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6.6 ELECTRICAL CONNECTIONS
Checks to ensure electrical safety should be carried out by a qualified person
ALWAYS carry out the preliminary electrical system checks, i.e. earth continuity,
polarity, resistance to earth and short circuit using a suitable test meter.
6.7 FLUE GAS ANALYSIS
If the boiler is on a metered gas supply carry out a gas rate test at the gas meter. The
boiler needs to be in s
ervice mode which is achieved by turning the CH knob on the
front panel fully clockwise and the service LED will now be on. Turn the knob counter
clockwise and then fully clockwise again and the service LED will flash. The boiler is
now set in “high-rate” service mode. Turn on the hot water tap and carry out a gas rate
test at the gas meter. The gas consumption should be as below within a toleranc
e of
5%. If the reading is outside of this range then, with the use of a flue gas analyser,
refer to gas valve adjustment in chapter 7.
Gas Consumption
24CPM
30CPM
Unit
Natural Gas (max load)
2.38
2.92
m³/hour
Natural Gas (min load)
0.71
0.88
m³/hour
Propane (max load)
1.77
2.17
kg/hour
Propane (min load)
0.64
0.77
kg/hour
If no meter is available or the boiler is on bottled gas then, with the use of a flue
gas analyser, refer to gas valve adjustment in the chapter 7.
6.8 INITIAL OPERATION
Domestic hot water
To turn on the boiler follow the user instructions at the front of this manual.
Whenever a hot tap is opened the boiler automatically fires up to deliver hot water. The
temperature selector control should be se
t at maximum. If the ambient water
temperature is high (as in a hot climate) then the hot water temperature may be reduced
by using this knob.
Central heating
Set the timer/thermostat/programmer so that the boiler will fire in CH mode. Refer to
chapter 1 User Instructions to operate the CH circuit.
The central heating temperature control knob allows water temperature of between 30
and 80°C to be
selected. The boiler will remain on until:
The temperature selected on the thermostat/programmer is reached
The temperature selected on the boiler CH control knob is reached
The timer switches the boiler off.
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