5
Alpha InTec 40GS2 - Safety Symbols and Information
2.1 ELECTRICAL SUPPLY
ATTENTION:
The power supply cable must be connected to a 230 V ±10% / 50 Hz mains supply respecting L - N
polarity and earth connection;
, this must be connected to a fused 3 A double pole switch with class III overvoltage
category (contact separation of at least 3 mm in both poles) or a fused 3 A 3-pin plug and unswitched shuttered socket outlet
(both complying with BS 1363) in compliance with installation regulations.
The boiler is supplied with a 'Special X' type electrical connection with a PVC <HAR> H05VV-F 3 x 0.75 cable without a plug.
If the power cable is damaged or replaced, it must be replaced with a cable supplied by Alpha or authorized After-Sale
Technical Service. Replacement is recommended using a qualified company in order to prevent any risk.
The boiler must be earthed.
There must only be one common isolator, providing complete electrical isolation, for the boiler and any external controls.
Wiring external to the boiler must be in accordance with the current IEE Wiring Regulations (BS 7671).
Note:
If a room thermostat is fitted, it must be suitable for 230 V switching.
If the boiler is locked out and an error code is shown on the display, the
RESET
button can be pressed to try and clear the fault.
If the fault still occurs after pressing the
RESET
button, then contact an approved engineer or Alpha service support department.
2.2 DOMESTIC HOT WATER SYSTEM
The minimum flow rate needed for the flow switch and burner to operate is 2.5 litres/min.
The incoming mains water pressure should be between 0.2 bar (0.02 MPa) and 5 bar (0.5 MPa) to ensure
efficient operation. If the pressure is above 5 bar a pressure reducing valve must be fitted.
Following Part L Building Regulations, where the mains water hardness exceeds 200 parts per million, provision
should be made to treat the feed water to the hot water circuit of combination boilers to reduce the rate of accumulation
of limescale.
To ensure economic use, the pipe runs between the boiler and taps should be in 15 mm copper pipe and be as short as
possible. Where possible the pipework should be insulated to reduce heat loss.
All taps and mixing valves used with the hot water system must be suitable for operating at a mains pressure of up to 8 bar.
Showers -
A shower may be used with the boiler if required.
If a loose or flexible head type shower is used it may require the fitting of a double check valve, to comply with Water Bye Law 17.
Bidets -
No anti-syphonage arrangements are necessary, provided the outlets are shrouded and it is not possible to attach
a temporary hand held spray. A supply of direct mains fed hot and cold water is permitted provided the appliance is of the
over-rim flushing type.
If the mains supply is fitted with a water meter, check valve or loose jumper stop cock, then a DHW expansion device
MUST
be
fitted.
Before the mains water supply pipe is connected to the boiler, it should be thoroughly flushed out to avoid the danger of dirt
or foreign matter entering the boiler.
2.3 PHYSICAL DATA
Boiler flow and return connections
mm
Relief valve connection
mm
DHW inlet (cold) DHW outlet (hot) connections
mm
Gas connection diameter
mm
Boiler dimensions
Height
mm
Width mm
Depth mm
Clearances for servicing
Bottom
mm
Top (horizontal flue)
mm
Top (vertical flue)
mm
Sides mm
Front mm
Recommended hole size for flue pipe
mm
Boiler dry lift weight
kg
Boiler operating weight (full of water) approx.
kg
Max. total flue length
Horizontal
m
Max. total flue length
Vertical
m
Flue system diameter
mm
Factory fitted Filling loop
22
15
15
22
1000
440
360
150
235
150
5
450
110
60
68
8
10
60/100
Yes
InTec 40GS2
