Lochinvar SQUIRE SIT030 User's Manual
Contents
1. I OR WIRE ZONE VALVE CONNECTIONS OR ZONE CIRCULATOR N XN PSs bc AQUASTAT CONTROL INDIRECT TANK 16 Snuire Installation amp Operation Manual Stainless Si rect 6 Start up and check out 1 Make sure the system is free of leaks and that air is purged from the system Fix any leaks found before proceeding CAUTION further Leakage from the boiler piping can result in severe damage to the boiler 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 3 Make sure that all electrical connections are made correctly and that no exposed high voltage wiring is present 4 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 remaining air from the system 5 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 6 Re enable the burner and allow the2. To Fill the Water Heater Table 3A Pressure Drop Chart To Drain the Water Heater Table 3B Pressure Drop Values 8 PERFORMANCE DATA Piping Diagrams IBR Chart 4 DOMESTIC SIDE TANK PIPING How to Properly Size Your Indirect Water Heater Basic Domestic Piping Performance Data Charts Multiple Tank Domestic Water Piping REVISION NOTES Domestic Water Piping for Distant Fixtures 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 aa indicates an imminently hazardous situation which if not avoided will result in death or serious A WARNING WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury A CAUTION CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or 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 Squire Installation amp Operation Manual Please read before proceeding A WARNING NOTICE A WARNING A DANGER Installer Read all instructions before installing Perf
3. Universal Sizing 45 000 295 000 Btu hr Model SIT065 SIT080 SIT119 To Circulator Flow GPM 20 2 16 Domestic Outlet 115 140 115 140 45 000 60 000 75 000 95 000 115 000 140 000 165 000 195 000 Boiler Heating Capacity 225 000 260 000 295 000 5 9 MAX BTUINPUT 118488 129139 146864 163768 167924 115860 139106 154002 171229 181544 141419 190161 204795 237649 253504 Mi o gt Squire Installation amp Operation Manual eza E at ter Beats 8 Performance data continued Table 8D First Hour Rating 200 F Boiler Loop Water Universal Sizing First Hour Rating 200 F Boiler Loop Water Universal Sizing 45 000 295 000 SITO30 SIT040 SITO50 TT 11 asf silos hes SOO BE E 25225 EE z7 7 SEE 30 2 55555955595 545s SE IE SE EEE First Hour Rating 200 F Boiler Loop Water Universal Sizing 45 000 295 000 SIT065 SIT080 SIT119 eae 15 1 SE 213 213 m G 2s oa m mo 7 20707 n Tsn Ton Sn alz EO EEE 225511 2529 aise 922 202 EE n EE E oss 05 Boiler Heating Capacity Mi 53 Revision Notes Revision A ECO C05265 initial release Revision B ECO C05399 reflects the addition of the Pressure Drop Chart and updates made to the Performance Data Charts Revision C ECO C05587 reflects the update of tables 3A and 3B Pressure Drop charts on page 6 table 4A on page 13 the update of
4. Refer to local codes subject to freezing The Lochinvar SIT series water heaters D t install t the T amp P NOTICE will absorb store less than 200 000 Btu A WARNING a a ae relief valve and the tank connection or on the 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 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 The T amp P relief valve is not intended for constant duty such as relief of pressure A CAUTION Table 4A due to repeated normal system expansion Minimum Relief Valve CSA Rating Correct this condition by installing a properly sized expansion tank in a domestic Model Btu hr water system Refer to the expansion tank manufacturer s installation instructions for SIT030 105 000 proper sizing SIT040 105 000 A WARNING Failure to install and maintain a new listed SIT050 105 000 3 4 X 3 4 T amp P relief valve will release the manufacturer from any claim which SIT065 200 000 might result from excessive temperature and pressures SIT080 200 000 SIT119 200 000 13 Squire Installation amp Operation Manual Seu Sg ad ter 4 Domestic side tank piping Figure 4 2 Recommended Domestic Water Piping SHO
