IM-P408-04
EMM Issue 7
19
B850-W and B850-P Boiler House Energy Monitor
Note: Before actioning any installation observe the 'Safety
information' in Section 2.
9.1 Important -
please read the following general wiring notes:
Every effort has been made during the design of the energy monitor to ensure the
safety of the user but the following precautions must be followed:
1.
Installation personnel must be suitably qualified in working with equipment
containing hazardous live voltages.
2.
Ensure correct installation. Safety may be compromised if the installation of the
product is not carried out as specified in this manual.
3.
Always isolate the energy monitor from the mains supply before opening the
unit.
4.
The design of the energy monitor relies on the building installation for overcurrent
protection and primary isolation.
5.
Overcurrent protection devices rated at 1 amp must be included in all phase
conductors of the installation wiring. If overcurrent protection is included in both
supply wires then the operation of one must also cause the operation of the
other. Refer to IEC 60364 (Electrical Installations of Buildings) or prevalent local
standard for full details of requirements for overcurrent protection.
6.
Overcurrent protection devices must be fitted to the relay circuit and appropriately
rated for the given loads stated in the technical data.
7.
Relay contacts must be supplied at the same phase as the product's mains
supply.
8.
The wall energy monitor (B850-W) is designed as an installation category
product.
9.
Install wiring in accordance with:
-
IEC 60364 - Low-voltage electrical installation.
-
National and Local Electrical Code (NEC) or Canadian
code CEC) for the US and Canadian markets. Note; use
NEC Class 1 wire with a temperature rating greater than
75°C. If the cable is to be exposed to a higher temperature,
then a higher temperature rating needs to be selected.
10.
All external circuits must meet and maintain the requirements of double/
reinforced installation as stated in IEC 60364 or equivalent.
11.
Additional protection must be provided to prevent accessible parts (e.g. signal
circuits) from becoming Hazardous Live if a wire or screw is accidentally
loosened or freed. Ensure all wires are secured to at least one other wire from
the same circuit. The attachment must be as close to the terminal block as
possible but must not apply undue stress on the connection. Example, use a
cable tie to secure the live and neutral wire together. If one wire becomes loose
the other wire will prevent it from touching accessible parts.
9. Electrical installation
