Minimum - Riello TAU Unit 50 Installation And Maintenance Manual

INSTALLATION
Nr. dis-
Par.
Menu played
No.
Display
Sets the value of the temperature difference (Delta
T) between the module's delivery and return tem-
perature. For a Delta T value ranging between Par.
12 and (Par. 12) +8°C, the module reduces its power
Hx diff. in a linear fashion until it reaches the minimum
M1 12

Minimum

power. The minimum power is maintained until
reaching (Par. 12) +8°C+5°C, after which the module
switches off for a period of time equal to the value
attributed to Par. 13; at the end of this time interval,
the module switches on again.
Hx Diff.
Defines the restart time after reaching the Delta T
M1 13 Max. Wait
limit between delivery and return.
Time
Max. Power
M1 14 Sets the heating's % max. power.
CH
Min. Power
M1 15 Sets the heating's % min. power.
CH/DHW
Defines the proportional parameter for modulation
M1 16 CH PID P
during heating operation.
Defines the modulation integral term during heat-
M1 17 CH PID I
ing operation.
Defines the modulation derivative term during
M1 18 CH PID D
heating operation.
Design Sup- Defines the max. set-point at the minimum out-
M1 19
ply Temp. door temperature for climatic regulation.
Defines the minimum outdoor temperature to
Design Out-
M1 20 which the maximum set-point can be associated
door Temp.
for climatic regulation.
Baseline
Defines the minimum set-point at the maximum
M1 21 Supply
outdoor temperature for climatic regulation.
Temp.
Baseline Defines the maximum minimum outdoor tem-
M1 22 Outdoor perature to which the minimum set-point can be
Temp. associated for climatic regulation.
Design Limits the minimum value that can be assigned to
M1 23 Supply Min. the set-point in heating mode (does not apply to
Limit heating mode 4).
Design Limits the maximum value that can be assigned to
M1 24 Supply Max. the set-point in heating mode (does not apply to
Limit heating mode 4).
Warm
Defines the temperature at which climatic regula-
M1 25 Weather
tion is switched off.
Shutdn
Establishes the set-point temperature increase
Boost Temp delta T, if the heat demand in heating mode is not
M1 26
Increment satisfied after the time interval specified in Par. 27
(applies only to stand-alone mode).
Defines the time interval after which the set-point
Boost Time
M1 27 is increased as defined in Par. 26 (applies only to
Delay
stand-alone mode).
Used in heating mode Par. 1= 2 or 3. Establishes
Night Set- by how many degrees the delivery set-point is
M1 28
back Temp. reduced when the RT (room thermostat/heat de-
mand) contact is closed.
Establishes the domestic hot water circuit's opera-
tion mode.
M1 35 DHW mode 0 = Disabled
1 = Water heater with probe
2 = Water heater with thermostat
Max. Power Defines the domestic hot water circuit's % max.
M1 113
DHW power.
Min. Power Defines the domestic hot water circuit's % mini-
M1 114
DHW mum power.
DHW Tank Defines the hysteresis to initiate the domestic hot
M1 36
Hyst. Down water demand.
Description
34
Default set-
Range
ting
10...60 40
10...250 30 Sec.
50...100 100
1...30 1
0...1275 100
0...1275 250
0...1275 0
30...90 80
-25...25 0
30...90 40
0...30 20
4...82 30
27...90 80
0...35 22
0...30 0
1...120 20 Min.
0...30 10
0...2 0
50...100 100
1...30 1
0...20 5
Access
UM Category
type
°C O General
O General
% I Heating
% I Heating
O Heating
O Heating
O Heating
°C U Heating
°C U Heating
°C I Heating
°C I Heating
°C I Heating
°C I Heating
°C I Heating
°C I Heating
I Heating
°C I Heating
I DHW
% I DHW
% I DHW
°C I DHW