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lp-585 Rev. 000 Rel. 001 Date 9.10.18

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18. Any damage or failure resulting from improper water chemistry. 

WATER CHEMISTRY REQUIREMENTS - Water pH between 6.5 and 8.5. 

Hardness less than 7 grains (120 mg/L). Chloride concentration less 

than 100 ppm (mg/L). TDS less than 500 ppm (mg/L);

19. Any damages, malfunctions, or failures resulting from the use of 

dielectric unions.

20. Production of noise, taste, odors, discoloration, or rusty water.

21. Drain back tanks replaced for cosmetic reasons.

22. Components of the drain back tank that are not defective, but 

must be replaced during the warranty period as a result of reason-

able wear and tear.

23. Components of the drain back tank that are subject to warran-

ties, if any, given by their manufacturers; HTP does not adopt these 

warranties.

24. Damages, malfunctions, or failures resulting from the use of any 

attachment(s) not supplied by HTP.

25. Drain back tanks installed outside the fifty states (and the District 

of Columbia) of the United States of America and Canada.

26. Drain back tanks moved from the original installation location.

27. Drain back tanks that have had their rating labels removed.

PROCEDURES FOR WARRANTY SERVICE REQUESTS

Any claim for warranty assistance must be made promptly. Deter-

mine if the drain back tank is “in-warranty” (that is, within the ap-

plicable warranty period) by reviewing a copy of the original sales 

receipt or warranty registration. The Owner must present a copy of 

the original sales receipt or warranty registration for a warranty ser-

vice request.

If the drain back tank is “in-warranty”, contact the retailer from whom 

the drain back tank was purchased (or the installer) for assistance. Be 

prepared to provide the retailer or installer with a copy of the original 

receipt, complete model and serial numbers, and the date of instal-

lation of the drain back tank, in addition to explanation of the drain 

back tank problem.

Warranty coverage is subject to validation of “in-warranty” coverage 

by HTP claims department personnel. All alleged defective or mal-

functioning components must be returned to HTP via the local dis-

tribution channels where original purchase was made. 

NOTE: Any 

components or heaters returned to HTP for warranty analysis 

will become the property of HTP and will not be returned, even 

if credit is denied.

 If all warranty conditions are satisfied, HTP will 

provide replacement components to the retailer.

For questions about the coverage of this warranty, please contact 

HTP at the following address or phone number: HTP, 272 Duchaine 

Blvd, New Bedford, MA, 02745, Attention: Warranty Service Depart-

ment, 1(800) 323-9651.

SERVICE, LABOR AND SHIPPING COSTS

Except when specifically prohibited by the applicable state law, the 

Owner, and not the Manufacturer, shall be liable for and shall pay for 

all charges for labor or other expenses incurred in the removal, repair, 

or replacement of the drain back tank or any component part(s) 

claimed to be defective or any expense incurred to remedy any 

defect in the product. Such charges include, but are not necessarily 

limited to:

1. All freight, shipping, handling, and delivery costs of forwarding a 

new drain back tank or replacement part(s) to the owner.

2. All costs necessary or incidental in removing the defective drain 

back tank or component part(s) and installing a new drain back 

tank or replacement part(s).

3. All administrative fees incurred by the Owner, as well as material 

required to complete, and/or permits required for, installation of a 

new drain back tank or replacement part(s), and

4. All costs necessary or incidental in returning the defective 

water heater or component part(s) to a location designated by the 

manufacturer.

LIMITATIONS OF YOUR HTP WARRANTY AND REMEDIES

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND AC-

CEPTED TO THE FURTHEST EXTENT UNDER APPLICABLE LAW IN LIEU OF 

ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING 

WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABIL-

ITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY OBLIGATION, 

LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER 

OR NOT ARISING FROM HTP’S NEGLIGENCE, ACTUAL OR IMPUTED. THE 

REMEDIES OF THE OWNER SHALL BE LIMITED TO THOSE PROVIDED 

HEREIN TO THE EXCLUSION OF ANY OTHER REMEDIES INCLUDING WITH-

OUT LIMITATION, INCIDENTAL OR CONSEQUENTIAL DAMAGES, SAID IN-

CIDENTAL AND CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT LIM-

ITED TO, PROPERTY DAMAGE, LOST PROFIT OR DAMAGES ALLEGED TO 

HAVE BEEN CAUSED BY ANY FAILURE OF HTP TO MEET ANY OBLIGATION 

UNDER THIS AGREEMENT INCLUDING THE OBLIGATION TO REPAIR AND 

REPLACE SET FORTH ABOVE. NO AGREEMENT VARYING OR EXTENDING 

THE FOREGOING WARRANTIES, REMEDIES OR THIS LIMITATION WILL BE 

BINDING UPON HTP. UNLESS IN WRITING AND SIGNED BY A DULY AU-

THORIZED OFFICER OF HTP. THE WARRANTIES STATED HEREIN ARE NOT 

TRANSFERABLE AND SHALL BE FOR THE BENEFIT OF THE OWNER ONLY.

