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15.0 ELECTRICAL INSTALLATION
Wiring external to the equipment must be installed in accordance with the I.E.E. Regulations and any local regulations that apply.
MODEL
NORMAL SUPPLY VOLTAGE
TTW410
TTW580
15.1.1
ELECTRICAL SUPPLY REQUIREMENTS
Warning: this appliance must be earthed
A suitably competent person MUST check wiring. Normal supply required is 230 volts AC, single phase, 50 Hz. An isolator
with a contact separation of at least 3mm in all poles should be sited close to the equipment and must only serve that
equipment. The double pole switch must be readily accessible under all conditions.
15.2
EXTERNAL CONTROLS
The TTW water heater control includes the following functions:
Cascade control for up to 6 TTW water heaters.
0-10 VDC analogue input from a BMS.
Pump control for the primary circulation pump.
Open-Therm communication for advanced temperature controllers.
The TTW water heater has connections for:
Remote fault indication from each burner
Remote "burner-on" indication from each burner.
Calorifier temperature sensor.
15.3
WIRING CONNECTIONS
15.3.1
ACCESSING WIRING CONNECTIONS
The connections are placed on top of the display panel. To access the wiring connections, the top-front control panel cover retaining screws
(located either side of the control panel) should be removed. The cover can then be lifted forward and away from the appliance. The top-rear
control panel cover can then be removed and the wiring terminals accessed.
230V AC/50 Hz
1 PH
EXTERNAL FUSE RATING
6.0 A
42
POWER CONSUMPTION
752 W
829 W
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