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Thermostatic
Mixing Valve
Model - TMV15-1
Instruction Manual
Version 1.0 Jan 2015
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PLEASE READ THESE INSTRUCTIONS BEFORE COMMENCING
INSTALLATION. UPON COMPLETION OF INSTALLATION
ENSURE THE INSTRUCTIONS ARE LEFT WITH THE USER/
MAINTAINER OF THE PRODUCT.
Thermostatic Mixing Valve
1. INTRODUCTION
Thank you for purchasing a Hyco Thermostatic Mixing Valve. The valve can be used
with the Hyco Speedflow or Powerflow unit or larger unvented cylinders, where
maintaining water supply at a safe and constant temperature is necessary. Tested and
approved under the TMV3 scheme the TMV15-1 is ideal for use in many applications
including schools, hospitals, public washrooms, restaurants and office and commercial
kitchens.
THE INSTALLER SHOULD ENSURE THAT THE INSTALLATION COMPLIES
WITH ALL CURRENT REGULATIONS AND LEGISLATION.
BEFORE COMMENCING INSTALLATION ENSURE THAT THE SUPPLY
CONDITIONS ARE CHECKED TO ENSURE COMPLIANCE WITH THE
PARAMETERS SHOWN IN THE TECHNICAL SPECIFICATION TABLE
(E.G. SUPPLY PRESSURE, TEMPERATURES).
ENSURE THAT THE DESIGNATION OF THE VALVE MATCHES THE
INTENDED APPLICATION.
FLUSH BOTH SUPPLY PIPES BEFORE CONNECTING THE VALVE TO
REMOVE ANY DEBRIS.
ANNUAL INSPECTION AND MAINTENANCE IS REQUIRED TO ENSURE
PROPER PERFORMANCE AND MAXIMUM LIFE. ENSURE THAT ACCESS TO
THE VALVE IS NOT OBSTRUCTED SO THAT FUTURE MAINTENANCE
CAN BE CARRIED OUT.
THE HOT AND COLD WATER SUPPLIES MUST BE CONNECTED TO THE
CORRECT CONNECTIONS ON THE VALVE AS PER THE MARKINGS
INDICATED ON THE VALVE BODY.
THE VALVE SHOULD NOT BE INSTALLED WHERE THERE IS A POSSIBILITY
OF THE VALVE BEING DEPRIVED OF WATER OR WHERE DEMAND IS
GREATER THAN ANY STORED SUPPLIES.
THE HOT SUPPLY TEMPERTAURE SHOULD BE AT LEAST 10°C ABOVE THE
VALVES SET MIXED OUTLET TEMPERATURE.
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2. APPLICATION
CODE OPERATING PRESSURE APPLICATION
HP-S High Pressure Shower Temperature 41°C
HP-W High Pressure Washbasin Temperature 41°C
HP-B High Pressure Bidet Temperature 38°C
HP-T44 High Pressure Bath Fill Temperature 44°C
HP-T46 High Pressure Bath Fill Temperature 46°C
LP-S Low Pressure Shower Temperature 41°C
LP-W Low Pressure Washbasin Temperature 41°C
LP-B Low Pressure Bidet Temperature 38°C
3. TECHNICAL SPECIFICATION / CONDITIONS FOR USE (TMV3)
Factory temperature setting 38°C
Maximun hot inlet temperature 85°C
Outlet temperature range 35°C-46°C
Inlet temperature range (Hot supply) 52°C-65°
Inlet temperature range (Cold supply) 5°C-20°C
Minimum hot to mix differential temperature 10°C
Temperature stability +/- 2°C
Maximun working pressure (Static) 10 Bar Max
D08 working pressure range Low Pressure 0.2-1 Bar
High Pressure 1-5 Bar
Max flow rate @ 1bar differential 21L/Min
THE VALVE MAY PERFORM ADEQUATELY OUTSIDE THESE CONDITIONS
BUT THE TMV3 SCHEME APPROVAL WILL NOT APPLY. IF IT IS REQUIRED
TO WORK WITH PARAMETERS OUTSIDE OF THE ABOVE, A QUALIFIED
PERSON MUST CARRY OUT THEIR OWN RISK ASSESSMENT TO ENSURE
THE VALVE IS STILL SUITABLE FOR USE.
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4. INSTALLATION
• The TMV15-1 TMV3 is designed for single outlet applications however it can
be used in multiple outlet applications providing the installation is carried out
within the recommended parameters and the flow rate requirement of the
customer is met.
• Ensure that the designation of the valve matches the intended application.
• The valve can be installed in any orientation.
• Flush both supply pipes before connecting the valve.
1. Cap
2. Locknut
3. Sticker
4. Top
1
2
3
4
5
6
7
8
9
10
11
12
14
13
15
17
16
18
20
19
5. O-ring
6. Adjusting Screw
7. O-ring
8. Piston
9. O-ring
10. Element
11. Spring
12. Body
13. Loose nut
14. Circlip
15. Check valve
16. Strainer
17. O-ring
18. Check Valve HSG
19. Olive
20. Nut
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5. COMMISSIONING & RESETTING THE TEMPERATURE
140mm
115mm
Since the installed supply conditions may differ from those used in testing and setting
the valves during final inspection and a valve may have several designations.
