In case of instantaneous heaters, hot water flow has to at least meet flow required by
heater and maintain burning. (Specified by heater manufacturer)
Hot water supply temperature:
Maximum: 185°F (85°C).
Note 1 :Maximum temperature through this valve is limited by that of the hot water
supply (up to a maximum of 120°F when accurately calibrated).
Note 2: Minimum difference between hot and mixed temperature is 18°F (10°C).
Cold water supply temperature:
Minimum: 41°F (5°C)
Maximum: 80 PSI
Minimum: 20 PSI
Operating pressure (on hot and cold line) should be kept as balanced as possible in order
to assure maximum efficiency.
When the pressure is greater than 80 PSI, a pressure reducer is required. To be fitted
The temperature control knob is graduated from 75°F to 120°F with auto stop at 100° to
Temperature limit setting of less than 120°F
Fit a stop valve/volume control between thermo valve outlet and end devise(s).
• An independent water supply for both hot and cold is required. Do not pipe off ring main.
• Large runs of pipe work will cause frictional loss of pressure.
• The recommended main water supply piping to valve shall be 3/4” minimum
• If more than one valve is installed, the recommended main water supply piping to valve
shall be 1” minimum, reducing to 3/4” within 24” of each valve.
(Ensure adequate supply from both hot and cold water can be maintained.)
The mixing valve should be installed in compliance with the water by-laws. For further
details refer to the latest copy of by-laws guide or your local water authority.