7704679.01 (3-08/18)
14
5. CASCADE FLUES
This type of duct evacuates the products of combustion of more than one boiler in a cascade connection through a shared flue
collector. The manifold has an incorporated clapet valve and must be used only to connect the boilers to the flue duct. The
diameters available are: Ø160 mm and double diameter Ø160/250 mm. A range of accessories is available on request.
BOILER
MODEL
MAXIMUM NUMBER OF BOILERS
IN A CASCADE CONNECTION
PARAMETER 9524
Minimum power rpm
Ø 160 mm
Ø 160/250 mm
G20
G31
WH-130
2
4
1850
2000
WH-150
2
4
1850
2000
In this outlet typology, a flue no-return valve, Ø 110/110 mm, must be fitted to each boiler. Change the parameter 9524 as
shown in table following the procedure described in chapter 13.1.
The flue header size must be calculated by a qualified technician during the system design stage, as required by current
regulations.
6. BOILER PUMP
The boiler is supplied without the circulation pump. This component must be installed on the heating return to allow water to circulate
between the boiler and the low loss header and can be purchased off the shelf or supplied by
POTTERTON COMMERCIAL
as
an accessory (modulating pump).
•
In the first case
the pump is installed on the heating return union near the boiler. To size it correctly see the Flow/Pressure
drops chart in chap. "BOILER PUMP" (Size the pump in accordance to the ÐT of the system design.
•
In the second case
the pump is installed directly on the boiler removing the pipe on the internal circuit (first remove the
front casing). For hydraulic performance data, see the Flow/Head charts in chap. "BOILER PUMP".
The water in the system is circulated by the relative pumps, see chap. "BOILER PUMP". Check that the flow of the water circulating
in the boiler is not less than the value indicated in the following table.
Model
Minimum flow rate (l/h)
Operating flow rate (l/h) with POTTERTON
COMMERCIAL low loss header
WH-130
2250
5400
WH-150
3150
5600
Summary of Contents for Sirius Three WH-130
Page 1: ...May 2018 Sirius three WH 130 150 kW ...
Page 10: ...7704679 01 3 08 18 10 583 892 600 G 1 1 2 G 1 1 2 G 1 198 100 100 100 102 CR_0775 95 223 24 ...
Page 20: ...7704679 01 3 08 18 20 WEATHER COMPENSATION CURVE GRAPHS QAC34 ...
Page 35: ...35 7704679 01 3 08 18 29 DIAGRAMS AGU 2 550 CR_0349 CR_0349 AVS 75 bis ...
Page 36: ...7704679 01 3 08 18 36 CG_2482 SAFETY THERMOSTAT Tmax 50 C free contact ...
Page 37: ...37 7704679 01 3 08 18 MODIFIED PARAMETERS Nr VALUE NOTE ...
Page 38: ...7704679 01 3 08 18 38 ...
Page 39: ...39 7704679 01 3 08 18 ...