Hamworthy FLEET Series Installation, Commissioning And Operating Instructions page 56

APPENDIX B - ELECTRICAL CONNECTIONS AND CONTROLS
ELECTRICAL DATA
Nominal supply voltage
Power Consumption (maximum)
Start and Run Current (per module)
Nominal supply voltage
Power Consumption (maximum)
Start and Run Current (per module)
Figure B1.1 - Electrical supply
B1.1 Electrical Supply
IMPORTANT: Individual boilers must be earthed.
The boiler must be isolated from the mains electricity supply in the event of electric arc
welding being carried out on any connecting pipe work.
1. Wiring external to the boiler must be installed in accordance with the IEE Regulations and any local regulations
which apply. Wiring must be completed in heat resistant 3-core cable of 1.0mm² cross sectional area. Boilers are
normally supplied for connection to a 230 volts, 50Hz mains supply. The boiler control is supplied with a
replaceable fuse (T4A). External fuses should be 6A for all boilers.
2. 3-Phase Electrical Supplies. Individual modules of Fleet boilers and any boilers installed in close proximity to
each other MUST NOT be supplied from different phases of a 3 phase supply. The method of connection to the
mains electricity supply must facilitate complete electrical isolation of the single boiler / battery with a separation of
at least 3mm in all poles.
3. A mains isolator must be provided adjacent to the boiler in a readily accessible position. The supply should only
serve the boiler.
4. Multiple modules. It is highly recommended that each boiler is connected via its own mains isolator to facilitate
servicing and maintenance of the individual boiler whilst leaving the remaining boilers in operation.
5. Further details regarding connection to the electricity supply are given in BS EN 60335, Part 1 or BS 3456, Part
201.
WARNING: THE MAINS POWER SUPPLY MUST NOT BE SWITCHED
CAUTION: DO NOT FEED MAINS VOLTAGE ONTO THE TIMER TERMINALS
6. The mains power supply must be maintained at all times. Each Fleet boiler module incorporates a remote
enable link, which can be used to operate the boiler(s) under a timed regime. The boiler controls provide a 24V
DC signal that can be fed through a volt free contact for operation. Refer to BS 6644 for further information on
installing the electrical supply.
7. The integral pump in Fleet boilers is managed by the LMU boiler control.
NOTE: FOR BASIC TERMINATION DIAGRAM SEE FIGURE 4.6
HAMWORTHY HEATING LTD
- W
- A
- W
- A
BY A TIME-CLOCK CONTROL.
50
FLEET W series
BOILER MODEL
F50W
F40W
230V ~ 50Hz
160 160
0.85/0.35 0.85/0.35
F100W
F85W
230V ~ 50Hz
350 450
2.1/1 2.1/1
F70W
F60W
160 160
0.85/0.35 0.85/0.35
F150W
F125W
350 600
2.1/1 2.4/1.2
500001211/F