Alpha Pro Tec Plus 115, Инструкции по установке и обслуживанию, Страница: 6 / 56

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* Maximum Flue Lengths (includes first bend onto boiler flue connection for horizontal installations)
* Max. flue length 80/125 concentric (room sealed) m
* Max. flue length 80 single pipe (B23 open flue) m
Flue system (optional) Concentric flue mm
Hole in wall required mm
Flue system (as supplied) Open flue mm
Hole in wall required mm
11
28
80/125
127
80
100
8
14
80/125
127
80
100
5
8.5
80/125
127
80
100
14.5
30
80/125
127
80
100
15 50 70 90
Open flue - Maximum horizontal or vertical flue with single 80 mm dia. according to Table above
90° bend is equivalent to 2.1 m of flue length
45° bend is equivalent to 1.3 m of flue length
Vertical terminal is equivalent to 2 m of flue length
Concentric flue -
Maximum horizontal flue or vertical flue according to Table above
90° bend is equivalent to 1.9 m of flue length
45° bend is equivalent to 1.4 m of flue length
Vertical terminal is equivalent to 2 m of flue length
Notes: 1. Ensure all flues slope downwards towards the boiler by a minimum of 25 to 30 mm per metre of flue.
2. It is recommended that horizontal and vertical flue assemblies should be supported approximately every 1.5 m with
access provided to the joints.
3. These dimensions only apply for flue parts supplied by Alpha.
Cascade flue options are also available, please contact Alpha for further details.
2.4 FLUE DATA
2.5 PUMP
Alpha Pro Tec Plus 50, 70, 90, 115 - Data
The boiler is equipped with a variable speed low power consumption pump.
During the DHW mode, the pump always runs at the maximum speed.
During the CH mode, two different functioning modes of the pump are available, AUTO and FIXED.
AUTO - The pump speed is controlled automatically in order to give a proportional pump head, the pump speed varies
based on the heat output supplied by the burner - the greater the heat output the higher the pump speed.
It is possible to adjust the pump speed range in the boiler parameter menu. Parameter A3 adjusts the maximum
speed between values 5 to 9 and parameter A4 the minimum between 5 and the maximum setting (A3).
FIXED -
If the parameters 'A3' and 'A4' are set to the same value, the pump runs at the constant speed level set.
Note: For correct operation of the boiler, do not set values lower than the minimum value indicated above (i.e. lower than 5).
Pump release - After a prolonged period of inactivity, the pump might stick, and it may be necessary to turn the motor shaft
using a screwdriver. Take great care during this operation to avoid damage to the motor.
By-pass Regulation (part. 24 Fig. 1-30) - The boiler leaves the factory with the by-pass open.
If necessary, the by-pass can be adjusted to the system requirements from minimum (by-pass closed) to maximum (by-pass
open). Adjust using a flat head screwdriver, turn clockwise to open the by-pass, and anticlockwise to close.
For larger systems an additional external pump can be fitted and controlled by the boiler using a relay switch. See Fig. 2.3.
Model Pro Tec Plus