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Bosch C 1210 ES Applications Manual page 22

Bosch therm tankless water heaters
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9.1.2 830ES, 940ES/ESO, C1050ES, C1210ES/ESC intelligent
cascading with domestic hot water recirculation
For applications with 200ft of pipe or less.
System parameters:
• The plumbing must be connected in the reverse return method
with a minimum number of elbows to aid in balancing
pressures between the appliances.
• Locate appliances close together for improved performance.
- Maximum distance between appliances: 36".
- Minimum distance between appliances: 1".
• Minimum pipe diameter: ¾" (2 appliances or less).
• Minimum pipe diameter: 1" (3 appliances or more).
• Minimum water pressure: 50 psi.
• Insulate pipes to prevent heat loss.
Bosch 830 ES, Bosch 940 ES/ESO, Bosch C 1050 ES, or Bosch C 1210 ES
tankless link
hot
cold
DHW
outlet
DHW
outlet
Note:
Drawing is not to scale.
Data subject to change without notice | 01.2011
tankless link
tankless link
hot
cold
Ariston GL8Ti
DHW
outlet
Domestic hot water
recirculation return line
THERM Tankless Water Heater Applications Manual
See Chapter 5.1 for recirculation pump parameters
tankless link
hot
cold
BOSCH THERMOTECHNOLOGY CORPORATION
hot
cold
cold
Symbols
Potable
Pressure
water
relief
thermal
valve
expansion
Flow
tank
check
Bronze or
valve
stainless
Service
steel
valves
circulator
Flow
Aquastat
direction
Tankless
Timer
link

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