9
supply Water temperature Control
Using supply water sensor for limitation of supply water:
A limit sensor should be used with the WLM2 1FS & WLM2 3FS, but can be used without the weather
compensation module (WLOC-19). In this case the master will control the supply water temperature
flowing into the system via the 3 or 4 port mixing valve and actuator. The factory default setting is
45˚C, but can be changed via the master display.*
using outdoor compensation module for weather compensation
When the outdoor compensation module (WLOC) is connected to the system, the master calculates the correct supply water temperature,
taking into account the heat losses that will vary depending on the outdoor temperature, and the room temperature requirements of
the system. For example, on a day when the outdoor temperature is 12˚C, it is possible to run the heating system with a supply water
temperature of only 35˚C. this ensures economical running of the boilers, and comfortable room conditions throughout the year. The max
allowed supply water temperatur prevents excessive water temperatures if the outdoor temperature becomes extremely cold, e.g. - 30˚C.
Master with Display
type W
lM2
55ºC
Max allowed supply water temperature. (This is a safety maximum)
-3ºC
Winter
Outdoor temperature
45ºC
Winter
Design supply water temperature at outdoor temperature –3°C
Design supply water temperature if used
without
outdoor compensation module.*)
return
20ºC
summer
Outdoor temperature
25ºC
summer
Supply water temperature at outdoor temperature 25ºC
Summary of Contents for WLM2-1BA
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