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30  –  Part 3: Solar water heater system installation

Gas connection

(VELUX solar water heating system with gas back-up only) 
For installation and operation instructions, refer to the Installation/Operation manual provided with your solar storage tank.  
The Installation/Operation manual for your water heater must be kept with this manual at all times.

!

 DANGER

Do not store or use gasoline or other flammable, combustible, or corrosive vapors and liquids in the vicinity of 

this or any other appliance.

!

 CAUTION

The manufacturer’s warranty does not cover any damage or defect caused by the installation, attachment or use of any type 
of unapproved devices into, onto or in conjunction with this water heater. The use of unauthorized energy saving devices 
may shorten the life of the water heater and may endanger life and property. The manufacturer disclaims any responsibility 
for such loss or injury resulting from the use of such unauthorized devices.

This water heater must be installed in accordance with local codes. In the absence of local codes, it must be installed in 
compliance with the National Fuel Gas Code (ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas 
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition). 

Do not use this appliance if any part has been submerged in water.  Immediately call a qualified service technician to inspect 
the appliance and toreplace any part of the control system and any gas control, which has been  under water. Depending upon 
the individual circumstances, it may be  necessary to replace the entire water heater. 

Summary of Contents for CLI U12 SD0F1110 NG B/U

Page 1: ...I U12 SK0 W L F P 319 HX B U Solar with heat exchanger back up CLI U12 SD0 W L F P 118 AUX EL CLI U12 SK0 W L F P 218 AUX EL CLI U12 SK0 W L F P 318 AUX EL Solar pre heat to electric tank water heater...

Page 2: ...sor connection to pump station controller Page 28 Solar loop and potable water piping insulation and support Page 28 Electrical connection electric backup systems only Page 29 Gas connection gas backu...

Page 3: ...protect against injury you must install the supplied ASSE approved mixing valve in the water system Refer to the instructions supplied with the mixing valve for installation procedures and specificat...

Page 4: ...uid The solar collector is the engine of the VELUX solar water heating system When the sun is shining the heat energy is absorbed by the solar collector and transferred to the heat transfer fluid circ...

Page 5: ...lated with the high quality flexible closed cell insulation provided to minimize heat loss There shall be no exposed piping or fittings The wall thickness of the pipe insulation should not be less tha...

Page 6: ...f air Anti scald mixing valve set to 120 F Systems with electric back up solar tank Power supply voltage agrees with the water heater rating plate Branch circuit wiring and circuit breaker properly si...

Page 7: ...e used for the solar storage tank heat exchanger circuit only Never introduce Anti freeze solution to any other solar storage tank connection other than the solar heat exchanger 3 If there is a check...

Page 8: ...n tank suitable for potable water must be sized and installed within this piping system between the check valve and the cold water inlet of the solar water heater 4 The anti scald mixing valve provide...

Page 9: ...lve on the cold water feed line a thermal expansion tank suitable for potable water must be sized and installed within this piping system between the check valve and the cold water inlet of the solar...

Page 10: ...ther than the solar heat exchanger 3 If there is a check valve on the cold water feed line a thermal expansion tank suitable for potable water must be sized and installed within this piping system bet...

Page 11: ...valve discharge line must be no smaller than the outlet of the valve and must be pitched downward from the valve to allow complete drainage of the relief valve and discharge line The end of the discha...

Page 12: ...ck valves are not installed most of the heated energy stored during the day would be transferred back up into the collectors and lost d Collector array isolation valves Valves located in the hot and c...

Page 13: ...ontroller to measure the temperature on the bottom of the solar storage tank e VELUX flexible piping Pre insulated corrugated stainless steel flexible piping designed specifically for VELUX solar loop...

Page 14: ...uildings and trees should be checked for possible winter shading Collector installation The most important structural consideration is to securely anchor the solar collector to the structural members...

Page 15: ...Part 3 Solar water heater system installation 15 CLI U12 4000 2 Collector layout 16 o c rafters CLI U12 4000 3 Collector layout 16 o c rafters Collector location on 16 o c rafters...

Page 16: ...16 Part 3 Solar water heater system installation CLI U12 4000 2 Collector layout 24 o c rafters CLI U12 4000 3 Collector layout 24 o c rafters Collector location on 24 o c rafters...

Page 17: ...collectors measured to the vertical wall casing Secure collector top support flange to roof deck using three self tapping stainless steel mounting screws provided When possible screws shall be located...

