Appliance details
2Appliance details
2.1Features
Parts
•Touch Pad interface control
•High power
•Modulating Gas Valve with constant gas:air ratio control
•Modulating water valve for improved comfort and temperature control.
Safety
•Flame sensor (ionization) rod
•Overheat sensor
•Temperature limiter
•Fan speed monitoring.
High Quality Materials for Long Working Life
•Copper heat exchanger
•Ceramic Burner output
•Automatic overheating protection
•Compact space saver: mounts on a wall with a supplied bracket.
•Easily removable
Features
•LCD Display
•On/Off and Temperature control switches
•Reset button
•Program Key (Selectable temperature default)
•Failure codes for easy diagnostic and repair. Accessories
•Optional wireless remote control accessory to operate with the appliance
•Vent termination kit.
BOSCH is constantly improving its
iproducts, therefore specifications are subject to change without prior notice.
2.2250 SX Specifications (Technical data)
Approved in US/Canada
Capacity
Maximum flow rate: 6.35 GPM (24 l/min) at a 45°F (25°C) rise.
Maximum output
142,968 Btu/h (41.8 kW)
Maximum input
175,000 Btu/h (51.2 kW)
Efficiency in %
Recovery efficiency 86.5%
Min. Output
31,131 Btu/h (9.1 kW)
Temperature Control
Selection range: 100°F (38°C) - 140°F (60°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: 11” - 14” water column
•Natural Gas: 5” - 14” water column
•Gas pressure measuring point inside the appliance at the gas valve inlet.
*Testing with a manometer, operate other gas equipment on the same gas supply. Gas pressures lower than 5" W.C. for Natural Gas or 11" W.C. for LPG will result in insufficient degree rise to the hot water being used. See Measuring Gas Pressure, chapter 2.12.
Fig. 3 Gas pressure measuring point
Venting
See chapter 2.9 for Venting on page 9.
Water
•Hot water connection (inches) - ¾”
•Cold water connection (inches) - ¾”
•Water valve material: Polymer (PPS) (Polypropylene Sulfid)
•Minimum water flow: 0.8 gallon/minute (3 l/m)
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