Features and technical data
16
1
1.6
OPERATION MODE
ON/OFF or modulating operation
The GAHP unit may work in two modes:
▶
mode (1) ON/OFF, i.e. On (at full power) or Off, with circulat-
ing pump at constant or variable flow;
▶
mode (2) MODULATING, i.e. at variable load from 50% to
100% of power, with circulating pump at variable flow.
For each mode, (1) o (2), specific control systems and devices are
provided (Paragraph 1.5
p. 13).
1.7
CONTROLS
Control device
The appliance may only work if it is connected to a control de-
vice, selected from:
▶
(1) DDC control
▶
(2) CCP/CCI control
▶
(3) external request
1.7.1
Adjustment system (1) with DDC (GAHP unit
ON/OFF)
The DDC controller is able to control appliances, a single GAHP
unit, or even several Robur GAHP/GA/AY units in cascade, only
in ON/OFF mode (non modulating). For more details refer to the
DDC, RB100, RB200 Manuals and the Design Manual.
DDC Controller
The main functions are:
▶
setup and control of one (or more) Robur units of the ab-
sorption line (GAHP, GA, AY);
▶
parameter figures display and setting;
▶
hourly programming;
▶
climate curve control;
▶
diagnostics;
▶
reset errors;
▶
possibility to interface with a BMS;
DDC functionality may be extended with auxiliary Robur devices
RB100 and RB200 (e.g. service requests, DHW production, Third
Party generator control, probe control, system valves or circulat-
ing pumps, ...).
1.7.2
Adjustment system (2) with CCP/CCI
(modulating GAHP unit)
The CCP/CCI control is able to control up to 3 GAHP units in mod-
ulating mode (therefore A/WS/GS only, excluding AR/ACF/AY),
plus any integration ON/OFF boiler. For additional details and
diagrams refer to the CCP/CCI Manual and the Design Manual.
CCP/CCI Control
See CCP/CCI device Manual.
1.7.3
Adjustment system (3) with external request
(GAHP unit ON/OFF)
The appliance may also be controlled via generic enable devic-
es (e.g. thermostats, clocks, buttons, contactors...) fitted with
voltage-free NO contact. This system only provides elementary
control (on/off, with fixed set-point temperature), hence without
the important functions of systems (1) and (2). It is advisable to
limit its possible use only to simple applications and with a sin-
gle appliance.
For connection of the selected device to the appliance's
electronic board please refer to Paragraph 4.4
1.8
TECHNICAL CHARACTERISTICS
Table 1�1
GAHP A HT technical data
GAHP A HT
Standard
GAHP A HT S1
Heating mode
Seasonal space heating energy efficiency
class (ErP)
medium-temperature application (55 °C)
A+
low-temperature application (35 °C)
A+
Unitary heating power
Outdoor temperature/Delivery
temperature
A7W35
kW
41,3
A7W50
kW
38,3
A7W65
kW
31,1
A-7W50
kW
32.0
GUE efficiency
Outdoor temperature/Delivery
temperature
A7W35
%
164
A7W50
%
152
A7W65
%
124
A-7W50
%
127
Heating capacity
nominal (1013 mbar - 15 °C)
kW
25,7
true peak
kW
25,2
Hot water delivery temperature
maximum for heating
°C
65
maximum for DHW
°C
70
Hot water inlet temperature
maximum for heating
°C
55
maximum for DHW
°C
60
minimum temperature in continuous operation
°C
(1) In transient operation, lower temperatures are allowed.
(2) For flows other than nominal see Design Manual, Pressure losses Paragraph.
(3) As an option, a version for operation down to -30 °C is available.
(4) ±10% depending on power voltage and absorption tolerance of electric motors.
(5) PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).
(6) PCI (G25) 29,25 MJ/m³ (15 °C - 1013 mbar).
(7) PCI (G27) 27,89 MJ/m³ (15 °C - 1013 mbar).
(8) PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).
(9) Sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614.
(10) Maximum sound pressure levels in free field, with directionality factor 2, obtained from the sound power level in compliance with standard EN ISO 9614.
(11) Overall dimensions excluding fumes pipes.
30 (1)
