Table Of Contents; General - Viessmann SCU224 User Manual

SCU224
Contents
General ..................................................................... 2
Overview ................................................................... 3
1. Installation ........................................................... 4
1.1 Mounting ................................................................................4
1.2 Electrical connection ...........................................................4
1.3 Data communication/ Bus .................................................5
1.4 Terminal allocation in the different system layouts ....6
System layout 1 .....................................................................6
System layout 2 .....................................................................8
System-specific functions ................................................ 10
System layout 3 ...................................................................12
System-specific functions .................................................14
System layout 4 ...................................................................16
System layout 5 ...................................................................18
System layout 6 .................................................................. 20
System layout 7 .................................................................. 22

General

Safety advice:
Please read the following information carefully before
installing and operating the controller. In this way damage
to the solar system caused by wrong installation will be
avoided. Please make sure that the mounting is adapted to
the characteristics of the building, that the local regulations
are respected and is conform with the technical rules.
Please pay attention to the following safety advice in order
to avoid danger and damage to people and property.
Subject to technical change. Errors excepted.
Description of symbols
WARNING! Warnings are indicated with a
warning triangle!
They contain information on how
to avoid the danger described.
Signal words describe the danger that may occur, when it
is not avoided.
Warning means that injury, possibly life-threatening injury,
can occur.
Attention means that damage to the appliance can occur.
Note
Notes are indicated with an information
symbol.
Î Arrows indicate instruction steps that should be
carried out.
2
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System layout 8 ...................................................................24
System-specific functions ................................................ 26
System layout 9 .................................................................. 28
System layout 10 ............................................................... 30
2. Operation and function ................................... 32
2.1 Push buttons....................................................................... 32
2.2 System monitoring display .............................................. 32
2.3 Flashing codes .....................................................................33
3. Commissioning ................................................. 34
4. Channel overview ............................................. 37
4.1 Display channels .................................................................37
4.2 Adjustment channels ........................................................ 39
5. Troubleshooting................................................ 47
5.1 Various: ................................................................................ 48
6. Accessories ........................................................ 50
Impressum .............................................................. 52
Instructions:
Attention should be paid to
• valid national and local standards and regulations
•
respective valid standards and directives
Equipment to be installed and used in accordance with
the rules of the National Electrical Code (NEC) or with
Canadian Electrical Code (CEC), Part I.
These instructions are exclusively addressed to authorized
skilled personnel.
• Only qualified electricians should carry out installation
and maintenance work.
• Initial installation should be carried out by qualified per-
sonnel
Information about the product
Proper usage
The solar controller is designed for use in solar thermal
and heating systems in compliance with the technical data
specified in these instructions.
Improper use excludes all liability claims.
Note
Strong electromagnetic fields can impair the
function of the controller.
Î Make sure the controller as well as the
system are not exposed to strong electro-
magnetic fields.