1. DL manuals
  2. Squire
  3. Boiler
  4. SDT065
  5. Installation & operation manual

Squire SDT065 Installation & operation manual - Domestic Side (Tank) Piping

Manual is about: Solar Dual Coil Tank Solar Electric Tank

Summary of SDT065

  • Page 1

    Installation & operation manual models: sdt/set065 - 119 this manual must only be used by 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 pro...

  • Page 2: Hazard Definitions

    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. 2  danger  warning  caution caution notice danger indicates an imminently hazardous s...

  • Page 3

    Sdt/set installation & operation manual please read before proceeding installer – read all instructions before installing. Perform 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 coul...

  • Page 4: General Information

    1 general information the lochinvar sdt/set series indirect water heater (fig. 1-1) is designed to generate domestic hot water in conjunction with a solar panel using forced circulation with a backup heat source. This indirect water heater consists of a 316l stainless steel tank in which a smooth 30...

  • Page 5: Pre-Installation

    5 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 th...

  • Page 6

    6 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 ...

  • Page 7

    Sdt/set installation & operation manual 7 solar coil 0.00 2.00 4.00 8.00 sdt / set065 - 080 friction loss 10.00 boiler coil 6.00 hd ft/ solar coil boiler coil 0.00 2.00 4.00 6.00 8.00 10.00 5 8 12 16 20 ft/ hd sdt / set065 - 080 friction loss gpm table 3a pressure drop chart sdt/set065-080 table 3c ...

  • Page 8

    Sdt/set installation & operation manual 8 solution boiler squire cold water in temperature / pressure gauge air separator ball valve (typical) union (typical) pressure relief valve drain point (typical) make up water boiler circulator backflow preventer pressure reducing valve pressure gauge expansi...

  • Page 9

    Sdt/set installation & operation manual 9 solution boiler squire cold water in temperature / pressure gauge air separator ball valve (typical) union (typical) pressure relief valve drain point (typical) make up water boiler circulator backflow preventer pressure reducing valve pressure gauge expansi...

  • Page 10

    Sdt/set installation & operation manual 10 knight boiler domestic hot water circulator backflow preventer pressure reducing valve pressure gauge anti-scald mixing valve cold water in temperature / pressure gauge air separator expansion tank ball valve (typical) union (typical) pressure relief valve ...

  • Page 11

    Sdt/set installation & operation manual 11 pressure reducing valve pressure gauge backflow preventer make up water air separator system supply sensor to system ball valve (typical) system circulator systen circulator expansion tank drain point (typical) union (typical) temperature/ pressure gauge dr...

  • Page 12: Domestic Side (Tank) Piping

    Sdt/set installation & operation manual 12 4 domestic side (tank) piping basic domestic piping figure 4-2 on page 15 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. Back...

  • Page 13: Domestic Side (Tank) Piping

    Sdt/set installation & operation manual 13 4 domestic side (tank) piping (continued) temperature & pressure (t&p) relief valve for protection against excessive temperatures and pressure, install temperature and pressure protective equipment required by local codes, but not less than a combination te...

  • Page 14: Domestic Side (Tank) Piping

    Sdt/set installation & operation manual 14 notice verify that the combination temperature and pressure relief valve complies with local codes. If the combination temperature and pressure relief valve does not comply with local codes, replace it with one that does. Follow the installation instruction...

  • Page 15: Domestic Side (Tank) Piping

    Sdt/set installation & operation manual 15 expansion tank union (typical) shock arrestor shutoff valve shutoff valve backflow preventor shutoff valve shutoff valve anti-scald mixing valve drain ( field supply) recirculation pump to boiler from boiler check valve boiler tank sensor/ aquastat squire t...

  • Page 16: Wiring

    Sdt/set installation & operation manual reset button thermostat dial pointer thermostat protective cover 16 5 wiring electrical connection (squire solar water heater with electric back up only -- set models only) be sure to ground the water heater. The preferred way to ground is to use rigid metal c...

  • Page 17: Wiring

    5 wiring (continued) 17 figure 5-2 combination thermostat and high limit control, set 065-set119 rd bk gr rd bk bk rd service ground screw ground screw high limit element thermostat line voltage field supplied factory installed set wiring (single element) model volts / phase watts / amps breaker typ...

  • Page 18: Wiring

    Sdt/set installation & operation manual 5 wiring indirect water heater sensor setup (knight boiler) label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.  caution dhw tank sensor / auto reset high limit (place sensor in tank bulbwe...

  • Page 19: Wiring

    Sdt/set installation & operation manual 19 5 wiring (continued) indirect water heater controlled using aquastat and zone circulator / valve indirect tank temperature adjustment zone control box or zone valve or zone circulator wire connections solar sensor (field supplied) boiler aquastat control ts...

  • Page 20: Start-Up and Check-Out

    Sdt/set installation & operation manual 20 6 start-up and check-out 1. Make sure the system is free of leaks and that air is purged from the system. Caution fix any leaks found before proceeding further. Leakage from the boiler piping can result in severe damage to the boiler. 2. Many soldering flux...

  • Page 21: Maintenance

    Sdt/set installation & operation manual 7 maintenance make sure that the rest of the solar, 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 boile...

  • Page 22: Performance Data

    Sdt/set installation & operation manual 22 8 performance data table 8b sdt backup recovery performance how to properly size your indirect water heater use the first hour rating (fhr) to properly size your indirect water heater. The fhr is the amount of hot water (in gallons) that the water heater ca...

  • Page 23: Performance Data

    Sdt/set installation & operation manual table 8d first hour rating - 180°f boiler loop water (universal sizing. Upper coil sdt models) first hour rating - 180°f boiler loop water (universal sizing - 45,000 - 295,000 btu/hr / sdt065-sdt119) boiler supply water 180 180 180 circulator flow gpm 5 8 12 1...

  • Page 24: Performance Data

    Sdt/set installation & operation manual table 8e first hour rating 200°f boiler loop water (universal sizing, upper coil sdt models) first hour rating - 200°f boiler loop water (universal sizing - 45,000 - 295,000 btu/hr / sdt065-119) boiler supply water 200 200 200 circulator flow gpm 5 8 12 16 20 ...

  • Page 25: High Output Piping

    Sdt/set installation & operation manual 25 9 high output piping high domestic hot water usage when a large amount of hot water is required by a domestic hot water system, the dual coil indirect water heater can be piped together when given the high volume needed to satisfy the high load demands. Thi...

  • Page 26: High Output Piping

    Sdt/set installation & operation manual 26 9 high output piping pressure reducing valve pressure gauge backflow preventer make up water system supply sensor air separator to system ball valve (typical) system circulator expansion tank drain point (typical) from system cold water in anti-scald mixing...

  • Page 27: High Output Piping

    Sdt/set installation & operation manual 27 9 high output piping (continued) backflow preventer pressure reducing valve pressure gauge make up water system supply sensor air separator to system from system hot water out not to exceed 4 pipe dia. Or a maximum of 12” apart y-strainer (recommended) boil...

  • Page 28

    Revision notes: revision a (eco c05788) initial release. Revision b (eco c05936) reflects the addition of “high output piping” section on pages 25-27, series and parallel piping diagrams on pages 26-27, and new friction loss charts for sdt series and parallel on pages 26 and 27. Revision c (eco c063...