Riello Array AR 3000, Installation And Operation Manual

Page: 22 / 72

22
INSTALLATION
Power Supply
connection
Fig. 22 Power supply connection
GND L3
Neutral
L1 L2
Fig. 23
230VAC Power Supply connection
If an external electrical power source is used, the installed boiler
must be electrically bonded to ground in accordance with the
requirements of the authority having jurisdiction. In the absence
of such requirements, the installation shall conform to National
Electrical Code (NEC), ANSI/NFPA 70 and/or the Canadian Electrical
Code (CEC) Part I, CSA C22.1 Electrical Code.
4.14 Field Control Wiring
Each unit is fully wired from the factory with an internal operating
control system. No field control wiring is required for normal
operation.
However, the control system used with all Array boilers does
allow for some additional control and monitoring features. Wiring
connections for these features are made on the Input / Output (I/O)
terminal strips located behind the removable cover on the inner
side of the front door of the unit, as shown in Fig. 24.
NOTE: Any electrical load connected to the terminal strip (external
pumps, air damper, alarm) must be powered through a relay, not
included in the boiler, to be provided and wired by the installer.
101 102 104 105 106 107 108 109 110 111 112 113 114 115 103
ALARM MAIN /
CH PUMP
Air Damper
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
CASCADE
LINK
AIR
DAMPER
Out
Door
Supply
Sensor System
Sensor
BMS - RS485
GND
GND
DHW Tank
Sensor
Enable /
Disable
0-10 V
+ + -
DHW 3-WAY CH
DHW Pump CH Pump
Fig. 24
I/O Terminal Strips
All field wiring is installed from the rear of the panel by routing the
wires through one of the openings provided on the sides of the
cover panels (see Fig. 24).
Openings for wires
Fig. 25 Opening on the Cover Panel
4.14.1 Enable/Disable (Room thermostat connection)
The Enable/Disable (Room thermostat) terminals (dry contacts)
come pre-wired closed (jumped) from the factory. For connecting
a room thermostat, the jumper must be removed and the
thermostat wires must be connected to terminals 11 and 12, as
shown in Fig. 24.
4.14.2 Air Damper
The Air Damper output comes disabled from the factory. For
connecting an air damper, the Programmable Output 3 must be
set to 10 and the damper wires must be connected to terminals 3
and 4, as shown in Fig. 24.
The Air Damper is connected to output J3-6 which is a Triac
controlled output.