5. CAUTION The heat transfer medium must be water or other nontoxic fluid having a toxicity rating or class of 1 as listed in Clinical Toxicology of Commercial Products 5th edition The pressure of the heat transfer medium must be limited to a maximum of 30 PSIG by an approved safety or relief valve SIT I O Rev H Squire Stainless aaee Water Heater Installation amp Operation Manual Models SIT030 SIT119 This manual must only be used by A WARNING a qualified heating installer service technician Read all instructions before installing Perform steps in the order given Failure to comply could result in severe personal injury death or substantial property damage Save this manual for future reference Contents HAZARD DEFINITIONS Anti scald Valves Mixing Valves PLEASE READ BEFORE PROCEEDING Install Drain Valve 1 GENERAL INFORMATION Temperature and Pressure T amp P Relief Valve Operating Restrictions Table 4A Minimum Relief Valve AGA Rating 13 Single Wall Heat Exchanger 5 WIRING 2 PRE INSTALLATION Indirect Water Heater Sensor Setup Knight Boiler Locating the Tank Install and Connect Tank Sensor Recommended Clearances Indirect Water Heater Controlled Using Aquastat and 3 BOILER SIDE PIPING Zone Circulator Zone with Circulator to Aquastat 6 START UP AND CHECK OUT Zone with Valve to Aquastat 7 MAINTENANCE DHW Prioritization Maintenance Schedule Multiple Tank Connections Boiler Side
6. CIRCULATOR MIXING VALVE DRAIN POINT TYPICAL lt RELIEF VALVE TYPICAL TANK SENSOR AQUASTAT TYPICAL UNION S RECIRCULATION TYPICAL PUMP TEMPERATURE DRAIN CHECK VALVE PRESSURE e GAUGE PPESSURE KNIGHT SQUIRE SQUIRE DRAIN RELIEF VALVE BOILER FIELD SUPPLY NOTICE Please note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes 10 Squire Installation amp Operation Manual 4 Domestic side tank piping Basic domestic piping Figure 4 2 on page 14 shows typical domestic water piping for a tank The function of the components shown are as follows a Shut off valves recommended Used to isolate the tank for servicing b Backflow Preventer required by some codes Used to prevent water from backing out of the tank and into the main potable water supply in the event that inlet water pressure drops c Expansion Tank required for thermal expansion This expansion tank absorbs the increased volume caused by heating water 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 NOTICE If an expansion tank is used do not put any valves between the expansion tank and tank inlet d Unions optional Used to disconnect the tank in the unlikely event that
7. CK ARRESTOR UNION TYPICAL SHUT OFF VALVE SHUT OFF ANTI SCALD AIVE MIXING VALVE TO BOILER FROM BOILER BACKFLOW PREVENTOR EXPANSION TANK TANK SENSOR AQUASTAT CHECK VALVE RECIRCULATION PUMP SQUIRE DRAIN FIELD SUPPLY Please note that these illustrations are meant to show system piping concept only the installer is responsible NOTICE i ER for all equipment and detailing required by local codes 14 5 Wiring Installation amp Operation Manual Indirect water heater sensor setup Knight boiler A CAUTION oka all wires prior to disconnection when servicing controls Wiring errors can cause improper and angerous operation NOTICE The sensor supplied contains an Auto Reset High Limit 194 F Install tank sensor The tank sensor is a dual sensor which controls the temperature of the tank from the boiler see FIG 4 1 The tank sensor has a built in high temperature limit set at 194 F 1 Install the sensor inside the tank as depicted in FIG 5 1 2 Connect the wire leads to the DHW Tank Sensor AUX connection point on the Knight boiler connection board see FIG 5 1 3 The Knight boiler will automatically read the sensor and default the tank temperature setting to 125 F 4 Adjust the tank setpoint program Reference the Knight Installation and Operation Manual for a detailed explanation of the tank setpoint program 1 Connect tank sensor T
