Sanitary Hot Water Mode (D.h.w.) Set Up - Sime RVA 47.320 Manual Del Usuario

To determine the switching, the Summer/Winter switching tempe-
rature setup (which is indicated with SuWi in the following diagram),
± a fixed switching differential value, is compared to the attenuated
external temperature.
Switching between the summer and winter operation
TAged = Attenuated external temperature
SuWi = Summer/Winter switching temperature
NOTE:
In Fall, it might prove useful to raise the Summer/Winter switching
temperature to 20°C, so that the heating can turn on earlier.
Heating curve slope (S)
17
The regulator generates the delivery temperature setpoint accor-
ding to the selected heating curve.
a) Push the line selection button to select line 17.
b) Push the + / - buttons to select the curve slope.
Setup range
-:— / 2.5...40
When the curve is quiescent (setting is —.-), the regulator needs an
external heat requirement. This requirement must be transferred to
the regulator via LPB or via the H1 input. If there are various diffe-
rent signals, the regulator will use the highest requirement.
The regulator generates the delivery temperature setpoint using the
heating curve, thus allowing the system to maintain a constant room
temperature even without utilizing a room unit. The more accentua-
TV = Delivery temperature
TA = Composite external temperature
50
T = Temperature
t = Time
H = Heating
U/M Default value
increment 15.0
ted the heating curve slope, the higher the prescribed value for the
delivery temperature when the external temperature is low.
Using a room unit, the comfort will increase considerably.
Selected type of construction
Heavy (Setting 105 = 0)
Light (Setting 105 = 1)
The composite external temperature is a mixture of the actual exter-
nal temperature and the attenuated external temperature as calcu-
lated by the regulator. The mixture of actual and attenuated external
temperature depends upon the building's type of construction (set-
ting # 105) and is generated as follows:
The composite external temperature acts as a compensating varia-
ble on the delivery temperature control, which is thus paired to the
prevalent weather conditions.
TAakt = actual external temperature
TAged = attenuated external temperature
TAgem1 = Composite external temperature for light-structure buildings
TAgem0 = Composite external temperature for heavy-structure buildings
6

SANITARY HOT WATER MODE (D.H.W.) SET UP

13
D.H.W. Temperature setpoint (RVA 47.320)
This parameter defines the maintenance value of the temperature in
the boiler during the prescribed periods of time.
The D.H.W. is prepared only when it is needed and controlled throu-
gh the boiler feeler.
a) Push the line selection button to select line 13.
b) Push the + /– buttons to adjust the D.H.W. temperature setpoint
value.
Setup range U/M
TBWR ... TBWmax
TBWR = Reduced setpoint value of D.H.W. temperature (line 120)
TBWmax = Maximum setpoint value of D.H.W. temperature.
Reduced setpoint value of D.H.W. temperature (RVA 47.320)
120
The "Reduced setpoint value of D.H.W. temperature" guarantees a
minimum D.H.W. temperature outside the preparation time periods
(the parameter is of the INSTALLER type). The D.H.W. timer switches
automatically from the "comfort" time period to the "reduced".
Enter the INSTALLER mode and:
a) Push the line selection button to select line 120.
b) Push the + / - buttons to adjust the reduced setpoint value of the
D.H.W. temperature.
Composite external temperature
Tagem 1/2 TAakt + 1/2 TAged
Tagem = 3/4TAakt + 1/4 TAged
Default value
°C 55