Black+Decker BD-07-DWH, Instruction Manual

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8
EN
• We recommend the installation of a manual shut-off valve (ball valve) on the inlet and outlet
of the water heater to create a convenient shut-off point if future maintenance or servicing
is required. Before connecting the pipes to the water heater, it is highly essential to flush
the lines to eliminate all the plumbing paste or residue in the lines caused by any welding or
soldering.
• All the water pipes within 3 feet (1 meter) of the inlet and outlet connections are recommended
to be rated for high-temperature applications with 150°F (66°C) minimum.
• Before proceeding to the electrical installation, run water through the unit for several minutes
to flush out any air bubbles from the water line.
6. Plumbing Installation
STEP 1: Thoroughly flush cold supply line of debris.
STEP 2: Connect the HOT WATER line to the water heater OUTLET. The water heater outlet can
be seen on the left side of the heater when facing the unit. Connect the COLD-WATER line to the
water heater marked COLD WATER INLET which is located on the right side when facing the unit.
* Pre-heated water can be connected to the cold water inlet, where this unit will act as a booster.
STEP 3: After tightening both fittings at the water heater, several hot water faucets should be
opened to allow the flow of water through the water heater for at least 2 to 3 minutes. This process
purges all the air from the water lines and MUST be performed before turning on the power at the
unit.
FAILURE TO FOLLOW THIS STEP MIGHT CAUSE PERMANENT DAMAGE TO THE HEATING
ELEMENTS. (The power to the heater should be turned off and the air purged out of the lines
before turning the power on anytime maintenance is performed on the water heater or the homes
plumbing system, as air might have been introduced into the plumbing pipes.)
STEP 4: Carefully inspect all connections, units, and the pressure relief device for leaks after the
plumbing installation is completed. If there are no leaks present, you can proceed to the electrical
installation.
CAUTION: If you detect a water leak from the water heater at this point, turn off the water
supply at the shut off valve on the unit’s incoming water supply and contact us at 1-844-746-6688.
Plumbing Specifications
Minimum water flow to activate the unit 0.5 gpm
Working pressure 0.5–10 BAR (7–150 psi)
Tested pressure (maximum) 20 BAR (290 psi)
Water connections 1/2” NPT