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. Installation
Installing the drain pipe
Installing the drain pipe
▶ Use a level to make sure that product is horizontally leveled.
▶ Choose one of the 2 drain holes on the bottom of the product and insert the provided drain plug, then connect
the drain pipe.
▶ From the 2 drain holes, block the unused hole with the provided rubber plug.
▶ Install the drain pipe at the rear side of the unit to get a sufficient space for repairs and service on the front
side.
▶ Do not install a trap on the pipe and install the drain pipe horizontally with a slope of 2% or more to prevent
water from flowing backwards.
▶ For smooth drainage, install an air vent that is open to air.
▶ Insulate the drain pipe and drain plug with insulation over 10 mm (0.4 inch).
▶ Install the safety equipment for a heating appliance.
When concentrated drainage is installed
▶ Install a common drain pipe with an air vent that is open to air.
Verify water drainage
Prepare about 2 liters of water and pour water into the drain pan of the DVM Hydro unit / Hydro unit HT as shown
in the illustration.
<DVM hydro unit>
<DVM hydro unit HT>
Open to air
More than 1/50 slope
Drain plug
More than
2% slope
Open to air
Drain plug
