Lochinvar Squire SSS03 User's Manual
Contents
1. Connect Aquastat to the zone controller for the Indirect Water Heater Zone 3 Adjust Aquastat to the desired temperature Figure 4 2 Wiring for Zone Control a VA x J N N lt r TST1085 TEMPERATURE 4 ADJUSTMENT j I WIRE Y CONNECTIONS g I ZONE CONTROL BOX OR ZONE VALVE i OR ZONE CIRCULATOR AQUASTAT CONTROL SQUIRE EH 74 m 5 Start up and Check out 1 Make sure the system is free of leaks and that air is purged from the system CAUTION 2 Many soldering fluxes contain Zinc Chloride which can cause severe corrosion damage to stainless steel After completing all domestic water connections flush the indirect water heater thoroughly before leaving the installation This is particularly important if the indirect water heater will be unused for an extended period of time after installation Flush the indirect water heater by drawing at least three times its volume from the tank Fix any leaks found before proceeding further Leakage from the boiler piping can result in severe damage to the boiler 3 Make sure that all electrical connections are made correctly and that no exposed high voltage wiring is present 6 Maintenance 4 Sguire Installation amp Operation Manual e Indirect Water Heater Make sure that each zone valve or circulator operates when and only when its thermostat calls for heat Let each zone operate long enough to purge any rem2. Less than S Seconds use any phone in your building Immediately call your gas supplier from a 145 F Less than 3 seconds neighbor s phone Follow the gas supplier s 150 F About 1 1 2 seconds instructions If you cannot reach your gas supplier call 155 F About 1 second the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier Hot Water Can Scald Water heated to temperatures for clothes washing dish washing and other sanitizing needs can A DANGER scald and cause permanent injury Children elderly and infirm or physically handicapped persons are more likely to be poy injured by hot water Never eave them unattended in a bathtub or shower ever allow small children to use a hot water tap or draw their own bath If anyone using hot water in the building fits the above description or if state laws or local codes require certain water temperatures at hot water taps you must take special precautions Use lowest possible temperature setting Install some type of tempering device such as an automatic mixin valve at hot water tap or water heater Automatic mixing valve must be selected an installed according to valve manufacturer s recommendations and instructions Water passing out of drain valves may be extremely hot To avoid injury Make sure all connections are tight Direct water flow away from any person Protection Must Be T
3. death or serious injury A WARNING WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or A CAUTION moderate injury CAUTION CAUTION used without the safety alert symbol indicates a potentially hazardous situation which if not avoided may result in property damage NOTICE NOTICE indicates special instructions on installation operation or maintenance that are important but not related to personal injury or property damage Sguire Installation amp Operation Manual Please read before proceeding A WARNING Installer Read all instructions before A WARNING Failure to adhere to the guidelines on this installing Perform steps in the order given page can result in severe personal injury Have this indirect water heater death or substantial property damage serviced inspected by a qualified service When servicing the indirect water heater technician at least annually Failure to comply with the above could result To avoid severe burns allow the appliance to cool in severe personal injury death or substantial before performing maintenance property damage NOTICE When calling or writing about the appliance Indirect water heater operation Elease have the mdipect water hester model Should overheating occur or gas supply fail to shut off do not turn off or dis
