8
DRISTEEM GTS HUMIDIFIER INSTALLATION AND OPERATION MANUAL
Important:
The required supply pressure is 20 or 25 mbar for natural gas and 30, 37, or 50 mbar for propane gas.
WARNING
Fire hazard:
Supply the humidifi er only with the gas type (natural gas or LP gas) listed on the humidifi er name plate. Failure
to supply the humidifi er with the listed gas type could result in burner failure or a fi re, causing property damage,
personal injury, or death.
Follow the GTS humidifi er gas piping instructions below. Conform to local and national directives and regulations for the
installation of gas-fi red equipment.
• After threading and reaming ends of pipes, inspect piping and remove loose dirt and chips.
• Support piping so there are no strains imposed on humidifi er or controls.
• Use two wrenches when connecting piping to humidifi er or controls.
• Provide a drip leg before each humidifi er and in the line where low spots cannot be avoided.
• Take-off to humidifi er should come from top or side of main to avoid trapping condensate.
• Piping that is subject to wide temperature variations should be insulated.
• Pitch piping up toward humidifi er at least 6 mm per 4.5 m of horizontal run.
• Compounds used on threaded joints of gas piping must be resistant to the harmful action of liquefi ed petroleum
gases.
• Install a ground joint union and a manual shutoff valve immediately upstream of the humidifi er.
• Do not use fl exible connectors.
• Allow at least 1.5 m of piping between any high pressure regulator and humidifi er pipe connection.
• Piping installation must conform to the requirements of the authority having jurisdiction or, in the absence of
such requirements, must conform to local and national directives and regulations for the installation of gas-fi red
equipment.
Gas piping