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Appliance details
5
2 Appliance details
2.1 Features
Residential/commercial models
• C 1210 ES residential model
– maximum temperature 140° F
• C 1210 ESC commercial model
– maximum temperature 180° F
Parts
• Key pad interface control
• High power pre-mix compact burner with low NOx
emissions
• Modulating gas valve with constant gas:air ratio
control
• Modulating water valve for improved comfort and
temperature control.
High quality materials for long working life
• Copper heat exchanger
• High efficiency Ceramat Burner
• Compact space saver: mounts on a wall with
supplied bracket.
Features
• Easily removable one-piece cover
• LCD Display with backlight
• On/Off and Temperature control buttons
• Reset button
• Program button (Selectable temperature default)
• Error codes for easy diagnostics and repair
• Real-time diagnostics for troubleshooting/informa-
tional purposes
• Built in freeze prevention.
Note: The freeze prevention kit is designed to provide
protection for the water heater down to approximately
5°F for short term conditions only. It will not protect the
appliance in areas where the temperature is routinely
expected to be below freezing.
- The freeze prevention kit will not protect plumbing out-
side the appliance from freezing. Precautions should be
taken.
Accessories (Bosch part #)
• Optional wireless remote control to operate with the
appliance (TSTAT2)
• Cascading kit (77090003962)
• Outdoor kit (BTOK)
• External water filter (part # 8 703 305 356)
• Concentric termination kit (196016)
• Exhaust/Intake bird screen (L2594)
• Pipe Cover (PTPCES)
• Recess box kit (7736500043)
• Pressure relief valve (FWL-2).
2.2 Specifications (Technical data)
Approved in US/Canada
Capacity
Maximum flow rate: 9.2 GPM (35 l/min) at a 45°F
(25°C) rise. (with sufficient water pressure)
Maximum output
210,000 Btu/h (61.5 kW)
Maximum input
225,000 Btu/h (65.9 kW)
Efficiency in %
Thermal efficiency > 94%
Minimum Input
25,000 Btu/h (7.3 kW)
Temperature Control
C 1210 ES:
• Selection range: 100°F (38°C) - 140°F (60°C).
C 1210 ESC:
• Selection range: 100°F (38°C) - 180°F (82°C).
Default temperature: 122°F (50°C)
Stability: +/- 2°F (+/- 1°C)
Gas Requirement
Gas connection (inches) - ¾"
Inlet gas pressure under operation (with a high hot
water flow rate)*
• Propane: 8" - 13" water column
• Natural Gas: 3.5" - 10.5" water column.
* To measure Gas Pressure, see Measuring Gas
Pressure, chapter 3.14, page 35.
Water
• Hot water connection (inches) - ¾"
• Cold water connection (inches) - ¾"
• Water valve material: Polymer (PPS) (Polypropylene
Sulfid)
• Minimum water flow: 0.5 gallon/minute (1.9 l/m)
Note: Activation varies with inlet water temperatures
from 0.5 - 1.6 gallon/minute (1.9 - 6.1 l/m).
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