Supplied By www.heating spares.co Tel. 0161 620 6677
11
NOTE
It will be necessary to hold the valve with one
spanner whilst tightening with another.
4.6.1
GAS (see fig. 12)
The appliance is supplied with a 1/2 inch BSP
service valve, connect the supply pipe to the inlet
of the valve and tighten the connecting nut.
NOTE
It will be necessary to calculate the diameter of
the gas supply pipe to ensure the appliance has
an adequate supply of gas.
4.6.2
FLOW & RETURN (see fig. 12)
The appliance is supplied with 22mm service valves
for the flow and return connections, connect a 22mm
pipe to the inlet of each valve and tighten both nuts.
4.6.3
SAFETY VALVE (see fig. 12)
Connect a suitable coupling and 15mm pipe to
the safety valve outlet and tighten.The discharge
pipe must have a continuous fall away from the
appliance to outside and allow any water to drain
away thereby eliminating the possibility of freezing.
The discharge pipe must terminate in a position
where any water - possibly boiling - discharges
safely without causing damage or injury, but is
still visible.
4.7
CONDENSATE OUTLET (see fig. 12)
During normal operation the boiler produces
condensate which is collected in a trap located in
the lower part of the boiler. A flexible pipe
(condensate outlet pipe) is connected to the
outlet of the trap. The flexible pipe must be
connected to a plastic waste pipe only. The
plastic waste pipe must have a minimum of a 3
°
fall towards the drain. Any external run of pipe
should be insulated to prevent the risk of freezing.
CONNECTING THE CONDENSATE OUTLET
Gently pull the condensate outlet pipe down from
its location inside the boiler until approximately
250mm protrudes from the underside of the boiler.
Connect a suitable pipe (no less than 20mm
diameter) to the outlet pipe and ensure it
discharges in accordance with building regulations
or other rules in force.
Fig. 12
4.8
ELECTRICAL CONNECTIONS
The electrical supply must be as specified in 3.7.
A qualified electrician should connect the electri-
cal supply to the appliance. If controls - external
to the appliance - are required, a competent
person must undertake the design of any external
electrical circuits, please refer to section 8 for
detailed instructions.
ANY EXTERNAL CONTROL OR WIRING MUST
BE SERVED FROM THE SAME ISOLATOR AS
THAT OF THE APPLIANCE.
The supply cable from the isolator to the appliance
must be 3-core flexible sized 0,75mm to BS 6500.
Wiring to the appliance must be rated for opera-
tion in contact with surfaces up to 90
°
C.
4.8.1
CASING REMOVAL
To gain access to the appliance electrical con-
nections you must first remove the casing, pro-
ceed as follows:
●
locate and remove the 2 screws that secure the
controls fascia to the appliance casing (see fig. 13).
●
locate and remove the 2 screws that secure the
casing to the back frame of the boiler (see fig. 13).
●
gently pull one side of the casing then the other
to disengage it from the retaining clips.
●
lift the casing upward to disengage it from the
top locating hooks and then remove.
●
store the casing and screws safely until required.
Re-fit in the reverse order.
4.8.2
APPLIANCE TERMINAL STRIP
The appliance terminal strip is located behind the
control fascia (see fig.14). Locate and remove the
4 screws securing the terminal strip cover.
NOTE
The appliance comes with a factory fitted link to
allow basic operation of the boiler via the keypad.
If it is anticipated that external controls will be
required please refer to the wiring diagrams in
section 8 for more detailed information.
Fig.13
Fig.14
Safety valve
outlet
Condensate
outlet pipe
Return
Flow
Gas
Cable entries
Electrical input
board cover
Appliance
terminal strip
Screws
Screw
Screw
