Sirius three FS 50kW

Output	Dry weight	Dimensions (WxDxH)	Flue connection size	ErP
50kW	60kg	600x681x848mm	80/125	A
70kW	70kg	600x681x848mm	80/125	A
90kW	104kg	600x681x1127mm	110/160 (100/150)	N/A
110kW	109kg	600x681x1127mm	110/160 (100/150)	N/A
130kW	126kg	600x681x1128mm	110/160 (100/150)	N/A
150kW	132kg	600x681x1128mm	110/160 (100/150)	N/A
200kW	212kg	600x1412x1238mm	150	N/A
250kW	232kg	600x1412x1238mm	150	N/A

Cascade
Up to 1MW	N/A

Outputs of 50kW, 70 kW, 90 kW, 110kW, 130kW, 150kW, 200kW and 250kW, making it suitable for a wide range of commercial applications
Wide 9:1 modulation ratio reducing constant on/off cycling to improve efficiency and boiler longevity
A gross seasonal efficiency of up to 97.5% reduces energy consumption
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
Programmable to work with solar thermal, biomass and buffer tanks, for a sustainable, energy efficient solution across the complete range
Suitable for LPG conversion; LPG conversion kits are available for off-grid applications
Lightweight stainless steel heat exchanger for reliable and energy efficient heat transfer
Integrated Low Loss Headers and Plate Heat Exchangers (available as options) are easier to install and offer a professional finish and reduced footprint
A very compact design, with casters on the bottom of larger output boilers. Boilers will pass through 700mm doors and are easier to position when space is at a premium
1" flow and return connections (50-70kW) avoids major pipework modification
An integrated Cascade function allows up to 16 boilers to be managed by the Siemens controller
0-10 volt connection provides a quick and simple interface with BMS
Weather compensation functionality reduces operation costs
A low NOx of under 24.6mg/kW minimises impact on the environment
ErP compliant, reducing carbon emissions and improving efficiencies in support of government targets
Certified for the ETL*, part of the Enhanced Capital Allowance (ECA) tax scheme for businesses
Five year parts and labour warranty** for complete peace of mind

*Most outputs. ** Terms and conditions apply. Click here for details.

