Viessmann SM1 Guide rapide

Installation and service

instructions

for contractors

VIESMANN

Solar control module

Type SM1

for wall mounting, part no. 7429 073

Solar control module

5724 071 GB 2/2010 Please keep safe.

Please follow these safety instructions closely to prevent accidents and mate-

rial losses.

Safety instructions explained

Danger

This symbol warns against the

risk of injury.

!Please note

This symbol warns against the

risk of material losses and envi-

ronmental pollution.

Note

Details identified by the word "Note" con-

tain additional information.

Target group

These instructions are exclusively

designed for qualified personnel.

■ Work on gas equipment must only be

carried out by a qualified gas fitter.

■ Work on electrical equipment must

only be carried out by a qualified elec-

trician.

■ The system must be commissioned by

the system installer or a qualified per-

son authorised by the installer.

Regulations

Observe the following when working on

this system

■ all legal instructions regarding the pre-

vention of accidents,

■ all legal instructions regarding envi-

ronmental protection,

■ the Code of Practice of relevant trade

associations,

■ all current safety regulations as

defined by DIN, EN, DVGW, TRGI,

TRF, VDE and all locally applicable

standards,

■ Gas Safety (Installation & Use) Regu-

lations

– the appropriate Building Regulation

either the Building regulations, the

Building Regulation (Scotland),

Building Regulations (Northern Ire-

land),

– the Water Fittings Regulation or

Water Bylaws in Scotland,

– the current I.E.E. Wiring Regula-

tions.

If you smell gas

Danger

Escaping gas can lead to explo-

sions which may result in serious

injury.

■ Never smoke. Prevent naked

flames and sparks. Never

switch lights or electrical appli-

ances ON or OFF.

■ Close the gas shut-off valve.

■ Open windows and doors.

■ Remove all people from the

danger zone.

■ Notify your gas or electricity

supplier from outside the build-

ing.

■ Shut off the electricity supply to

the building from a safe place

(outside the building).

Safety instructions

5724 071 GB

If you smell flue gas

Danger

Flue gas can lead to life-threat-

ening poisoning.

■ Shut down the heating system.

■ Ventilate the boiler room.

■ Close all doors leading to the

living space.

Working on the system

■ When using gas as fuel, also close the

main gas shut-off valve and safeguard

against unauthorised reopening.

■ Isolate the system from the power sup-

ply and check that it is no longer 'live',

e.g. by removing a separate fuse or by

means of a main isolator.

■ Safeguard the system against unau-

thorised reconnection.

!Please note

Electronic modules can be dam-

aged by electro-static dis-

charges.

Touch earthed objects, such as

heating or water pipes, to dis-

charge static loads.

Repair work

!Please note

Repairing components which ful-

fil a safety function can compro-

mise the safe operation of your

heating system.

Replace faulty components only

with original Viessmann spare

parts.

Ancillary components, spare and

wearing parts

!Please note

Spare and wearing parts which

have not been tested together

with the heating system can com-

promise its function. Installing

non-authorised components and

non-approved modifications/con-

version can compromise safety

and may invalidate our warranty.

For replacements, use only orig-

inal spare parts from Viessmann

or those which are approved by

Viessmann.

Safety instructions

Safety instructions (cont.)

5724 071 GB

4
Installation instructions
Installation sequence
Mounting on the wall............................................................................................ 5
Overview of electrical connections....................................................................... 6
System example 1................................................................................................ 7
System example 2................................................................................................ 12
System example 3................................................................................................ 18
System example 4................................................................................................ 24
System example 5................................................................................................ 30
System example 6................................................................................................ 36
Power supply........................................................................................................ 42
Service instructions
Function description.......................................................................................... 43
Specification
Specification......................................................................................................... 46
Connection and wiring diagram............................................................................ 47
Parts list................................................................................................................ 48
Declaration of Conformity................................................................................. 49
Keyword index.................................................................................................... 50
Index
Index
5724 071 GB

Installation sequence

Mounting on the wall

5724 071 GB

Installation

% &aVG

[{]

PWM

L?NL

sF fÖ

/ aÖ

L?N

230 V~

ASolar control module

%Cylinder temperature sensor

&Collector temperature sensor

/Temperature sensor (if installed)

aÖ Temperature sensor (if installed)

sS Transfer pump or 3-way diverter

valve

sF Solar circuit pump

fÖ Power supply

aVG KM BUS to boiler control unit

PWM Speed control, solar circuit pump

(if circulation pump with PWM

control installed)

!Please note

Electronic modules can be dam-

aged by electrostatic charges.