4. function within the part warranty period To obtain the replacement you must turn in the 4 When necessary allow our chosen representative to defective part We do reserve the right to verify any inspect the unit claims of defect by inspection 5 For your reference fill in the Model and Serial NOTE If government regulations require the replacement Number found on the unit s Rating Plate water heater to have features not found on the original water heater you will be required to pay the difference in price represented by the required features Model Number WHAT WILL WE NOT DO Serial Number We will not Date of Installation 1 Repair or replace any water heater or part subject to conditions outlined in What Does This Limited Warranty Not Cover 2 Reimburse any costs associated with repair and or replacement 3 Replace and or repair any water heater without complete model serial number 4 Replace any water heater without prior receipt of actual rating plate from the appliance SAFETY WARNING 4 Water heaters are heat producing appliances and to avoid damage or injury in the event of possible overheating of the outer jacket 1 No materials should be stored against the jacket 2 Care should be taken to avoid unnecessary contact especially by children with the jacket UNDER NO CIRCUMSTANCES SHOULD FLAMMABLE MATERIALS SUCH AS GASOLINE OR PAINT THINNERS BE USED OR STORED IN THE VICINITY OF THE HEATER OR I
5. requires The circulator must be large enough to move the boiler water through the coils The recommended piping for a DHW priority system is depicted in FIG 3 3 on page 8 Multiple Tank Connections Boiler Side Multiple tank installations must be done in the reverse return manner The reason for this is to create the same pressure drop and therefore the same flow through the coil of each tank The boiler manifold piping must be sized so that each coil has the flow rate called for in Table 3A below For example if two tanks are to be manifolded together the circulator and zone piping common to both tanks must be capable of moving 16 GPM 2 x 8 GPM see FIG 3 4 on page 9 Because the pressure drop through tank coils varies from size to size it is hard to predict the flow rate that will be developed through each coil when two tanks of different sizes are placed in the same manifold For this reason it is best not to mix tanks of two different sizes in the same zone if their recovery is critical Table 3A Pressure Drop Values Tube 1 1 4 Model ea Length FT Diameter IN 8 GPM 12 GPM 16 GPM Pressure Drop FT HD 3 A N Sguire Installation amp Operation Manual Indirect Water eater 3 Pi pi NG continued Figure 3 1 Piping Diagram Zoned with Circulators ZONE 2 ZONE 3 ZONE 4 l PRESSURE PRESSURE REDUCING VALVE GAUGE s ee ques BACKFLOW PREVENTER ar ZONE CIRCUL
6. 1 4 201 4 48 485 SSS051 491 4 48 40 30 261 4 10 2 24 40 1 4 655 SSS081 701 4 69 60 34 3 4 29 3 4 10 3 4 21 4 24 1623 4 995 SSS119 65 53 443 4 403 4 12 1 2 21 4 29 59 1275 NOTES 1 1 1 2 NPT ON MODELS SSS081 amp SSS119 RELIEF VALVE CONNECTION HOT WATER OUTLET RECIRCULATION CONNECTION BOILER WATER IN BOILER WATER OUT DRAIN COLD WATER INLET mmo NM 3 4 NPT D 1 NPT SEE NOTE 3 4 NPT 1 NPT AQUASTAT WELL 1 NPT 1 NPT SEE NOTE 2 Pre installation 1 The installation must conform with the instructions in this manual and all applicable local state provincial and national codes laws regulations and ordinances Installations in Canada must conform to B149 1 or B149 2 Installation Codes 2 Be certain the domestic water supply to the tank has physical and chemical characteristics that fall within the limits shown in Table 2A Where questions exist as to the composition of the water on the job a qualified water treatment expert should be consulted CAUTION Water with characteristics outside the limits shown in Table 2A may severely shorten the life of the tank due to corrosion Damage to tanks in such cases is not covered under warranty 3 Read and understand all installation requirements in this manual Table 2A Water Chemistry Requirements Water used in the tank must have characteristics falli
7. 3 5 would result in an unacceptable delay before hot water reaches these distant fixtures Even if all the fixtures are relatively close to the tank the building owner may want hot water at all fixtures as soon as they are opened A solution to this problem is that a pipe runs from the furthest fixture on each branch back to the return of the tank A small bronze circulator is mounted in this line and is wired so as to run continuously A check valve in this line permits flow towards the tank inlet only When no fixtures are drawing water the bronze circulator moves hot water from the tank to the end of the branch just below the last fixture then back to the inlet of the tank via the return pipe When a fixture is opened hot water is already out in the branch very close to the fixture and hot water appears at it almost immediately The check valve prevents cold water in the tank s inlet pipe from passing around the tank and heading directly to the fixture Because hot water is always circulating in the hot water branch the entire branch should be insulated to prevent excessive heat loss Temperature amp Pressure T amp P Relief Valve To reduce the risk of excessive pressures and temperatures in the water heater install temperature and pressure protective equipment required by local codes but no less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains pe
