Dru G31 Propane, Instructions For Installation Manual

Page: 6 / 24

6
English
t r i o
-
i n s t r u c t i o n f o r i n s ta l l at i o n
!Caution
- Make sure that the right insertion length is maintained;
- Place the wall duct with the groove/folded seam at the top;
- Make sure the horizontal concentric pipe pieces are sloping towards the wall duct, in order to prevent rain water
from entering.
➠
Mount the rosette (mounting inner plate); if necessary, on a heat resistant intermediate plate when passing through
combustible material;
➠
Attach the wall duct from the outside with four screws in their respective holes.
6.5.3 Application with roof duct
6.5.3.1 Construction of concentric system with roof duct
The concentric system with roof duct has to comply with the following conditions:
- The construction of the chosen system has to be allowed. (See the procedure described below);
- First, a concentric pipe of at least 1 meter should be connected vertically to the appliance.
Depending on the construction, the appliance is set by means of the baffle and/or the air inlet guide.
In the following procedure you can see how the allowability of a concentric system can be determined and which
settings are needed.
➠
Determine the following data:
1) The number of bends required (no distinction is made between 45° and 90° bends);
2) The total number of meters of horizontal pipe length;
3) The total number of meters of vertical and/or sloping pipe length.
These data will help you determine whether the concentric system is allowed by using Table 1
In Table 2 you can read which setting is required for the appliance.
Follow the procedure described below:
➠
In the first 2 columns of Table 1, search the number of bends required and the total horizontal pipe length:
➠
In the 3rd column of Table 1/Table 3, search the total vertical and/or sloping pipe length.
If you end up in a box with the letter A, B, C, D or E, the concentric system chosen by you is allowed.
➠
Use Table 2 to determine which conditions apply for the baffle and/or the air inlet guide (for placing/setting see section 6.7).
Examples
To clarify, we will give 2 examples to determine the acceptability of a concentric system and the conditions for setting
the appliance. In Table 1 the route to be followed is indicated by arrows. The result is outlined in red.
Example 1
1) 3 bends
2) 3 metres horizontal
3) 5 metres vertical/sloping
→ Construction of this concentric system is allowed.
→
Situation A applies to the adjustment of the appliance.
Example 2
1) 4 bends
2) 3 metres horizontal
3) 11 metres vertical/sloping
→
Construction of this concentric system is not allowed.
uk