8. NECTION 22 5 2 1 1 2 MPT ON MODELS SIT065 119 2 HOT WATER OUTLET La 8 3 4 FPT 1 1 PT E s upu lt D NL AQUASTAT SENSOR WELL 1 MPT 4 C Co T 77 1 MPT SEE NOTE 2 5 me I ye 3 BOILER WATER IN 4 BOILER WATER OUT 5 DRAIN COLD WATER INLET SITO30 SIT119 2 Pre installation 1 The installation must conform to 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 2 Installation Code 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 falling within the following limits Chloride PPM Squire Installation amp Operation Manual Sl Td tate Locating the tank 1 Choose a location for your water heater centralized to the piping syst
9. T050 SIT040 6 00 a FOOTHEAD e 3 8 4 00 2 00 0 00 Table 3B Pressure Drop Values LENGTH SURFACE SIT030 e E am SIT119 PRESSURE DROP FT HD AREA 5 8 12 16 20 GPM GPM GPM GPM GPM Rm E E OS ETS io lt ase ar ae va COIL SQ FT EE oar 90 Ca o oar a ua sme ee e o or pafe Squire Installation amp Operation Manual See Si at tes ates 3 Boiler side piping continued Figure 3 1 Piping Diagram Zoned with Circulators 4 PRESSURE PRESSURE REDUCING VALVE GAUGE ZONE 2 ZONE 3 ZONE 4 i r P BACKFLOW L J is SS PREVENTER Se DO Bg IL l AN LD Ch MAKE UP WATER SYSTEM SUPPLY SENSOR WHEN USED AIR SEPARATOR Ry Q D d L EXPANSION TANK l NOT TO EXCEED 4 PIPE DIA P OR A MAXIMUM OF 12 APART ZONE CIRCULATORS TYPICAL DRAIN POINT TYPICAL Y STRAINER ANTI SCALD BANK VANE MIXING VALVE TYPICAL S FLOW CHECK P VALVE 4 COLD BOILER LA WATER 4 CIRCULATOR L L IN S RELIEF VALVE Iji gt it 24 TANK SENSOR EIA AQUASTAT i ETZI 7 ol UNION _ 8 TYPICAL gt lt j T TEMPERATURE i Ora RECIRCULATION PUMP DRAIN I CHECK VALVE PRESSURE SOLUTION SQUIRE DRAIN RELIEF VALVE BOILER FIELD SUPPLY Please note that these illustrations are meant to show system piping concept only the installer is responsible NOTICE pa for all equipm
10. boiler to operate Make sure that the boiler shuts down when the indirect water heater is satisfied 17 7 Maintenance The Lochinvar SIT 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 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 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 Maintenance Schedule Annual service by a qualified service technician should include the following U Any procedure required by local codes U Verify system pressure Air venting procedure may require adding water to bring boiler system up to pressure typically 12 psig U Manually operate T amp P relief valve at least once a year This will release some hot water A WARNING Before operating a T amp P relief valve make sure no one is in front of or around the T amp P relief valve discharge piping Hot discharge water can cause severe
11. e coil regardless of the flow rate required through the heating zones 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 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 9 Squire Installation amp Operation Manual i 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 3B 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 different sizes in the same zone if their recovery is critical Table 3A Pressure Drop Chart SIT030 119 FRICTION LOSS 12 00 SIT119 10 00 SIT065 amp 080 8 00 SI
12. e to adhere to the guidelines on this page can result in severe personal injury death or substantial property damage When servicing the indirect water heater To avoid severe burns allow the appliance to cool before performing maintenance Indirect water heater operation Should overheating occur or gas supply fail to shut off do not turn off or disconnect electrical supply to circulator Instead shut off the gas supply at a location external to the appliance Do not use this appliance if any part has been under water The possible damage to a flooded appliance can be extensive and present numerous safety hazards Any appliance that has been under water must be replaced 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 your applications APPROXIMATE TIME TEMPERATURE RELATIONSHIPS IN SCALDS 120 F More than 5 minutes 125 F 1 1 2 to 2 minutes 130 F About 30 seconds Water heated to temperatures for clothes washing dish washing and other sanitizing needs can scald and cause permanent injury Children elderly and infirm or physicall permanently injured by hot water fe handicapped persons are more likely to be ever leave them unattended in a bathtub or shower Never allow small children to use a hot water tap or draw their own bath Ifanyone using hot water in
