Boiler control (hot water storage boiler)
MMV-C (MMV - Compact)
APPLICATION
Compact thermostatic mixing valve designed to supply general purpose applications with tempered water not exceeding a set temperature.
Ideal for multi-facility applications :
Domestic homes, schools, restaurants, laboratories, motorway services, commercial buildings…
anywhere needing a supply of water at a temperature pre-set on site.
SCALD PROTECTION
Rapid fail safe on either hot or cold water supply failure comply with EN1111 and EN1287.
FEATURES
• Easily installed thermostatic mixing valve.
• Handwheel with set positions (graduated scale Min to Max - 5 setting positions) or click cover cap.
• Locking cap preventing the end user from adjusting the temperature.
• WRAS approved.
• Outstanding reliability.
• DZR Brass body.
• Compliance with standard EN1111 and EN1287
• Compression fitting 22 mm and 15 mm - TMV2 approved certificate N°BC 175/0206
(art. number 97126, 97127, 97129, 97130), N°BC 208/0706 (art. number 97140, 97142, 97143, 97144).
• Fitted with 2 check valves.
• Can be installed in any position.
• Nickel plated finish or self colour brass.
SPECIFICATIONS
• 1/2” or 3/4” Male/Male union threaded on inlets and outlets, compression fitting 15 or 22 mm, and male threaded 3/4”
or male threaded 1”.
• Pressure at the valve inlets must be within the 5:1 ratio under flow conditions.
The size and layout of pipework and in-line fittings must take this into consideration.
Optimum performance achieved with equal pressure.
• Temperature : accurate to within 1,5°C of chosen temperature (with balanced dynamic pressure).
• Head loss under dynamic pressure at the mixer inlets is shown by the curve.
• Maximum static pressure : 10 bar.
• Operating pressure : 0,2 to 5 bar.
• Hot temperature supply : 52* - 85°C, *differential minimum hot/mix temperature must be 10°C.
• Cold temperature supply : 5 - 20°C.
• Temperature setting range : 30 to 65°C.
• Factory temperature setting 38°C.
• Flow rate at 3 bar : 57 l/min.
• Flow mini : 5 l/min.
• Body strength : 25 bar.
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MMV-S (for solar systems)
APPLICATION
Thermostatic mixing valve are used in solar systems for the production of domestic hot water.
In these systems the temperature of the water in the storage tank can vary considerably depending on the season and the degree of solar radiation, and can reach very high temperatures over long periods.
Especially in summer, and if there is little water usage, the hot water at the storage tank outlet can reach temperatures around 95°C before the safety valve or the pressure and temperature safety valve are actuated.
At these temperatures, the hot water cannot be used directly, because of the scalding risk.
FEATURES AND BENEFITS
MMV-S has been designed specifically for systems requiring high flow rates and can function continuously at the high temperatures of the incoming hot water from solar storage tank.
• Wax thermostat technology for high temperature up to 110°C.
• Excellent temperature stability.
• Rapid shut-off of mixed water supply if either the hot or cold supply fails (complies with EN1111 and EN1287).
• Internal coating to prevent scale deposit.
• Locking cap preventing the end user from adjusting the temperature.
• Handwheel with set position (graduated scale Min to Max - 5 setting positions).
• Robust and low complexity construction providing superior reliability, longevity and safety..
SPECIFICATIONS
• Temperature : accurate to within +/-2°C of chosen temperature (with balanced dynamic pressure).
• Head loss under dynamic pressure at the mixer inlets is shown by the curve.
• Maximum static pressure : 10 bar.
• Operating pressure : 0,2 to 5 bar.
• Hot temperature supply : 52* - 110°C, *differential minimum hot/mix temperature must be 10°C.
• Cold temperature supply : 5 - 25°C.
• Temperature setting range : 30 to 65°C.
• Factory temperature setting 50°C.
• Flow rate at 3 bar : 63 l/min.
• Flow mini : 5 l/min.
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