Black & Decker BD-24-DWH Manual Download | Manualshive

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Electrical Specifications by Heater Input

Item #

kW

Max

Amps

Required Breaker

Req. Wire Size

BD-24-DWH 24

100

3 x 40A Double Pole

3 x 8/2 AWG with Ground

BD-27-DWH 27

112.5

3 x 40A Double Pole

3 x 8/2 AWG with Ground

Power Rates

Item #

240V

220V

208V

BD-24-DWH

24,000 Watts

20,166 Watts

18,026 Watts

BD-27-DWH

27,000 Watts

22,687 Watts

20,280 Watts

Your tankless water heater is now installed and ready to use! Follow the General Operating

Instructions to complete the setup.

Wiring Diagram for BD-24-DWH

,

BD-27-DWH

Terminal Block in Unit

Unit Requires 10 AWG ground wire - one for each 240V circuit

L1

L1

L1

L2

8/2 AWG

8/2 AWG

8/2 AWG

L2

L2

240V

240V

240V

L1 L2

L1 L2

L1 L2

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Summary of Contents for BD-24-DWH

Page 1: ...www bdwaterheaters com Electric Tankless Water Heaters Models BD 24 DWH BD 27 DWH 118º F temp ...

Page 2: ...te injury Used without word Indicates a safety related message NOTICE Indicates a practice not related to personal injury which if not avoided may result in property damage WARNING PLEASEREADTHISINSTRUCTIONMANUALTHOROUGHLYANDCOMPLETELY BEFORE INSTALLATION USE FAILURE TO DO SO COULD CAUSE DAMAGE TO PROPERTY SERIOUS INJURY OR DEATH AND VOID YOUR WARRANTY Please contact us directly should you have an...

Page 3: ...trical Installation 10 11 9 Flow Rate 12 10 Operation Guide 12 13 11 Care and Maintenance 13 14 12 User Interface Controls 14 15 13 Troubleshooting 16 17 14 Reset Unit 18 Before Installing By installing this product you acknowledge the terms of the manufacturer s warranty and authorized dealer s return policy Once the heater is installed do not return the product to the place of purchase If you ha...

Page 4: ...e in water The breaker used to power this unit must be grounded by means of the electrical panel The heater must be directly connected to dedicated circuit breakers on the main electrical panel Do not install the heater where it may be subjected to direct sunlight rain splashing water moisture humidity or freezing temperatures This unit is intended for heating water only Do not attempt to use the ...

Page 5: ...or dust or in an area where it may be splashed with water or other liquids DO NOT install underwater pipes or air conditioning lines that might leak or condense moisture that could then drip onto the heater DO NOT install above electrical boxes or junctions Do not install in areas which can be damaged due to leakage from the Water Heater However safety measure such as suitable drip pan or an activ...

Page 6: ...hese flammable materials at least two feet away from the heater and the hot water outlet pipe The water heater and the hot water outlet pipe must be secured and out of children s reach to prevent tampering with controls or contact with an extremely hot pipe 6 If installing the heater on an upper floor or attic make sure installation complies with the local codes Install a drip pan with drainage or...

Page 7: ... accordance with local codes It is important to ensure that the unit is operating correctly and that air is purged from the valve prior to installing the water heater A T P valve is recommended for added safety when connecting to plumbing rated Metal Flex or High Temperature CPVC piping NOTE A pressure relief valve is required for installations in the Commonwealth of Massachusetts and State of Ken...

Page 8: ...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 MIGH...

Page 9: ...e gauge as well as circuit protection breaker must comply with the U S National Electrical Code NEC in the USA or the Canadian Electrical Code CEC in Canada Failure to do so could lead to property damage personal injury and void your warranty Note The Canadian Electrical Code generally requires that all supply wires and corresponding circuit protection used for domestic hot water heating and hydro...

Page 10: ...P 4 DOUBLE CHECK the electrical connections and ensure the wire connections are correct tight and secure It s important to confirm that the right breaker size and wire gauge has been used and that the unit has been connected to a ground in accordance with applicable codes Be sure to reattach the front cover of the unit with two screws STEP 5 Ensure that all the air has been purged from the water l...

Page 11: ... 240V 220V 208V BD 24 DWH 24 000 Watts 20 166 Watts 18 026 Watts BD 27 DWH 27 000 Watts 22 687 Watts 20 280 Watts Your tankless water heater is now installed and ready to use Follow the General Operating Instructions to complete the setup Wiring Diagram for BD 24 DWH BD 27 DWH Terminal Block in Unit Unit Requires 10 AWG ground wire one for each 240V circuit L1 L1 L1 L2 8 2 AWG 8 2 AWG 8 2 AWG L2 L...

Page 12: ...ater is detected by a flow sensor and the high power heating elements are activated Sensors continually monitor the water flow rate and measured the incoming and outgoing water temperature Data is transmitted to the system logic controls which determines the exact amount of power required by heating elements to heat the water to your desired temperature It is essential to keep in mind that all tan...

Page 13: ... immediately Do not over tighten any of the connections Over tightening the connection points could cause severe internal damage to the unit Remember that water heated at higher temperatures produces scale buildup much faster than at lower temperatures Having manual shut off maintenance valves installed on the inlet and outlet of the water heater will allow access to flush the unit with a descalin...

Page 14: ...ater faucet and allow water to run through the heater The digital display lights up and shows the current temperature setting To increase or lower the temperature setting press increase the temperature or to decrease the temperature Temperature can be set to any temperature from 86 F 30 C to 122 F 50 C A comfortable temperature for bathing and showering is between 105 F 41 C and 110 F 43 C The rec...

Page 15: ...ter to flow continuously through the device at a very low rate without heating Restore power to the unit when temperature condition is normal If the water inside the heater freezes it can cause damage that is not covered by warranty If you suspect water has frozen within the unit do not turn it on until you are sure the frozen water has melted and there are no leaks in the unit It is recommended t...

Page 16: ...ter Reduce the water flow rate at the faucet or slightly close the shutoff valve on the unit s incoming water supply line to reduce the water flow rate Voltage less than 240 Volts The heating elements on your water heater are designed for 240 volts When used with a lower voltage they produce less heating power You may need to upgrade to a larger input heater Crossed Wires If it s a new installatio...

Page 17: ...r outlet Temperature setting is too high Switch to a lower temperature setting Water Temperature at faucet is too hot Check for too little flow or if the set point temperature is too high This could possibly indicate a possible internal part failure Call us for technical assistance Heater shuts off during use Power outage or faulty wiring Check the power supply Check the circuit breakers If the pr...

Page 18: ... water heater WARNING SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING Locate the three reset button locations as shown below and press all buttons If you hear a click the unit has reset If you find that the unit needs to be reset quite often please call our customer service for further assistance Proceed to turn on your breakers and power on the unit ...

Page 19: ...ter heater or 1 000 00 whichever is less The manufacturer is not an insurer and the original owner should purchase insurance to cover damage to property or belongings The original owner agrees to waive their right to jury trial or to participate in a class action Also the original owner agrees to waive subordination to the extent a loss is covered by insurance so that their insurance company canno...

Page 20: ...Notes ...

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