Applications manual | 25 |
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3.2.4Bosch 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.
Hot 
Cold
Ariston Pro GL4Ti (for pipe runs over 100ft use GL8Ti)
Bosch GWH 715 ES, Bosch GWH C 800 ES, Bosch GWH 425 HN or Bosch GWH 425 PN
Symbols
Potable water | Flow |
expansion tank | check |
| valve |
Bronze circulator sized according to UPC standards
(Taco Bronze 007 or Grundfos
Pressure | Sink | Standard |
relief |
| tub |
valve |
| fixture |
Service | Timer or |
| Flow direction |
valves | Aquastat |
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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.
Drawing # WH2R
CN rev 06/07
Bosch Water Heating | Applications manual 11.2007 |
