Scroll compressor ESH Tandem - 2 x ESH743(B)Y

BITZER offers kits for tandem units for parallel operations. They consist of two compressors connected in parallel and provide significant benefits over individual compressors with the same output. The compound compressor units are distinguished by groundbreaking technical features, extraordinarily high energy efficiency and reliability.

Efficient capacity control through pairs of compressors with equal and unequal displacements
Optimised pressure and suction pipe arrangement in combined compressor unit
Reliable oil and gas equalisation
Solid frame construction for low vibration levels
Compressor with Rotalock or direct brazing connections
Suitable for the refrigerants R134a, R407C, R404A, R507A and R22

Performance data
Technical data

With R134a (Polyolester oil BSE35K required.)

Compressor type	Cond.temp.	Qo / Pe	Saturated suction temperature °C
Compressor type	[°C]	Qo / Pe	12,5	10	7,5	5	0	-5	-10	-15
2 x ESH743(B)Y	30	Qo	88400	80800	73600	67000	55200	45150	36500	29150
	30	Pe	11,07	10,97	10,90	10,85	10,80	10,79	10,78	10,74
	40	Qo	80100	73200	66700	60700	49900	40700	32800	26150
	40	Pe	13,39	13,35	13,32	13,30	13,28	13,26	13,24	13,17
	50	Qo	71400	65100	59300	53900	44300	36050	29000	23000
	50	Pe	16,54	16,53	16,51	16,50	16,48	16,44	16,38	16,28

Qo - Cooling capacity [Watt], Pe - Power consumption [kW]

With R407C (Polyolester oil BSE35K required.)

Compressor type	Cond.temp.	Qo / Pe	Saturated suction temperature °C
Compressor type	[°C]	Qo / Pe	12,5	10	7,5	5	0	-5	-10	-15
2 x ESH743(B)Y	30	Qo	129300	118400	108200	98700	81800	67300	54800	44150
	30	Pe	15,61	15,59	15,58	15,55	15,51	15,45	15,37	15,28
	40	Qo	117000	106900	97600	89000	73500	60200	48800
	40	Pe	19,42	19,41	19,40	19,39	19,35	19,30	19,23
	50	Qo	103400	94400	86100	78400	64500	52500
	50	Pe	24,58	24,56	24,54	24,52	24,47	24,41

Qo - Cooling capacity [Watt], Pe - Power consumption [kW]

Saturated suction and discharge temperatures are based on dew point temperatures (according to EN 12900).

With R404A / R507A (Polyolester oil BSE35K required.)

Compressor type	Cond.temp.	Qo / Pe	Saturated suction temperature °C
Compressor type	[°C]	Qo / Pe	12,5	10	7,5	5	0	-5	-10	-15
2 x ESH743(B)Y	30	Qo				111100	93500	78300	65000	53600
	30	Pe				17,95	17,87	17,82	17,80	17,78
	40	Qo			105600	97100	81700	68300	56700	46650
	40	Pe			22,44	22,36	22,27	22,22	22,21	22,19
	50	Qo			89100	82000	69000	57700	47800	39200
	50	Pe			28,16	28,05	27,89	27,80	27,74	27,69

Qo - Cooling capacity [Watt], Pe - Power consumption [kW]

Data are valid for R404A. Slight variations have to be considered for R507A

With R22

Compressor type	Cond.temp.	Qo / Pe	Saturated suction temperature °C
Compressor type	[°C]	Qo / Pe	12,5	10	7,5	5	0	-5	-10	-15
2 x ESH743(B)Y	30	Qo	129100	118900	109300	100400	84200	70200	58000	47500
	30	Pe	16,23	16,02	15,84	15,69	15,44	15,26	15,12	14,98
	40	Qo	118500	109000	100100	91900	76900	63900	52600
	40	Pe	19,57	19,50	19,43	19,36	19,22	19,10	18,98
	50	Qo	107200	98500	90300	82800	69000	57100
	50	Pe	24,34	24,30	24,25	24,21	24,13	24,05

Qo - Cooling capacity [Watt], Pe - Power consumption [kW]

Compressor type	Dis place-ment 50 Hz	Oil charge	Weight	Pipe connections				Motor	Electrical Data			Assembly kit no.
	Dis place-ment 50 Hz	Oil charge	Weight	Discharge line (DL)		Suction line (SL)			max. workingcurrent	max. power con-sumption	Starting currentRLA	Rotalock version	Version "B"
	m3/h	dm3	kg	mm	inch	mm	inch		Amp	kW	Amp	Rotalock version	Version "B"
2 x ESH743(B)Y	86	8,0	202	28	1 3/8	54	2 1/8	380..420 V/3/50 Hz 440..480 V/3/60 Hz	2 x 32	2 x 17,5	2 x 152	35810301	35810401

Scroll Compressors ESH Tandem - 2 x ESH743(B)Y

Scroll compressor ESH Tandem - 2 x ESH743(B)Y

With R134a (Polyolester oil BSE35K required.)

With R407C (Polyolester oil BSE35K required.)

With R404A / R507A (Polyolester oil BSE35K required.)

With R22