13. em You must also locate the SIT water heater where it will not be exposed to freezing temperatures Additionally you will need to place the water heater so that the controls drain and inlet outlets are easily accessible This appliance must not be installed outdoors as it is certified as an indoor appliance and must also be kept vertical on a level surface 2 Keep distance between boiler and water heater to a minimum to a reduce piping heat loss b provide minimal friction loss 3 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 CAUTION This appliance must be placed where leakage from the relief valve leakage from the related piping or leakage from the tank or connections will not result in damage to the surrounding areas or to the lower floors of the building A water heater should always be located in an area with a floor drain or installed in a drain pan suitable for water heaters Lochinvar shall not be held liable for any such water damage 4 The tank may be located some distance from the boiler provided the pump is designed to provide the flow called for in Table 3B 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 A WARNING Failure to properly support
14. ent and detailing required by local codes NOTICE Please note that the installer is responsible for ensuring DHW prioritization when piped as a zone Squire Installation amp Operation Manual lt lt Sg it Uatn Peas 3 Boiler side piping Figure 3 2 Piping Diagram Zoned with Valves PRESSURE PRESSURE REDUCING VALVE GAUGE ZONE 2 ZONE 3 ZONE 4 moa r r L E sas L Gess BACKFLOW Cy PREVENTER lt ZONE VALVES ae 5 TYPICAL AD SYSTEM SUPPLY MAKE UP WATER SENSOR L WHEN USED Bi DIFFERENTIAL T PRESSURE BYPASS AIR SEPARATOR SYSTEM VALVE IF USED i CIRCULATOR e E N SND EXPANSION TANK _ L NOT TO EXCEED 4 PIPE DIA x B 40 OR A MAXIMUM OF 12 APART HOT DRAIN POINT gaan E ANTI SCALD BALL VALVE Y STRAINER MIXING VALVE TYPICAL Res BOILER WATER IN CIRCULATOR z RELIEF VALVE II b TA is TANK SENSOR U AQUASTAT I el r S lt UNION EL TYPICAL RECIRCULATION TEMPERATURE PUMP PRESSURE CHECK VALVE GAUGE RAN I n SOLUTION PRESSURE BOILER SQUIRE FIELD SUPPLY RELIEF VALVE NOTICE Please note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes NOTICE Please note that the installer is responsible for ensuring DHW prioritization when piped as a zone 8 Squire Installation amp Operation Manual Sade Sgt Ft ter Bestas 3 Bo
15. evices specifically designed for such service Install these devices in accordance with their manufacturer s instructions Install drain valve Drain valve and fittings are supplied by others Standard Installation Install a tee connection at the domestic cold water inlet FIG 4 1 Figure 4 1 Drain Valve Installed 12 Installation amp Operation Manual Temperature amp pressure T amp P relief valve A WARNING For temperatures protection against excessive and pressure install temperature and pressure protective equipment required by local codes This equipment shall not be less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection 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 and the Standard CAN1 4 4 Temperature Pressure Temperature and Pressure Relief Valves and Vacuum Relief Valves The combination temperature and pressure relief valve shall be marked with a maximum set pressure not to exceed the maximum working pressure of the water heater The combination temperature and pressure relief valve shall also have an hourly rated temperature steam BTU discharge capacity not less than shown in Table 4A Install the combination temperature and pressure relief valve into the opening prov
