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Bosch C 1210 ES Applications Manual

Bosch therm tankless water heaters
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THERM Tankless Water Heaters
Applications Manual

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  Summary of Contents for Bosch C 1210 ES

  • Page 1 THERM Tankless Water Heaters Applications Manual...
  • Page 2 THERM Tankless Water Heater Applications Manual BOSCH THERMOTECHNOLOGY CORPORATION Data subject to change without notice | 01.2011...
  • Page 3: Table Of Contents

    5.2 Domestic hot water circulation 5.3 Tank loading 6 Water Heater Sizing & Specifi cations 6.1 Sizing tankless water heaters 6.2 Bosch tankless water heater specifi cations 7 Outdoor Installation 8 Domestic Water Heating Applications 8.1 Low volume applications 8.2 Whole house applications 9 High Volume Potable Water Heating 9.1 Cascading unit applications...
  • Page 4: Introduction

     The following are certifi cation stamps and explanations that are specifi c to one or more Bosch tankless water heaters. These certifi cations bring the appliances in accordance with the requirements of the National Fuel Gas Code ANSI Z223.1/NFPA 54.
  • Page 5: Tankless Water Heater Accessories

    THERM Tankless Water Heater Applications Manual 3 Tankless Water Heater Accessories Available accessories Table 1 C 1210 ES/ C 1050 ES 940 ESO 940 ES 830 ES C 1210 ESC Concentric Vent/air Intake kit - stainless steel √ √ (part#...
  • Page 6: Water Quality

    If water quality exceeds one or more of the values specifi ed below, Bosch recommends consulting a local water treatment professional for water softening/conditioning options. Water quality max. levels...
  • Page 7: Pump Sizing

    5.1 Pressure drop curves 660 EF/EFO C 800 ES, C 920 series, 2400 ES, 830 ES, 2700 ES, C 1050 ES C 1210 series 940ES/ESO GWH 715 ES, Flow (GPM) BOSCH THERMOTECHNOLOGY CORPORATION Data subject to change without notice | 01.2011...
  • Page 8: Domestic Hot Water Circulation

    Example: Tankless water heater setpoint = 122°F Aquastat setpoint = 108°F Keep hot water piping insulated to limit heat loss.  Set temperature on the C 1210 ESC must not exceed 140°F.  BOSCH THERMOTECHNOLOGY CORPORATION Data subject to change without notice | 01.2011...
  • Page 9: Water Heater Sizing & Specifi Cations

    THERM Tankless Water Heater Applications Manual 6 Water Heater Sizing & Specifi cations This section describes the water heaters available from Bosch Thermotechnology Corporation and provides a general overview to the specifi cations of that particular model. More detailed information is contained in the installation manuals. Download these manuals at www.BoschPro.com.
  • Page 10 1 0 | THERM Tankless Water Heater Applications Manual C 1210 ES/ESC C 1050 ES 940 ES/ESO 830 ES 660 EF/EFO 520 PN/HN 330 PN Degree rise (°F) Gas Appliance Sizing Chart • Flows above 10 GPM assume installation of a mixing valve to...
  • Page 11: Bosch Tankless Water Heater Specifi Cations

    (AL29-4C) (Schedule 40) (Schedule 40) NOTE: • C 1210 ES (residential model) has a maximum setpoint temperature of 140°F. • C 1210 ESC (commercial model) has a maximum setpoint temperature of 180°F. BOSCH THERMOTECHNOLOGY CORPORATION Data subject to change without notice | 01.2011...
  • Page 12 AQ4 only with AQ4 not allowed vent kit vent kit Venting diameter (inches) Vent material Stainless steel Type B-vent Type B-vent Type B-vent (AL29-4C) recommended recommended recommended BOSCH THERMOTECHNOLOGY CORPORATION Data subject to change without notice | 01.2011...
  • Page 13: Outdoor Installation

    830 ES  940 ES/ESO  C 1050 ES  C 1210 ES/ESC  Outdoor Kit (BTOK) installation: The installation of this outdoor kit (BTOK) is required when  installing any of the above appliances outdoors. Outdoor cap easily retrofi ts to these indoor models.
  • Page 14: Domestic Water Heating Applications

    THERM Tankless Water Heater Applications Manual 8 Domestic Water Heating Applications Potable water Potable water is water that is suitable for drinking. Bosch Water Heating appliances are approved to heat potable water only. Heating any other liquid other than potable water will void the manufacturer’s warranty covering the appliance.
  • Page 15: Low Volume Applications

    Common applications for these appliances include cottages, cabins, and summer camps. The Bosch THERM 330 PN gas tankless water heater offers a compact and lightweight design for easy installation in these applications. Symbols...
  • Page 16: Whole House Applications

