Vira ViraVent SV-F Series User manual

USER MANUAL
ENGLISH LANGUAGE

2 English User Manuel - 1.0
TABLE OF CONTENTS
1. Preface 2
2. Introduction 3
3. Technical Specifications 5
4. Safety 6
5. Installation And Commissioning 6
6. Preventive Maintenance 8
7. Installations 9
8. Product Dimensions 11
9. Hydraulic Balance Tank 14
10. Pressure Drop 15
1. PREFACE
1.1. About The Device
This Viratech product improves the quality of
your complete installation.
• For an overview of the product, refer to
section 2.1.
• For the intended use, refer to section 2.3.
is Vira product is designed and manufactured
according to the Sound Engineering Practice
as stated in the Pressure Equipment Directive
(2014/68/EU).
is manual applies to product types starting
with the codes shown below:
SV
Code pt
SB ViraBalance
... Co
F
K
V
Wn
M
V
F langed
Magnet
Co e
HH�gh-Flow
TDemountable
• 0
•5
•0
•0
•5
•0
•0
•0
•0
1.2. Symbols
Throughout the instructions the following symbols
are used:
Note
Warn�ng (r�sk of �njury) or caut�on (r�sk of
damage)
R�sk of burns

3EnglishUser Manuel - 1.0
1
2
3
4
*
*
*
5
a
h
gi
e
bcd
f
1. Automatic air vent / manual air vent
2. Lifting lugs
3. Scum valve
a. Flange
b. Welded ends
c. Victaulic connection
d. Fixed bottom
e. Demountable bottom
2.2. Overview Of The Product Variations
4. Main body
5. Safety plug
* Product variation. Refer to section 2.2.
f. Drain valve
g. Rotatable dry pocket (with magnet and drain valve)
h. Separated vertical connection
i. Unified vertical connection
2. INTRODUCTION
2.1. Overview Of The Unit

4 English User Manuel - 1.0
2.3. Intended Use
• ViraVent: the unit (fully) automatically
removes all available bubbles and microbubbles
from the water and water/glycol mixtures.
• ViraClean: the unit (fully) automatically
removes (magnetic) dirt that has a higher
specific weight than the system uid from the
water and water/glycol mixtures.
• ViraPlus: the unit (fully) automatically
removes air, gasses, and (magnetic) dirt from
water and water/glycol mixtures.
• ViraFix: the unit hydraulically balances
and separates the primary and secondary ow in
the installation, in combination with the (fully)
automatic removal of air, gasses, and (magnetic)
dirt from water and water/glycol mixtures.
• ViraBalance : the unit hydraulically
balance the primary and secondary ow in the
installation.
2.4. Operating Conditions
The unit is suitable for use in systems filled
with water or mixtures of water and glycol up to
40%. The unit can be used in combination with
chemicals / inhibitors approved according to
local directives. Please check that the materials
in the unit are compatible with the materials and
uid used in your system. For more information
contact your supplier. Operation in combination
with other uids may result in irreparable
damage.
2.5. Scope Of Delivery
• 1x Unit
• 1x Quick reference guide*
• 1x Drain valve for the dry pocket
* Each Quick reference guide has a QR-scan code
with a direct link to this user manual.
2.6. Identification Sticker
Example:
Example:
A. Company Logo
B. Article Number
C. Fluid
D. Working Temperature
E. Working Pressure
F. Connection
G. Serial Number
H. Design & Manufacturing
I. Barcode Number
J. Purjor Angle
K. International Standard
L. Square Code
M. Website
A
B
J
K
L
M
C
D
E
F
G
H
I
WARNING
The unit is not suitable for demineralised water,
and cannot be used for drinking water, and
dangerous or ammable substances.
The unit should be used within the limits of the
technical specifications as given in chapter 3. In
case of doubt, always contact the supplier.
The unit is not suited for outdoor use.

