gledhill GC2000/120/E-OV Design, Installation & Servicing Instructions page 19

Written approval has already been obtained for:
Hepworth - Hep O BiTite
2
John Guest - Speedfit
Yorkshire - Tectite
However, as similar assurances cannot be obtained for Polypipe fittings we cannot
recommend their use.
All the water connections, apart from make-up tank and cold feed, are located at
the bottom front of the appliance. The gas connection, electricity supply cable
entry, along with the make-up tank and cold feed connections, are located at the
top of the appliance (see Figure 17).
2.2 Central heating and domestic hot water
Using 22mm copper pipework connect the appliance to the central heating and
secondary DHW. Stop valves should be fitted as close to both appliance connections
as possible. Both CH and DHW appliance connections are clearly labelled.
2.3 Expansion relief valve (sealed system models)
The valve should be installed into a discharge pipe which permits the safe discharge
of steam and hot water such that no hazard to persons or damage to electrical
components is caused.
NOTE:- The valve incorporates plastic components which will be adversely affected
by heat. For this reason we recommend the use of compression fittings for joints
to the valve and adjacent to the valve.
2.4 Drain cock
A 1⁄2''drain cock supplied with the appliance should be fitted to the drain connection
on the appliance using an approved jointing compound.
2.5 Gas
Connection is made at the top rear of the casing. The union gas cock is supplied
as a loose item in the fitting kit. The male liner, with union nut, should be fitted to
the Rc 1⁄2'' gas inlet using an approved jointing compound. The gas cock can then
be fitted and the gas supply completed. The whole gas installation including the
meter should be inspected and tested for soundness and purged in accordance
with the recommendations of the current issue of BS 6891.
2.6 Condensate drain
• Connect the condensate trap to a suitable plastic drain pipe i.e. PVC, UPVC,
ABS or PP which must have a minimum internal diameter of 15mm inside
the building and 32mm internal diameter outside the building. Any external
pipework should be kept to a minimum length to minimise the risks of
freezing.
• The pipe should not have any upward pipe runs and must fall at least 2.5°
(1:20) throughout its length towards the discharge point.
• It must be safely terminated in a permanent drain. This may be an internal
soil stack or waste pipe,an external gulley hopper or soakaway and may require
the use of a trap or break.
Note that condensate will be slightly acidic providing that the instructions above are
followed no special provision is necessary normally. (Refer to figures 4 and 5).
The position chosen for the discharge must ensure no damage as a result of
condensate release. It should be protected from blockage by debris or frost. Any
local building control authority requirements must be complied with.
Supplied By www.heating spares.co Tel. 0161 620 6677
INSTALLATION & WIRING
Note that if a condensate neutraliser is fitted
it must be installed and maintained strictly in
accordance with the manufacturers instructions.
However, if the installation instructions for
the boiler and neutraliser are contradictory
seek advice from both manufacturers before
installation.
2.7 Access to the appliance
To gain access to all components refer to figures
4, 5, and 18.
First remove the front panel by unscrewing the
two retaining screws at the top front LH and RH
sides. Lift the panel slightly and swing it forward
from the top. Lift the panel to disengage it
from the bottom edge. Remove the top panel
by unscrewing the screws at the LH and RH
sides.
2.8 Feed and expansion cistern
The feed and expansion cistern support shall
be installed ensuring that the base is fully
supported and the working head (10m) of the
appliance is not exceeded.
The adequate access must be provided for
maintenance of the F & E cistern.
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