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Installation instructions, Site requirements, Flue and chimney requirements – Stovax 8455 User Manual

Page 10: Installation of the gas supply, Ventilation, Appliance location

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The flue must be installed in accordance with all local and

national regulation and the current rules in force.

1.FLUE AND CHIMNEY REQUIREMENTS

1.1 The chimney or flue system must comply with the rules in

force, and must be a minimum of 178mm (7") in diameter.

1.2 The minimum effective height of the flue or chimney must be

3 m (10ft).

1.3 The chimney or flue must be free from any obstruction. Any

damper plates should be removed or secured in the fully open

position, and no restrictor plates should be fitted.

1.4 The chimney should be swept immediately prior to the

installation of the appliance - unless it can be seen to be clean

and unobstructed throughout its entire length.

1.5 Ensure that there is a smooth taper transition from the

fireplace opening into the chimney or flue.

1.6 The flue pull should be checked prior to installation of the

appliance. Apply a smoke pellet to the flue or chimney

opening and ensure that the smoke is drawn into the opening.

If there is not a definite flow, pre-heat the chimney for a few

minutes and re-test the flow.

IF THERE IS STILL NO DEFINITE FLOW, THE CHIMNEY

MAY REQUIRE ATTENTION - SEEK EXPERT ADVICE.

2. INSTALLATION OF THE GAS SUPPLY

2.1 Before installation, ensure that the local distribution

conditions (identification of the type of gas and pressure) and

the adjustment of the appliance are compatible.

2.2 Ensure that the gas supply is capable of delivering the

required amount of gas, and is in accordance with the rules in

force.

2.3 Soft copper tubing and soft soldered joints can be used but

must not be closer than 50mm (2”) to the underside of the

firebox.

2.4 A means of isolating the gas supply to the appliance must be

provided independent of any appliance control.

2.5 All supply gas pipes must be purged of any debris that may

have entered, prior to connection to the appliance.

3. VENTILATION

It is important to ensure that any national ventilation

requirements are taken into account during the installation of

this appliance.

3.1 Ventilation requirements differ according to the model.

Minimum permanent effective free air requirements - if this is

the sole gas appliance in the room - are as follows:

Model No.

Description

Min. vent cm

2

8300UC, P8300UC

8305UC, P8305UC

8310UC, P8310UC

16” VFC Radiant

18” VFC Radiant

22” VFC Radiant

100 See note b.

8301UC, P8301UC RD VFC Radiant

NONE

8421UC, P8421UC

8463UC, P8463UC

RD VFC

Convector

NONE

See notes a & b

8420UC, P8420UC

8461UC, P8461UC

16” VFC

Convector

15

8425UC, P8425UC

8466UC, P8466UC

18” VFC

Convector

20

8430UC, P8430UC

8471UC, P8471UC

22” VFC

Convector

30

See note b

Note a:

Gas input is less than 7kW and flue products clearance under

70 m3/hr. Some countries call for 100cm2 ventilation. Check

local standards.
Note b:

It is essential to check for flue clearance (see Diagrams 17/18). If

spillage is detected, it may be necessary to provide additional

ventilation.

3.2 The above table is in addition to any openable window and

although the vent must be to outside air where possible, it can

also pass to an adjacent room if that room has a similar sized

vent to the outside.

AIR VENTS MUST NOT BE RESTRICTED.

4. APPLIANCE LOCATION

4.1 This appliance must stand on a non-combustible hearth that is

at least 12mm thick.

4.2 It must be fitted into a non-combustible opening.

4.3 These appliances must be hearth mounted into a fireplace

opening conforming to National Standards. The minimum

dimensions shall be as shown in Diagram 1A for VFC Radiant

fires or Diagram 1B for VFC Convector fires. (The shaded area

must be flat and square).

INSTALLATION INSTRUCTIONS

SITE REQUIREMENTS