5EnglishUser Manuel - 1.0
3. TECHNICAL SPECIFICATIONS
3.1. Operating Characteristics
3.2. Quality Control Specifications
NOTE
These are the specifications of the quality control at Vira.
3.2.1. Leak Test Specifications
3.2.2. Functional Test Of The Automatic Air Vent
3.2.3. Standards
Item All types
Work�ng pressure [bar-g] 0 - 10
Work�ng temperature [°C] 0 - 110
Nom�nal flow veloc�ty [m/s] 1.5
Max�mum flow veloc�ty of h�gh-
flow speed un�ts [m/s]
3.0
Flange type of flanged un�ts PN16 (DIN2633) (EN1092)
Item All types
Test pressure [bar-g] >15
Water & A�r
Test med�um
240Test t�me [sec.]
Approval criterion No leakage
Item
Valve opening test Full bore venting
All types (except for SD - SB ...)
Valve closing test Pos�t�ve valve closure
Item All types
ev�tcer�Dtnemp�uqEerusserPno�tcurtsnoC 2014/68/EU - Sound Eng�neer�ng Pract�ce
Qual�ty, safety and env�ronmental
aspects
NEN-EN-ISO 9001
NEN-EN-ISO 14001
NEN-EN-ISO 45001
4. SAFETY
4.1. Safety Instructions
WARNING
• Installation and maintenance may only be carried out by a qualified installer.
• When working on the unit, always ensure there is no pressure in the unit, let it cool down and remove
the water from the unit. This is not applicable when draining dirt from the unit.

6 English User Manuel - 1.0
5.2. Install the unit
5.2.1. Mount The Unit
Example:
• The scum valve and the manual air valve are
designed to blow o and let in large quantities of air
during the filling and emptying of the installation and
to remove oating dirt.
5. INSTALLATION AND COMMISSIONING
5.1. Installation Conditions
• Install the unit in a frost-free, well-ventilated
place.
• Install the unit in accordance with the local
guidelines and rules.
• Install the unit stress free and with the body in
vertical position.
• Do not use the unit as a support for pipework.
• It is not allowed to weld the unit to the pipework
or other external items unless the unit is specifically
designed to be welded into the pipework.
• It is not allowed to modify the unit.
• Apply the separately supplied product labels if
the labels on the product are not visible; for instance
after the unit has been insulated.
• The lifting lugs may only be used during the
installation.
• The unit operates independent of the ow
direction.
• Do not obstruct the automatic air vent (if
available) and make sure that the automatic air vent is
always easily accessible.
• A tube can be fitted to the air vent (1/2” female
thread on the outlet) to lead away the released
(smelly) air. Excessive dirt particles or foam forming
might cause a temporary leakage of
the automatic air vent.
• If a drain pipe is fitted, make sure that this pipe
is fitted stress and vibration free to the drain valve.
Preferably, a exible pipe or pipe parts should be
used (e.g. a hose).
• Do not obstruct the vent valve and keep all valves
accessible.
5.3. Commissioning
CAUTION
If a cap R½ was installed on the automatic air
vent for the system test, make sure that cap
R½ is removed before the commissioning of
the system.
WARNING
Do not touch the unit or the pipework when the
system is in operation. The surfaces may be hot
and touching them may cause burns.
CAUTION
• Do not use the scum valve or drain valve for
(re)filling.
• Always install the unit body vertically, with
the automatic air vent (if available) on top and
the dry pocket or drain valve (if available) at the
bottom.
5.2.2. Install The Drain Valve (Not For SV / SVH
Units)
NOTE
For units with a drain valve and / or magnetic dirt
separator: Make sure that there is enough space to
operate the valve. In case there is not enough space
and the unit has a rotatable dirt separator, rotate the
dry pocket.
• Attach the pipework to the to the unit. Make
sure that the unit is installed stress free.
NOTE
For ViraFix and ViraBalance (SCX and SB) : Make
sure that the warmest water enters the unit at the
top anges. The coldest water should enter the unit
at the lower anges. This is necessary to prevent
unwanted mixing of warm and cold water.
• Tighten the fasteners to the correct torque value
of the pipework.

