Installation Manual

6 720 608 542
4
Appliance details
FCC:
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2)
this device must accept any interference received,
including interference that may cause undesired opera-
tion.
Fig. 1
2 Appliance details
2.1 Features
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 a
supplied bracket.
Features
• Real-time diagnostics for troubleshooting/
informational purposes
• LCD Display with backlight
• On/Off and Temperature control switches
• Reset button
• Program button (Selectable temperature default)
• Failure codes for easy diagnostics and repair
• Easily removable one-piece cover
• Built in freeze prevention.
Note: Freeze prevention is not intended to protect
plumbing outside the appliance or to keep the
appliance from freezing for long periods.
Accessories (Bosch part #)
• Optional wireless remote control accessory to
operate with the appliance (TSTAT2)
• Cascading kit (TLINK)
• Outdoor kit (AQOK)
• Gas conversion kit (8719002176)
• Vertical vent kit (ESVVT)
• Horizontal vent kit (AQ3ES
1)
).
Warning: If a relief valve discharges
periodically, this may be due to thermal
expansion in a closed water supply
system. Contact the water supplier or
local plumbing inspector on how to
correct this situation. Do not plug the
relief valve.
HOT
BURN
D A N G E R
Watertemperatureover125°Fcan
causesevereburnsinstantlyor
deathfromscalds.
Children,disabledandelderlyare
athighestriskofbeingscalded.
Seeinstructionmanualbefore
settingtemperatureatwater
heater.
Feelwaterbeforebathingor
showering.
6720608643-16.1AL
1) AQ3 vent kit is compatible with this appliance but
requires the purchase of an additional 12" piece of
straight pipe to meet minimum vent length requirements.
The aluminum flex piping included with this kit is not per-
missible for use with this appliance.
i
BOSCH is constantly improving its
products, therefore specifications are
subject to change without prior notice.