    8.2.1 Bosch gas water heater Below is an example of a basic Bosch gas tankless water heater installation for the whole house. Applicable Bosch Models: Symbols •...
  • Page 17 | 17 8.2.2 Bosch gas water heater with buffer tank Below is an example of a Bosch gas tankless water heater installation for the whole house. An Ariston mini tank is installed in line for reduced hot water wait time and increased temperature stability.
  • Page 18 1 8 | THERM Tankless Water Heater Applications Manual 8.2.3 Bosch gas water heater with domestic recirculation loop The circulator should be controlled by an external aquastat or with a timer to run only during times of expected hot water usage.
  • Page 19 THERM Tankless Water Heater Applications Manual | 19 8.2.4 Bosch gas water heater with direct recirculation loop Use a circulator, aquastat and/or timer, to keep a loop of See Chapter 5.1 for recirculation pump parameters hot water constantly hot and ready to use. This limits wait time for hot water delivery to the tap and excessive waste of water.
  • Page 20: High Volume Potable Water Heating

    9 High Volume Potable Water Heating 9.1 Cascading unit applications Potable water Potable water is water that is suitable for drinking. Bosch Water Heating appliances are approved to heat potable water only. Heating A cascading application should be considered if the potential hot any other liquid other than potable water will void the manfucturer’s...
  • Page 21 • Minimum pipe diameter: 1” (3 appliances or more). • Minimum water pressure: 50 psi. • Insulate pipes to prevent heat loss. Bosch 830 ES, Bosch 940 ES/ESO, Bosch C 1050 ES, or Bosch C 1210 ES tankless link tankless link...
  • Page 22 • Minimum pipe diameter: 1” (3 appliances or more). • Minimum water pressure: 50 psi. • Insulate pipes to prevent heat loss. Bosch 830 ES, Bosch 940 ES/ESO, Bosch C 1050 ES, or Bosch C 1210 ES tankless link tankless link...
  • Page 23: Parallel Unit Applications

    THERM Tankless Water Heater Applications Manual | 23 9.2 Parallel unit applications Two Bosch water heaters plumbed in parallel will have double the fl ow rate. However, the activation rate increases with each unit added in parallel. Example: 1 unit - 0.5 GPM activation rate 2 units - 1.0 GPM activation rate...
  • Page 24: Residential Solar Applications

    Water heater This section gives a general overview of tank loading and in line setpoint booster applications for domestic hot water in conjuction with solar water heating. For additional system details, consult the Bosch C 1210 ESC ≤140°F 14°F above Aqua-...
  • Page 25: Booster Applications

    (recommended but not required) Applicable Bosch Models: •Bosch 830 ES •Bosch 940 ES/ESO Collector •Bosch C 1050 ES sensor •Bosch C 1210 ES/ESC Solar Controller Solar Pump Station Cold Tank Thermostatic...
  • Page 26 See Chapter 5 for recirculation pump parameters Applicable Bosch Models: •Bosch 830 ES •Bosch 940 ES/ESO Collector sensor •Bosch C 1050 ES •Bosch C 1210 ES/ESC Solar Controller Solar Pump Station Cold Thermostatic Tank sensor...
  • Page 27: Commercial Solar Applications

    Honeywell AM101 Thermostatic Valves required for proper  systems in conjuction with solar water heating (e.g. schools, fi tness operation. centers). For additional system details, consult the Bosch Solar For optimal performance, the fl ow through the water heater  Technical Guide.
  • Page 28: Commercial Water Heating Applications

     temperature requirements. When using the super sprayer, hot water draws must be longer than 15 seconds to avoid temperature fl uctuations. Applicable Bosch Models: •Bosch C 1210 ES/ESC, •Bosch C 1050 ES, •Bosch 940 ES/ESO, •Bosch 830 ES Sink...
  • Page 29 12.1.2 Commercial kitchen with domestic hot water recirculation System parameters: For optimum performance in applications involving a commercial  dishwasher, a hot water circulation loop is recommended. See Chapter 5.1 for recirculation pump parameters Applicable Bosch Models: •Bosch C 1210 ES/ESC Cold Water Supply Sink Dish sprayer...
  • Page 30: Basic Tank Loading With Domestic Recirculation

    (as shown) for the entire system * If local codes require higher setpoint or to increase the recovery See Chapter 5.1 and 5.2 for pump parameters capacity of the water heater, contact Bosch Thermotechnology. Applicable Bosch Models: •Bosch 830 ES •Bosch 940 ES...
  • Page 31: Advanced Tank Loading Commercial Hot Water System

    C 1210 ES See Chapter 5.1 and 5.2 for pump parameters * If local codes require higher setpoint or to increase the recovery capacity of the water heater, contact Bosch Thermotechnology. Applicable Bosch Models: •Bosch 830 ES •Bosch 940 ES •Bosch C 1050 ES...
  • Page 32 Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel: 1-866-642-3198 Fax: 1-603-584-1687 www.bosch-climate.us BTC 740001301 B | 01.2011...