NO OTHER WARRANTIES

This warranty gives the Owner specific legal rights. The Owner may also 

have other rights that vary from state to state. Some states do not allow 

the exclusion or limitation of incidental or consequential damages so this 

limitation or exclusion may not apply to the Owner.

These are the only written warranties applicable to the drain back tank 

manufactured and sold by HTP. HTP neither assumes nor authorizes any-

one to assume for it any other obligation or liability in connection with 

said drain back tanks. 

HTP reserves the right to change specifications or discontinue models 

without notice.

Summary of Contents for Drain Back

Page 1: ...ication does not imply endorsement or warranty of this product by the SRCC This manual must only be used by a qualified installer service technician Read all instructions in this manual before installing Perform steps in the given order Failure to do so could result in substantial property damage severe personal injury or death HTP reserves the right to make product changes or updates without noti...

Page 2: ... where they differ from the furnished instructions Always use the latest edition of codes Additional publications which should guide the installer include Local state provincial and national codes laws regulations and ordinances Solar Water Heating System Design and Installation Guidelines SRCC OG 300 available from Solar Rating Certification Corporation 400 High Point Drive Suite 400 Cocoa FL 329...

Page 3: ...C Start Up Procedure 15 Part 8 Service Maintenance Procedures 15 A Shutdown Procedures 16 B Draining the Drain Back Reservoir 16 C Routine Maintenance 16 D Vacation Shutdown Procedure 16 E Estimated Life of Components 16 F Temperature and Pressure Relief Valve 16 Part 9 Troubleshooting 16 A Leaks 16 B Other Problems 16 C Operating Suggestions for the User 16 Part 10 System Parts Listing 17 A Estim...

Page 4: ...erant leaks Auto body shops Paint or varnish removers Plastic manufacturing plants Hydrochloric or Muriatic acid Furniture refinishing areas and establishments Cements and glues New building construction Antistatic fabric softeners used in clothes dryers Remodeling areas Chlorine type bleaches laundry detergents and cleaning solvents Garages and workshops Adhesives used to fasten building products...

Page 5: ...d in copper to an appropriate drainage location will provide sufficient expansion protection This pressure relief valve and drain outlet pipe must never be sealed or blocked The pressure relief valve is intended to be operated for safety purposes only NOTE Supply and return connections to the collector must use eccentric fittings or a fitting arrangement that allows full draining of header pipes T...

Page 6: ...al heat output A deviation of up to 15o from due south is acceptable and will have minimal effect on heat output D Mounting Methods A B Sloped Roof C Flat Roof D Facade Figure 1 Suggested Solar Collector Mounting Designs 2 Collector Angle Tilt It is common for collectors to be installed at an angle that corresponds to the installation latitude While adhering to this guideline an angle of latitude ...

Page 7: ... hose clamp Wire nuts used to connect the sensor and low voltagewiringshallbeallplastic sealedwithsiliconeandthoroughly wrapped in electrician s tape The low voltage wiring used to connect the sensors to the controller should be a minimum 18 AWG The wiring should be bare or tinned copper two conductor PVC insulated with a PVC UV rated gray jacket suitable for exterior use Use Eastman Wire Cable no...

Page 8: ...ted thermostatic mixing valve IS REQUIRED PER SRCC OG 300 B Tools and Materials The following is a minimum list of basic required tools Other plumbing components will be field supplied according to installation needs COLDWEATHER HANDLING If the water heater has been stored in a very cold location BELOW 0o F before installation handle with care Failure to do so could result in damage to the water h...

Page 9: ...ng before you pipe into your solar system Failure to do so may damage your water heater Do not introduce HTF into any fittings on the heater except those clearly marked for that purpose It is mandatory that all plumbing be done in accordance with local and state codes or warranty will be void It is also necessary to use both thread tape and pipe dope on all mechanical connections The potable water...

Page 10: ...ck systems When making a connection to the heat exchanger use Teflon Tape and joint compound to prevent leaks Do not apply heat directly to the heat exchanger thread connection when sweating fittings Line pressure and temperature gauge shall be installed in the collector supply and return lines to allow for a simple diagnostic check of proper system operation On a sunny day the hot water return li...

