External Controls; Arc Welding Precautions; Ancillary Equipment - Lochinvar LBF81 Installation, Commissioning & Maintenance Instructions

12.2

EXTERNAL CONTROLS

To achieve time control over the water heater, the main power supply to the appliance should be interrupted.
It is essential that the Correx non-sacrificial anode protection system has an independent power supply if
time control is required.
The water heater can give a 240 VAC output to indicate flame failure and burner on conditions. The LBF151 –
LBF401 can also give a high temperature limit indication.
The outputs can be found on the power supply PCB and are marked as follows:

SV = Burner on

TS = High temperature limit (Where applicable)

SB = Flame failure
Relays to convert these outputs into volt-free contacts are available as ancillary options; the part number for the
relay is RLY2716 and one relay will be required for each option.
12.3

ARC WELDING PRECAUTIONS

The appliance must be isolated from the mains electricity supply in the event of electric arc welding being carried
out on any connecting pipework.
12.4

ANCILLARY EQUIPMENT

Any allied circulating pump should have a separate power source with suitably sized overload protection.
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