Specification
Model			50	70	90	110	130	150	200	250
Performance	Fuel Type
Output @ 80 / 60^oC	NG	kW	45.1	65.1	85.1	102	121	140	184	238
Output @ 50 / 30^oC	NG	kW	48.6	70.3	92.2	110.2	130	150	200	250
Input (Gross) Maximum	NG	kW	51.4	74.3	97	116.4	137.4	158.6	212	266.4
Output @ 80 / 60^oC	LPG	kW	45.1	65.1	85.1	102	121	140	184	238
Output @ 50 / 30^oC	LPG	kW	48.6	70.3	92.2	110.2	130	150	200	250
Input (LPG) Maximum	LPG	kW	51.4	74.3	97.5	116.4	137.4	158.6	212	266.4
Efficiency	Value (%)
Efficiency @ 80/60^oC 100% Load	% Gross		87.8	87.6	87.7	87.6	88.4	88.4	87.7	87.4
Efficiency @ 30% Load	% Gross		97.1	96.8	96.9	96.8	97.8	97.8	98.3	98.3
Current Building Reg Part L2 Seasonal Efficiency	% Gross		97.1	96.9	97.0	96.9	97.3	97.3	97.5	97.5
ErP efficiency rating			A	A	N/A	N/A	N/A	N/A	N/A	N/A
Gas
Gas Consumption	NG	m³/h	4.9	7.07	9.25	11.1	13.1	15.1	20.2	25.4
Gas Consumption	LPG	Kg/h	3.59	5.19	6.79	8.15	9.8	11.3	14.8	18.6
Inlet Gas Pressure	NG-G20	m/bar	20				17-25
Inlet Gas Pressure	LPG-G31	m/bar	37				27-45
Gas Connection Size		inch	0.75"	0.75"	1"	1"	1"	1"	1.5"	1.5"
Gas Connection Type			Male Thread
Flue
Flue Gas Volume @ 80/60^oC (NG)	m³/h@STP		67.6	97.7	127.6	147.2	181	208	331	422
Flue Gas Volume @ 50/30^oC (NG)	m³/h@STP		62.8	90.5	117.7	136.2	166	191	303	386
Flue Gas Volume @ 80/60^oC (LPG)	m³/h@STP		61.5	88.9	114.1	139.3	207	240	320	400
Flue Gas Volume @ 50/30^oC (LPG)	m³/h@STP		57.1	82.4	105.2	128.9	190	219	292	367
Max Flue Gas Pressure @ Outlet (B23)	pa		200				170	280	230	280
Hydraulic
Water Flow Rate @ 15^oC ΔT	l/s		0.72	1.04	1.36	1.63	2.08	2.71	3.19	3.99
Water Flow Rate @ 20^oC ΔT	l/s		0.54	0.78	1.02	1.22	1.56	1.80	2.39	2.99
Hydraulic Resistance @ 15^oC ΔT	kPa		94	52	40	40	69	70	67	65
Hydraulic Resistance @ 20^oC ΔT	kPa		54	32	22	22	41	41	41	41
Water Content	Litres		3	5	9	10	10	11	13	15
Flow & Return Connection Size	inch		1"	1"	1.5"	1.5"	1.5"	1.5"	2	2
Flow & Return Connection Type			Male Thread
Flue Connection Size	mm		80/125	80/125	110/160 (100/150)	110/160 (100/150)	110/160 (100/150)	110/160 (100/150)	150	150
Max Boiler Operating Pressure	bar		4				6
Min Boiler Operating Pressure	bar		1				1
Maximum Flow Temperature	^oC		85
General
Appliance Dry Weight	Kg		60	70	104	109	126	132	212	232
Dimension W x D x H	mm		600 x681 x848	600 x681 x848	600 x681 x1127	600 x681 x1127	600 x681 x1128	600 x681 x1128	600 x1412 x1166	600 x1412 x1166
NOx Level (Dry @ 0% O2)	mg/kWh		27	31	36	22	17	23	37	39
CO2 Content - Natural Gas	%		8.5 - 9	8.5 - 9	8.5 - 9	9 - 9.2	9.2 - 9.4	9.2 - 9.4	9.2 - 9.4	8.8 - 9
CO2 Content - LPG	%		9.5 - 10	9.5 - 10	9.9 - 10	9.5 - 10	10 - 10.2	10 - 10.2	10.2 - 10.4	10.2 - 10.4
High Level Ventilation* (BS 6644)	cm2		93	134	175	210	275	317	424	534
Low Level Ventilation* (BS 6644)	cm2		185	268	350	418	550	634	848	1068
Electrical
Power consumption (with pump)	W		100	117	146	185	187	283	242	369
Nominal supply voltage	V / Hz		230 v 1 Ph 50 Hz

View product specification

When clicked this will open the product specification in PDF format.

Dimensions

Sirius three FS		50	70	90	110	130	150	200	250
A	Width	600	600	600	600	600	600	600	600
B	Height	848	848	1127	1127	1128	1128	1166	1166
C	Depth	681	681	681	681	681	681	1412	1412

Clearances

Sirius three FS		50	70	90	110	130*	150*	200*	250*
1	Front	1000	1000	1000	1000	1000	1000	1000	1000
2	L Hand	500	500	500	500	500	500	500	500
3	Top	250	250	250	250	400	400	400	400
4	Back	320	320	500	500	500	500	500	500
5	R Hand	500	500	500	500	500	500	500	500

*Back clearance increases to 800 when installed with a low-loss header kit, plate heat exchange kit, or cascade kit

Learn more about the Sirius FS by downloading our product literature.

Find out more about the Sirius three FS 50kW - 250kW by reading the case studies below.

Download your Building Information Modeling (BIM) file(s) for this product.

Download CAD files for this product using the links below. To access CAD files you will need the correct software installed to allow you to open .dwg files such as AutoCAD

Interested in this product for your premises? Speak to your Technical Sales Manager about this or any of our products.

Can't find the product label or fiche you require below? Try our online calculation tool which allows you to create and download one for a completed system or package installation.