Bosch GWH C 920 ES - Page 24

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Bosch applications manual
Bosch applications manual | 06.2009
BOSCH THERMOTECHNOLOGY CORPORATION
8.1.2 GWH 715 ES, GWH C 800 ES, GWH C 920 ES/ESC cascading
with domestic hot water recirculation
System parameters:
• For applications with 200ft of pipe or less.
See Chapter 5.1 for recirculation pump parameters
cold
hot
hot
cold
Ariston GL8Ti
tankless link
cold
DHW
outlet
Symbols
Service
valves
Pressure
relief
valve
Flow
direction
Tankless
link
Potable
water
thermal
expansion
tank
Note:
Drawing is not to scale.
cold
hot
cold
hot
tankless link
tankless link
Bosch GWH 715 ES, Bosch GWH C 800 ES, or Bosch GWH C 920 ES/ESC
DHW
outlet
DHW
outlet
Flow
check
valve
Bronze or
stainless
steel
circulator
Domestic hot water
recirculation return line
Aquastat
Timer