16. hot water faucets to allow air to escape from the system 4 When a steady stream of water flows from the faucets the water heater is filled Close the faucets and check for water leaks at the water heater drain valve combination temperature and pressure relief valve and the hot and cold water connections Water from opened drain valves unions and A WARNING other connections may be extremely hot To avoid severe personal injury death or substantial property damage Tighten all drain hose connections Direct hot water away from all persons To Drain the Water Heater Should it become necessary to completely drain the water heater be sure to follow the steps below 1 Disconnect the power supply to the heat source Consult the plumbing professional or electric company in your area for service 2 Close the cold water supply shutoff valve 3 Open the drain valve on the water heater 4 Open a hot water faucet to allow air to enter the system Drain the water heater if it will be shut off and exposed to freezing temperatures Freezing water will expand and damage the water heater If boiler water contains sufficient antifreeze then only the domestic water needs to be drained If boiler water does not contain sufficient antifreeze the boiler water and the domestic water must be drained If antifreeze is used in the boiler water check concentration Boiler water including additives must be practically non t
17. ided and marked for this purpose on the water heater Squire Installation amp Operation Manual Stainless Sh an Mat 4 Domestic side tank piping continued NOTICE Verify that the combination Standard installation temperature and pressure relief valve complies with local codes If the Install the T amp P relief valve in the connection marked combination temperature and pressure Relief Valve relief valve does not comply with local Sess codes replace it with one that does T amp P relief valve discharge pipin Follow the installation instructions in earns T amp P relief valve discharge piping MUST be made of material serviceable for a temperature of Do not place a valve between the combination T amp P relief 250 F or greater valve and the tank 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 6 of the floor Determine T amp P relief valve size by the following specifications unless they conflict with local codes IT030 040 050 3 4 NPT with a minimum CSA Rating of 105 000 Btu hr T amp P relief valve discharge piping MUST NOT be excessively long Using more than two 2 elbows or IT065 080 119 3 4 NPT with a minimum CSA 15 feet of piping can reduce discharge capacity Rating of 200 000 Btu hr directly connected to a drain
18. iler side piping continued Figure 3 3 Knight Boiler Primary Secondary Piping PRESSURE REDUCING VALVE BACKFLOW rey PRESSURE PREVENTER 5 GAUGE IE NNI Lp ii MAKE UP WATER AIR SEPARATOR SYSTEM SUPPLY SENSOR LT TO lt R FROM SYSTEM e aXe FROM I BALL VALVE SYSTEM TYPICAL CIRCULATOR Y STRAINER RECOMMENDED EXPANSION TANK BOILER CIRCULATOR HOT WATER DRAIN POINT DOMESTIC ANTLSCALD OUT TYPICAL HOT WATER MIXING VALVE CIRCULATOR A COLD UT KI Z a WATER IN TANK SENSOR AQUASTAT CHECK VALVE h lt UNION ET TYPICAL RECIRCULATION TEMPERATURE PUMP PRESSURE KNIGHT SQUIRE DRAIN GAUGE BOILER FIELD SUPPLY DRAIN PRESSURE RELIEF VALVE Please note that these illustrations are meant to show system piping concept only the installer is responsible NOTICE as for all equipment and detailing required by local codes 3 Installation amp Operation Manual Stainless Stat det Ween Squire Boiler side piping Figure 3 4 Multiple Tank Connections PRESSURE REDUCING VALVE BACKFLOW PREVENTER 4 PRESSURE CA GAUGE aS 181 NNI Lp Li MAKE UP WATER AIR SEPARATOR SYSTEM SUPPLY SENSOR r TO 4 TT FROM SYSTEM D bH v SYSTEM 1 ei L T NOT TO EXCEED 4 PIPE DIA UJ m n S SIRCULATOR HEB 2 OR A MAXIMUM OF 12 APART TYPICAL E Y STRAINER RECOMMENDED HOT EXPANSION P WATER TANK q A BOILER DOMESTIC OUT T SIRGULATOR HOT WATER 4 ANTI SCALD x
19. imum working pressure for the vessel tank is 150 psig Table 1A Component Materials 316L Steel Stainless Steel 304L Stainless Steel Squire Installation amp Operation Manual Single wall heat exchanger Uniform plumbing code Single wall heat exchangers are permitted if they satisfy all of the following requirements 1 The heat transfer medium is potable water or contains only substances which are recognized as safe by the U S Food and Drug Administration 2 The pressure of the heat transfer medium is maintained less than the normal minimum operating pressure of the potable water system 3 The equipment is permanently labeled to indicate that only additives recognized as safe by the FDA shall be used in the heat transfer medium Other heat exchanger designs may be permitted where approved by the Administrative Authority Figure 1 1 Lochinvar SIT Series Indirect Water Heater PART NO nN B sO D E F WEIGHT in in in in n n Ep F SIT030 3 1 16 83 16 213 4 321 4 391 2 20 393 SIT040 31 16 83 16 25 1 4 48 1 2 559 16 20 515 fo 9 SITO50 3 5 8 91 8 24716 3934 471 4 24 614 RK J SIT065 35 16 918 2715 16 521 4 5978 24 820 x SIT080 35 16 91 8 2715 16 613 4 693 8 24 921 SIT119 35 16 93 8 3111 16 601 4 683 16 28 1268 w NOTES 1 1 1 2 FPT ON MODELS SIT065 119 1 RELIEF VALVE CON
