Heatrae Sadia Multipoint 30 Installation And User Instructions Manual page 10

FIGURE 04: SCHEMATIC DISCHARGE PIPE ARRANGEMENT
Safety device
(e.g. Temperature
relief valve)
500mm maximum
3.4: ELECTRICAL REQUIREMENTS
WARNING: This appliance must be earthed. It is suitable for a.c. supply
only. Disconnect the electrical supply before removing the terminal
cover. Installation must be in accordance with the current I.E.E. Wiring
Regulations.
3.4.1 The unit is supplied fitted with a 1.0m 3 core 1.5mm
cable. The electicity supply should be fused 13 Amp for a 3kW model
and 5 Amp for a 1kW model and be via a double pole isolating switch
with a contact separation of at least 3mm in both poles. Refer to the
schematic wiring diagram below.
3.4.2 The wires are colour coded as follows:
Green and Yellow
Brown
Blue
10
Metal discharge pipe (D1) from
Temperature relief valve to tundish
300mm
minimum
Discharge pipe (D2) from tundish,
with continuous fall. See Building
Regulation G3 section 3.9d i-iv,
Table 4 and worked example
EARTH
LIVE
NEUTRAL
Tundish
(L)
(N)
Discharge below
(Building Regulation
G3 section 3.9d gives
alternative points
of discharge)
Fixed grating
Trapped
gully
flexible
2