High Efficiency THERMAflow ELECTRIC COMBINATION  BOILERS - National Distribution

The THERMAflow Range                   

The Thermaflow range of Electric Combination boilers are designed to meet evolving needs and address issues raised by high energy prices and climate change. The 99% plus efficiency rating and its design to operate on peak avoidance tariffs allows for major savings on running costs and energy use. The range is suitable for sealed heating systems and underfloor heating with different outputs of units available. THERMAflow boilers provide an extremely fast response to both hot water and heating needs; Hot water at taps within approximately 5-10 seconds Radiators reach maximum temperature within 3 minutes The integration of expansion tanks allow the fast response and mains pressure hot water at high flow rates. This makes the unit ideal for power showers without the need for a booster pump.

In order to have an efficient central heating system the boiler need to be sized appropriately

 Find the right size boiler  (Click here ) 

Note : Please consult an installation engineer to get your requirements (i.e. heat loss calculation and hot water usage) prior to contacting us with orders / enquiries.Electrical supply requirements:-
- The 9 KW and 12 KW boilers meet the requirements of EN 610000-3.3
- The 9 KW and 12 KW boilers must be installed in premises having a service supply of ≥ 100A
per phase.
- The 12 KW boiler must be installed in premises having a system impedance of not more than 0.1939 + J 0.1939Ω

THERMAflow models - Technical Information / Downloads

model	TH 9 / 210U	TH 9 / 250U	TH9/330U	TH12 / 210U	TH12 / 250U	TH12 / 330U
Height (mm)	1640	1940	1970	1640	1940	1970
Width (mm)	590	590	650	590	590	650
Depth (mm)	740	740	790	740	740	790
Capacity (L)	210	250	330	210	250	330
Max system capacity (L) @ 10°C	310	360	470	310	360	470
Lift weight (kg)	60	65	75	60	65	75
Total weight (kg)	70	77	85	70	77	85
Weight when full (kg)	270	315	405	270	315	405
Output heating ¹	10 kW	11 kW	13 kW	13 kW	14 kW	16 kW
DHW flow rate @ 40°C t (L/min)	30	30	30	30	30	30
DHW available for use (L)	250	300	390	260	310	400
¹ Energy output available with store fully energised and power on to boiler
APPLICATION	Flat 1/2 Bed 1 Bath / 1 Shower	House 1/2 Bed 1 Bath / 1 Shower	House 2/3 Bed 1 Bath / 1 Shower	Flat 2/3 Bed 1 Bath / 1 Shower	House 2/3 Bed 1 Bath / 1 Shower	House 3/4 Bed 1 Bath / 1 Shower
Heat up 75° t (mins)	162.5	192.5	255	130	154	204
Re-heat 70% (mins)	113.75	134.75	178.5	91	108	143
Min water supply pressure (bar)	0.8 (80KPA)	0.8 (80KPA)	0.8 (80KPA)	0.8 (80KPA)	0.8 (80KPA)	0.8 (80KPA)
Max cold supply pressure	4 (400KPA)	4 (400KPA)	4 (400KPA)	4 (400KPA)	4 (400KPA)	4 (400KPA)
Max system pressure - Primary (bar)	3 (300KPA)	3 (300KPA)	3 (300KPA)	3 (300KPA)	3 (300KPA)	3 (300KPA)
Max heating system content (excluding store volume) - Primary (L)	110	130	150	110	130	150
Expansion vessel charge pressure Primary (bar)	1.5 (150KPA)	1.5 (150KPA)	1.5 (150KPA)	1.5 (150KPA)	1.5 (150KPA)	1.5 (150KPA)
Expansion vessel charge pressure - Secondary (bar)	3.5 (350KPA)	3.5 (350KPA)	3.5 (350KPA)	3.5 (350KPA)	3.5 (350KPA)	3.5 (350KPA)
Safety Valve - Preset (bar)	3 (300KPA)	3 (300KPA)	3 (300KPA)	3 (300KPA)	3 (300KPA)	3 (300KPA)
Connections	Compression	Compression	Compression	Compression	Compression	Compression
CH - Flow & Return (mm)	22	22	22	22	22	22
Domestic cold inlet (mm)	22	22	22	22	22	22
Domestic hot outlet (mm)	22	22	22	22	22	22
Safety release valve (mm)	15	15	15	15	15	15
ELECTRICAL SUPPLY OFF-PEAK
Boiler power rating (kw/h)	9kW/h	9kW/h	9kW/h	12kW/h	12kW/h	12kW/h
Rated voltage - Single Phase~ (V)	~240	~240	~240	~240	~240	~240
Rated current (A)	40	40	40	52	52	52
ELECTRICAL SUPPLY 24HR DOMESTIC
Total power consumption of controls (W)	190	190	190	190	190	190
Rated voltage - Single Phase~ (V)	~240	~240	~240	~240	~240	~240
Rated current (A)	3	3	3	3	3	3
ENERGY EFFICIENCY RATING - 99.4%

            << download below details in .pdf format

 Electrical supply requirements:-
- The 9 KW and 12 KW boilers meet the requirements of EN 610000-3.3
- The 9 KW and 12 KW boilers must be installed in premises having a service supply of ≥ 100A
per phase.
- The 12 KW boiler must be installed in premises having a system impedance of not more than 0.1939 + J 0.1939Ω

THERMAflow Installation

High Efficiency Electric Combination Boilers

Central Heating and hot water in a single environmentally friendly package.

Mains Pressure hot water unvented heating systems

Ease of electrical Installation.

Ease of plumbing installation.

Thermaflow Electric Combi Boiler - The Installer Benefits

• Minimum Installation time involved
• No flues, storage tanks, or separate hot water storage required
• Sealed heating system. Radiators can be positioned above the boiler without the need for additional header tanks.
• Low maintenance and easy to to maintain

THERMAflow Operation

High Efficiency Electric Combination Boilers

The Thermaflow Electric Combination Boiler is designed to operate on peak avoidance tariffs. Energy availability is controlled by signals transmitted over normal radio frequencies.

The boiler is hard wired to the teleswitch via a 2-pole isolator. It requires a 50amp or 63amp supply (depending on which model is fitted).

Typical Tariff: Scottish power Economy 2000 tariff for example provides 18hrs of electricity per day at 4.70p/Kw hr.
Interrupting the supply at times of maximum power station demand for 3x2 hour periods per day.
Approximate shut down periods are 8.00am until 10.00am, 4.30pm until 6.30pm and from 12.00am until 2.00am.

N.B. Contact your electricity supply company for accurate and up to date tariffs and their costs.

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Company registered in England and Wales Company number 6257836