Bosch GWH C 920 ES - Page 19

Bosch applications manual | 06.2009BOSCH THERMOTECHNOLOGY CORPORATION
Bosch applications manual
| 19
7.2.4 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
valve
Sink
Standard tub fixture
Flow
direction
Pressure
relief
valve
Bosch GWH 425 PN,
Bosch GWH 425 HN,
Bosch GWH 715 ES,
Bosch GWH C 800 ES,
Bosch GWH C 920 ES
ColdHot
Note: place Ariston close to the point of
use to reduce wait time for hot water.
cold
hot
Cold
Hot
Note:
Drawing is not to scale.
Cold water piping to fixtures not shown for clarity purposes.
Bosch GWH 425 PN,
Bosch GWH 425 HN,
Bosch GWH 715 ES,
Bosch GWH C 800 ES,
Bosch GWH C 920 ES
Ariston Pro GL4Ti
- for pipe runs over
100 ft between
tankless heater
and Ariston, use
GL8Ti