Before beginning work, touch

earthed objects, such as heating

or water pipes, to discharge static

loads.

Note

Apply a strain relief to all on-site cables.

Close any unnecessary knock-outs with

cable grommets (not cut open).

Installation sequence

Overview of electrical connections

5724 071 GB

DHW heating with dual mode DHW cylinder

Function description

DHW heating with solar energy

If the temperature differential between

collector temperature sensor eQ and cyl-

inder temperature sensor qQ is greater

than the start temperature differential

(coding address 00), solar circuit pump

eE is started and DHW cylinder qP is

heated.

Solar circuit pump eE stops if:

■ Actual temperature drops below stop

temperature differential (coding

address 01)

■ Maximum cylinder temperature is

exceeded (coding address 08)

■ The temperature selected at high limit

safety cut-out qW (if installed) is

reached

Additional function for DHW heating

The requirements for the additional func-

tion are achieved through circulation

pump qT.

Suppression of DHW cylinder reheat-

ing by the boiler

Reheating suppression takes place in

two stages.

Reheating of DHW cylinder qP by boiler

1 is suppressed as soon as DHW cyl-

inder qP is heated by collectors eP. For

this, the set cylinder temperature for

reheating is reduced by boiler 1. After

solar circuit pump eE has been switched

off, suppression remains active for a cer-

tain time.

In the case of uninterrupted heating by

the collectors eP (> 2 h), boiler 1 will

only reheat if the set DHW temperature

selected at boiler control unit 2 (coding

address "67") is not achieved.

A third set DHW temperature can be

specified via coding address "67" (set-

ting range 10 to 95 °C). This value must

be below the first set DHW tempera-

ture.

DHW cylinder qP will only be heated by

boiler 1 if this set value cannot be ach-

ieved by the solar thermal system.

DHW heating without solar energy

The upper section of DHW cylinder qP is

heated by boiler 1. The cylinder ther-

mostat with cylinder temperature sen-

sor qZ of boiler control unit 2 regulates

cylinder heating.

Required codes at the oil/gas boiler control unit

Boiler installation and service

instructions

Installation sequence

System example 1

5724 071 GB

Installation

Function/system components Code in solar group

Adjust Delivered con-

dition

Start temperature differential for solar circuit pump at

connection sF (delivered condition 8 K)

00:... 00:8

Stop temperature differential for solar circuit pump at

connection sF (delivered condition 4 K)

01:... 01:4

Solar circuit pump type:

■ Solar circuit pump is not speed-controlled — 02:0

■ Solar circuit pump is speed-controlled with wave

pack control

02:1 02:0

■ Solar circuit pump is speed-controlled with PWM

control

02:2 02:0

Maximum cylinder temperature (delivered condition

60 °C)

08:... 08:60

Additional DHW heating function:

■ Without additional function for DHW heating — 20:0

■ With additional function for DHW heating 20:1 20:0

Note

Coding address 00 can be set to

min. 0.5 K above coding address 01.

Coding address 01 can be set to

max. 0.5 K below coding address 00.

Installation sequence

System example 1 (cont.)

5724 071 GB

Hydraulic installation scheme

KM BUS

230 V/50 Hz

&% sSsF

ID: 4605132_1001_01

Installation sequence

System example 1 (cont.)

5724 071 GB

Installation

Equipment required

Pos. Description

1Wall mounted oil/gas boiler

with

2Boiler and heating circuit control unit

qP Dual mode DHW cylinder

qQ Cylinder temperature sensor % (solar control module)

qW High limit safety cut-out (accessory)

qE DHW circulation pump (on site)

(accessories may be required for connection)

qR Thermostatic mixing valve (accessory)

qT Circulation pump sS (transfer of heat, on site)

qZ Cylinder temperature sensor % (boiler)

eP Solar collectors

eQ Collector temperature sensor &

eW Solar-Divicon (accessory)

with

eE Solar circuit pump sF

eZ Solar control module, type SM1

eU Junction box (on site)

Installation sequence

System example 1 (cont.)

5724 071 GB

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