Sirius three WH

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Specification
Output	Dry weight	Dimensions (WxDxH)	Flue connection size	ErP
50kW	40kg	450x377x763mm	80/125	A
60kW	40kg	450x377x763mm	80/125	A
70kW	50kg	450x505x763mm	80/125	A
90kW	83kg	600x584x952mm	110/160	N/A
110kW	93kg	600x584x952mm	110/160	N/A
130kW	93kg	600x584x952mm	110/160	N/A
150kW	96kg	600x584x952mm	110/160	N/A

Cascade
Up to 700kW	n/a

Outputs of 50kW, 60kW, 70kW, 90kW, 110kW, 130kW and 150kW making it suitable for a wide range of commercial applications
Lightweight stainless steel heat exchanger for reliable and energy efficient heat transfer
Wide 9:1 modulation ratio reducing constant on/off cycling to improve efficiency and boiler longevity
A gross seasonal efficiency of up to 97.3% reduces energy consumption
A low NOx from 17mg/kW minimises impact on the environment
Supplied with the latest Siemens controls with state of the art PCB, offering improved control options
The QA75 Twist Knob Controller has a simple descriptive display and easy to use advanced programming functions
0-10 volt connection provides a quick and simple interface with BMS
An integrated Cascade function allows up to 16 boilers to be managed by the Siemens controller
Its very compact design offers both 130kW and 150kW outputs within the same footprint as 110kW
1" flow and return connections (50-70kW) avoids major pipework modification
Programmable to work with solar thermal, biomass and buffer tanks, for a sustainable, energy efficient solution across the complete range
Commissioning by Potterton Commercial engineers and service plans are available to ensure your boiler is working reliably and efficiently
Five year parts and labour warranty* for complete peace of mind

* Terms and conditions apply. Click here for details.

Specification
Model			50	60	70	90	110	130	150
Performance	Fuel Type
Output @ 80 / 60^oC	NG	kW	45.1	55.0	65.1	85.1	102.0	121.0	140.0
Output @ 50 / 30^oC	NG	kW	48.6	59.4	70.3	92.2	110.2	130.0	150.0
Input (Gross) Maximum	NG	kW	51.4	62.8	74.3	97.0	116.4	137.4	158.6
Output @ 80 / 60^oC	LPG	kW	45.1	55.0	65.1	85.1	102.0	121.0	140.0
Output @ 50 / 30^oC	LPG	kW	48.6	59.4	70.3	92.2	110.2	130.0	150.0
Input (Gross) Maximum	LPG	kW	51.4	62.8	74.3	97.0	116.4	137.4	158.6
Efficiency	Value (%)
Efficiency @ 80/60^oC 100% Load	% Gross		87.8	87.6	87.6	87.7	87.6	88.4	88.4
Efficiency @ 50 / 30^oC - 30% Load	% Gross		97.1	96.8	96.5	96.9	96.8	97.8	97.8
Current Building Reg Part L2 Seasonal Efficiency	% Gross		96.6	96.4	96.1	96.5	96.4	97.3	97.3
ErP efficiency rating			A	A	A	N/A	N/A	N/A	N/A
Gas
Gas Consumption	NG	m³/h	4.9	5.98	7.07	9.25	11.1	13.1	15.1
Gas Consumption	LPG	Kg/h	3.6	4.4	5.2	6.6	7.92	9.8	11.3
Inlet Gas Pressure	NG-G20	m/bar	17-25
Inlet Gas Pressure	LPG-G33	m/bar	27-45
Gas Connection Size		inch	0.75"	0.75"	0.75"	1"	1"	1"	1"
Gas Connection Type			Male Thread
Flue
Flue Gas Volume @ 80/60^oC (NG)	m³/h@STP		67.6	82.6	97.7	127.6	147.2	181	208
Flue Gas Volume @ 50/30^oC (NG)	m³/h@STP		62.8	76.5	90.5	117.7	136.2	166	191
Flue Gas Volume @ 80/60^oC (LPG)	m³/h@STP		61.5	75.2	88.9	114.1	139.3	168	184
Flue Gas Volume @ 50/30^oC (LPG)	m³/h@STP		57.1	69.6	82.4	105.2	128.9	153	170
Max Flue Gas Pressure @ Outlet	pa		270	270	270	200	200	180	270
Hydraulic
Water Flow Rate @ 15^oC ΔT	l/s		0.72	0.88	1.04	1.36	1.63	2.08	2.71
Water Flow Rate @ 20^oC ΔT	l/s		0.54	0.66	0.78	1.02	1.22	1.56	2.03
Hydraulic Resistance @ 15^oC ΔT	kPa		85	92	45	35	36	69	70
Hydraulic Resistance @ 20^oC ΔT	kPa		48	55	30	22	22	41	41
Water Content	Litres		4	5	6	9	10	10	11
Flow & Return Connection Size	inch		1"	1"	1"	1.5"	1.5"	1.5"	1.5"
Flow & Return Connection Type			Male Thread
Flue Connection Size	mm		80/125	80/125	80/125	110/160	110/160	110/160	110/160
Max Boiler Operating Pressure	bar		4					6
Min Boiler Operating Pressure	bar		1
Maximum Flow Temperature	^oC		85
General
Appliance Dry Weight	Kg		40	40	50	83	93	93	96
Dimension W x D x H	mm		450 x 377 x 763	450 x 377 x 763	450 x 505 x 763	600 x 584 x 952	600 x 584 x 952	600 x 584 x 952	600 x 584 x 952
NOx Level (Dry @ 0% O2)	mg/kWh		29	31	31	31	22	17	23
CO2 Content - Natural Gas	%		8.5 - 9	9	8.5 - 9	8.5 - 9	9 - 9.2	9.2	9.2
CO2 Content - LPG	%		9.5 - 10	9.4 - 10.1	9.5 - 10	9.9 - 10	9.5 - 10	10.2	10.2
High Level Ventilation* (BS 6644)	cm2		93	113	134	175	210	284	286
Low Level Ventilation* (BS 6644)	cm2		185	226	268	350	420	496	572
Electrical
Power consumption	W		80	95	95	130	165	187	283
Nominal supply voltage	V / Hz		230 v 1 Ph 50 Hz Δ

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Dimensions

Sirius three WH		50	60	70	90	110	130	150
A	Width	450	450	450	600	600	600	600
B	Height	763	763	763	952	952	952	952
C	Depth	377	377	505	584	584	584	584

Clearances

Sirius three WH		50	60	70	90	110	130	150
1	Bottom	500	500	500	500	500	500	500
2	L hand	20	20	20	20	20	20	20
3	Front	400	400	550	600	600	600	600
4	R Hand	20	20	20	20	20	20	20
5	Top	300	300	300	400	400	400	400

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