EpiSensor ZHM-21 User manual

Install Sheet
ZHM-21 // Wireless M-Bus Interface
Document Ref. EPI-086-00
Installation & Safety Notes
➔EpiSensor equipment should be installed, operated, serviced and
maintained only by qualified personnel. EpiSensor does not
assume any responsibility for any consequences arising out of
the use of this equipment.
➔NEVER work alone.
➔Use appropriate personal protective equipment (PPE) and follow
safe electrical work practices.
➔Turn off all power supplying the area in which the device is being
installed before working on it.
➔Always use a properly rated voltage sensing device to confirm
that all power is off.
➔The mains power supply is rated for up to 264 V AC. Consult the
product datasheet for more information on safe operating
conditions.
➔Clearly label the device’s disconnect circuit mechanism and
install it within easy reach of the operator.
➔The fuses / circuit breakers must be rated for the installation
voltage and sized for the available fault current.
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
Wiring Diagram
Important: Fused
disconnect or circuit
breakers (not
supplied) to protect
0.75mm2 conductor
according to local
electrical
regulations (min.
500mA)
Live
Neutral
Connect to
M-Bus
Supply Voltage: 85 - 264 VAC
Keyhole
Spacing:
122mm
(4.8 inches)
Connect
to Valve
Important: Mains
voltage
See ZHM user manual for
detailed instructions
M-Bus
Valve

Install Sheet
ZHM-21 // Wireless M-Bus Interface
Document Ref. EPI-086-00
Relay Output
RELAY CONTACTS
COM
NO
NC
L
N
L
N
ENCLOSURE
Gland
Cable to Valve
Loads not greater than 200W should be controlled by the ZHM-21. At least one of the output
terminals will have mains voltage. Installation should be carried out solely by suitably
qualified personnel who should refer to the product documentation in advance.
IMPORTANT SAFETY NOTICE