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6.2 Pre-lighting checks and dry run
The following is a list of appliance checks to be carried out.
6.2.1 Check 1
With the boiler gas inlet service cock closed and electricity supply switched off
I)
Ascertain from the gas supplier or the customer that the meter installation is operational.
II)
Ensure that the gas installation pipework up to and including the gas inlet service cock has been
tested for gas soundness in accordance with IM/5 or BS 6891 as appropriate.
III)
Ensure that the gas installation pipework to the gas inlet service cock has been purged in
accordance with IM/2 or BS 6891 as appropriate.
IV)
Check
that
all
electrical
supplies
are
isolated.
V)
Check electrical earth continuity between the boiler gas pipework and the mains supply.
VI)
Check the electrical components are of the correct voltage range, particularly low voltage
ancillary
controls.
VII)
Check the pump motor current and adjust the starter overload settings.
VIII) Fill
and
vent
the
water
system and check for leaks.
6.2.2 Check 2
With the boiler gas inlet service cock closed, electrical supply switched on but on/off switch
on boiler control panel switched on.
I) Check that the direction of rotation of the pump(s) is correct.
II) Check the correct operation of the water fl ow switch lamp on the control panel as the pumps
are
turned
on
and
off.
Components within the connection box
(Cover panel removed by removing the two screws at top of panel and lifting panel off the bottom
locating
pegs).
DOC2012/2000en
33
Fig. 19 Connection box
Terminal strip
Terminal strip
Secondary stat
K1 & K2
alarm relays
Full sequenc
controll box
High limit the
reset button
Содержание R2000 Series
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