets are turned off before the main gas
supply is turned on. Turn the gas pressure on and check for leaks. To check for leaks, apply a soap suds solution to all
connections and joints or check by one of the methods listed in Appendix D of the National Fuel Gas Code.
^ DO NOT USE AN OPEN FLAME OF ANY KIND TO TEST FOR LEAKS.
Certified connectors are recommended to be installed as shown, in one plane, and without sharp bends, kinks or twists.
The gas take off from the drop line must be parallel to the burner gas inlet connection.
If the maximum supply pressure is less than ½ psig, a second stage regulator is not required.
NOTE: LTS, LTU 200M BTU and above require a 3/4" flex connector.
Form #43155260
Mar–05 –31–