Page 11: ...ge to an acceptable and safe temperature This also increases the amount of hot water drawn from the solar water heater by not allowing incoming cold water to fully temper the hot water stored inside the tank To help prevent injury due to scalding it is recommended that the mixing valve be set at 120oF Ball Valve for cold water shut off Valve 24 The cold water shut off valve should be used in the e...

Page 12: ...d to supply power to the pump control combo H Installing the Drain Back Tank Sight Tube IMPORTANT NOTE A sight tube has been included with the solar drain back tank The sight tube allows service technicians installers and users to quickly determine proper drain back system drainage and solar system heat transfer fluid level It is extremely important that this sight tube be installed BEFORE filling...

Page 13: ... water and maximum tank temperature Normal solar control settings may be between 120o and 160o Do not exceed 160o on the solar control setting 4 A solar rated mixing valve is recommended if the domestic hot water setting is above 120oF A standard mixing valve generally cannot deliver the temperature protection range at which a solar system operates 5 A minimum of 12 diameters of straight pipe must...

Page 14: ...nd maximum tank temperature Normal solar control settings may be between 120o and 160o Do not exceed 160o on the solar control setting 4 A solar rated mixing valve is recommended if the domestic hot water setting is above 120oF A standard mixing valve generally cannot deliver the temperature protection range at which a solar system operates 5 A minimum of 12 diameters of straight pipe must be inst...

Page 15: ...reeze protection Please refer to glycol manufacturer s specifications about the temperature ranges the liquid can withstand Only food grade polypropylene glycol FDA rated as GRAS should be used NOTE HTP DOES NOT WARRANT THE SOLAR WATER HEATER SOLAR COLLECTOR OR ANY COMPONENTS AGAINST FREEZE RELATED DAMAGE Part 7 Start Up Preparation DO NOT MOVE ON TO THESE STEPS UNTIL THE ENTIRE SOLAR SYSTEM INCLU...

Page 16: ...ms may have a greater temperature difference The storage tank should be flushed to prevent scale build up on an annual or bi annual basis following the manufacturer s recommendations Following installation of the T P Relief Valve the valve lever MUST be operated AT LEAST ONCE AYEAR by the water heater owner to ensure that waterways are clear Certain naturally occurring mineral deposits may adhere ...

Page 17: ...ion when using hot water to avoid scald injury Consult codes for conformance Failure to follow the instructions in this warning statement could result in serious personal injury or death from scalds Be sure to disconnect electrical power before performing service Failure to do so could result in electrical shock property damage serious personal injury or death If draining of the water heater is ne...

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Page 20: ...oily layer burnt odor or any heavy sludge in the fluid may indicate the need for replacement TESTING THE FLUID pH LEVEL Control of pH between 8 and 10 is important to minimize corrosion and glycol degradation Using narrow range pH paper such as pHydrion Control paper with a 7 2 to 8 8 pH range is an easy and reliable way to read your pH level A pH tester can also measure alkalinity or acidity and ...

Page 21: ...odel Number Solar Collector Company Model of Collectors 30004176 30004189 DB 80 40 GB DB 80 40 EB AET AE 40 MSC 40 1 HTP SS 40 SS 40 FP 30004175 30004188 30004173 30004186 DB 80 64 GB DB 80 64 EB DB 119 64 GB DB 119 64 EB AET AE 32 MSC 32 2 HTP SS 32 SS 32 FP 30004174 30004187 30004172 30004185 DB 80 80 GB DB 80 80 EB DB 119 80 GB DB 119 80 EB AET AE 40 MSC 40 2 HTP SS 40 SS 40 FP 30004171 3000418...

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Page 25: ... ASME installed with the drain back tank assembly in accordance with federal state and local codes 2 Maintain the drain back tank in accordance with the maintenance procedure listed in the manufacturer s provided instructions Preven tive maintenance can help avoid any unnecessary breakdown of the drain back tank and keep the system running at optimum efficiency 3 Maintain all related system compon...

Page 26: ...S Except when specifically prohibited by the applicable state law the Owner and not the Manufacturer shall be liable for and shall pay for all charges for labor or other expenses incurred in the removal repair or replacement of the drain back tank or any component part s claimed to be defective or any expense incurred to remedy any defect in the product Such charges include but are not necessarily...

Page 27: ...tive Distributor Dealer Please insert contact details Customer Installation Record Form The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim After reading the important notes at the bottom of the page please also sign this document Customer s Name Date of Installation Installation Address Product Name Serial Number s Co...

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