10
Temperature adjustment
Set the desired recirculation system temperature by turning the adjustment knob. The graduated
scale shows the temperatures at which the indicator can be set. A valve temperature setting at about
10°F (5°C) higher than the water temperature at the valve inlet is recommended, accounting for heat
losses along the line, to limit the head required at the recirculation pump. Be sure this is the minimum
flow rate at the mixing valves in the central heating system.
Adjustment locking
After adjusting the temperature, the setting can be locked at the desired value using the adjustment
knob. Unscrew the locking screw at the top of the adjustment knob, remove the knob and then
put it back on so that the internal groove couples with the protrusion on the knob holder nut. When
this block is used, the reference of the indication of the temperature values on the knob is lost. To
restore it, completely unscrew the lcoking screw. Reposition the knob on MAX value. Tighten the
locking screw.
