System Parameters Block Diagram 4 - Riello TAU Unit 50 Installation And Maintenance Manual

4.3.11

System parameters Block diagram 4

9
See section "Commissioning and maintenance" for a de-
tailed description of how the parameters work
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 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 = 11-21-22-23-24-25 - Stand alone configuration)
Par.
Description Parameter setting
No.
Progr.ble
3 = DHW pump (**)
125
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.
Progr.ble
123 2 = Water pressure switch M01
inp. 8
Progr.ble
117 3 = Heating flowmeter
inp. 2
(***) An INAIL kit is required for each thermal unit
Hardware configuration
S1 = OFF (not used)
DIPSWITCH = 10000000
Configuration of boiler parameters
Par.
No.
73
147
184
7
35
Terminals No.
135
M02 16-17-18
136
M02 9-10-11
140
M02 13-14-15
Configuration of cascade parameters
M01 9-10
Par.
No.
M01 13-14
148
152
Terminals No.
153
84
27-28
74
M01 21-22-23
107
CONFIGURATION OF CASCADED THERMAL UNITS
Description
Boiler Address
Number of Units
No. Active DHW units
CH Hysteresis
DHW mode
Mod. Pump Type
Mod. pump mode
Minimum Flow
Description
Power Mode
PwrMode2 Min Power
PwrMode2 Hysteresis
Module Rotation Interval
Emergency mode setpoint
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)