Robur GAHP-AR, Installation, Use And Maintenance Manual

Features and technical data

14

1

Figure 1.8  

 AR11 electronic board

F1 

 T 2A fuse

F2 

 T 2A fuse

JP1 

 AR11 satellite board connector

J1 

 Jumper N.O. contact

J2 

 Appliance status display

J3 

 Reversible valve motor power supply

J4 

 Board power supply

FS1 

 Defrosting valve N.O. contact

1.6 

 CONTROLS

Control device

The appliance may only work if it is connected to a control de-

vice, selected from:

▶

DDC controller

▶

external request

1.6.1 

   Control system (1) with DDC (GAHP unit ON/

OFF)

The DDC controller is able to control appliances, a single GA 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).

▶

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 production, Third 

Party generator control, probe control, system valves or circulat-

ing pumps, ...).

1.6.2 

   Control system (2) with external request for 

heating or cooling (GAHP unit ON/OFF)

The appliance may also be controlled via generic enable devices 

(e.g. thermostat, timer, switch, contactor...) fitted with voltage-

free NO contact. This system only provides elementary control 

(on/off, with fixed setpoint temperature), hence without the im-

portant functions of system (1). It is advisable to possibly limit 

its use to simple applications only and with a single appliance.  

For connection of the selected device to the appliance's 

electronic board please refer to Paragraph 4.4 

p. 26.

1.7 

 TECHNICAL  DATA

Table 1.1  

 GAHP-AR technical data

GAHP-AR

Heating mode
Heating capacity

nominal (1)

kBtu/hr

120.4

Gas input (HHV)

nominal

kBtu/hr

95.5

GUE

nominal (1)

%

126

Hot water outlet temperature

maximum (ΔT = 27 °F)

°F

140

nominal

°F

122

Hot water inlet temperature

maximum

°F

122

minimum temperature in continuous operation

°F

35.6

Heating water flow

maximum

GPM

22.0

nominal (ΔT = 18 °F)

GPM

13.4

minimum

GPM

6.2

ΔT

nominal

°F

18

Pressure drop heating mode

at nominal water flow

Feet of Head

psig

9.8
4.2

Ambient operating temperature (dry bulb)

nominal

°F

44.6

maximum

°F

85

minimum

°F

-20

Cooling mode

(1) 

Heating capacity at standard conditions of 44.6 °F ambient temperature (dry bulb). Outlet water temperature 122 °F, inlet 104 °F.

(2) 

Cooling capacity at standard conditions of 95 °F ambient temperature (dry bulb). Outlet water temperature 45 °F, inlet 55 °F.

(3) 

Fan speed is reduced when external temperature is less than 91.4 °F

(4) 

±10% according to the power supply voltage and tolerance on electrical motors consumption. Measured at outdoor temperature of 86 °F.

(5) 

HHV (natural gas) 1014 BTU/CU.FT.

(6) 

Overall dimensions excluding fumes pipes.