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14

Installation & Operation Manual

4

Domestic Side (Tank) Piping

EXPANSION

TANK

UNION

(TYPICAL)

SHOCK ARRESTOR

SHUT-OFF VALVE

SHUT-OFF

VALVE

BACKFLOW

PREVENTOR

SHUT-OFF

VALVE

SHUT-OFF

VALVE

ANTI-SCALD

MIXING VALVE

DRAIN

( FIELD SUPPLY)

RECIRCULATION

PUMP

TO BOILER

FROM BOILER

CHECK VALVE

TANK SENSOR/

AQUASTAT

SQUIRE

Figure 4-2 Recommended Domestic Water Piping

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

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Summary of Contents for SIT030

Page 1: ...ld result in severe personal injury death or substantial property damage WARNING Save this manual for future reference SIT I O Rev G 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 ap...

Page 2: ...BEFORE PROCEEDING 3 1 GENERAL INFORMATION Operating Restrictions 4 Single Wall Heat Exchanger 4 2 PRE INSTALLATION Locating the Tank 5 Recommended Clearances 5 3 BOILER SIDE PIPING Zone with Circulator to Aquastat 6 Zone with Valve to Aquastat 6 DHW Prioritization 6 Multiple Tank Connections Boiler Side 6 Table 3A Pressure Drop Chart 6 Table 3B Pressure Drop Values 6 Piping Diagrams 7 10 4 DOMESTI...

Page 3: ...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 WARNING NOTICE WARNING WARNING Hot Water Can Scald Water heated to temperatures for clothes washing dish washing and other sanitiz...

Page 4: ...FPT SEE NOTE 1 2 SIT030 SIT119 PART NO A in B in C in D in E in F in SIT030 SIT040 SIT050 SIT065 SIT080 SIT119 3 1 16 3 1 16 3 5 8 3 5 16 3 5 16 3 5 16 8 3 16 8 3 16 9 1 8 9 1 8 9 1 8 9 3 8 21 3 4 25 1 4 24 7 16 27 15 16 27 15 16 31 11 16 32 1 4 48 1 2 39 3 4 52 1 4 61 3 4 60 1 4 39 1 2 55 9 16 47 1 4 59 7 8 69 3 8 68 3 16 20 20 24 24 24 28 WEIGHT FULL OF WATER lbs 393 515 614 820 921 1268 2 1 1 2...

Page 5: ...oor 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 This appliance must be placed where leakage from the relief va...

Page 6: ...es 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 z...

Page 7: ... EXCEED 4 PIPE DIA OR A MAXIMUM OF 12 APART TANK SENSOR AQUASTAT RELIEF VALVE Y STRAINER DRAIN FIELD SUPPLY HOT WATER OUT ANTI SCALD MIXING VALVE RECIRCULATION PUMP CHECK VALVE DRAIN ZONE 1 ZONE 2 ZONE 3 ZONE 4 Figure 3 1 Piping Diagram Zoned with Circulators Please note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detaili...

Page 8: ...ED SYSTEM CIRCULATOR SYSTEM SUPPLY SENSOR WHEN USED NOT TO EXCEED 4 PIPE DIA OR A MAXIMUM OF 12 APART TANK SENSOR AQUASTAT RELIEF VALVE Y STRAINER DRAIN FIELD SUPPLY RECIRCULATION PUMP CHECK VALVE DRAIN SQUIRE ZONE 1 ZONE 4 ZONE 3 ZONE 2 Figure 3 2 Piping Diagram Zoned with Valves Please note that these illustrations are meant to show system piping concept only the installer is responsible for all...

Page 9: ...AIN POINT TYPICAL MAKE UP WATER FROM SYSTEM BOILER CIRCULATOR SYSTEM CIRCULATOR TO SYSTEM SYSTEM SUPPLY SENSOR DRAIN DRAIN FIELD SUPPLY RECIRCULATION PUMP TANK SENSOR AQUASTAT Y STRAINER RECOMMENDED HOT WATER OUT CHECK VALVE SQUIRE Figure 3 3 Knight Boiler Primary Secondary Piping Please note that these illustrations are meant to show system piping concept only the installer is responsible for all...

