Viega 1252.1 User manual

for Fonterra radiant heating and cooling, central regulation of
the supply temperature of several manifolds
Model Year built:
1252.1 from 01/2012
en_INT
Compact control station preset value
Instructions for Use

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Table of contents
1About these instructions for use 4
1.1 Target groups 4
1.2 Labelling of notes 4
1.3 About this translated version 5
2Product information 6
2.1 Intended use 6
2.1.1 Areas of use 6
2.2 Product description 6
2.2.1 Overview 6
2.2.2 Technical data 7
3Handling 8
3.1 Assembly information 8
3.1.1 Installation dimensions 8
3.1.2 Change supply and return flow section 8
3.2 Assembly 10
3.2.1 Wall mounting 10
3.3 Control 11
3.3.1 Setting the underfloor supply temperature 11
3.4 Disposal 11
Table of contents
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1 About these instructions for use
Trade mark rights exist for this document, further information can be
found at viega.com/legal .
1.1 Target groups
The information in this instruction manual is directed at the following
groups of people:
nHeating and sanitary professionals and trained personnel
nTrained electricians
nOperators
It is not permitted for individuals without the abovementioned training or
qualification to mount, install and, if required, service this product. This
restriction does not extend to possible operating instructions.
The installation of Viega products must take place in accordance with
the general rules of engineering and the Viega instructions for use.
1.2 Labelling of notes
Warning and advisory texts are set aside from the remainder of the text
and are labelled with the relevant pictographs.
DANGER!
This symbol warns against possible life-threatening injury.
WARNING!
This symbol warns against possible serious injury.
CAUTION!
This symbol warns against possible injury.
NOTICE!
This symbol warns against possible damage to property.
Notes give you additional helpful tips.
About these instructions for use
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1.3 About this translated version
This instruction for use contains important information about the choice
of product or system, assembly and commissioning as well as intended
use and, if required, maintenance measures. The information about the
products, their properties and application technology are based on the
current standards in Europe (e. g. EN) and/or in Germany
(e. g. DIN/DVGW).
Some passages in the text may refer to technical codes in Europe/
Germany. These should serve as recommendations in the absence of
corresponding national regulations. The pertinent national laws, stand-
ards, regulations and guidelines, as well as other technical guidelines,
have priority over German/European guidelines in this manual: The
information is not binding for other countries and territories and should,
as mentioned, be considered as support.
About these instructions for use
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2 Product information
2.1 Intended use
2.1.1 Areas of use
Use the compact control station in heating systems where on the one
hand their heat output takes place with a high supply temperature (e. g.
radiators, heating ventilators or similar) and on the other hand through
low-temperature heat surfaces (e. g. underfloor or wall heating).
The compact control station has a mixer valve for regulating fixed
values without auxiliary energy.
NOTICE!
This manual as well as the documents supplied about the
circulation pump and the 3-way regulating valve are part of
the product and must be observed and kept.
NOTICE!
Alterations or changes not in compliance with the intended
use are not permitted and will invalidate the warranty.
2.2 Product description
2.2.1 Overview
Fig. 1: Component overview, plan view
1 - wall bracket
2 - rear part insulating shell
3 - control station
4 - front part insulating shell
Product information
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2.2.2 Technical data
Maximum permitted operating
temperature
95 °C
Minimum permitted operating
temperature -20 °C 1)
Maximum permitted operating
pressure
1 MPa (10 bar)
Nominal heating capacity 15 kW
1) with anti-freeze added, max. 40 % per cent by volume.
With fluid temperatures below 20 °C, take potential condensation into
consideration. Furthermore, use suitable cooling media if the tempera-
ture of the media drops below the water freezing point.
Materials
Fittings Pressed brass Ms 58
Pipe runs Precision pipes
Thermal insulation shell EPP
Handles Fibre-glass reinforced, tempera-
ture-resistant plastics
O-rings EPDM elastomers
Flat seals AFM 34 or EPDM elastomers
Valve seats PTFE
Product information
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3 Handling
3.1 Assembly information
3.1.1 Installation dimensions
Fig. 2: Casing and connection dimensions
Height (with insulation) approx. 344 mm (355 mm)
Width with insulation approx. 250 mm
Axis distance approx. 125 mm
Connections G1½ x 28 1)
1) Sanpress enclosed
3.1.2 Change supply and return flow section
The compact control station factory-fitted with the supply on the right-
hand side and the return flow on the left-hand side. If it is necessary for
the installation situation, you can change the lines.
This is how you change the supply and return flow lines on the compact
control station:
Rotate the whole group by 180°.
Handling
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Remove the caps (B) as well as the connecting pipe (C).
Loosen the pump screw fitting (D) as well as the return flow ball
valve screw fitting (E).
Rotate the pump with supply ball valve and return flow ball valve by
180°.
Re-tighten screw fittings (D) and (E).
Re-mount the cap (B) as well as the connecting pipe (C).
Handling
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Open the adjustment wheel of the 3-way valve as far as it will go
anti-clockwise.
Using a screwdriver, remove the adjustment wheel gently and place
it in a new position, so that the number 6 points towards the trian-
gular marking
Set the valve to the desired position.
Check the supply temperature with a thermometer.
Change the EPP bracket of the return flow pipe from left to right.
NOTICE!
If the compact control station is rotated by 180°, you must
place the opening for the mixer (approx. 53 mm) on the left-
hand side. In addition, remove the inserted insulating shell
for the return flow pipe from the left-hand side out of the
insulating box and re-insert it on the right-hand side.
NOTICE!
In the case of the compact control station model 1252.1 our
settings are valid as opposed to the manufacturer's infor-
mation. Manufacturer's documentation should be observed
regarding maintenance and repairing faults.
3.2 Assembly
3.2.1 Wall mounting
Fig. 3: Specified spaces for wall mounting
How to mount the compact
control station to the wall:
Handling
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Use the wall bracket to perforate the pre-formed slits in the rear part
of the heat insulation from the front.
Place the wall bracket to the wall (opening pointing up) and fasten it
with dowel and screws.
Clip in the rear part of the heat insulation. Insert the hexagonal pro-
file of the ball valves in the hexagonal profile of the wall bracket.
Connect to the boiler / heating circuit.
Have an authorized technician connect the pump.
Fill the system and perform a leakage test. Ensure that all the air is
flushed out of the system.
If required, ventilate the pump separately.
Set the 3-way valve to the desired supply temperature. Use the ther-
mometer to check the supply temperature.
Pull the rear part of the heat insulation towards the station and clip
in the front part of the heat insulation.
3.3 Control
3.3.1 Setting the underfloor supply temperature
If maximum power (nominal power) is required, set the boiler supply
temperature at least 15 °C higher than the desired supply temperature
in the underfloor circuit.
The setting handwheel of the mixer valve has a scale of 1 to 6 and
allows for continuous setting of a supply temperature between 15 and
55 °C. Refer to the table below for the respective target temperature:
Scale value 123456
Target temperature in °C 15 27 32 37 48 55
The recommended setting range for underfloor heating is
level 3–6 (32–55 °C).
3.4 Disposal
Separate the product and packaging materials (e. g. paper, metal,
plastic or non-ferrous metals) and dispose of in accordance with valid
national legal requirements.
Handling
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