Technical data

ManualsBrandsVOKERA ManualsHeating SystemPinnacle

● Press the

mode

button until “INFO” appears

in the display.

● Press the

button until the appropriate step

number is shown in the left side of the display.

● The measured value of each step is shown on

the right side of the display.

● Press the

mode

button until “Stby” appears

in the display to return to the stand-by mode.

5.12 SETTING THE SYSTEM DESIGN PRESSURE

The design pressure should be a minimum of 1

bar and a maximum of 1,5 bar.

The actual reading should ideally be 1 bar plus

the equivalent height in metres (0,1 bar = 1

metre) to the highest point in the system above

the base of the appliance (up to the maximum

of 1,5 bar total).

N.B. The safety valve is set to lift at 3 bar/30

metres/45 psig.

To lower the system pressure to the required

value, pull lever on head of safety valve to release

water until the required figure registers on the

pressure gauge (fig. 1).

5.13 REGULATING THE CENTRAL HEATING

SYSTEM

Fully open all radiator and circuit valves and run

the appliance for both heating and hot water until

heated water is circulating. If conditions are warm

remove any thermostatic heads. Adjust radiator

return valves and any branch circuit return valves

until the individual return temperatures are correct

and are approximately equal.

5.14 CHECKING DYNAMIC GAS PRESSURE

Isolate the appliance from the electrical supply

and remove the appliance casing as described in

section 4.10. Unclip and remove the front air

chamber cover.

Attach a suitable manometer to the inlet test

nipple of the gas valve.

Restore the electrical supply to the boiler and

generate a request for central heating via the

room thermostat and/or timer.

Press the

mode

and

buttons at the same

time, the boiler will now run at full power for 15

minutes.

The dynamic gas pressure will now be shown on

the manometer, and should be 20 mbar +/- 1 mbar.

If the dynamic gas pressure is out-with the

tolerance range, you should contact the gas

supplier for advice.

Press the

and

buttons at the same

time to return to the normal operating mode.

Isolate the appliance from the electrical supply,

remove the manometer from the inlet test nipple,

tighten the test nipple screw, and check for

soundness.

Refit the air chamber cover and appliance casing

in the reverse order.

5.15 FINAL CHECKS

● ENSURE ALL TEST NIPPLES ON THE

APPLIANCE GAS VALVE ARE TIGHT AND

HAVE BEEN CHECKED FOR SOUNDNESS.

● ENSURE THE APPLIANCE FLUE SYSTEM IS

FITTED CORRECTLY AND IS PROPERLY

SECURED.

● ENSURE ALL PIPE WORK IS RE-CHECKED

FOR SOUNDNESS.

● RE-FIT APPLIANCE CASING.

● COMPLETE APPLIANCE LOGBOOK.

Complete details of the boiler, controls, installation

and commissioning in the logbook supplied with

the boiler. This is an important document, which

must be correctly completed and handed to the

user. Failure to install and commission the

appliance to the manufacturers instructions may

invalidate the warranty.

5.16 INSTRUCTING THE USER

Hand over all documentation supplied with this

appliance – including these instructions – and

explain the importance of keeping them in a safe

place.

Explain to the user how to isolate the appliance

from the gas, water and electricity supplies, and

the locations of all drain points.

Show the user how to operate the appliance and

its associated controls correctly.

Show the user the location of the filling valve and

how to top-up the system pressure correctly and

show the location of all manual air release points.

Explain to the user how to turn off the appliance

for both long and short periods and advise on the

necessary precautions to prevent frost damage.

Step number Information displayed

Temperature at flow sensor

Temperature at return sensor

Unused

Required temperature (as set at parameter 4)

Temperature rise of flow sensor (measured in °C per

second)

Temperature rise of return sensor (measured in °C

per second)

Unused