Enerblue · High-efficiency chillers with natural refrigerant

Enerblue SILVER

Water chillers with inverter screw compressors and natural refrigerant

Cooling capacity: 308 – 768 kW
Heating capacity: (up to 200 kW in DS version)
Efficiency: EER: 2.8 to 3.1
SEER: 4.3 to 4.6
Energy: Electricity

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Technical data

Key data

Cooling capacity: 308 – 768 kW
Heating capacity: (up to 200 kW in DS version)
Rating conditions: A35;W7
Energy: Electricity
Output temperature: from +20 ºC to -10 ºC
Refrigerant: R290 (propane)
Efficiency: EER: 2.8 to 3.1
SEER: 4.3 to 4.6
Energy class: ErP Ecodesign compliant

Main advantages

Semi-hermetic screw compressors with variable frequency drive, built for industrial durability
Maximum part-load efficiency with control from 25 to 100 %
High-efficiency, low-consumption EC axial fans
Isolated, soundproofed compressor enclosure with ATEX ventilation and R290 leak detector
Optional heat recovery unit

Models

Enerblue SILVER models

Technical data from the manufacturer's data sheet.

SILVER
Model	Unit	300.1	340.1	350.2	370.2	410.2	460.2	540.2	600.2	650.2	710.2	770.2
COOLING (EN 14511-3:2022 VALUES) (A35;W7)
Nominal cooling capacity (1), (5)	kW	308	343	353	373	409	458	538	597	651	712	768
Total power input in cooling (1), (5)	kW	100	111	116	119	127	150	174	189	213	245	261
EER (1), (5)		3.08	2.96	3.18	3.13	3.22	3.05	3.09	3.16	3.06	2.91	2.94
ErP SEASONAL ENERGY INDICES (1 INVERTER VERSION)
SEER (water 7°C) (1)		4.41	4.16	4.22	4.26	4.65	4.51	4.9	4.78	4.73	4.82	4.84
Seasonal energy efficiency ηsc (1)	%	173.3	163.5	165.8	167.4	183	181.4	193	188.2	186.2	190	190.5
SEPR HT (high-temp. process) (1)		5.3	5.4	5.53	5.27	5.67	5.53	5.52	5.59	5.55	5.5	5.52
ErP SEASONAL ENERGY INDICES (FULL INVERTER VERSION)
SEER (water 7°C) (1)			4.35		4.44	4.7	4.95	4.7	4.97	4.9	4.95	4.9
Seasonal energy efficiency ηsc (1)	%		171		174.6	185	195	185	195.8	193	195	193
SEPR HT (high-temp. process) (1)			5.83		5.45	5.89	5.81	5.91	5.95	5.76	5.82	5.78
COOLING + HEATING (EN 14511 VALUES) (W7;W45) - DS VERSION (DESUPERHEATER)
Nominal heat output (DS recovery) (7)	kW	54.8	59.6	62.2	62.7	68.1	88.3	98	101	112	132	145
Nominal cooling capacity (7)	kW	309	344	354	374	410	462	542	599	655	716	773
Total power input (7)	kW	101	115	112	119	127	150	174	190	213	244	260
TER (Total Efficiency Ratio) (7)		3.6	3.69	3.53	3.67	3.76	3.67	3.68	3.68	3.6	3.48	3.53
COOLING + HEATING (EN 14511 VALUES) (W7;W45) - DC VERSION (TOTAL RECOVERY)
Nominal heat output (DC recovery) (8)	kW	394	442	445	470	512	688	587	747	821	939	1,000
Nominal cooling capacity (8)	kW	298	337	335	358	393	447	526	565	616	713	762
Total power input (8)	kW	97.1	106	112	114	119	164	141	184	207	228	242
TER (Total Efficiency Ratio) (8)		7.13	6.96	7.35	7.26	7.61	7.4	7.33	7.13	6.94	7.25	7.28
COMPRESSOR AND REFRIGERANT (R290)
Compressor type		Semi-hermetic screw
No. of compressors / circuits	No. / No.	1 / 1	1 / 1	2 / 2	2 / 2	2 / 2	2 / 2	2 / 2	2 / 2	2 / 2	2 / 2	2 / 2
Capacity control (min / max)	%	50 / 100	50 / 100	25 / 100	25 / 100	25 / 100	25 / 100	25 / 100	25 / 100	25 / 100	25 / 100	25 / 100
R290 charge per circuit	kg	20.8	13.0	20.8	13.0	13.9	19.5 / 14.7	13.9	19.9	19.9	20.9	20.9
EC AXIAL FANS AND USER-SIDE HEAT EXCHANGER
Fan type		EC axial
No. of fans	No.	6	8	6	8	8	10	8	12	12	12	12
Total air flow	m³/h	147,688	197,665	147,688	197,665	197,665	197,665	245,956	295,734	295,734	295,734	295,734
User heat exchanger type		Brazed plate
User water flow (A35;W7) (1)	m³/h	52.9	58.9	60.7	64.1	70.3	78.8	92.6	102.6	112	122.3	132
Water pressure drop (1)	kPa	8.1	20.7	9.8	22.9	16.3	20	21	19.8	22.9	20.1	22.3

Notes and reference conditions (Enerblue SILVER technical catalogue - p. 10):
(1) Outdoor air temperature 35 °C; evaporator water inlet-outlet temperature 12-7 °C.
(5) Values calculated in accordance with EN 14511-3:2022.
(7) DS version (desuperheater): evaporator water inlet-outlet temperature 12-7 °C; desuperheater water inlet-outlet temperature 40-45 °C (20 % partial recovery).
(8) DC version (total recovery): evaporator water inlet-outlet temperature 12-7 °C; condenser water inlet-outlet temperature 40-45 °C (100 % total recovery).

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