8. ACKFLOW PREVENTER 2 PRESSURE rq GAUGE ale il NNI IL MAKE UP WATER AB SEPARATOR SYSTEM SUPPLY SENSOR TO a SYSTEM a lt FROM LL _ NOT TO EXCEED 4 PIPE DIA OR SYSTEM u SYSTEM A MAXIMUM OF 12 APART BALL VALVE CIRCULATOR ze TYPICAL m BOILER ANTI SCALD CIRCULATOR MIXING VALVE WATER EXPANSION IN TANK DRAIN POINT TYPICAL DOMESTIC HOT WATER CIRCULATOR RECIRCULATION LOOP TANK SENSOR LIMIT UNION DRAIN POINT TYPICAL TYPICAL TEMPERATURE PRESSURE c GAUGE DRAIN PRESSURE RELIEF VALVE BOILER INDIRECT TANK Figure 3 4 Multiple Tank Connections ANTI SCALD BOILER MIXING VALVE COLD CIRCULATOR WATER IN DRAIN POINT TYPICAL DOMESTIC HOT WATER CIRCULATOR RECIRCULATION LOOP TANK SENSOR LIMIT UNION DRAIN POINT TYPICAL TYPICAL TEMPERATURE PRESSURE DRAIN GAUGE KNIGHT SQUIRE SQUIRE PRESSURE BOILER RELIEF VALVE MULTIPLE SQUIRE CONNECTION 3 Piping Domestic Side Piping Basic Domestic Piping Figure 3 5 on page 12 shows typical domestic water piping for a tank All components except the control are provided by the installer The function of the components shown are as follows a Shut off valves recommended Use to isolate the tank for servicing b Backflow Preventer required by some codes Use to prevent water from backing out of the tank in the event that inlet water pressure drops c Expansion Tank
9. ATORS TYPICAL LX mI L NIN Ll Ch MAKE UP WATER SYSTEM SUPPLY SENSOR WHEN USED AIR SEPARATOR T Q EXPANSION TANK _ NOT TO EXCEED 4 PIPE DIA P j ORA MAXIMUM OF 12 APART DRAIN POINT lt TYPICAL N BOILER BALL VALVE Z CIRCULATOR ANTI SCALD TYPICAL 2 MIXING VALVE FLOW CHECK VALVE I RELIEF VALVE ili RECIRCULATION LOOP iji i AQUASTAT UNION TYPICAL TEMPERATURE PRESSURE GAUGE SOLUTION SQUIRE BOILER PRESSURE RELIEF VALVE Sguire Installation amp Operation Manual 3 Piping Figure 3 2 Piping Diagram Zoned with Valves 4 PRESSURE PRESSURE REDUCING VALVE GAUGE ZONE Z2 ZONEZ3 ZONE 4 BACKFLOW Be ps PREVENTER 2 QTY o 1 ae Sa C ZONE VALVES TYPICAL IW NNI II i SYSTEM SUPPLY MAKE UP WATER SENSOR L WHEN USED pi DIFFERENTIAL PRESSURE BYPASS AIR SEPARATOR SYSTEM VALVE IF USED CIRCULATOR we D EXPANSION TANK NOT TO EXCEED 4 PIPE DIA H i ORA MAXIMUM OF 12 APART a DRAIN POINT lt TYPICAL N BOILER BALL VALVE 4L CIRCULATOR ANTI SCALD TYPICAL MIXING VALVE COLD WATER IN I RELIEF VALVE iJ RECIRCULATION LOOP iJ i AQUASTAT UNION TYPICAL TEMPERATURE PRESSURE GAUGE SOLUTION SQUIRE BOILER PRESSURE RELIEF VALVE Sguire Installation amp Operation Manual 3 Piping continued Figure 3 3 Knight Boiler Primary Secondary Piping PRESSURE REDUCING VALVE B
10. N ANY LOCATION FROM WHICH FUMES COULD REACH THE HEATER For your comfort enjoyment and safety please read the enclosed operation instructions carefully amp Lochinvar High Efficiency Water Heaters Boilers and Pool Heaters Lochinvar Corporation 300 Maddox Simpson Pkwy Lebanon TN 37090 615 889 8900 Fax 615 547 1000 www Lochinvar com SS WAR O1 O OG Printed in U S A 17 Notes Notes 19 t Lochinvar S V High Efficiency Water Heaters Boilers and Pool Heaters 300 Maddox Simpson Parkway Lebanon TN 37090 615 889 8900 Fax 615 547 1000 www Lochinvar com Revision Notes Revision B SSS I amp O Rev B reflects edits and additions made to the piping diagrams Revision C SSS I amp O Rev C reflects edits made to the piping diagrams the DHW Tank Sensor AUX and the addition of the warranty Revision D ECO C02870 reflects the addition of the scald chart on page 3 Revision E ECO C02918 reflects tank sensor changes on FIG s 3 3 3 4 and 4 1 on pages 9 and 13 along with the addition of a note on page 13 SSS I O Rev E 3 09 Printed in U S A
11. SSS I O Rev E Installation amp Operation Manual Models SSS031 SSS041 SSS051 SSS081 amp SSS119 Sg t Lochinvar This manual must only be used by a lt qualified heating installer service technician Read all instructions before installing Perform steps in the order given Failure to comply could result in severe personal e injury death or substantial property chinar _ Save this manual for future reference High Efficiency Water Heaters Boilers and Pool Heaters Sguire Installation amp Operation Manual diet Water Heater Contents Hazard definitions 00000 ne eee ee Please read before proceeding nee e ee eee eee 2 Pre Installation 00000 eee 2 3 1 General Information sss enon meee eee g 5 6 6 Boiler Side Piping ene eet ewe ee Domestic Side Piping 5 Start up and Check out ee 12 6 Maintenance 6 cece Hee x5 ewe ee ee we ee eee eee 19 Warranty s sua w um s m sm s wi a ms AR s s AR RR a mim a s s s simi a ee 1617 Revision Notes q sa a nee ee es BACK Cover Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product A DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in
