System Parameters Block Diagram 2 - Riello TAU Unit 140 Installation And Maintenance Manual

4.3.6

System parameters Block diagram 2

9
See the section "Commissioning and maintenance" for a
detailed description on parameter operation
MANAGING
Functions:
− Reads system sensor (SS)
− Controls thermal unit two-way valve (V1)
− Controls system pump (PS)
− Controls DHW pump (PB) instead of the LPG gas solenoid
valve (VLPG)
− Reads storage tank sensor (SB)
− Manages control of mixed zone 2 zone management (ZM)
device via bus. Up to a maximum of 16 devices can be
managed.
Programmable outputs and inputs parameter configuration (*)
(If Par. 97 = 21-22-23-24-25 - Stand alone configuration)
Par.
Description Parameter setting
No.
Progr.ble
125 3 = DHW pump (**)
outp. 1
Progr.ble
187 4 = System pump (PS)
outp. 5
Progr.ble
128 1 = General pump (V1)
outp. 4
122 Prog Input 7 3 = System sensor (SS)
188 Prog Input 9 1 = DHW sensor (SB)
(*) Do NOT change the factory setting of parameter 97
(**) In place of the fuel shut-off valve VPLG
Configuration of parameters for INAIL kit (***)
Par.
Description Parameter setting
No.
2 = Water pressure
123 Prog Input 8
117 Prog Input 2 3 = Heating flowmeter M01
(***) An INAIL kit is required for each thermal unit
Terminals No.
M02 16-17-18
M02 9-10-11
M02 13-14-15
M01 9-10
M01 13-14
Terminals No.
M01 27-28
switch
21-22-23
CONFIGURATION OF CASCADED THERMAL UNITS
Configuration
S1 = OFF (not used)
(189) Burner Address = Managing
Configuration of boiler parameters
Par.
Description
No.
73 Boiler Address
147 Number of Units
184 N. active burner in DHW
7 CH Hysteresis
35 DHW mode
135 Mod. Pump Type
136 Mod. pump mode
140 Minimum Flow
Configuration of cascade parameters
Par.
Description
No.
148 Power Mode
152 PwrMode2 Min Power
153 PwrMode2 Hysteresis
84 Module Rotation Interval
74 Emergency mode setpoint
97
Parameter setting
- "Managing" (if the
cascade sensor is used SC)
- "Stand-Alone" (if the
cascade sensor is not used
SC)
Set the total number of
cascaded units (from 2 to
8)
0 to 8 (Number of active
units for DHW production)
7°C
Choose from:
1 = Water heater with probe
2 = Water heater with
thermostat
2 = Grundfos (choose
according to need)
Fixed 90% (according to
need)
5 l/min
Parameter setting
Choose from:
2 = Maximum number of
burners
3 = Minimum number of
burners
4%
40%
5 days
50 (according to need)