VADO VADO-PRO-100P User manual

Thermostatic mixing valve
VADO-PRO-100P
IMPORTANT
Installer: This Manual is the property of the customer
and must be retained with the product for
maintenance and operational purposes
and operational purposes.

1
INTRODUCTION
Thermostatic mixing valves (VADO-PRO-100P) are specified to meet the N．Ｈ．Ｓ
Estate Model Engineering Specifications-D08 of safety, comfort and economy as
demanded by today’s users. All products are designed, manufactured and supported
in accordance with accredited BS EN ISO 9001:2000 Quality Systems.
The following abbreviated designation codes are used throughout this booklet.
Detailed descriptions are given below:
HP High pressure
LP Low pressure
W Washer basin
VADO-PRO-100P FOR USE IN THE FOLLOWING DESIGNATIONS
CODE OPERATING PRESSURE APPLICATION
HP-W HIGH PRESSURE WASH BASIN
LP-W LOW PRESSURE WASH BASIN
DESCRIPTION
The VADO-PRO-100P is a lever operated sequential mixing valve for basins. It uses
proven thermostatic technology for temperature control. A single lever provides
sequential operation from OFF through COLD and WARM to a maximum blend
temperature preset at 41, which can be adjusted if required.
The VADO-PRO-100P is designed for single or two hole basins.
The supply connections are via flexible inlet tails and check valve assemblies that
incorporate check valves and filter.
SAFETY: WARNINGS
The VADO-PRO-100P is precision-engineered and should give continued superior
and safe performance, provided:
1. They are installed, commissioned, operated and maintained in accordance with
the recommendations given in this Manual.
2. Periodic attention is given, as necessary, to maintain the product in good
functional order.
The function of a thermostatic mixing valve is to deliver water consistently at a safe
temperature. In keeping with every other mechanism, it cannot be considered as
being functionally infallible and as such, cannot totally replace the vigilance of
BuildCert Certificate number BC1361/0514

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nursing/supervisory staff where that is necessary. Provided it is installed,
commissioned, operated and maintained within these recommendations, the risk of
faiure, if not eliminated, is reduced to minimum achievable.
SPECIFICATION
Important Points:
1. The installation, commissioning and maintenance of this product must be
carried out in accordance with instructions given in this Manual, and must
be conducted by designated, qualified and competent personnel.
2. Installation must comply with all local/National Water Supply Authority
Regulations/Bye-laws, and Building and Plumbing Regulations.
3. Our products are precision-engineered and should give continued superior
and safe performance, provided:
-they are installed, commissioned, operated and maintained in accordance
with these recommendations, and
-periodic attention is given as necessary to maintain the product in good
functional order.
4. Warning: continued use of this product in conditions outside the limits
listed in this section can severely affect the performance and reduce the
effective service life, and can present potential risk to users.
Table 1: Conditions for normal use
NOTE: Valves operating outside these conditions cannot be guaranteed by the
Scheme to operate as Type 3 valves.
Connections:
Inlet supply connections are via the 1/2”BSP internal threads in the checkvalve
assemblies, connected to the ends of flexible inlet tails. The reversible insert washers
allow for connection to either flat-faced 1/2”BSP external or 15 mm compression
unions，The hot supply connection is through the flexible inlet tail nearest the outlet
of the Thermostatic mixing valve, identified with a red mark.
Operating pressure range
High pressure
Low pressure
Maximum static pressure-bar
10
10
Flow pressure, hot and cold-bar
1 to 5
0.2 to 1
Hot supply temperature-℃
52-65
52-65
Cold supply temperature-℃
5 to 20
5 to 20

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Dimensions:

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INSTALLATION
General
Installation must be carried out in accordance with these instructions, and must
be conducted by designated, qualified and competent personnel.
1. Before commencing, ensure that the installation conditions comply with the
information given in the specification section.
2. Care must be taken during installation to prevent any risk of damage.
3. The hole in the basin must be a minimum of 29 mm up to a maximum of 40 mm
diameter, with a basin thickness of 30 mm maximum.
4. The Thermostatic mixing valve should be positioned for easy access during use
and maintenance. All routine maintenance procedures can be conducted with the
Thermostatic mixing valve body in place.
5. Conveniently situated isolating valves must be provided for maintenance.
6. Pipework dead-legs should be kept to a minimum.
7. Supply pipework layout should be arranged to minimize the effect of hydraulic
restriction or other outlet usage upon the dynamic pressures at the Thermostatic
mixing valve inlets. Recommended minimum supply line pipe diameter is 1/2”
or 15 mm.
8. Inlet threaded joint connections should be made with PTFE tape or liquid
sealant. Do no use oil-based, non-setting jointing compounds.
9. To eliminate pipe debris it is essential that supply pipes are thoroughly flushed
through before connection to the Thermostatic mixing valve.
Procedure (Refer to Figure 1)
1. Screw the fixing studs fully into the Thermostatic mixing valve body.
2. Place the ‘O’seal in the groove in the basin of the Thermostatic mixing valve
body and place the Thermostatic mixing valve into the hole in the basin.
3. Place the flexible inlet tails through the larger holes in the backplate.
4. Screw the flexible inlet tails into the Thermostatic mixing valve from under the
basin and tighten.
5. Pull the backplate over the fixing studs.
6. Made sure that the Thermostatic mixing valve is in the correct position and
screw the fixing nuts onto the fixing studs. Tighten the fixing nuts.
7. Select the correct orientation of the insert washers. This is dependant on the type
of unions used to terminate the supply pipework.
-For flat-faced unions remove the ‘O’seals and place the insert washers into the
checkvalve assemblies small end first.
-For 15 mm compression unions place the insert washers, complete with ‘O’

