Glow-worm Clearly Solar Cylinders - Manual (Page 22)

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INSTALLATION
9.7 electrical installation
a Improperly executed electrical connections can impair
the operational safety of the unit.
- Only a competent person approved at the time by
the Health and Safety Executive may carry out the
electrical installation.
e Without earthing, life-threatening voltage can reach
the piping and water draw-off points.
- Earth the cylinder.
Wiring should be installed by a qualified heating engineer in
accordance with the building regulations, Part P of the current IEE
regulations, and all other applicable regulations and directives.
You can use standard commercial cables (H05RR-F 3G1.5 or
H05VV-F 3G1.5) for the wiring:
- Cross-section of conductors: 1.5 mm
2
- Torque for strain relief: 1,5 Nm.
- Maximum length of bus cables: 300m.
230 V supply lines and bus cables must be laid separately above
lengths of 10 m.
The discharge pipes of the tundish, drain valves, and motorised
valves etc. must be laid at a distance from electrical components.
9.7.1 Wiring
Wiring can be accommodated via the Glow-worm Smart Wiring
Centre or Systempro as a system solution. This enables Glow-
worm dual-channel eBUS controllers (low-voltage) to be used
along with 230 V valves to give control of Hot Water and Heating
systems. Alternatively, using a standard 230 V cabling box and
controls.
All wiring must be carried out in accordance with BS
7671: "Requirements for electrical installations" (IEE
wiring regulations, current edition).
Smart Wiring Centre will accomodate 1 CH plus 1 DHW
zone. Systempro will accomodate up to 3 CH zones
plus 1 DHW zone.
9.7.3 Mounting the drain valve
- Mount a drain valve in the cold water pipe at the lowest point
between the cylinder and the safety assembly.
The drain valve must be provided by the customer. We
recommend applying a hose which reaches about 1 m under the
base of the cylinder to the outlet of the drain valve.
9.7.4 electrical connection of control components
6
1
2
7
5
10 9
3
4
5
8
Key
1 Cover cap for reset button for reheating circuit TCO
2 Reheating circuit temperature controller
3 Reheating circuit immersion sleeve (TaC 1)
4 electric immersion heater cover
5 solar circuit immersion sleeve (TaC 2)
6 Cover cap for reset button for solar circuit TCO
7 solar circuit safety thermostat (TCO)
8 electric immersion heater
9 Reheating circuit safety thermostat
10 Cylinder thermostat