Features and technical data
Installation, use and maintenance manual – AY
13
1
1.4
ELECTRONIC BOARDS
The unit's electrical board contains:
▶
Electronic board MIAH410, with microprocessor, it
controls the appliance and displays data, messages
and operative codes. The appliance is monitored and
programmed by interacting with the control panel on
the boiler.
▶
CAN-NDG electronic board, controls CAN bus com-
munication with the DDC panel.
1.5
CONTROLS
1.5.1
Control device
The appliance may only work if it is connected to a control
device, selected from:
▶
DDC control
▶
external request
1.5.2
DDC Controller
The DDC control is able to manage one or more Robur ap-
pliances in ON/OFF mode (GAHP heat pumps, GA chillers)
or modulating mode (AY boilers).
The main functions are:
▶
Adjustment and control of one (or more) Robur units
of the absorption line (GAHP, GA, AY).
▶
Data display and parameters setting.
▶
Hourly programming.
▶
Climatic curve control.
▶
Diagnostics.
▶
Errors reset.
▶
Possibility to interface with a BMS.
DDC functionality may be extended with auxiliary Robur
devices RB100 and RB200 (e.g. service requests, DHW pro-
duction, third party generator control, probe control, sys-
tem valves or circulating pumps, ...).
For further details refer to the DDC, RB100, RB200
manuals and the design manual.
1.5.3
External request
The appliance may also be controlled via generic request
devices (e.g. thermostat, timer, switch, contactor...) fitted
with voltage-free NO contact. This system only provides
elementary control, hence without the important func-
tions of the DDC control. It is advisable to possibly lim-
it its use to simple applications only and with a single
appliance.
In the case of the AY 100 appliance, two separate
requests must be provided for the two thermal
modules that make up the appliance.
For connection of the selected device to the appli-
ance's electronic board please refer to Paragraph
4.4.5
1.6
TECHNICAL DATA
Table 1.1
Technical data
AY 35
AY 50
AY 100
Heating mode
seasonal space heating energy efficiency class (ErP)
-
A
-
Heat input
nominal (1013 mbar - 15 °C) (1)
kW
34,0
50,0
99,8
minimum (1)
kW
4,1
5,0
Operating point 80/60
Nominal heat input
effective
power
kW
33,4
49,2
98,4
efficiency
%
98,2
98,4
98,5
Operating point 50/30
Nominal heat input
efficiency
%
106,4
106,8
Operating point Tr = 30 °C
Heat input 30%
efficiency
%
108,6
108,8
Operating point Tr = 47 °C
Heat input 30%
efficiency
%
102,1
102,8
Heat losses
to casing in operation
%
0,25
0,10
0,47
to flue in operation
%
2,40
2,10
with burner off
%
0,03
0,05
0,03
Heating water flow
nominal
l/h
2600
2350
4700
minimum
l/h
1200
1500
Hot water outlet temperature
maximum
°C
88
Outdoor temperature (dry bulb)
maximum
°C
45
minimum
°C
-25
Electrical specifications
Power supply
voltage
V
230
type
-
single-phase
frequency
Hz
50
Electrical power absorption
nominal
kW
0,22
0,25
0,49
(1) Relative to NCV (net calorific value).
(2) Gas not available for AY 35.
(3) 2 independent flue gas exhausts.
(4) For each of the independent flue gas exhausts.
