Bosch Appliances 250 SXO NG Freezer User Manual


 
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Appliance details
2 Appliance details
2.1 Features
Parts
Touch 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
Freeze protection.
Safety
Flame sensor (ionization) rod
Overheat sensor
Temperature limiter
Fan speed monitoring.
High Quality Materials for Long Working Life
Copper heat exchanger
High efficiency Ceramat Burner
Compact space saver: mounts on a wall with a
supplied bracket.
Easily removable two-piece cover.
Features
Electronic Ignition
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.
2.2 250 SXO 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 maximum operation*
Propane: 11” - 14” water column
Natural Gas: 5” - 14” water column.
* To measure Gas Pressure, see Measuring Gas
Pressure, chapter 2.9.
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)
Minimum recommended water pressure: 30 PSI
(2.07 bar)
Connections:
Bottom of heater
i
BOSCH is constantly improving its
products, therefore specifications are
subject to change without prior notice.