6 720 644 887
6
Appliance details
• Minimum recommended water pressure: 30 PSI
(2.07 bar)
• Minimum well pressure 40 psi, see page 29.
• Connections:
– Bottom of heater
Combustion
• NOx ≤ 14 Ng/J
(Nanograms of NOx (calculated as NO
2
)
per Joule of heat output)
• CO ≤ 290 ppm (measured)
• CO
2
level set from factory, see chapter 6.5, page 43.
Dimensions
• Depth (in): 11¼" (286 mm)
• Width (in): 17
7
/
8
" (452 mm)
• Height (in): 30½" (775 mm)
• Weight: 88 pounds (40 kg).
Gas types
Natural Gas.
LP Gas.
Voltage
120 V AC (60 Hz) nominal
Amperage
Idle - 40 mA
Operation - ≤ 2.5 A
Noise
45 - 65 db (A)
Safety devices
• Flame failure device (ionization flame rod sensor)
• Overheat prevention (temperature limiter/ECO)
• Outlet temperature sensor
• Backflow temperature sensor
• Exhaust gas temperature sensor.
Water protection
IP X4 (protection against water drops)
2.3 Unpacking the tankless water
heater
Before installing the unit, be certain you have the
correct heater for your type of Gas - Propane or
Natural Gas. Identification labels are found on the
shipping box, and on the rating plate which is located on
the right side panel of the cover.
Fig. 2 Rating plate
A Serial number
B Type of gas
The box includes:
• Tankless water heater
• Bracket for wall hanging the heater
• Exhaust vent adaptor (with 4 screws and gasket
provided)
• Combustion air inlet adaptor (with 3 screws and gas-
ket provided)
• Installation manual (manual can be downloaded from
www.boschpro.com)
• Product registration card.
Please complete and return the enclosed product
registration card.
The tankless water heater is not approved or
designed for:
• Manufactured (mobile) homes, boats or any
mobile installation. (Modular homes are
acceptable for installation).
• Use above 8000 ft A.S.L. altitude (see page 21).
• Outdoor installation without installation of
Outdoor kit (BTOK).
• Applications where inlet water temperature is
higher than 140°F (60°C). A thermostatic
mixing valve must be installed before the
appliance.
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