11
Technical data
Dimensions and weights
◗
CW 44, CW 44k
Weights
Nominal size
G 3/8
G 1/2
G 3/4
G 1
Weight [kg]
3.2
3.1
3.1
3.0
Temperature & pressure ratings
Pressure
p [barg]
25
Temperature
T [°C]
120 (CW 44)
85 (CW 44k)
Maximum differential pressure
∆PMX [bar]
16
Adjustable outlet temperature
[°C]
n-thermostat: -2/106 (CW 44)
k-thermostat: -37/71 (CW 44k)
Troubleshooting
Problem
Cause
Action
The flow rate is too low.
The planned return temperature is
not reached.
The size and design of the
equipment differ from the
system data.
Change the equipment settings.
Check the size.
Use equipment of a size that conforms
to the system data.
Fluid is escaping (leakage).
The equipment or body is
damaged.
Replace the equipment.
Fluid is escaping (leakage).
A gasket is damaged.
Replace the damaged gasket.
Clean the sealing surfaces.
The equipment does not regulate
the flow perfectly.
The control unit is damaged
or worn.
Replace the equipment.
The equipment is working irreg-
ularly. Inner parts open and close
at intervals.
The pipe between the heat
exchanger and the equipment
is too long.
Increase the bleed flow.
Install the equipment immediately
downstream of the heat exchanger.
The flow rate is too high. The
planned return temperature is
not reached.
The equipment is incorrectly
set.
Check the equipment settings.
Reduce the bleed flow.
The movement of inner parts
is obstructed by deposits.
Check the equipment settings.
Reduce the bleed flow.
Clean the equipment.
Make sure that the movement of inner
parts is not obstructed.
95 mm
~190 mm