20. ing This will also determine the flow needed between the Indirect Water Heater and Boiler 20 Squire Installation amp Operation Manual ze Sg tot ter 8 Performance data continued Table 8B First Hour Rating 180 F Boiler Loop Water Knight Boiler First Hour Rating 180 F Boiler Loop Water Knight Boiler Models SIT030 SIT050 SIT030 SIT040 SIT050 L T eE STT Domestic Outlet WB050 K WB080 K WB105 K WB150 Kova l ls S m m 77008 89165 105532 114761 129676 92998 112972 123331 129574 132764 94115 114116 125111 134044 146207 Boiler Heating Capacity First Hour Rating 180 F Boiler Loop Water Knight Boiler SIT065 SIT119 SIT065 SIT080 SIT119 EE Flow Er AEREN m m EE Boiler Heating Capacity gt Squire Installation amp Operation Manual 8 Performance data continued Table 8C First Hour Rating 180 F Boiler Loop Water Universal Sizing First Hour Rating 180 F Boiler Loop Water Universal Sizing 45 000 295 000 Btu hr SIT030 SIT040 SIT050 9 YE ee SE HES HE Circulator Flow 5 GPM 60 000 75 000 95 000 115 000 m e ED 2m oa 2 2 IM ao G baa pr PREM EMEM ESE sar roa 195 000 Boiler Heating Capacity 225 000 260 000 295 000 MAX BTU INPUT 77008 89165 105532 114761 129676 92998 112972 123331 129574 132764 94115 114116 125111 134044 146207 First Hour Rating 180 F Boiler Loop Water
21. orm steps in the order given Have this indirect water heater serviced inspected by a qualified service technician at least annually Failure to comply with the above could result in severe personal injury death or substantial property damage When calling or writing about the appliance Please have the indirect water heater model and serial number from the indirect water heater rating plate Consider piping and installation when determining appliance location Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee Factory warranty shipped with appliance does not apply to appliances improperly installed or improperly operated If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life This appliance MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Hot Water Can Scald Installation and service must be performed by a qualified installer service agency or the gas supplier A WARNING Failur
22. oxic having a toxicity rating or class of 1 as listed in the Clinical Toxicology of Commercial Products A maximum 50 50 mixture of inhibited propylene glycol is recommended Follow the antifreeze manufacturer s instructions A WARNING Do not use automotive ethylene glycol or petroleum based antifreeze Do not use any undiluted antifreeze This can cause severe personal injury death or substantial property damage 8 Performance data Table 8A IBR Chart Indirect Potable Squire Installation amp Operation Manual Sean Sgt Td Wat Squire Indirect Water Heater I B R Rating Minimum Heat Tank Heat Minimum Water Standby Continuous First Hour Output Rate Source Water Heat Source Heater Heat Loss Draw Rating Rating Gal from Friction Volume Model Gal hr Number Gal These ratings were obtained with a heat source output and heat source flow rate as listed in the chart using the parameters of the Domestic Cold Water Inlet at 58 F Domestic Temperature Rise of 77 F and a Boiler Temperature Output of 180 F Other results will be obtained under different conditions Heat Source aa Loss Feet Btu hr W C 183 9 000 140 208 115 000 14 0 255 133 000 14 0 327 154 000 14 0 347 160 000 14 0 459 216 000 14 0 19 Squire Installation amp Operation Manual 8 Performance data How to properly Size Your Indirect Water Heater Use the First Hour Rating FHR to properly size your Indi