Page 18: ...ided 7 Locate the end of the flexible pipe connected to the bottom left corner of the collector bank this is the heat transfer fluid cold pipe Locate the indicator tab near the end connection Tear off...

Page 19: ...ure sensor Drill a 1 hole alongside the collector flange near the temperature sensor well Route the cable from the cable wall down through the 1 hole 11 Secure the side flanges of the collectors to th...

Page 20: ...ing Contractors Association NRCA or other qualified body 1 Install the bottom pan flashings and gutters and secure in place using metal tabs as referenced in the VELUX flashing instructions Do not dri...

Page 21: ...controller expansion tank mixing valve and other key components The components on the potable side of the system may require future service or maintenance so it is recommended that the connections be...

Page 22: ...idelines for your VELUX solar water heating system could cause component failure and possible safety issues It is mandatory that all plumbing be done in accordance with all local and state codes or wa...

Page 23: ...pansion tank flex connector securely to pump station using pipe tape and the gasket provided Tighten the flexible pipe nut securely 3 Adjust flex connector as needed and attach the other end of expans...

Page 24: ...or hot supply flexible pipe with red tab extend the hot supply past the hot water connection on the pump station remove any excess pipe and prepare the end of the flextube as needed Repeat these steps...

Page 25: ...and the gasket provided 2 Route the flextubes such that the flextube connected to the air separator is connected to the pump station bottom left connection and the flextube connected to the heat exch...

Page 26: ...llation guidelines for your VELUX solar water heating system could cause component failure and possible safety issues It is mandatory that all plumbing be done in accordance with all local and state c...

Page 27: ...onnect 3 4 brass nipples to the mixing valve cold water port C and to the brass tee using pipe tape as shown Tighten both fitting securely 4 Connect the 3 4 copper flexible connector between the mixin...

Page 28: ...bottom sensor brown wire to the terminals marked T2 and connect the tank top sensor gray to the terminals marked T3 polarity does not matter on these connections Replace the system control front cove...

Page 29: ...n attachment or use of any type of unapproved devices into onto or in conjunction with this water heater The use of unauthorized energy saving devices may shorten the life of the water heater and may...

Page 30: ...use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property The manufacturer disclaims any responsibility for such loss or injury resulting f...

Page 31: ...ydamage personal injury or death Provide adequate air for combustion and ventilation An insufficient supply of air will cause recirculation of combustion products resulting in air contamination that m...

Page 32: ...ater Do this by opening the cold water isolation ball valve to the solar tank Inspect all fittings for leaks Purge all air from the potable water system by turning on several hot and cold faucets and...

Page 33: ...the fill pump return hose to the pump station drain valve connector 2 Prime the end suction pump 2 Open the fill valve 1 and drain valve 2 Open the hot 3 isolation valve turning it fully counterclock...

Page 34: ...l indicate the tank bottom temperature P1 will indicate pump speed 0 Off 100 On 2 When temperature T1 is 12 F hotter than T2 the system will begin transfering heat to the solar tank Pump symbol will r...

Page 35: ...cleaning A hissing sound while operating will happen when the element starts to build up deposits that will require cleaning This should be done only by a qualified individual or licensed plumber Ano...

Page 36: ...SONAL INJURY FROM CONTACT WITH HOT WATER AND TO AVOID PROPERTY DAMAGE BEFORE operating lever check to see that a discharge line is connected to the valve directing the flow of hot water from the valve...

Page 37: ...4 F 67 4 42 9 51 6 Absorber K 49 8 41 9 27 8 L 67 7 43 2 51 9 Technical specifications CLR U12 4000 CLI U12 4000 CLI S06 4000 CLI M08 4000 Weight lbs Collector weight 130 130 73 57 Weight w fluid 141...

Page 38: ...mK R Value R 4 VELUX flextubes feature Flexible corrugated stainless steel tubing Pre installed Armaflex HT insulation with UV inhibitors Brass connection fittings Gasket free conical connections ens...

Page 39: ...TFF 080 0205US 4 500 240V 1 2 5 gal 75 gal 24 20 77 gal 73 gal TFF 120 0205US 4 500 240V 1 2 5 gal 115 gal 24 20 105 gal 101 gal Two 4 500 watt elements non simultaneous operation Toxic chemicals such...

