Robur · Absorption chillers

Robur GA ACF HR

Gas-fired absorption chillers

Cooling capacity: 17.7 – 88.5 kW
Heating capacity: 21 – 105 kW
Efficiency: GUE 155%
Energy: Natural gas or LPG

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Technical data

Key data

Cooling capacity: 17.7 – 88.5 kW
Heating capacity: 21 – 105 kW
Rating conditions: A35W7
A35W40
Energy: Natural gas or LPG
Output temperature: Chilled water down to 3 ºC.
Hot water at 58 ºC
Refrigerant: R717 (ammonia)
Efficiency: GUE 155%

Main advantages

In cooling mode, it provides DHW up to 75 ºC
Up to 86 % lower electricity consumption
Natural refrigerant, no fluorinated gases
Ideal for areas with limited electrical capacity

Models

Robur GA ACF HR models

Technical data from the manufacturer's data sheet.

GA ACF HR
Model	Unit	Standard	Low-noise
GENERAL DATA
Version / application		Chiller with heat recovery: hot water recovered while cooling
Refrigerant (natural, ammonia)		R717
Exempt from the F-Gas regulation		Yes
Hydrogen allowed in gas blend (H2NG Hydrogen Ready)	%	0.2
Electricity saving compared with an electric chiller	%	0.86
COOLING MODE
Cooling capacity (outdoor 35°C / water outlet 7°C, A35W7)	kW	17.7
Cooling capacity (outdoor 35°C / water outlet −5°C, A35W-5)	kW
Heat input	kW	25
GUE (gas utilisation efficiency) in cooling	%	0.708
Minimum chilled water outlet temperature	°C	3
Maximum chilled water inlet temperature	°C	45
Minimum chilled water inlet temperature	°C	8
Nominal chilled water flow	l/h	2,770
Internal pressure drop at nominal flow	bar	0.29
Maximum outdoor temperature	°C	45
Minimum outdoor temperature	°C	0
HEAT RECOVERY CIRCUIT (GA ACF HR only)
Recovered heat output (outdoor 35°C / inlet 40°C / 1,000 l/h, A35W40)	kW	21
Nominal hot water inlet temperature	°C	40
Nominal hot water outlet temperature	°C	58
Nominal hot water flow	l/h	1,000
Total GUE (A35W7, recovery inlet 40°C, 1,000 l/h)	%	1.55
Maximum free hot water temperature	°C	75
ELECTRICAL DATA
Supply voltage	V	230
Supply type		Single-phase
Frequency	Hz	50
Electrical power input	kW	0.82	0.87
Protection rating	IP	X5D
INSTALLATION DATA
Natural gas G20 consumption (nominal)	m³/h	2.68
LPG G30/G31 consumption (nominal)	kg/h	1.97
Sound pressure level Lp at 5 m (max.)	dB(A)	57.6	53
Maximum water circuit working pressure	bar	4
Water connection: type		Female (F)
Water connection: thread	in	1 1/4
Gas connection: type		Female (F)
Gas connection: thread	in	3/4
Dimensions: width	mm	850
Dimensions: height	mm	1,446	1,516
Dimensions: depth	mm	1,256
Operating weight	kg	390