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 Solar water heating systems

 Installation • Operation • Maintenance 

The solar energy system described in this manual, when properly installed and maintained, 

meets the minimum standards established by the SRCC.

This certifi cation does not imply endorsement or warranty of this product by SRCC.

CLI U12 SD0(W/L/F/P)118 El B/U
CLI U12 SK0(W/L/F/P)218 El B/U
CLI U12 SK0(W/L/F/P)318 El B/U

Solar with electric element back-up

CLI U12 SD0(W/L/F/P)119 HX B/U
CLI U12 SK0(W/L/F/P)219 HX B/U
CLI 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

CLI U12 SD0(W/L/F/P)118 AUX GAS
CLI U12 SK0(W/L/F/P)218 AUX GAS
CLI U12 SK0(W/L/F/P)318 AUX GAS

Solar pre-heat to gas tank water heater

CLI U12 SD0(W/L/F/P)1110 NG B/U
CLI U12 SK0(W/L/F/P)2110 NG B/U

Solar with natural gas back-up

CLI U12 SD0(W/L/F/P)118 AUX TLG
CLI U12 SK0(W/L/F/P)218 AUX TLG
CLI U12 SK0(W/L/F/P)318 AUX TLG

Solar pre-heat to tankless gas water heater

CLI U12 SD0(W/L/F/P)1111 LP B/U
CLI U12 SK0(W/L/F/P)2111 LP B/U

Solar with propane back-up

Summary of Contents for CLI U12 SD0(W/L/F/P) 118 El B/U

Page 1: ...X B U CLI 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 wate...

Page 2: ...or temperature sensor connection to pump station controller Page 23 Expansion tank installation Page 23 Boiler back up heat exchanger connection Page 24 Boiler loop circulator sizing Page 24 Boiler lo...

Page 3: ...ury To 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 spec...

Page 4: ...ectors collector ashings solar loop pipe and ttings solar storage tank solar pump station and controller temperature sensors expansion tank microbubble air separator mixing valve and non toxic propyle...

Page 5: ...rovided to minimize heat loss There shall be no exposed piping or ttings The wall thickness of the pipe insulation should not be less than To the extent possible slide the insulation material over the...

Page 6: ...rly purged of air Relief valve Temperature and pressure relief valve properly installed and discharge line runs to open drain Discharge line is not exposed to freezing temperatures Discharge line is c...

Page 7: ...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 valve on the cold water feed line...

Page 8: ...ter 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 water heater 4 The...

Page 9: ...roduce Anti freeze solution to any other solar storage tank connection other than the solar heat exchanger 3 If there is a check valve on the cold water feed line a thermal expansion tank suitable for...

Page 10: ...hould be approved for hot water distribution The 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 reli...

Page 11: ...convective heat loss at night when the system is not operating If check valves are not installed most of the heated energy stored during the day would be transferred back up into the collectors and l...

Page 12: ...ctor d Tank temperature sensor The tank sensor is wired to the solar controller to measure the temperature on the bottom of the solar storage tank e VELUX exible piping Pre insulated corrugated stainl...

Page 13: ...round Adjacent buildings 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 st...

Page 14: ...3 Solar water heater system installation Collector location on 16 o c rafters 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...

Page 15: ...r location on 24 o c rafters Part 3 Solar water heater system installation 15 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...

Page 16: ...ace between collectors measured to the vertical wall casing Secure collector top support ange to roof deck using four self tapping stainless steel mounting screws provided When possible screws shall b...

Page 17: ...n and tape provided 7 Locate the end of the exible pipe connected to the bottom left corner of the collector bank this is the heat transfer uid hot pipe Locate the indicator tab near the end connectio...

Page 18: ...sor and route sensor cable along side of collector through the roof opening for the hot pipe Drill a 1 hole alongside the collector ange between the sensor port and the hot pipe Route the cable throug...

Page 19: ...ith National Roo ng Contractors Association NRCA or other quali ed body 1 Install the bottom pan ashings and gutters and secure in place using metal tabs as referenced in the VELUX ashing instructions...