23. personal injury or substantial property damage Ll Move operating lever to open position for a few seconds and then move it back allowing it to snap closed After the T amp P relief valve is operated if it continues to release water close the cold water inlet to the water heater immediately Follow the draining instructions and replace the T amp P relief valve If the T amp P relief valve weeps periodically it may be due to thermal expansion Do not plug the T amp P relief valve or discharge piping A DANGER Plugging the T amp P relief valve or discharge piping can cause excessive pressure in the water heater resulting in severe personal injury death or substantial property damage Q Follow instructions on circulator to oil if required LC Check mixing valve valves pipes and fittings for leaks L Check function of the field installed controls and valves See component manufacturer s instructions U Review homeowner s maintenance responsibilities and their frequencies including any not listed in the following section 18 Installation amp Operation Manual Stal Nadel Water Peston Squire Homeowner monthly maintenance to include QO Visually check valves pipes and fittings for leaks Call a qualified service technician to repair leaks To Fill the Water Heater 1 Close the water heater drain valve by turning the knob clockwise 2 Open the cold water supply shutoff valve 3 Open several
24. rect Water Heater The First Hour Rating is the amount of hot water in gallons the heater can supply per hour starting with a tank full of hot water depending on tank capacity source of heat and the size of the burner Estimate your peak hour demand as follows Determine what time of day morning noon evening you use the most hot water in your home Keep in mind the number of people living in your home Use the worksheet below to estimate your maximum usage of hot water during this one hour of the day this is your peak hour demand Note The worksheet does not estimate total daily hot water usage The worksheet example shows a total peak hour demand of 165 gallons therefore this household would need a water heater with a First Hour Rating of no less than 165 gallons Fixture Count Guide To quickly estimate the minimum gallons of hot water required based on a family size number of baths and hot water appliances the First Hour Rating of the Squire must be equal to or exceed the total first hour requirements Peak Hour Demand Worksheet Description 40 Gallons for the first 2 people 10 Gallons for each additional person 20 Gallons for each bath after the first consecutive bath Proceed to pages 21 23 of this manual to locate your Indirect Water Heater and Boiler in the sizing charts Using the First Hour Rating calculated in this worksheet locate your Indirect Water Heater and Boiler along with your First Hour Rat
25. t at the farthest fixture or device so that hot water is supplied upon demand Because hot water is always circulating in the hot water branch the entire branch should be insulated to prevent excessive heat loss 11 Zn Stat Tann Waser Squire 4 Domestic side tank piping Anti scald valves mixing valves Anti scald valves used with water heaters are also called tempering valves or mixing valves An anti scald valve mixes cold water in with the outgoing hot water to assure that hot water reaching a building fixture isat a temperature low enough to be safe ASSE1017 and ASSE1070 certified valves are recommended 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 4 An anti scald mixing valve does not See eliminate the risk of scalding Set the tank thermostat as low as practical Feel water before bathing or showering If anti scald or anti chill protection is required use d
