DL-E 50/160-5,5/2-S1

Article number: 2171064

Hydraulic data
Minimum efficiency index (MEI)	≥0.4
Maximum operating pressure PN	16 bar
Note on dimensioning	16 bar to 120 °C, 13 bar to 140 °C
Min. fluid temperature T_min	-20 °C
Max. fluid temperature T_max	140 °C
Min. ambient temperature T_min	0 °C
Max. ambient temperature T_max	40 °C

Approved liquids (other liquids upon request)
Heating water (as per VDI 2035)	yes
Heat carrier oil	Special version at additional charge
Cooling and cold water circulation systems	yes
Water-glycol mixtures (at 20 – 40 vol. % glycol and fluid temperature ≤ 40 °C)	yes

Installation dimensions
Port-to-port length L0	340 mm
Pipe connection on the suction side DNs	DN 50
Pipe connection on the discharge side DNd	DN 50

L1, L2, L3:	Mains connection: 3~440 V ±10%, 50/60 Hz; 3~400 V ±10%, 50/60 Hz; 3~380 V -5%/+10%, 50/60 Hz
PE:	Protective conductor connection
DDG:	Connection for differential pressure sensor
In1 (1):	Actual value input 0-10 V/0-20 mA; 2-10 V/4-20 mA
GND (2):	Ground connection for In1 and In2
+ 24 V (3):	DC voltage output for an external consumer/sensor. Max load 60 mA
In2:	Setpoint input 0-10 V/0-20 mA; 2-10 V/4-20 mA
MP:	Multi-pump, interface for dual pump management
Ext. off:	Control input “Overriding Off”The pump can be switched on or off via an external, potential-free contact (24 V DC/10 mA).
SBM:*	Potential-free collective run signal (changeover contact according to VDI 3814)
SSM:*	Potential-free collective fault signal (changeover contact according to VDI 3814)
aux:	External pump cycling (only with dual pump operation). Pump cycling can be performed using an external, potential-free contact (24 VDC/10 mA)
DIP switch:	1: Switchover between operation (O) and service mode (S)2: Activate/deactivate the menu for access disable
Optional:	IF-Modules for connection to the building automation
* Load capacity of contacts for SBM and SSM: min.: 12 V DC/10 mA max.: 250 V AC/1 A

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