VOKERA Linea Manual de servicio descargar pdf (Pagina 17)

5.1 GAS SUPPLY INSTALLATION

Inspect the entire installation including the gas meter, test for

tightness and purge. Refer to BS 6891 for specific instruction

5.2 THE HEATING SYSTEM

The appliance contains components that may become damaged or

rendered inoperable by oils and/or debris that are residual from the

installation of the system, consequently it is essential that the system

be flushed in accordance with the following instructions.

5.3 INITIAL FILLING OF THE SYSTEM

Ensure both flow and return service valves are open, remove

appliance casing as described in 4.7.1, identify the automatic air

release valves (AAV) and loosen the dust cap/s by turning the cap

anti-clockwise one full turn.

IMPORTANT, THERE ARE NO MANUAL AIR RELEASE VALVES

LOCATED ON THE APPLIANCE. Ensure all manual air release

valves located on the heating system are closed.

Connect the filling loop as shown in fig. 3, slowly proceed to fill the

system by firstly opening the inlet valve connected to the flow valve,

and then turning the lever on the combined stopcock and check

valve, to the filling position (see fig. 18). As water enters the system

the pressure gauge will begin to rise. Once the gauge has reached

1 BAR close both valves and begin venting all manual air release

valves, starting at the lowest first. It may be necessary to go back and

top-up the pressure until the entire system has been filled. Inspect

the system for water tightness, rectifying any leaks.

5.4 INITIAL FLUSHING OF THE SYSTEM

The whole of the heating system must be flushed both cold and hot

as detailed in 5.8. Open all radiator or heating valves and the

appliance flow & return service valve. Drain the boiler and system

from the lowest points. Open the drain valve full bore to remove any

installation debris from the boiler prior to lighting. Refill the boiler

and heating system as described in 5.3.

5.5 FILLING THE HOT WATER SYSTEM

Close all hot water outlets, turn appliance stopcock to the normal

operating position (fig. 18), slowly open each outlet until air has

been expelled and clear water is discharged.

Check pipe-work etc. for water tightness.

5.6 PRE-OPERATION CHECKS

Before attempting the initial lighting of the appliance, the following

checks must be carried out:

- ensure all gas service valves from the meter to the appliance are

open and the supply pipe has been properly purged;

- ensure the proper electrical checks have been carried out, (see

7.8) particularly continuity, polarity, and resistance to earth;

- ensure the 3 AMP fuse – supplied with the appliance – has been

fitted;

- ensure the system has been filled, vented, and the pressure set

to 1 BAR;

- ensure the flue system has been fitted properly and in accordance

with the instructions;

- ensure all appliance service valves are open.

5.7 INITIAL LIGHTING

Ensure the electrical supply to the appliance is switched on. Press

the ON/OFF switch to switch the appliance ON (indicated by active

display), ensure any external controls are switched to an ‘ON’

position and are calling for heat.

After being powered, the boiler begins an automatic vent cycle

lasting approximately 2 minutes. The display indicates “sf” and the

“function selection indicators” light up in sequence. Press the

MODE button to interrupt the automatic vent cycle.

Press the heating button, the appliance will now operate in the

Winter

mode as described in 1.2. Should the appliance fail to ignite,

refer to 5.6 and/or section 7 (mode of operation, parameter setting,

& faultfinding).

5.7.1 CHECKING GAS PRESSURE AND COMBUSTION

ANALYSIS

The appliance is factory set and requires no additional adjustment

once installed.However to satisfy the requirements of GSIUR 26/9

(I.S. 813 ROI), it will be necessary togas rate the appliance using

the gas meter that serves the appliance.If the installation does not

include a gas meter (for example LPG) and there are nomeans by

which to calculate the gas rate, then a combustion analysis test

must becarried out in accordance with BS 7967 (UK) to ensure the

appliance is left workingsafely and correctly.Additionally, if the gas

valve has been adjusted, replaced, or the appliance has

beenconverted for use with another gas type, then it becomes

necessary to carry out acombustion analysis/check to ensure that

correct combustion is occurring.If there are no means to gas rate

the appliance and/or carry out a combustion analysischeck, then it

will not be possible to complete the commissioning procedure.

Details on how to carry out the combustion analysis can be found

in section 7.

IMPORTANT

It’s imperative that a sufficient dynamic – gas – pressure is

maintained at all times.Should the dynamic gas pressure fall below

an acceptable level, the appliance maymalfunction or sustain

damage

5.8 FINAL FLUSHING OF THE HEATING SYSTEM

The system shall be flushed in accordance with BS 7593. Should

a cleanser be used, it must be suitable for Copper and Aluminium

heat exchangers. It shall be from a reputable manufacturer and

shall be administered in strict accordance with the manufacturers’

instructions and the DWTA code of practice.

NOTE

Chemicals used to cleanse the system and/or inhibit corrosion

must be pH neutral, i.e. they should ensure that the level of the pH

in the system water remains neutral.

Premature failure of certain components can occur if the level of

pH in the system water is out-with normal levels.

5.8.1 INHIBITORS

See Section 3 “General Requirements”.

5.9 SETTING THE BOILER OPERATING TEMPERATURE

The flow outlet temperature can be adjusted between 39 °C - 80 °C

via the “Heating temperature adjustment button” (see fig.2).

5.9.1 SETTING THE DOMESTIC HOT WATER TEMPERATURE

The DHW outlet temperature can be adjusted between 35 °C - 60

°C via the “DHW temperature adjustment button” (see fig. 2).

5.9.2 INFORMATION MODE

By pressing the

key, the InFO word appears on display. By turning

the selector A, the display shows, one by one, the information

described below.

Info list (fig. 19)

Info 1 displays the external temperature recorded by the probe,

only if an external probe is connected

Info 2 displays the system pressure, accompanied by the filling

symbol

normal operating

position

filling position

closed

position

Fig. 18

SECTION 5 - COMMISSIONING

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 43 44

Comentarios a estos manuales

Sin comentarios

VOKERA Linea Manual de servicio Pagina 17

Comentarios a estos manuales

Relacionado con productos y manuales para Calentadores De Agua Y Calderas VOKERA Linea