26. the Domestic water piping paragraph on page 11 and the update of Performance data table 8A on page 19 Revision D ECO C05788 reflects new images for section 3 Boiler Side Piping FIG 3 1 3 4 anew image for section 4 Domestic Side Tank Piping FIG 4 2 and the update of the Pressure Drop chart on page 6 Revision E ECO C06035 reflects the update of FIG 1 1 on page 4 to revise listed dimensions Revision F ECO C06300 reflects the update of images and additional CSA cautions on manual cover and Connect tank sensor section added to Wiring on page 15 Ra Lochinvar Revision G ECO C06670 reflects the update of the IBR chart Tish Efficiency Water Heaters Boilers and Pool Heaters information on page 19 300 Maddox Simpson Parkway A eee Revision H ECO C08396 reflects the addition of the First Hour Ratings www Lochinvar com of SIT080 at 20GPM for 115 F to Table 8B on page 21 SIT I O Rev H 07 11 Printed in U S A
27. 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 oe setting Install some type o 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 Taken Against Excessive Temperature and Pressure Installation of a Temperature amp Pressure T amp P relief valve is required 1 General information The Lochinvar SIT series indirect water heater FIG 1 1 is designed to generate domestic hot water in conjunction with a hot water boiler using forced boiler water circulation This indirect water heater consists of a 316L Stainless Steel tank in which a smooth 304L stainless steel coil is located Table 1A Boiler water is pumped through the coil and heats the water in the tank This tank is not intended for use in pool heating applications or for heating any fluid other than water It is also not intended for use in gravity hot water heating systems Operating restrictions Maximum domestic hot water temperature is 194 F Maximum boiler water temperature is 210 F Max
28. the tank could result in property damage or personal injury 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 2 Boiler side piping Figures 3 1 thru 3 4 show typical boiler side piping for several common situations Regardless of which system is used it is imperative that the flow rates called for in Table 3B 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 4 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 system circulator must be large enough to move boiler water through th
29. this is necessary e Drain required Used to drain the tank for inspection or servicing Multiple tank domestic water piping The two pipe reverse return piping uses more pipe than the two pipe direct return piping but the flow is more balanced and even in the two pipe reverse return piping layout see FIG 3 4 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 Domestic water piping for distant fixtures In some cases the furthest fixture may be quite distant from the tank Such an installation 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 To prevent delays return circulation piping with a check valve that allows flow to the inlet of the tank This should be installed on each branch circui
30. urn OFF the power to the unit Use wire strippers to strip one inch of insulation from the ends of each wire that will be spliced Splice the two ends of bare wire by twisting them together with a pair of electrical pliers Turn the pliers three or four times to make a sufficient connection Attach a wire nut at the point where the two wires have been twisted together Twist the wire nut until it fits snugly or until it cannot be twisted any more Wrap the wire nut and the two wires with electrical tape to secure the connection Cover any exposed wiring with electrical tape Figure 5 1 Indirect Water Heater Controlled Using Tank Sensor TANK BULBWELL DHW TANK SENSOR AUTO RESET HIGH LIMIT PLACE SENSOR IN TANK BULBWELL amp SNAP CLIP OVER BULBWELL I I Gj DHW TANK b i SENSOR BO l KNIGHT LOW VOLTAGE I TERMINAL STRIP I l l INDIRECT TANK KNIGHT BOILER 15 Squire Installation amp Operation Manual Saks Si ad ter 5 Wiring Indirect water heater controlled using Aquastat and zone circulator valve 1 Install Aquastat to tank Aquastat control TST20016 can be ordered from your local Lochinvar distributor 2 Connect Aquastat to the zone controller for the Indirect Water Heater Zone 3 Adjust Aquastat to the desired temperature Figure 5 2 Wiring for Zone Control N Z N N N TST20016 TEMPERATURE ADJUSTMENT I ZONE CONTROL BOX
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