Worcester 47 311 43, Инструкция по установке и обслуживанию

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If the appliance is being passed over to the user immediately,
refer to Section 13 - Instructions to the User and set the controls
to the users requirements.
If the appliance is to be left inoperative, check that the Operating
Switch is set to OFF. Turn off the gas service cock and switch
off the electricity supply.
If there is any possibility of the appliance and system being left
inoperative for long periods during frosty conditions, drain the
appliance and system. For short inoperative periods, leave the
appliance under the control of the built in frost thermostat or the
remote frost thermostat (if fitted) or leave operating continuously
with the room thermostat set at 6° C.
11.6 CENTRAL HEATING ADJUSTMENT
The boilers are pre-set for the type of gas
Check that the gas type indicated on the type plate matches
that supplied by the gas company. If there is a difference, consult
the Technical Telephone Services about conversion of the
appliance.
The nominal useful output is set by using either the burner
pressure method or the volumetric method.
Advice: the burner pressure method of installation is quicker
and thus advisable under normal circumstances. If however the
appliance is supplied by mains gas, and the adjustment is
undertaken in a peak consumption period, the volumetric method
should be used due to the pressure variations.
LPG (Propane) : LPG (Propane) boilers are pre-set at the
connection pressure indicated on the type plate.
G767_160
Fig. 25
1. Burner pressure test point
2. Gas pressure adjustment screw
3. CH temperature adjustment knob
4. Inlet pressure test point
11.6.1 Burner Pressure Adjustment Method
1. Remove the wire and the sealing cover from the gas setting
screw.
2. Unscrew the throttle screw (no. 1, fig. 25) and connect the
pressure gauge.
3. Open the gas tap and switch on the appliance.
4. Set the temperature selector to position “7” (no. 3, fig. 25)
5. Gauge the burner pressure for the required power, taking
into consideration the model type (see Table 4). Adjust
burner pressure using the gas setting screw (no.2, fig. 25).
Turning clockwise lowers the pressure, reduces the gas flow
and consequently the power. Turning anti-clockwise
increases the pressure on the burner, raising the gas flow
and consequently the power.
6. Turn off the gas tap, disconnect the pressure gauge and
tighten the screw back.
7. Replace the sealing cover and the wire. Crimp the lead seal
with pliers.
Incoming pressure
8. Loosen the sealing screw (no. 4, fig. 25) and connect the
pressure gauge to the measuring point.
9. Open the gas tap and switch on the appliance. Set the
temperature selector to position “7” (no. 3, fig. 25).
10. The supply pressure for liquid gas appliances should be 37
mbar (propane appliances). If the supply pressure does not
fall within this range, then the cause must be found and the
problem rectified.
11. Close the gas tap, disconnect the pressure gauge and turn
the sealing screw tightly shut (no. 4, fig. 25).
12 Instructions To The User
12.1 Tell the user how to operate the appliance and hand over
the Users Instructions leaflet.
12.2 Tell the user what to do if the heating system is not to be
used in frosty weather.
12.3 Tell the user the sealed system set pressure.
12.4 Tell the user of the importance of regular servicing.
Worcester Heat Systems Ltd. offer a comprehensive
maintenance contract.
12.5 Set the system controls to the user’s requirements.
12.6 If an external programmer has been fitted which has a
programmable domestic hot water facility then it is suggested
that this be set to Continuous or the equivalent.