Ism2 Solar Module - Bosch Greenstar 57 Manual

8 | Bosch Greenstar

1.5 ISM2 Solar Module

The ISM2 module controls the components of a solar
thermal system. Integration of solar thermal with a boiler
and central heating system for backup brings additional
benefi ts as it allows minimizing boiler run time and
reduces burner starts signifi cantly compared to a non-
integrated system.
Combination overview
With the ISM2 module, it is possible to realize a variety of
solar thermal systems.
Basic solar thermal systems
 System 1 : Solar thermal DHW heating
System 2 : Solar thermal DHW heating and space

heating support
System expansions
Option A : Two collector arrays (east/west orientation)

 Option B : Reloading system with two single coil DHW
tanks
 Option C : First/second priority system with 2 tanks,
realized with
— p-p : a separate pump for each tank
— p-v : common pump and diverter valve
 Option D : External heat exchanger on the solar circuit
Option E : Thermal disinfection of the solar tank

Combine a basic system with one or several options to
realize the desired solar system.
This manual shows basic solar thermal DHW systems only.
For information on all options, please consult the Installa-
tion and Service Manual.
Data subject to change
Applications Manual
Bosch Thermotechnology Corp.