5
2
5
3
1
4
Function A - Temperature control
At the set temperature, the valve plug (1), controlled by the thermostatic balancing cartridge
(2), gradually closes the outlet (3) to the minimum. The outlet never fully closes to always allow
a minimum flow for temperature sensing and to prevent recirculation pump dead-heading.
If the temperature decreases, the outlet increases, causing flow and thus temperature to
increase back to the set temperature as shown in curve 1. If temperature exceeds the set-
point, the plug stays in the minimum closed position as shown in curve 2. The balancing
cartridge has a throttling range of 60°F, from full open to minimum position.
Cv
max
T (°F)
G (gpm)
Cv
dis
Cv
min
Automatic disinfection
C
Thermal disinfection
Temperature control
100
140
150
160
190
170
180
185
T
set
(2.1)
(1.2)
(0.23)
Cv
design
(0.52)
11
Thermostatic control
Minimum flow rate
For 1162xx series with 160°F by-pass temperature
and 170°F closing temperature.
