Applications Manual THERM/GREENTHERM Tankless Water Heaters | 23
Bosch Thermotechnology Corp.
Data subject to change
10.1.1 Intelligent cascading with domestic hot water
recirculation
For applications with 200ft of pipe or more.
Applicable models: Bosch 830 ES, 940 ES, 940 ESO,
C 950 ES, C 1050 ES, C 1210 ES
See Chapter 5.2 for recirculation pump
parameters
System parameters:
f The plumbing must be connected in the reverse return
method with a minimum number of elbows to aid in
balancing pressures between the appliances.
f Locate appliances close together for improved
performance.
— Maximum distance between appliances: 36”.
— Minimum distance between appliances: 1”
f Minimum pipe diameter: ¾” (2 appliances or less)
f Minimum pipe diameter: 1” (3 appliances or more).
f Minimum water pressure: 50 psi.
f Insulate pipes to prevent heat loss.
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