5
DRISTEEM GTS HUMIDIFIER INSTALLATION AND OPERATION MANUAL
Wiring and supply water piping requirements
WIRING
WARNING
Installation must meet the requirements of governing codes or, in the absence of governing codes, in accordance
with IEE wiring regulations (BS7671). Failure to follow these instructions could cause a fire, resulting in severe
bodily injury, death, or significant property damage.
Follow the instructions below for GTS humidifi er wiring:
• Use only copper wire.
• GTS
humidifi ers must be supplied with 230 Vac, 50 Hz, separately fused electrical service.
• The electrical subpanel must have an uninterrupted earth ground to minimize personal injury if an electrical fault
should occur. Install in accordance with existing electrical codes.
• Do not use gas piping as an electrical earth ground.
• All electrical components and wiring must be protected from mechanical damage and water.
• Check the electric current characteristics and capacity requirements against the nameplate. All wiring must be in
accordance with the governing codes listed above and with the GTS wiring diagrams.
SUPPLY WATER PIPING REQUIREMENTS FOR ALL WATER TYPES
Follow the GTS humidifi er supply water piping instructions below for
all
water types. Install supply water piping in
accordance with locally applicable installation regulations.
• Provide a shutoff valve and union in the supply water line to isolate the humidifi er from the water system while
servicing.
• To minimize electrolytic corrosion, install insulating unions to make connections between copper and other dissimilar
metal fi ttings, such as galvanized steel.
• Humidifi er tank must be full of water — and supply water free to fl ow into the tank — before the ignition sequence
of a newly installed humidifi er is initiated.
• If planning to use heated supply water, disconnect the supply water line from the water tempering device fi ll
manifold/tee. Install a pipe plug in the manifold/tee, and reconnect the water tempering device line to a cold water
supply.
• The supply water pressure range must be 172 kPa minimum with fi ll valve open to 552 kPa maximum with fi ll valve
closed. When using nonmetallic tubing for supply water, it must be rated for 100 °C minimum continuous operating
temperature. DriSteem recommends installing a 1 m piece of noninsulated stainless steel pipe directly off the
humidifi er prior to connecting to the nonmetallic tubing.
• Before connecting piping to the GTS humidifi er, thoroughly fl ush the supply water piping to prevent pipe residue
and stagnant water from getting into the humidifi er tank.
General supply water piping information:
• The end-of-season feature shuts off the supply water and drains the tank when there is no demand for humidity for
72 hours. This is a default setting and is user-adjustable.
• The
humidifi er has a 25-mm internal air gap to prevent back siphoning into a potable water system. Some
governing codes may require additional protection, such as a vacuum breaker or backfl ow preventer.
• The supply water assembly has a DN10 pipe thread connection.