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seals, into the checkvalve assemblies large end first.
8. Connect the checkvalve assemblies complete with insert washers to the supply
pipework. Use a suitable 22 mm spanner/adjustable to tighten the checkvalve
assemblies.
9. Locate the fibre washers inside the nuts on the flexible inlet tails and screw the
flexible inlet tails on to the checkvalve assemblies. The flexible inlet tail nearest
the outlet of the Thermostatic mixing valve must be connected to the hot supply.
Use a suitable 24 mm spanner/adjustable to tighten the flexible inlet tails.
Restore the water supplies and check all connections are watertight. Refer to
commissioning.

6
COMMISSIONING
Commissioning must be carried out in accordance with these instructions, and
must be conducted by designated, qualified and competent personnel.
Maximum Temperature
The maximum blend temperature obtainable by the user should be limited, to
prevent accidental selection of a temperature that is too hot.
The VADO-PRO-100P is fully performance tested, and the maximum temperature is
preset to 41℃under ideal installation conditions at the factory. Site conditions and
personal preference may dictate that the maximum temperature has to be reset
following installation.
Adjust the mixed water temperature in accordance with table 2, the method of
adjustment is covered in this COMMISSIONING section.
Table 2: Mixed Water Temperature
Application
Abbreviated Designation
Mixed water temperature ℃
Washbasin
-HP-W, -LP-W,
41 max
Maximum Temperature Setting:
Make sure that an adequate supply of hot water is available at the hot inlet of the
Thermostatic mixing valve.
The minimum temperature of the hot water must be at least 10℃above the desired
blend, however during resetting this should be close to the typical storage maximum
to offset the possibility of any blend shift due to fluctuating supply temperatures.
Make sure that both inlet isolating valve are fully open.
Temperatures should always be measured using a thermometer with proven
accuracy.
1. Use the 2 mm Allen key (supplied) to loosen the grub screw in the lever.
2. Move the lever to full hot, note its position and remove the lever.
3. Let the water run until the temperature stabilizes.
4. Insert the 2 mm Allen key into the grub screw in the centre of the head
assembly.
5. Rotate the grub screw as necessary until the required maximum blend
temperature is achieved. Rotate the grub screw anticlockwise to increase the
temperature or clockwise to decrease the temperature.
6. Refit the lever in its original position. If required the lever can be fitted in any
position that allows unobstructed movement of the lever over its operating
range.
7. Move the lever to the off position.
8. Use the 2 mm Allen key to tighten the grub screw.
Commissioning Checks
(Temperatures should always be recorded using a thermometer with proven
accuracy)

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1. Check the inlet pipework temperature for correct function of checkvalves.
2. Operate the Thermostatic mixing valve and check:
-Flow rate is sufficient for purpose
-Temperature obtainable is acceptable
-All connections are watertight.
3. It is advisable to establish a performance check at this time, which should be
noted for future reference as part of a Planned Maintenance Program.
The procedure should be chosen to imitate both typical and difficult operating
conditions, such as any supply pressure fluctuations that may be likely. An ideal
method is to locate another outlet on the common cold water supply close to the
fluctuations (operating this outlet should cause a drop in supply pressure), and
note the subsequent effect on blend temperature. This should be no more than
2℃change).
Note! Causing thermal shutdown of the Thermostatic mixing valve by full closure of
the cold supply may not adequately indicate the practical capability of the
Thermostatic mixing valve, nor its service condition. Consequently this is not a
recommended performance check, and repeated such testing may ultimately affect
service life.
OPERATION
The VADO-PRO-100P has a single lever that provides sequential operation from
OFF through COLD and WARM to a preset maximum blend temperature. The
maximum temperature is preset to 41℃under ideal installation conditions at the
factory. To change this setting, refer to the information given the commissioning
section.
Principle of Operation

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IN-SERVICE TESTING
The purpose of in-service testing is to regularly monitor the thermal performance of
thermostatic mixing valve. Deterioration in performance can indicate the need for
service work to be carried out on the system.
If the authority concerned does not have a planned test and maintenance schedule
then the suggestions below should form the basis of a new system.
At intervals of 6-8 weeks and 12-15 weeks after commissioning:-
1. Check supply parameters are still within the expected values if not check system
for faults.
2. Carry out commissioning procedures using the same test equipment, if the mixed
water temperature has changed a significant amount (by more than 1K) check to
ensure in line filters are clean, that the check valves are working and all isolation
valves are fully open. If no fault can be found check and record the mixed water
temperatures and readjust mixed water temperature to the values in table 2.
Complete the commissioning procedure if the mixed water temperature exceeds
the values of the maximum recorded temperature by more than 2K the need for
service work is indicated.
Depending on the results of these two tests the following should be adopted
a) If a small change (e.g. 1K to 2K) occurs in one of these tests or there is no
significant change (e.g. 1K maximum) then the next in service test should be 24
to 28 weeks after commissioning.
b) If small changes occur in both test or a larger change occurs in one test
(exceeding 2K) then the next in service test should be carried out 18 to 21 weeks
after commissioning.
These results can then be used to set a service interval which tests have shown can
be used with no more than a small change in mixed water temperature. This method
of determining service intervals is used to take into account various in service
conditions (i.e. water condition) that the valve may experience.