Bosch AQUA STAR 250SX LP - Manual (Page 2)

6 720 607 057
2
Index
Index
1 Warning 2
2 Appliance details 4
2.1 Features 4
2.2 250 SX Specifications (Technical data) 4
2.3 Dimensions and Minimum installation clearances 6
2.4 General rules to follow for safe operation 7
2.5 Proper location for installing your heater 7
2.6 Clearances 8
2.7 Mounting installation 8
2.8 Combustion air requirements 8
2.9 Venting 9
2.9.1 Venting options 11
2.10 Gas piping & connections 15
2.11 Gas line sizing 17
2.12 Measuring gas pressure 17
2.13 Water connections 18
2.14 Electrical connections 19
2.15 Operating instructions 19
2.16 For your safety read before operating your water heater 19
2.17 Lighting and operating instructions 19
3 Operation instructions 21
3.1 Power 21
3.2 Temperature selection 21
3.3 Use of remote control accessory 23
3.4 Operation 23
3.5 Reset button 23
3.6 Program button 23
3.7 Locked condition 23
4 Maintenance and service 24
5 Troubleshooting 24
6 Electrical diagram 27
7 250 SX Functional scheme 28
8 Interior components diagram and parts list 29
8.1 Interior components 29
8.2 Components diagram 30
8.3 Parts list 31
9 Special adjustment for measuring and adjusting CO
2
levels 32
9.1 Adjusting the unit 32
9.1.1 CO2 measuring port 32
9.1.2 Selecting adjustment mode 32
10 Protecting the environment 34
11 Twelve Year Limited Warranty 35
1 Warning
Featuring
Electronic Ignition and Power Venting
For your safety
Do not store or use gasoline or other flammable,
combustible or corrosive vapors and liquids in the
vicinity of this or any other appliance.
Warning: If the information in this
manual is not followed exactly. A fire or
explosion may result causing property
damage, personal injury or death.
Warning: Improper installation,
adjustment, alteration, service or
maintenance can cause injury or
property damage. Refer to this manual.
For assistance or additional information
consult a qualified installer, service
agency or the gas supplier.
Upon completion of the installation,
these instructions should be handed to
the user of the appliance for future
reference.
Warning: Carefully plan where you
install the heater. Correct combustion
air supply and flue pipe installation are
very important. If a gas appliance is not
installed correctly, fatal accidents can
result from lack of air, carbon monoxide
poisoning or fire.
Warning: Exhaust gas must be vented
to outside using proper vent material
suitable for category III vent systems
and temperatures up to 480°F. Vent
and combustion air connector piping
must be sealed gas-tight to prevent
possibility of flue gas spillage, carbon
monoxide emissions and risk of fire,
resulting in severe personal injury or
death.
Warning: Place the heater in a location
where water leaks will do NO DAMAGE
to adjacent areas or lower floors.