Page 40: ...rst hour supply gal 77 rise 90 rise 77 rise 90 rise TFF 060 1205US 2 5 gal 27 gal 13 min 15 min 80 000 BTU HR 144 gal 126 TFF 080 1205US 2 5 gal 37 gal 16 min 18 min 90 000 BTU HR 166 gal 146 TFF 120...

Page 41: ...Vent connection Shipping weight lbs TFF 060 2205US 3 4 NPT 3 4 NPT 4 272 TFF 080 2205US 3 4 NPT 3 4 NPT 4 306 TFF 060 3205US 3 4 NPT 3 4 NPT 4 264 TFF 080 3205US 3 4 NPT 3 4 NPT 4 306 VELUX solar stor...

Page 42: ...ections Vent connection Shipping weight lbs TFF 060 4205US 3 4 NPT 3 4 NPT 3 or 4 281 TFF 080 4205US 3 4 NPT 3 4 NPT 4 336 TFF 060 5205US 3 4 NPT 3 4 NPT 3 or 4 281 TFF 080 5205US 3 4 NPT 3 4 NPT 4 33...

Page 43: ...ximum design pressure 145 psi Maximum temperature sustained 250 F Maximum temperature short term 320 F VELUX solar pump station component technical data Pressure relief valve 87 psi Pressure gauge 0 8...

Page 44: ...elow 73 C 100 F Recommended use temperature range 45 C 50 F to 150 C 325 F Suitable applications single fluid process heating and cooling closed loop water based HVAC applications where propylene glyc...

Page 45: ...physical properties Mists may cause irritation of upper respiratory tract nose and throat Remove to fresh air if effects occur consult a physician Note to physician No specific antidote Supportive car...

Page 46: ...US 1 Pump station controller kit 307354 1 CLI U12 SK0L 219 HX B U Collector CLI U12 4000 2 Flashing system EKL U12 0021E 1 Storage tank TFF 080 1205US 1 Pump station controller kit 307355 1 CLI U12 SK...

Page 47: ...1 Storage tank TFF 060 1205US 1 Pump station controller kit 307354 1 CLI U12 SK0W 219 HX B U Collector CLI U12 4000 2 Flashing system EKL U12 0021E 1 Storage tank TFF 080 1205US 1 Pump station contro...

Page 48: ...em ZFT 101 1 Storage tank TFF 060 1205US 1 Pump station controller kit 307354 1 CLI U12 SK0F 219 HX B U Collector CLI U12 4000 2 Rack system ZFT 101 2 Storage tank TFF 080 1205US 1 Pump station contro...

Page 49: ...U Collector CLI U12 4000 1 Rack system ZFT 100 1 Storage tank TFF 060 1205US 1 Pump station controller kit 307354 1 CLI U12 SK0P 219 HX B U Collector CLI U12 4000 2 Rack system ZFT 100 2 Storage tank...

Page 50: ...gh hot water System undersized Reduce rate of hot water use Defective element Check amperage replace element Defective thermostat or wired incorrectly Check wiring or replace Solar system controller i...

Page 51: ...bar Expansion tank too small Properly size and replace expansion tank System pressure too low Propylene glycol leak in system Check system for leaks and repair Expansion tank too small release of pro...

Page 52: ...r level of freeze protection Valve 1 collector array fill drain valve Warning hot Valve 1 is normally closed When open it is used to charge and drain the solar collector loop piping The heat transfer...

Page 53: ...Maintenance notes 53 Notes Maintenance notes...

Page 54: ...mation Installers name Company Address 1 Address 2 City State Zip Phone number Fax number E mail Installation information Collectors Model number Serial number 1 2 3 4 Tank Gallons Aux Orientation Pit...

Page 55: ...18 AUX EL 2009155B o CLI U12 SK0 W L F P 318 AUX EL 2009155C o CLI U12 SD0 W L F P 118 AUX GAS 2009156A o CLI U12 SK0 W L F P 218 AUX GAS 2009156B o CLI U12 SK0 W L F P 318 AUX GAS 2009156C o CLI U12...

Page 56: ...142 0311 2011 VELUX Group VELUX VELUX logo are registered trademarks VELUX America Inc 450 Old Brickyard Road PO Box 5001 Greenwood SC 29648 5001 Tel 1 866 99 VELUX Fax 1 864 943 2631 www veluxusa com...

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