The mixed outlet water temperature
• Ensure that the supply pressures and temperatures are within normal
operating parameters.
• Using a small flat headed screwdriver or similar tool, gently prise off the
plastic cap.
• Using the moulded triangle shaped tool on the top of the cap, turn the valve
clockwise to decrease or anti-clockwise to increase the temperature. A digital
hand-held thermometer should be used to measure the outlet temperature
correctly.
• Once the correct outlet temperature has been achieved, the valves internal
mechanism should be exercised at least three times by alternately isolating the
hot and cold supplies. This will cause the piston to travel its full stroke and will
ensure the valve is operating correctly. If the set temperature has drifted after
this operation, then the commissioning operation should be repeated.
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Fail-safe test
Once the valve has been commissioned, a fail-safe shut off test should be performed.
• Isolate the cold supply. The flow should reduce to a trickle within a couple of
seconds depending on site conditions.
• If the temperature has not altered, repeat the test for the hot supply.
• If either fail-safe function does not operate, ensure that supply pressures and
temperatures are within the valves normal operating parameters. In addition,
check that the hot supply temperature is at least 10°C above the valves set
mixed outlet temperature i.e. hot to mix differential temperature.
6. MAINTENANCE
The TMV15-1 valve should be tested against the original performance results
approximately 3-4 months after installation.
When testing is due the following routine performance checks should be carried out:
• Measure the mixed water temperature at the outlet.
• Carry out the cold fail-safe shut off tests by isolating the cold water supply to
the thermostatic mixing valve. Wait for five seconds, if the water is still flowing
check that the temperature is below 46°C.
• If there is no significant change to the set outlet temperature (2°C or less change
from original setting) and the fail-safe shut off is functioning, then the valve is
working correctly and the next service should be scheduled for 6-7 month time.
• If there is a significant change to the set outlet temperature (>2°C), the
necessary adjustments should be made and the next service should be scheduled
for 3-4 month time.
• Future in-service tests should be carried out at intervals (at least annually) set
to those which previous tests have shown can be achieved with no significant
changes to the set outlet temperature.
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7. CLEANING THE VALVE
• Isolate the hot and cold supplies and remove the valve body from the installation
by undoing the adaptor union nuts. Make note of the orientation of the parts as
they are removed so that they can be reassembled in the correct manner.
• Remove the check valves and strainers fitted in the adaptors and check for
damage, rinse in clean potable water.
• To clean the internals of the main valve body, first remove the cap and then
carefully remove the valve headwork by unscrewing the large hex nut
(22mm spanner required).
• Slide the piston and thermostat assembly out of the valve body and clean all
internal surfaces such as O-rings with a weak solution of scale remover,
approved for use with potable water.
• After cleaning, reassemble the valve. Exercise, reset and test the valve as per
the Commissioning and Maintenance sections.
INSTALLATION OF WATER TEMPERATURE CONTROL PRODUCTS MUST
BE PERFORMED BY QUALIFIED PERSONNEL. THE QUALIFIED INSTALLER
SHOULD BE SURE THAT THE PROPER DEVICE HAS BEEN SELECTED FOR
THE INSTALLTION.
A FAULTY INSTALLATION CAN CAUSE SCALDING, SEVERE INJURY OR
DEATH.
ANNUAL INSPECTION AND MAINTENANCE IS REQUIRED TO ENSURE
PROPER PERFORMANCE AND MAXIMUM LIFE. ENSURE THAT ACCESS TO
THE VALVE IS NOT OBSTRUCTED SO THAT FUTURE MAINTENANCE
CAN BE CARRIED OUT
8. GUARANTEE AND SERVICE POLICY
This product is guaranteed against faulty materials and manufacture for a period of
one year from the date of purchase. Hyco will in its sole discretion replace, repair
or refund any faulty unit. Incorrect installation, frost damage, and the consequences
of limescale deposits are excluded. Consequential costs such as labour charges or
damage to fittings and surroundings are expressly excluded.
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INFORMATION FOR CORRECT DISPOSAL OF THE PRODUCT IN
ACCORDANCE WITH THE EUROPEAN DIRECTIVE 2002/96/E.
At the end of its working life this equipment must not be disposed of as household
w
aste. It mus t be t aken to a local authority waste collection centre or to a dealer
providing this s ervice. Dispo sing of electrical and elect ronic equi pment sep arately
enables its components to be recovered and recycled to obtain significant savings
in energy and resources. In order to underline the duty to dispose of this equipment
separately, the product is marked with a crossed out dustbin.
Hyco Manufacturing Ltd
Normandy Court, Express Way
Castleford, WF10 5NR
Sales: 01924 225 200
Fax: 01924 225 210
Switchboard: 01924 225 215
Email: sales@hyco.co.uk
www.hyco.co.uk
WATER HE ATIN G SPACE H EATI NG HA ND DRYE RS
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