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Applications manual
Application manual | 11.2007
Bosch Water Heating
3.2.3 Bosch ProTankless gas water heater
Below are two examples of Bosch ProTankless gas water heater
installations for the whole house. One example shows an Ariston
mini tank in line for reduced hot water wait time and increased
temperature stability.
Symbols
Service
valves
Sink
Note: This drawing is conceptual in nature and does not address all design, installation or safety considerations.
Additional safety and/or auxiliary equipment may be needed. This diagram is for reference use by officials, designers and licensed installers.
It is expected that installers have adequate knowledge of accepted industry practices for the equipment, procedures, and applications involved.
Drawing is not to scale.
Drawing # WH2
CN revA 10/07
Standard tub fixture
Bosch GWH 715 ES,
Bosch GWH C 800 ES,
Bosch GWH 425 HN or
Bosch GWH 425 PN
Ariston Pro GL4Ti
for pipe runs over
100 ft, use GL8Ti
Hot
Hot
Cold
Cold
Note: place Ariston close to the point of
use to reduce wait time for hot water.
Flow
direction
Note: Cold water piping to fixtures not shown for clarity purposes.
Bosch GWH 715 ES,
Bosch GWH C 800 ES,
Bosch GWH 425 HN or
Bosch GWH 425 PN
Pressure
relief
valve