12. UIRE Sguire Installation amp Operation Manual 4 Wiring Indirect Water Heater Sensor Setup Knight Boiler A CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation NOTICE The sensor supplied contains an Auto Reset High Limit 195 F 1 Install the sensor inside the tank as depicted 4 Adjust the tank set point program as follows E a Press the UP or DOWN arrow key to access the 2 Connect the wire leads to the DHW Tank Sensor Menu Screen AUX Con Con pomt on the Knight boiler b Select DHW set point from the Menu Screen and connection board see FIG 4 1 press the ENTER key 3 The Knight boiler will automatically read the sensor c Press the UP or DOWN arrow key to select the and default the tank temperature setting to 125 F desired temperature set point d Once the desired temperature set point is selected press the ENTER key to store the set point Figure 4 1 IDW Controlled Using Tank Sensor r TANK BULBWELL J I KNIGHT LOW VOLTAGE w TERMINAL STRIP 4 BD lt DHW TANK SENSOR AUTO RESET HIGH LIMIT PLACE SENSOR IN TANK BULBWELL amp SNAP CLIP OVER BULBWELL SQUIRE KNIGHT BOILER mW 43mm Sguire Installation amp Operation Manual 4 Wiring IDW Controlled Using Aquastat and Zone Circulator Valve I Install Aquastat to tank Aquastat control TST1085 can be ordered from your local Lochinvar distributor 2
13. aining air from the system Set the indirect water heater to the desired temperature Because hot water presents a scald hazard it is best to set the thermostat at 120 F or lower and raise it only if necessary to provide adequate hot water Re enable the burner and allow the boiler to operate Make sure that the boiler shuts down when the indirect water heater is satisfied The Lochinvar SSS series indirect water heater is an extremely simple device and as such requires very little maintenance There are however several items which should be checked out on an annual or as needed basis to ensure a reliable supply of hot water On an annual basis remove the black cover over the hand hole and make sure the hand hole cover is leak tight Make sure that the rest of the boiler and domestic water piping is free of leaks If there is an oil lubricated circulator in the system make sure it is lubricated as called for by the circulator manufacturer The indirect water heater depends upon the boiler for a source of heat and is therefore only as reliable as the boiler Make sure that the boiler is maintained in accordance with the boiler manufacturer s instructions If a water treatment system is required to keep the water chemistry within the parameters shown in Table 2A see Section 2 Pre Installation make sure that this system is properly maintained 15 amp Lochinvar High Efficiency Water Heaters Boilers a
14. aken Against Excessive Temperature and Pressure Installation of a Temperature amp Pressure T amp P relief valve is required Sguire Installation amp Operation Manual 1 General Information The Lochinvar SSS series indirect water heater FIG 1 1 is I cea Table 1A designed to generate domestic hot water in conjunction with C M ial a hot water boiler using forced boiler water circulation This omponent Materials indirect water heater consists of a 444 Stainless Steel tank in which a smooth 304 stainless steel coil is located Boiler water is pumped through the coil and heats the water in the tank 444 Stainless Steel This tank is not intended for use in pool heating applications or for heating any fluid other than water It is also not Coil 304 Stainless Steel intended for use in gravity hot water heating systems Operating Restrictions Insulation Top Bottom EPS Foam Maximum Allowable Tank Working Pressure 150 psi Insulation Sides EPS Foam Design Hydrostatically Tested to 300 psi Maximum Domestic Hot Water Temperature 190 F Polypropylene Maximum Boiler Water Temperature 210 F Hand Hole Cover Gasket Silicone O Ring Figure 1 1 Lochinvar SSS Series Indirect Water Heater PARTNO A B C D E EA G H I jWT W WATER LBS SSS031 40 1 4 38 3 4 33 27 221 4 93 4 2 1 4 20 1 4 32 3 4 377 SSS041 56 5434 48 291 4 25 1 4 93 4 2
