Alpha Alpha CB50 Boiler, Инструкции по установке и обслуживанию

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15 Alpha CB50 - Installation
5. When measuring the outer duct, measure from the end of the tube as shown in Figs. 14 and 15.
6. Cut both the inner and outer ducts to length.
Note: Do not cut the outer duct end with the two holes, these are for securing the terminal.
Ensure that all cuts are square and burr free.
7. Fit the flue terminal to the outer duct by inserting it into the end with two holes. Align the holes and secure with the two
screws provided.
8. Place the inner flue duct back into the outer duct. Use the inner duct supports to centralise the duct in the outer duct.
9. Fit the flue assembly as described in the previous section. Due to the size of the flue clamps the flue must be fitted from
inside the building.
10. It may be necessary to support the flue with suitable brackets (every metre) when flue lengths approaching the maximum
are used.
4.8 CONNECT THE MAINS SUPPLY - Fig. 15
1. Gain access to the boiler terminal block by releasing the
two fixing screws (one each side) securing the control
panel and lowering the panel. Refer to Technical Data,
section 2.9 for connection details.
2. Note: This boiler has been fitted with a mains supply
cable. However, if it is necessary to fit an alternative
supply cable, ensure the cable clamp that has been fitted
is removed and connect as follows:-
Remove the two screws securing the terminal block cover
from the back of the control box (see Fig. 15). Pass the
mains supply cable through the cable clamp and connect
as follows:- Brown to L, Blue to N and Green/Yellow to .
Ensure correct polarity.
Note: Ensure that the length of the earth wire is such
that if the supply cable is pulled out of its clamp the live
and neutral wires become taut before the earth wire.
The main terminal block can be removed by pulling it
off the pins to give easy access to the terminals.
Do not switch on the electrical supply at this stage.
3. If an external control, i.e. room thermostat or external clock is to be fitted, remove the terminal block cover and remove the
link between terminals 1 and 2. Pass the cable through the cable clamp and connect it to terminals 1 and 2. Replace the
terminal block cover. (Refer to section 2.9).
4. Replace the terminal block, ensuring it is located correctly on the plastic pins and replace the cover.
5. Ensure that there is sufficient free cable to allow the control panel to be raised and lowered then tighten the cable clamp screws.
6. Leave the control panel open until commissioning procedures have been completed.
7. Carry out electrical system checks - Short circuit, Polarity, Earth continuity and Resistance to earth with a suitable multimeter.
Fig. 14 - Side flue
Fig. 15