Application's Manual

Data subject to change without notice | 01.2011
BOSCH THERMOTECHNOLOGY CORPORATION
THERM Tankless Water Heater Applications Manual
22
|
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.
Ariston GL8Ti
tankless link
cold
DHW
outlet
Note:
Drawing is not to scale.
tankless link
tankless link
cold
hot
cold
hot
DHW
outlet
DHW
outlet
Domestic hot water
recirculation return line
Symbols
Service
valves
Pressure
relief
valve
Flow
direction
Tankless
link
Potable
water
thermal
expansion
tank
Flow
check
valve
Bronze or
stainless
steel
circulator
Aquastat
Timer
Bosch 830 ES, Bosch 940 ES/ESO, Bosch C 1050 ES, or Bosch C 1210 ES
hot
cold
cold
hot
tankless link
See Chapter 5.1 for recirculation pump parameters