7EnglishUser Manuel - 1.0
The system must be commissioned and running to
verify if the unit works properly.
At the first use, the automatic air vent (if
applicable) might temporarily drip a bit of moist,
but that is not a problem.
When the system is running, do the checks as
follows:
• Leak check
6. PREVENTIVE MAINTENANCE
6.1. Maintenance Schedule For
SXC..M/SD..M/SC..M.
TaskInterval Sect�on
Dra�n the d�rt
from the un�t
The f�rst month after
�nstallat�on and after
that on a regular bas�s,
dependent on the
amount of d�rt �n the
system:
•Normal amount of
d�rt: every 6
months
•Heavy amount of
d�rt: every 1 or 2
months
6.2
6.2. Drain The Dirt From The Unit
6.2.1. Drain The Dirt From The Unit
(For Units With A Standard Drain Valve)
WARNING
• The main body and the piping may be hot.
• Hot water or steam may escape during the
procedure.
1. Remove the safety plug.
2. Connect a hose to the drain valve. Make
sure that the hose is connected to a drain or leads
to a suitable place to collect the drained dirt.
NOTE
For the screw thread size, refer to section 3.4.
3. Gradually open the drain valve fully until
the dirt is drained out. An indication is when
clear water comes out of the unit.
NOTE
Restrict the amount of water that gets drained o.
4. Close the drain valve.
5. Disconnect the hose from the drain valve.
6. Install the safety plug.
7. Check the system pressure. If it is necessary,
refill the system.
WARNING
• The main body and the piping may be hot.
• Hot water or steam may escape during the
procedure.
6.2.2. Drain The Dirt From The Unit
(For Units Magnetic Dirt Separator)
1. Remove the safety plug.
2. Pull down the magnet’s rope
3. Connect a hose to the drain valve. Make sure
that the hose is connected to a drain.
4. Move the magnet through the unit.
• Gradually pull down the magnet in the dry
pocket.

8 English User Manuel - 1.0
6.3.3. Remove The Demountable Bottom /
Demountable Top
6.3.2. Remove The Drain Valve
6.3.1. Prepare The Unit For Cleaning Or
Replacement
1. Remove the pressure from the unit.
2. Let the unit cool down.
3. Support the bottom and ViraTube bundle with
appropiate supports, hoisting or lifting devices.
1. Drain the unit.
2. Remove the drain valve.
1. Remove the fasteners.
2. Remove the demountable bottom /
demountable top.
3. Make sure that the bottom is supported and
cannot fall.
CAUTION
Do not use force.
CAUTION
• Make sure that there is no pressure in the unit.
• Make sure that the unit is cooled down.
• Make sure that the unit is drained prior to
opening the unit.
• Do not use corrosive chemicals.
• Make sure that the unit is correctly supported.
- The ViraTube is supported by the
bottom of the separator.
- The ViraTube bundle may tumble over.
- In some cases the ViraTube bundle may
be aected by corrosion or fouling, which
may reduce the mechanical strength.
- ViraTube bundles and bottoms of the
separator may be considerably heavier due
to clogging dirt.
• Gradually let the handle return to the original
position.
• Repeat the steps one or two times for the best
result.
5. Gradually open the drain valve for a short period.
NOTE
Restrict the amount of water that gets drained o.
6. Close the drain valve.
7. Disconnect the hose from the drain valve.
8. Install the safety plug.
9. Check the system pressure. If it is necessary,
refill the system.
6.3. Clean Or Replace The ViraTube
Bundle (Only For SC/SCH And SD/SDH)

9EnglishUser Manuel - 1.0
7. INSTALLATIONS
7.1. Viraclean
Dirt Separator should always be installed before equipment (ie. boilers, ehillers, eontroll valves, pumps,
ete.) That needs proteetion from dirt, sludge, ete. In heating systems this should be in the return. In
ehilled water systems the unit must be loeated in the return elose to the ehiller.
7.2. Viravent
Viravent unit must be installed at the hottest part of the system far optimum performance. The static head
must not exceed 15m far heating system and 5m far cooling system.
The eiciency of the unit will be reduced if;
• The static head is exceeded.
• The maximum ow velocity of 3m/s is exceeded.
In heating systems the deaerator should be in the ow, preferably at the highest temperature (next to the
heat source) and low pressure if possible. Viravent, Deaerator should be installed after the boiler and on
the pump suction side, as these are the points where the formation of micro bubbles is greatest. in chilled
water systems the unit must be located in the return close to the ehiller.

10 English User Manuel - 1.0
7.3. Viraplus
Viraplus is a combination of deaerator and dirt separator which removes circulating air and micro
bubbles also dirt eectively. in heating systems the Viraplus should be in the ow and installed after the
boiler. In chilled water systems the unit must be located in the return close to the ehiller.
7.4. Virafix
lnstallation of a hydrualic separator in a heating system provides proper mixing, when ow in the boiler
circuit is dierent from ow in the distribution circuit. Also Virafix is a combination of deaerator, dirt
separator and hydrualic separator which removes circulating air and micro bubles also dirt eectively.
7.5. Virabalance
lnstallation of a hydrualic balance tank in a heating system provides proper mixing, when ow in the
boilercircuit from ow in the distribution circuit.