Page 10: ... RELIEF VALVE TYPICAL TANK SENSOR AQUASTAT TYPICAL CHECK VALVE SQUIRE SQUIRE BACKFLOW PREVENTER PRESSURE REDUCING VALVE PRESSURE GAUGE AIR SEPARATOR EXPANSION TANK BALL VALVE TYPICAL MAKE UP WATER FROM SYSTEM SYSTEM CIRCULATOR TO SYSTEM SYSTEM SUPPLY SENSOR NOT TO EXCEED 4 PIPE DIA OR A MAXIMUM OF 12 APART Figure 3 4 Multiple Tank Connections Please note that these illustrations are meant to show ...

Page 11: ...e reverse return piping layout see FIG 3 4 Each tank must have its own T 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 wi...

Page 12: ...ter 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 is at 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...

Page 13: ...e discharge capacity directly connected to a drain Refer to local codes subject to freezing WARNING Do not install any valve between the T P relief valve and the tank connection or on the T P relief valve discharge piping Improper placement and piping of T P relief valve can cause severe personal injury death or substantial property damage CAUTION The T P relief valve is not intended for constant ...

Page 14: ... VALVE SHUT OFF VALVE ANTI SCALD MIXING VALVE DRAIN FIELD SUPPLY RECIRCULATION PUMP TO BOILER FROM BOILER CHECK VALVE TANK SENSOR AQUASTAT SQUIRE Figure 4 2 Recommended Domestic Water Piping 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 ...

Page 15: ...ank sensor has a built in high temperature limit set at 194 F NOTICE The sensor supplied contains an Auto Reset High Limit 194 F 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 Connect tank sensor ...

Page 16: ...ontrol 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 INDIRECT TANK AQUASTAT CONTROL TST20016 TEMPERATURE ADJUSTMENT WIRE CONNECTIONS ZONE CONTROL BOX OR ZONE VALVE OR ZONE CIRCULATOR Figure 5 2 Wiring for Zone Control ...

Page 17: ...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 re...

Page 18: ...ts 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 DANGER Plugging the T P relief valve or discharge piping can cause excessive pressure in the water heater resul...

Page 19: ...SIT030 27 0 1 1 1 5 160 183 99 000 14 0 3 9 SIT040 40 0 1 6 0 9 181 208 115 000 14 0 4 5 SIT050 51 6 1 7 0 8 209 255 133 000 14 0 5 3 SIT065 67 0 1 9 0 7 263 327 154 000 14 0 5 7 SIT080 81 5 2 1 0 6 266 347 160 000 14 0 5 7 SIT119 113 4 3 2 0 5 349 459 216 000 14 0 6 5 Table 8A IBR Chart These ratings were obtained with a heat source output and heat source flow rate as listed in the chart using th...

Page 20: ...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 Fill in the Blank Example 40 Gallons for the first 2 people Gals 40 Gals...

Page 21: ... 123331 129574 132764 94115 114116 125111 134044 146207 Boiler Heating Capacity Table 8B First Hour Rating 180 F Boiler Loop Water Knight Boiler First Hour Rating 180 F Boiler Loop Water Knight Boiler SIT065 SIT119 Model SIT065 SIT080 SIT119 Circulator Flow GPM 5 8 12 16 20 5 8 12 16 20 5 8 12 16 20 Domestic Outlet 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115...

Page 22: ...iler Heating Capacity First Hour Rating 180 F Boiler Loop Water Universal Sizing 45 000 295 000 Btu hr Model SIT065 SIT080 SIT119 Circulator Flow GPM 5 8 12 16 20 5 8 12 16 20 5 8 12 16 20 Domestic Outlet 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 45 000 153 128 153 128 163 138 163 138 197 172 197 172 60 000 183 149 183 1...

Page 23: ...Boiler Heating Capacity First Hour Rating 200 F Boiler Loop Water Universal Sizing 45 000 295 000 Model SIT065 SIT080 SIT119 Circulator Flow GPM 5 8 12 16 20 5 8 12 16 20 5 8 12 16 20 Domestic Outlet 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 45 000 150 127 150 127 161 138 161 138 194 171 194 171 60 000 179 148 179 148 18...

Page 24: ...table 8A on page 19 Revision D ECO C05788 reflects new images for section 3 Boiler Side Piping FIG 3 1 3 4 a new 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 ...

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