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Unpacking The Gwh 2400 Es Heater - Bosch GWH 2400 ES NG Manual

Temperature modulated with electronic ignition suitable for heating potable water only not approved for space heating purposes
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Appliance details
Unpacking the GWH 2400 ES
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
Serial number
Type of gas
The box includes:
• GWH 2400 ES
• Pressure relief valve (150 psi / 200,000 Btu rating)
• Bracket for wall hanging the heater
• Exhaust vent adaptor (with 4 screws and gasket
• Combustion air inlet adaptor (with 3 screws and gas-
ket provided)
• Installation manual (manual can be downloaded at
• Product registration card
• Energy Guide label.
Please complete and return the enclosed product
registration card.
The GWH 2400 ES is not approved or designed
• Manufactured (mobile) homes, boats or any mobile
installation (modular homes are acceptable for
• Use above 4500ft A.S.L. altitude for LP gas
• Use above 8000 ft A.S.L. altitude for natural gas
appliances (see page 25).
• Outdoor installation without installation of Outdoor
kit (AQOK).
• Space heating purposes.
• Preheated inlet water supply.
To remove front cover
B Loosen the two Philips head screws located on
bottom rear of cover (see Fig. 3).
Fig. 3
Loosen the two screws
B Lift front cover panel upward and remove.
Fig. 4
Removing the front cover
To remove combustion cover (service only)
B Open the four clips and remove the combustion
cover see Fig. 5.
Fig. 5
Remove the combustion cover
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