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Bosch C 1210 ES Applications Manual page 21

Bosch therm tankless water heaters
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THERM Tankless Water Heater Applications Manual
9.1.1 830ES, 940ES/ESO, C1050ES, C1210ES/ESC intelligent
cascading with domestic hot water recirculation
For applications with 200ft of pipe or more.
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
hot
cold
hot
Note:
Drawing is not to scale.
BOSCH THERMOTECHNOLOGY CORPORATION
tankless link
cold
hot
Electric
buffer Tank
Domestic hot water
recirculation return line
See Chapter 5 for recirculation pump parameters
tankless link
tankless link
hot
cold
inlet
outlet
tankless link
hot
cold
Symbols
Flow
Timer
direction
Potable
Pressure
water
relief
expansion
valve
tank
Bronze or
Service
Tankless
stainless
valve
link
steel
circulator
Data subject to change without notice | 01.2011
| 21
cold
Flow
check
valve

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