62.9699 Page 9
The connection bolts on the frame are marked as follows:
Earth conductor Potential equalization
POTENTIAL-FREE CONTACT (PK)
The potential-free contact on an appliance is independent of
the power optimization system (EO). It is required to display on
an external switchboard whether the appliance is switched on.
The terminals are marked 21 to 29.
CONNECTION TO A POTENTIAL EQUALISATION SYSTEM
The appliance is to be connected to a potential equalization
system with a minimum conductor cross-section of 10 mm²
(0.016 inch²). The connection terminal marked must be
used for this purpose (EN 60 335 1 + 2). The connection con-
sists of a bolt threaded M6 and is located on the frame of the
appliance.
Connection according to diagram.
When set up in block configuration, all appliances must be
interconnected as potential equalization.
.
6.2 GAS CONNECTION
Setting up a gas connection as well as the possible laying of
the gas supply line on the premises may only be carried out by
qualified personnel and in accordance with the relevant
national and local regulations.
A gas appliance may only be installed in an adequately venti-
lated location.
Appliances are set at the factory to suit the gas specified in the
order and the location. The type of gas, gas pressure, gas cat-
egory are entered on the specification plate. Prior to connec-
tion, check that the appliance is set up for the type of gas
available on site. Ensure that the data on the specification
plate matches the gas data available.
If this is not the case, the appliance must be converted or
adapted by the service personnel responsible to suit local con-
ditions. The following points should be noted:
• Has the appliance been tested for the new gas data?
• Conversion must be done according to the Service Manual.
• A new specification plate or at least a durable marking with
the new gas data must be affixed to the appliance.
The dimension of the gas pipe on site has to be G1" with the
inclusion of a stop valve. The gas connection on the appliance
is G 3/4". Necessary gas flow per appliance see §3.
Connection
The appliance is connected in accordance with the installation
drawing (§3.1). In order to connect the appliance to the gas
supply, the protecting cover (SA) under the right-hand console
must be removed as described in §5.2.2. As shown in the illus-
tration, the flexible metal hose (MS) hanging out of the console
at the bottom with the fixed section of pipe (FR), the gas valve
(GV) as well as the union fitting (VR) are connected to the 1"
gas supply pipe (G) protruding from the wall (WA) with the
inclusion of a stop valve. After the connection has been com-
pleted, the protecting cover must be refitted correctly.
A different gas valve to the one shown here is fitted to pan size
BOT-300G.
.
Sealing
The gas pipe fittings must be sealed with a suitable sealant.
The following sealants must be used for gas pipes:
• Loctite 572 white (liquid PTFE)
when sealing gas pipes, gas valve screw connections, jets.
• Loctite 620 green
when sealing high-strength connections, burner attach-
ment, burner pipes and elbows.
The installation of a dirt trap in the gas supply line by the owner
is recommended. After connection, all lines carrying gas must
be tested for leaks at operating pressure by painting with non-
corrosive foam-forming media, (e.g. soapy water or leak
spray).
WASTE GAS FLUE
Waste gas flues are not required for tilting appliances. The
waste gases exit the gas outlet located at the rear of the appli-
ance in an upward direction towards the extraction hood or
ventilated ceiling, where they are extracted by mechanical
means.
TESTING
Gas connection pressure
The connection pressure must be measured using a liquid U-
gauge (resolution at least 1 mm water column). Proceed as fol-
lows:
• Close the main on-site gas valve.
• In the case of floor-mounted appliances, remove the front
panel (F) and the lower cover of the base (V) on the inner
face of the right-hand console (§5.1.2); in the case of wall-
mounted appliances, remove the protective cover (SA)
under the right-hand console (§5.2.2).
• The connection point for pressure measurement is located
on the gas valve (GV) or on the pipe next to the valve on
BOT-300G and UET-150G appliances.
• Connecting the pressure gauge:
• Remove the screw (SE) on the inlet side of the gas valve.
Connect the gauge by pushing a piece of flexible tubing
onto the connection.
• Open the main gas valve.
• Turn on the appliance at full power.
• Check that the pressure complies with the permissible con-
nection pressure range stated.
• When pressure measurement has been completed, refit
the screw to the valve and seal it. The other components
are reassembled in the reverse order to that described
above.
1 Cable lug Ø 6 mm (0.24“)
2Nut M 6
3 Spring washer M 6
4 Washer M 6
Fig.9 Connection to the potential equalization system
WA Wall
G Gas supply pipe
VR union fitting
GV Gas valve
FR Fixed pipe
MS Flexible metal hose
SA protecting cover
Fig. 10 Gas connection