Product Overview

Mounting instructions are enclosed with the valve: Ref. 35541(connection terminal)
and Ref. 35548 (valve).
The refrigerant valves can be mounted in any orientation, but upright mounting is
preferable. The pipes should be fitted such that the alignment does not distort the valve
connections. Before soldering the pipes, ensure that the direction of flow through the
valve is correct.
The pipes must be soldered with care. The flame should be large enough to ensure that
the junction heats up quickly and the valve does not get too hot. The flame should be
directed away from the valve. Cool the valve body with a wet cloth while soldering.
Port 2 must be sealed off when the valve is used in a straight-through application.
Caution : Always switch off the power supply before connecting or
disconnecting the ZM... terminal housing.
The modulating control valves for hot gas control from the M3FB...LX... series require no
maintenance.
Electrical interface: Only admissible with low voltage (SELV, PELV)
Control signals: ZM101/A DC 0 ...10 V or DC 0 ... 20 V phase cut
ZM121/A DC 4 ... 20 mA or DC 0 ... 20 V phase cut
ZM111 DC 0 ... 20 V phase cut
Supply voltage AC 24 V for DC 0 ...10 V and DC 4 ... 20 mA
– Max. voltage tolerance +15/–10 %
Nominal power See table on page 1
Operating pressure p
e
max
3.2 MPa (32 bar)
Pressure differential
∆
p
v
max
1 –> 3 See table on page 1
1 –> 2 0.8 MPa (8 bar)
Leakage: 1 –> 3 Max 0.05% k
vs
(to VDI/ VDE2174)
1 –> 2 Max 0.5% k
vs
Temperature of medium – 40 ...120 °C
Valve characteristic (stroke, k
v
) Linear, optimised in low opening range
Resolution
∆
H / H
100
> 1 : 200 (H = stroke)
Type of operation Modulating
Position when de-energised 1 –> 3 closed
Orientation Any
Positioning time Approx. 1 s
Materials (valve body):
Housing components Steel and copper
Seat / inner valve Bronze / CrNi steel
Pipe connections Extended female solder unions
Connection terminals Screw terminals for 4 mm
2
wire
Protection standard IP54 to IEC529
Ambient temperature – 40 ... 50 °C
Weight See 'Dimensions' on page 8
Conformity Meets the requirements for CE marking
Mounting notes
Maintenance notes
Technical data
Beijing shenglanjieneng Electromechanical Company TEL:[phone] FAX:[phone] www.bjsljn.com