26
3.6
Electrical and Wiring Requirements
All range models within this manual are fitted with an internal controller
situated at the top of the Heat Battery. Two wiring options are available:
1.
+iLTHP option 1:
Samsung Low Temperature Heat Pump
2.
+iLTHP option 2:
Daikin Low Temperature Heat Pump
Regardless of the option chosen, the Heat Battery is charged by the Heat
Pump from top to bottom and discharges hot water draw-off from top to
bottom. When operating in a backup mode the heating element charges the
Heat Battery from bottom to top.
Additionally, the Heat Battery does NOT require a separate control circuit
electricity supply which is supplied internally by a main heating system
power supply.
3.6.1
General
External wiring to the Heat Batteries must be in accordance with current IET
(BS.7671) Wiring Regulations and any other applicable local regulations.
Local
Means for disconnection must be incorporated in the fixed wiring
in accordance with the wiring rules.
Note: The lid cover of the controller can be removed by using a flat head
screwdriver.
•
The Heat Batteries must be earthed correctly.
•
The point of connection to the mains should be readily accessible and
adjacent to the Heat Battery installation; a fused spur is required.
•
The product must have its own
dedicated 16A MCB protected
supply.
•
Connection must allow isolation of the electrical supply, such as a
double pole switch having a 3mm (1/8") contact separation in both
poles. The means of isolation must be accessible to the end user after
installation.
•
All models are designed with an integrated electric heater. Install in
accordance with the instructions provided (3.7 & 3.8).
•
All models are fitted with only one 2.8kW heating element at ~230V AC
and therefore recharging times increase with size of the Heat Battery
when using the heating backup mode.
•
The mains power cable to the Sunamp Controller should be a minimum
of 2.5mm
²,
3 core HO5 VV-F sheathed cable, to BS 6500. This cable
must be prepared according to Figure 10 (below), were the Green/