15. ample WHAT IS THE DURATION OF THE IMPLIED WARRANTY Any implied warranty including the warranty of merchantability imposed on the sale of the water heater under the laws of the state of sale are limited in duration to one year from date of original installation HOW DOES STATE LAW RELATE TO THE WARRANTY Some states do not allow 1 Limitations on how long an implied warranty lasts 2 Limitations on incidental or consequential damages The above limitations or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state LIMITED LIFETIME INDIRECT WATER HEATER WARRANTY CONTINUED WHAT WILL WE DO TO CORRECT PROBLEM WHAT SHOULD YOU DO TO KEEP THE WARRANTY IN EFFECT If a defect occurs within the warranty period we will To facilitate warranty service you should 1 Provide a comparable replacement water heater of our manufacture or at our option repair any unit which 1 Follow all instructions enclosed with the product develops a leak in the stainless steel tank or heat exchanger coil within the warranty period To obtain a 2 Retain all bills of sale or receipts for proof of replacement you must have the rating plate from the installation etc defective unit 3 Contact your installer or dealer as soon as any 2 Provide a replacement part or at our option repair problem or defect is noticed any part which fails to
16. connect electrical supply to circulator Instead shut off the gas supply at a location Consider piping and installation when external to the appliance determining appliance location and serial number from the indirect water heater rating plate Any claims for damage or shortage in Do not use this appliance if any part has been under shipment must be filed immediately against water The possible damage to a flooded appliance can be extensive and present numerous safety hazards Any the transportation company by the j appliance that has been under water must be replaced consignee Factory warranty shipped with appliance does not apply to appliances improperly installed or improperly operated The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for A WARNING If the information in this manual is not your applications followed exactly a fire or explosion may result causing property damage personal APPROXIMATE TIME TEMPERATURE injury or loss of life RELATIONSHIPS IN SCALDS This appliance MUST NOT be installed in any location where gasoline or flammable 120 F More than 5 minutes vapors are likely to be present 125 F 1 1 2 to 2 minutes WHAT TO DO IF YOU SMFLL GAS 130 F About 30 seconds Do not try to light any appliance 135 F About 10 seconds Do not touch any electric switch do not 140 F
17. d mixing valve does not eliminate the risk of scalding Set the tank thermostat as low as practical Feel water before bathing or showering f anti scald or anti chill protection is required use devices specifically designed for such service Install these devices in accordance with their manufacturer s instructions Multiple Tank Domestic Water Piping Figure 3 4 illustrates the recommended method of piping the domestic water side of several tanks together All tanks are piped in true parallel Total domestic pipe lengths must be the same from point of tank exit to the common T to ensure an equal draw from each tank Each tank must have its own T amp P valve It is recommended that each tank be equipped with its own isolation valves unions and drains so that one tank may be removed from the system If local codes require a backflow preventer check with the appropriate authority to find out whether one backflow preventer may be used for tanks or each tank must be equipped with its own backflow preventer If each tank must have its own backflow preventer each tank must also have its own expansion tank If a common backflow preventer is permitted an expansion tank must be sized to accommodate the expansion volume of all tanks 3 Pi pi NG continued Domestic Water Piping for Distant Fixtures In some cases the furthest fixture may be quite distant from the tank In such an installation the configuration shown in FIG
18. nd Pool Heaters LIMITED LIFETIME INDIRECT WATER HEATER WARRANTY WHAT DOES THIS LIMITED WARRANTY COVER This limited lifetime warranty covers the stainless steel tank stainless steel heat exchanger coil and component parts for leakage or other malfunction caused by defects in materials and or workmanship It extends to the first buyer and to any subsequent owner s as long as the water heater remains installed at its original place of installation WHAT DOES THIS LIMITED WARRANTY NOT COVER 1 This limited warranty does not cover leakage or other malfunction caused by a Excessive use and specifically non residential use b Defective Installation and specifically any installation which is made D in violation of applicable