Ferroli Optimax 25 C Instructions For Installation, Use And Maintenance Manual page 15

Optimax 25 C
Connection with concentric fl ue system
The unit can be connected to a concentric air/flue duct with a wall or rooftop outlet as shown on the
following drawings. Numerous accessories are available on request to meet the various installation
requirements. Please refer to our "flue manual" or the price list.
Standard 1KWMA53A
Flue kit
110
30
95
View from above
175
30
95
fig. 10a
Horizontal fl ue installation
1. Define the position for installing the unit.
2. If using standard flue (1KWMA53A) this must be installed level, for non-standard flue lenghts over
1mtr a fall of 3 mm per metre should be incorporated.
3. Make a hole of diameter 10 - 20 mm greater than the nominal diameter of the concentric pipe
used.
4. If necessary, cut the terminal length to size, ensuring that the external pipe protrudes from the wall
by between 10 and 60 mm (fig. 10a and 10b). Remove the cutting burrs.
5. Connect the flue to the boiler, positioning the seals correctly. Seal the flue into the wall with silicone
or sand + cement and cover with wall seals provided.
Flue seals should be lubricated with a silicone type grease to prevent damage (grease not sup-
plied)
Standard concentric fl ue installation
Rear Outlet
Side view
P
S 50* 125
* = between
10 e 60 mm
Install level
Drill the wall 10÷20 mm
more than the pipe diameter
Install level
110
S 50*
P
P = S + 160 mm
Side Outlet
Front view
L
30
95
215 185
D
View from above
30
95
215 185 D
L
fig. 10b L = S + D + 170 mm
50*
* = between
10 e 60 mm
Install level
S
Drill the wall 10÷20 mm
more than the
pipe diameter
Install level
S 50*
15