Reducing Safety Distances; Heater Connection To A Smoke Flue; Back Connection; Top Connection - Helo R20 Manuel D'installation Et D'utilisation

If the smoke flue has a non-insulated interconnecting pipe or a bended pipe above the heater, the safety distance is 400
mm on sides and 400 mm upwards as measured from the horizontal surface.
Safety distance to the water tank in heater models including one, is 150 mm from flammable materials (Table 1).

2.6.2. Reducing safety distances:

Helo protective walls and protective base are available. The chimney's isolated part must reach the protective wall. In that
case other protection is not needed (Figure 7).
If the floor in the front of the heater is flammable, the floor must be protected with a min 1 mm metal sheet (spark protection
sheet) at the distance of 400 mm to the front and 100 mm to the sides, as measured from the fire door.
If the heater is installed in a corner, with a brick wall or chimney breast behind the heater and on one of the sides, the
safety distance is 50-100 mm on the side and 50 mm at the back. If there's a brick wall or chimney breast on both sides
and at the back, a safety distance of 100 mm to both sides is recommended to allow sufficient air flow. At the back, the
previously mentioned 50 mm will suffice.
In a sauna, the chimney must be always be insulated 400 mm below the ceiling (Figure 6).
For chimneys, safety distances to flammable materials are product-specific. Check the manufacturer's instructions. If in
doubt, contact the local fire authorities.

2.7. Heater connection to a smoke flue

Helo heater can be connected to the smoke flue (brick chimney) from the back or from the top. For connection to a brick
chimney, pay attention to the safety distances and protection in section 2.6. and brick laying instructions for brick chimneys.

2.7.1. Back connection:

Make a hole in the brick chimney which is 2–3 cm bigger than the connecting pipe.
Remove the plate covering the round hole at the back of the heater cover by using a screwdriver or the end of a hack saw.
Install the plate to cover the hole for top connection instead. Place the included connection pipe to the smoke flue opening
at the back of the heater. Push the heater in place. Make sure that the connection pipe sits well in the opening at the
chimney. Seal the empty space between the connection pipe and the chimney by using flexible, fire-resistant material, such
as fire wool.
The connection is finished by using a Helo cover plate, available from a hardware store. Fix the cover plate to the chimney
by metal fixtures or fire-resistant putty (Figure 4).

2.7.2. Top connection:

Install the heater's own connection pipe to the upper flue opening on top of the heater, the shorter section into the heater.
Make a hole in the brick chimney which is 2–3 cm bigger than the connecting pipe.
Top connection is made by using a bended pipe, which can be turned to match the chimney. Bended pipes are available at
a hardware store. A bended pipe can be extended, when necessary. Install the heater's own connection pipe to the upper
flue opening, and install the bended pipe on top of the connection pipe. Use a saw to adjust the length of the bended pipe
and extension, if any. Make sure the pipe goes deep enough into the chimney (not too far, the chimney may be blocked).
Seal the empty space between the pipe and the brick chimney by using flexible, fire-resistant material, such as fire wool.
The connection is finished by using a Helo cover plate, available from a hardware store. Fix the cover plate to the chimney
by metal fixtures or fire-resistant putty (Figure 5).
2.8. Connection to a Helo ready-made flue
The heater can be connected from the top to a ready-made Helo flue.
Select the correct ready-made flue in accordance with the heater model, the height of the flue, the external conditions,
temperature class T 600 etc. For best performance, installing a damper is always recommended.
•
Install the heater's own connection pipe to the upper flue opening on top of the heater, the shorter section into the
heater.
•
On top of the connection pipe, install a non-insulated interconnecting pipe and an extension, if needed. Use a saw to
adjust the length of the interconnecting pipe and extension, if any.
•
Install the damper between the non-insulated and insulated part, or alternatively, into the first insulated chimney flue
module.
•
Continue using insulated modules on top of the damper. There should be at least 400 mm of insulated chimney flue
below the ceiling. Follow the installation and user instructions for ready-made flues (Figure 6).
Adhere to the above mentioned safety distances to flammable and non-flammable materials.
Helo Oy is not liable for suitability or performance of other manufacturers' ready-made flues used in connection with Helo
heaters. Helo Oy is not liable for the quality of other manufacturers' ready-made flues. The chimney flue must have
temperature class of T 600.
6