Page 20: ...e service or maintenance so it is recommended that the connections be made with brass unions You must use the VELUX pipe and ttings in plumbing the solar loop for the solar storage tank and the expans...

Page 21: ...r 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 warranty will be void It Is also nec...

Page 22: ...onnect the gasket end of one of the ZFM 002 exible pipes to the bottom left connection hot pipe of the pump station controller Route the pipe to the top connection of the tank heat exchanger and cut t...

Page 23: ...rol panel front cover for access to the temperature sensor terminal blocks Connect the collector temperature sensor cable ends to the terminals marked S1 polarity does not matter on these connections...

Page 24: ...e boiler The return from heating loop should have a ow check or swing check valve installed before the return pipe from the boiler heat exchanger Boiler loop circulator sizing The boiler back up circu...

Page 25: ...ter 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 resu...

Page 26: ...rt 1 Insulate all exposed solar loop and potable water connections and piping The cold water supply line to the solar storage tank must be insulated with a minimum 1 2 pipe insulation to a minimum dis...

Page 27: ...ith a combination thermostat and high limit safety If for any reason the water temperature becomes excessively high the high limit control ECO breaks the circuit to the heating element Once the switch...

Page 28: ...ll valve 2 Connect a hose to the drain valve 3 and place the other end of the hose in the empty bucket Prime the end suction pump 2 Open the ll and drain valves Turn the hot 4 and cold 5 line isolatio...

Page 29: ...and pre heat systems 2 Change to boiler backup boiler back up systems only Depress the Set button 3 so that Set is displayed Scroll forward until Arr 2 is shown Depress the Set button 3 so that progr...

Page 30: ...y need 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 quali ed individual or licensed plumbe...

Page 31: ...if the waterways are clear PRECAUTIONS MUST BE TAKEN TO AVOID PERSONAL INJURY FROM CONTACT WITH HOT WATER AND TO AVOID PROPERTY DAMAGE BEFORE operating lever check to see that a discharge line is con...

Page 32: ...ight lbs Collector weight 130 73 57 Weight w uid 141 79 64 Collector area sq ft Gross area 27 1 15 2 12 5 Aperture area 23 1 12 4 9 8 Absorber area 23 4 12 6 10 0 Fluid volume gal 0 58 0 34 0 24 Max o...

Page 33: ...cations Max operating pressure psi 100 External diameter pipe mm 21 8 Internal diameter pipe mm 16 3 External diameter insulation mm 47 8 Liquid volume L m 0 24 Material pipe Stainless steel AISI 316...

Page 34: ...l 60 gal 24 20 66 gal 62 gal 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 o...

Page 35: ...iler output for test recovery First 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...

Page 36: ...e water connections 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...

Page 37: ...Amp Maximum 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 ga...

Page 38: ...50 C 60 F and burst protection to below 73 C 100 F Recommended use temperature range 45 C 50 F to 150 C 325 F Suitable applications single uid process heating and cooling closed loop water based HVAC...

Page 39: ...minimal due to 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 speci c antidote...

Page 40: ...000 1 Flashing system EDL U12 0000 1 Storage tank TFF 060 1205US 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 TF...

Page 41: ...9 HX B U Collector CLI U12 4000 1 Flashing system EDL U12 0000 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...

Page 42: ...5 1 CLI U12 SD0F 119 HX B U Collector CLI U12 4000 1 Rack system 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 syst...

Page 43: ...5 1 CLI U12 SD0P 119 HX B 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 syst...

Page 44: ...e collector supply 1 2 307342 Ball valve w check valve collector return 1 3 307343 Safety valve and pressure gauge assy 1 4 307344 Deaerator 1 5 307345 Circulation pump 1 6 307346 Gasket 1 2 2 7 30734...

Page 45: ...eter Not enough 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...

Page 46: ...0 psi 2 8 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 relea...

Page 47: ...provide a lower level of freeze protection Valve 1 collector array ll drain valve Warning hot Valve 1 is normally closed When open it is used to charge and drain the solar collector loop piping The h...

Page 48: ...48 Maintenance notes Notes Notes Maintenance notes...

Page 49: ...aller information 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 Orie...

Page 50: ...142 0108 2008 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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