state or local plumbing housing or building codes or ID without a certified American Gas Association ASME or comparable combination temperature and pressure relief valve or III contrary to the written instructions furnished with this unit c Adverse local conditions and specifically sediment or lime precipitate in the tank or corrosive elements in the atmosphere d Misuse and specifically operation and maintenance contrary to the written instructions furnished with the unit disconnection alteration or addition of non approved components or apparatus operation with fuels or at settings other than those set forth on the rating plate or accidental or other exterior damage 2 This war
19. ng within the following limits e Sguire Installation amp Operation Manual Locating the Tank 1 Figure 1 1 on page 4 shows the weights of all the tanks filled with water Make sure that the location chosen for the tank is capable of supporting it A WARNING Failure to properly support the tank could result in property damage or personal injury 2 Locate the system in a location where a leak in the tank the adjacent piping or an open T amp P valve will not damage the surrounding structure If the area around the desired tank location is highly susceptible to water damage install the tank in a pan with a drain 3 The tank may be located some distance from the boiler provided the zone system is designed to provide the flow called for in Table 3A Pressure Drop Values through the coil Also the further the tank is from the boiler the longer the response of the boiler will be to a call from the tank zone Insulate piping between the boiler and the tank Recommended Clearances The installation location must provide adequate clearances for servicing and proper operation of the water heater A 12 inch vertical clearance is recommended from the top of the water heater A zero clearance is allowed for the sides of the water heater However boiler and servicing clearances must be figured when locating the water heater 3 Piping Boiler Side Piping Figures 3 1 thru 3 3 show typical boiler side piping for seve
20. r greater directed so that hot water flows away from all persons directed to a suitable place for disposal installed so as to allow complete draining of the T amp P relief valve and discharge line terminated within 12 of the floor T amp P relief valve discharge piping must not be excessively long Using more than two 2 elbows or 15 feet of piping can reduce discharge capacity directly connected to a drain Terminate discharge piping within 6 from drain Refer to local codes subject to freezing A WARNING Do not install any valve between T amp P relief valve and tank connection or on T amp P relief valve discharge piping Improper placement and piping of T amp P relief valve can cause severe personal injury death or substantial property damage T amp P relief valve is not intended for constant duty such a relief of pressure due to repeated normal system expansion Correct this condition by installing a properly sized expansion tank in domestic water system Refer to expansion tank manufacturer s installation instructions for proper sizing 11 Sguire Installation amp Operation Manual 3 Piping Figure 3 5 Recommended Domestic Water Piping SHOCK ARRESTOR UNION SHUTOFF VALVE ili im dH ANTI SCALD MIXING VALVE UNION SHUTOFF SHUTOFF VALVE VALVE TO BOILER FROM BOILER T NN L SHUTOFF BACKFLOW VALVE PREVENTOR EXPANSION TANK RECIRCULATION LINE e SQ
21. ral common situations Regardless of which system is used it is imperative that the flow rates called for in Table 3A on page 6 are developed through the coil This requires properly sized piping and a properly sized pump The system shown in FIG s 3 1 thru 3 3 are described below Zone with Circulator to Aquastat This system is like the circulator zone system on a straight heat job except that one of the zones goes to the tank instead of radiation As on any circulator zone system check valves should be installed in each zone to prevent unwanted circulation through zones which are not calling for heat Figure 3 1 on page 7 illustrates typical circulator zone piping Zone with Valve to Aquastat As with the circulator zone system this system is just like a standard heating zone system except that one of the zones is connected to the tank coil as shown in FIG 3 2 The circulator must be large enough to move boiler water through the coil regardless of the flow rate required through the heating zones Sguire Installation amp Operation Manual Indirect Water Heater DHW Prioritization This piping system is designed to provide direct hot water priority over the other zones in the heating system When there is a Domestic Hot Water DHW call for heat the Knight control will shut off the boiler circulator and activate the domestic hot water circulator Once the DHW demand is satisfied the boiler circulator will be readjusted as demand
