System Parameters Block Diagram 3 - Riello TAU Unit 140 Installation And Maintenance Manual

4.3.8

System parameters Block diagram 3

9
See the section "Commissioning and maintenance" for a
detailed description on parameter operation
MANAGING
Functions:
− Reads system sensor (SS)
− Controls thermal unit pump (PC)
− Controls DHW pump (PB)
− Reads storage tank sensor (SB)
− Manages control of mixed zone 3 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 8 = LPG gas solenoid
125
outp. 1 valve (VLPG)
Progr.ble
187 1 = General pump (PC)
outp. 5
Progr.ble
128 16 = Zone pump (P1)
outp. 4
3 = System sensor
122 Prog Input 7 (used as cascade
188 Prog Input 9 2 = Zone sensor (S1)
(*) 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 12-13-14
M01
sensor SC)
M01 13-14
Terminals No.
M01 27-28
switch
21-22-23
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
9-10
Par.
Description
No.
148 Power Mode
152 PwrMode2 Min Power
153 PwrMode2 Hysteresis
84 Module Rotation Interval
74 Emergency mode setpoint
107
CONFIGURATION OF CASCADED THERMAL UNITS
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)