Bosch AQUA STAR 2400E LP - Manual (Page 2)

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Index
Index
1 Warning 2
2 Appliance details 4
2.1 Features 4
2.2 2400 E Specifications (Technical data) 4
2.3 Unpacking the 2400 E heater 5
2.4 General rules to follow for safe operation 6
2.5 Dimensions and Minimum installation clearances 7
3 Installation instructions 8
3.1 Introduction 8
3.2 Proper location for installing your heater 8
3.3 Heater placement and clearances 8
3.4 Mounting installation 8
3.5 Combustion air requirements 9
3.6 Venting 11
3.6.1 Vent material and specifications 11
3.6.2 Vent connections 12
3.6.3 Condensate drain tube requirements 13
3.6.4 Room sealed installation (Twin pipe) 13
3.6.5 Vertical terminations 14
3.6.6 Horizontal terminations 15
3.6.7 Exhaust vent configuration examples 18
3.7 Gas piping & connections 19
3.8 Measuring gas pressure 21
3.9 Water connections 22
3.10 Electrical connections 23
3.11 Cascading function 23
3.12 Recirculation application 23
4 Operation instructions 24
4.1 For your safety, read before operating your water heater 24
4.2 Power 24
4.3 Temperature selection 25
4.4 Use of optional remote control accessory 27
4.5 Operation 27
4.6 Reset button 27
4.7 Program button 27
4.8 Locked condition 27
5 Maintenance and service 28
5.1 Annual maintenance 28
5.2 Winterizing for seasonal use 28
5.3 Mineral scale build-up 29
5.4 Adjusting CO2 29
5.5 Control board diagnostics 32
6 Troubleshooting 33
6.1 Introduction 33
6.2 Burners do not ignite when hot water is turned on 33
6.3 Water is too hot 33
6.4 Water is not hot enough 33
6.5 Low water flow/pressure 34
6.6 Hot water temperature fluctuates at tap 34
6.7 Noisy burner/heater during operation 34
6.8 Error code diagnostics 36
7 Electrical diagram 41
8 2400 E Functional scheme 42
9 Interior components diagram and parts list 43
9.1 Interior components 43
9.2 Components diagram 44
9.3 Parts list 45
10 Protecting the environment 46
11 Fifteen Year Limited Warranty 47
1 Warning
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: 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 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.
Warning: Field wiring connections and
electrical grounding must comply with
local codes, or in the absence of local
codes, with the latest edition of the
National Electric Code, ANSI/NFPA 70,
or in Canada, all electrical wiring must
comply with the local codes and the
Canadian Electrical Code, CSA C22.1
Part 1.
Warning: Shock hazard: line voltage is
present. Before servicing the water
heater, unplug power supply cord from
outlet. Failure to do so could result in
severe personal injury or death.
Warning: The heater must be
disconnected from the gas supply
piping system during any pressure
testing of that system at test pressures
equal to or more than 0.5 psig.