22. ranty also does not cover a Production of noise taste odors discoloration or rusty water b Damage to surrounding area or property caused by leakage or malfunction c Costs associated with the replacement and or repair of the unit including I any freight shipping or delivery charges II any removal installation or re installation charges III any material and or permits required for installation re installation or repair IV charges to return the defective water heater and or component part to the manufacturer WHAT IS THE PERIOD OF COVERAGE This limited warranty is effective 60 days from the date of manufacture as determined by the serial number Model number and serial number are found on the rating plate affixed to the boiler Stainless steel tanks and stainless steel heat exchanger coils are warranted against leakage and thermal shock for the lifetime of the installation All parts are warranted for one 1 year Any water heater used for other than a single family housing unit will be covered for five years on tank and one year on parts regardless of any other warranty period specified All replacement tanks and parts carry the balance of the original warranty i e if an original five 5 year warranted water heater develops a leak due to defects in materials workmanship after three 3 years the replacement unit is warranted for the balance remaining on the original five 5 year warranty or two 2 year in this ex
23. required when a backflow preventer is used This expansion tank absorbs the increased volume caused by heating water If a backflow preventer is installed this expansion tank is required because the increased water volume will otherwise have no place to go and the T amp P valve will open Use an expansion tank designed for use on domestic water systems Refer to the expansion tank manufacturer s literature for the proper size expansion tank to use If an expansion tank is used do not put NOTICE any valves between the expansion tank and tank inlet d Unions optional Use to disconnect the tank in the unlikely event that this is necessary e Drain required Used to drain the tank for inspection or servicing 10 Sguire Installation amp Operation Manual Tank Piping with a Temperature Limiting Valve Usually the maximum temperature of the outlet water will stay near the setting of the tank control In some cases however hot water usage patterns can cause the outlet water temperature to rise significantly above the control setting The temperature of water going to the fixtures may be more carefully controlled through the use of a thermostatic mixing valve This device blends a controlled amount of cold water with the hot water leaving the tank so that water at a more constant temperature exits the mixing valve Anti scald mixing valve piping is illustrated in FIG s 3 1 thru 3 3 A WARNING An anti scal
24. riodic inspections of production of listed equipment or materials as meeting the requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANSI Z21 22 This valve must be marked with a maximum working pressure of the water heater CAUTION Every Lochinvar Indirect Water Heater must be protected with a T amp P relief valve Determine T amp P relief valve size by the following specifications unless they conflict with local codes SSS031 041 3 4 NPT with an AGA Rating of 100 000 Btu hr SSS051 081 119 3 4 NPT with an AGA Rating of 200 000 Btu hr Sguire Installation amp Operation Manual Indirect Water Heater For proper operation of the T amp P and to prevent the T amp P from activating due to boiler water temperature use a T amp P relief valve with extended element The recommended element length is 8 inches NOTICE The Lochinvar SSS series water heaters will absorb less than 200 000 Btu hr when domestic water outlet temperature is 210 F and boiler water supply temperature is 240 F Listed outputs are based on ASME Section VIII Interpretation VIII 1 86 136 Check with local codes for applicability NOTICE Standard Installation Install the T amp P relief valve in the connection marked Relief Valve T amp P Relief Valve Discharge Piping T amp P relief valve discharge piping must be made of material serviceable for a temperature of 250 F o
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