17
10
MOUNTING THE APPLIANCE
WALL MOUNTING PLATE
RAIL LOCATION EDGE
CENTRAL HEATING SERVICE
CONNECTIONS
4.4
Refer to Figure 11.
a)
The boiler is supplied with 22mm copper tails for both upwards and
downwards (optional) flow and return pipe routing suitable for
compression or soldering connections.
USE EXTREME CARE IF SOLDERING THE JOINTS NEAR TO THE
APPLIANCE. IF BOILER IS LOCATED IN TIGHT SPACE IT IS
RECOMMENDED TO REMOVE THE PIPES FROM THE BOILER.
b)
Connect the central heating system pipes to the central heating flow
and return pipes on the boiler. If downwards routing is required:
The sealed ends must be removed before connecting to the heating
system pipes. The upwards pipes must be used for connecting to a
vent pipe (open system) or fitting to an automatic air vent (sealed
system). The remaining pipe must be solder sealed.
The flow and return sensors have to be removed from the upwards
pipes and reconnected to the downward pipes (Fig 47; flow is
nearest to the front).
c)
Commission the central heating system as described in section 5.1,
and then proceed to section 4.5.
11
SERVICE CONNECTIONS
GAS CONNECTION
4.5
Refer to Figure 11.
Connect the gas supply pipe to the gas service cock. It is recommended
that a minimum of 22 mm diameter OD copper pipe be used to within
1000 mm of the gas service cock.
CONDENSATE CONNECTION
4.6
Refer to Figure 12.
Connect either a Ø21.5mm or Ø22mm plastic push fit or adhesive
overflow pipe to the condensate outlet. It should be piped to drain,
preferably within the building, maintaining a continuous 2.5° fall away
from the appliance. Note; if an additional “U” trap is fitted between the
appliance and the discharge point, then a visible air break is necessary
between the appliance and trap, because a trap is already provided
within the appliance. Ø32mm pipe should be used for external pipe
work, or if the appliance is installed in a garage. If the drain is routed
externally to a drain or soak away, then the external length should be
kept as short as possible and not exceed 3000 mm. Protection from
freezing in cold weather conditions is also advisable. Ensure that the
condensate discharge system complies with any local regulations in
force.
In exceptional circumstances, such as when a boiler is installed in a
basement without drainage, it may be necessary to install a condensate
pump to carry condensate up to ground/drain level. Such products are
available from Grundfos Pumps Ltd on: 01525 850000 and Pump House
on: 0115 922 2211.
AIR/FLUE DUCT INSTALLATION
4.7
For correct flue installation please refer to the installation instructions
that are provided with the individual flue kit as described in sections
2.5 - 2.7.
a)
Measure the required flue length as shown in Figure 13. Refer to
section 2.5 to determine whether any extension kits are required.
Installations using only the standard ducts or standard ducts with
straight extensions are described in this section. Installation
instructions for all other flue systems are included in the various
flue kits.
12
CONDENSATE CONNECTIONS
CH FLOW
CH RETURN
CH FLOW (OPTIONAL)
CH RETURN (OPTIONAL)
MAINS GAS INLET
CONDENSATE OUTLET
CONDENSATE DRAIN
MUST BE
≥
Ø22
W
A
STE ST
A
C
K
2.5º
CONDENSATE
DRAIN
MUST BE
≥
Ø22
2.5º
EXTERNAL PIPE MUST BE
≥
Ø32mm
SINK WASTE
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