Bosch GWH 715 ES Applications Manual page 25

Applications manual
3.2.4 Bosch ProTankless gas water heater with domestic
recirculation loop
The circulator should be controlled by an external aquastat, or with
a timer to run only during times of expected hot water usage.
Ariston Pro GL4Ti
(for pipe runs over
100ft use GL8Ti)
Potable water
expansion tank
Bronze circulator sized
according to UPC standards
(Taco Bronze 007 or Grundfos 15-42B
will cover most homes up to 3 bathrooms)
Note: Cold water piping to fixtures not shown for clarity purposes.
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.
Bosch Water Heating
Symbols
Flow
Pressure
check
relief
valve
valve
Service
valves
Hot
Bosch GWH 715 ES,
Bosch GWH C 800 ES,
Bosch GWH 425 HN or
Bosch GWH 425 PN
Sink
Timer or
Flow direction
Aquastat
Drawing # WH2R
Applications manual | 11.2007
| 25
Cold
Standard
tub
fixture
CN rev 06/07