Technical Data For The Accessory Item; Intended Use; Standard Delivery; Combination Overview - Bosch ISM 1 Installation Instructions Manual

100 | Technical data for the accessory item

2 Technical data for the accessory item
2.1

Intended use

The ISM 1 and ISM 2 modules are designed to
control the components of a solar thermal system
as part of a heating system, using controllers
FW 100, FW 200, FW 500 or FR 100, FR 110.
2.2

Standard delivery

Fig. 1 on page 114 and Fig. 9 on page 116:
1 ISM 1 or ISM 2
2 Screws for securing the top section
3 Jumper in place of connecting a
temperature limiter TB 1
4 Strain relief
5 Cylinder temperature sensor (T2 / T3 / TB
/ TC / T5 / T6 / TF2)
6 Collector temperature sensor (T1 / TA)
7 System temperature sensor (T4 / TD / TF1)
2.3

Combination overview

A variety of solar thermal systems can be created
using the ISM 1 and ISM 2 modules. The
description of solar thermal systems
differentiates between standard systems and
options:
Standard solar thermal systems
System 1: Standard system (solar DHW
•
heating)
System 2: Central heating backup and solar
•
DHW heating
System 3: Central buffer cylinder for central
•
heating backup and solar DHW heating
System 4: Central buffer cylinder for solar
•
DHW heating
6 720 645 355 (2010/09)
System extensions (options)
Option A: 2nd collector array (e.g. east/west
•
orientation)
Option B: Transfer system with two mono
•
mode DHW cylinders
Option C: Priority/secondary system with 2
•
consumers, achieved with:
– p-p: Pump-pump (one pump per
consumer)
– p-v: Pump-valve (one common pump and
one diverter valve)
Option D: External heat exchanger in the solar
•
circuit
Option E: Thermal disinfection of the solar
•
cylinder
Option F: Temperature differential control
•
The required solar thermal system can be created
by combining a standard system with one or
more options.
Depending on the number of sensors
(temperature sensors) and actuators (pumps,
diverter valves) required in the solar thermal
system, one ISM 1 module or one ISM 2 module
is sufficient; otherwise, one ISM 1 module should
be combined with one ISM 2 module.
The configuration of the solar thermal system
also shows the most suitable heating controller:
System 1: FW 100, FW 200, FW 500 or
•
FR 100, FR 110
System 2: FW 200, FW 500
•
System 3+4: FW 500
•
To help visualise the solar thermal systems and
available options, the four standard systems are
shown in Fig. 18 to 23, each with their available
options. Further solar thermal systems can be
created by excluding one or more options.
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