Riello Array AR 3000 User Manual

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COMMISSIONING
5.6 Multiple Boiler Cascade Installation and Start-Up
Appendix L shows an example of Array boilers installed in a cascade of three units. The built-in control system is capable of managing
up to 8 boilers as a single, coordinated heating system. The logical schematic is:
Demand: 0-10V / OpenTherm / On-Off
T outside
System sensor D2 is
Cascade system sensor
Boiler sensor
J6 J8 Iso + Power
S1 = on
J8
S1 = off MANAGING
BOILER
J8
S1 = off
Boiler sensor
J6 J8 Iso
S1 = off
J8 DEPENDENT
BMS
Modbus
RS485
S1 = off BOILER
J8
S1 = off
Max. 8 boilers
90xMN - D1
Boiler manager &
Cascade manager
90xMN - D2
90xMN - D3
900PBTouch Screen
Power Supply
Max. 8 burners or units
900PB
Max. 8 burners or units
Power Supply
Touch Screen
90xMN - D1
Boiler manager &
Cascade manager
90xMN - D2
90xMN - D3
Fig. 44 Cascade installation scheme
After the electrical wiring of the Managing controllers of each boiler of the cascade (through the “Cascade link” connections on the Low
voltage terminal strips), the following steps must be done:
5.7 Boiler Cascade: Set Boiler Address
Assign the Boiler Address in the managing control of each boiler in
the cascade, following the path below on the Sevice display:
Menu->Setting->Boiler Settings->Boiler Cascade Settings->(73)
Boiler Address
BOILER
(73) Boiler
Address
BOILER
(73) Boiler
Address
Managing Managing Dependent 4 Dep. 4
Dependent 1 Dep. 1 Dependent 5 Dep. 5
Dependent 2 Dep. 2 Dependent 6 Dep. 6
Dependent 3 Dep. 3 Dependent 7 Dep. 7
5.7.1 Boiler Cascade: Set Power Switch S1
On the Managing controller of the Cascade Managing Boiler, the
Power Switch S1 must be in ON position (see picture below).
The S1 switch must be in OFF position on all other controllers of the
dependent boilers in the cascade.
J8
J11
905MN
S1
Dip Switch
12345678
Fig. 45 Set Power Switch S1

Riello Array AR 3000 Specifications

General

Brand	Riello
Model	Array AR 3000
Category	Boiler
Language	English