10
Max supply temperature
The max allowed supply water temperature is set according to the design requirements of the
installation (line A on the curve). This is the safely maximum.
Weather compensation
Winter
A design outdoor temperature and the corresponding design supply
water temperature are set (point B). To increase the heat output, adjust
the supply water temperature higher, until you feel comfortable (we
recommend only a 2 degree adjustment of this temperature at a time, and
time allowed for the system to respond).
Summer
An outdoor temperature and the corresponding supply water temperature
are set (point C). Set the outdoor temperature at the level where heating will no longer be
required (this is known as the summer shut down temperature) Default setting is 20˚C.
Then set the supply water temperature that you require when the outside temperature is at
20˚C. The default is 25˚C.
To start the summer shut down at a lower temperature level, reduce the outdoor
temperature setting, and/or reduce the supply water temperature at this setting.
The master calculates the supply water temperature on the line C to 1 if an outdoor design
temperature of -3˚C is selected, or on the line C to 2 if the outdoor is selected at -10˚C. The
intersection point on the line of the actual outdoor temperature indicates the calculated
supply water temperature.
Compensation for outdoor temperature can only be done if an outdoor compensation
module (WLOC) is installed. Without outdoor compensation module the Master will adjust
the supply temperature after the design supply water temperature winter setpoint (default
45°C).
Line 1: Factory settings
Line 2: Example on modifi ed settings
Master with Display T
ype WLM2
