

We at Jaspi are heating equipment manufacturers and suppliers.
Our products are installed by renewable heating installers, subcontractors and our customer's own plumbers.
All our products are delivered with bespoke installation drawings which will take onto account the already existing or planned equipment, their integration with the boiler / thermal tank and your individual requirements.
A full technical back-up is available to all our customers throughout the installation and commissioning, free of charge.
Our downloads section has a large number of technical documents and drawings which can also assist in system design and installation.
Jaspi boilers are designed for an easy installation.
All the connections are easily accessible - the coils, electric elements and fire bricks are all factory installed.
As the required installation components vary between the boilers, below is a table showing all the installation parts relevant to the individual boiler. Click here for the table.

Multifuel boilers
A typical multifuel boiler installation takes between 2-3 days and has, in addition to the boiler, the following components;
1) TSK boiler cooling valve.
2) Central heating circulation pump & timer or room thermostat for the same.
3) A pressure relief valve.
4) Expansion vessel, sized 10% of the total heating system water volume (boiler + pipework + radiators).
5) Thermostatic mixing valve for the domestic hot water.
6) Flue or a chimney. A class 1 Stainless Steel flue costs between £600-£900,- / 5 metres including the fittings.
7) Electrical and oil/gas supply for the boiler & burner.
8) Optional - A heating flow temperature controller, fitted onto the boiler's heating mixing valve (valve included with the boiler).
9) Optional thermal storage tank, which is sized according to the boiler's power output, other connected heat sources and the available space.
Wood Boilers
Wood boilers require an external thermal storage tank and generally need more components than the multifuel boilers.
Normally a wood boiler and thermal tank installation takes between 3-6 days and has, in addition to the boiler, the following components;
1) A thermal storage tank, which is sized according to the boiler's power output, other connected heat sources and the available space.
2) Central heating circulation pump & timer or room thermostat for the same. The pump is connected between the thermal tank mixing valve and the heating circuit.
3) A pressure relief valve.
4) Expansion vessel, sized 10% of the total heating system water volume (boiler + thermal store + pipework + radiators).
5) Thermostatic mixing valve for the domestic hot water.
6) Flue or a chimney. A class 1 Stainless Steel flue costs between £600-£900,- / 5 metres including the fittings.
7) Power supply for the boiler (Econature only).
8) A heating flow temperature controller and the mixing valve, fitted between the heating and the thermal storage tank.
9) A Termovar heat loading unit, fitted between the boiler and the thermal storage tank.
10) A control thermostat for the heat loading unit, usually a flue gas or a pipe thermostat. The Econature boiler has the thermostat built-in.
11) TSK boiler cooling valve (excluding Econature).
As all the individual installations vary, your installation may need more components than listed above, we or your installer can advice further.

JASPI boilers typical installation
components
| Product | Type | TSK Cooling valve required | Power supply excl. immersion | Back-up immersion heater power |
Recommended expansion vessel / L |
Thermal store required |
Integrated hot water coil |
Integrated Solar coil |
Automix heating flow temperature controller |
Heating mixing valve |
Pressure relief valve |
| DUO 1 | Multifuel | yes | 230VAC / 5 Amp |
2, 4 or 6kW selectable |
18 | No |
Yes 20kW@80° |
Optional | Optional | Included | 1.5 -2.5 bar |
| DUO 2 | Multifuel | yes | 230VAC / 5 Amp | 2, 4 or 6kW selectable |
24 | No |
Yes 25kW@80° |
Optional | Optional | Included | 1.5 -2.5 bar |
| TRIPLEX 1000 | Multifuel | yes | 230VAC / 5 Amp |
2, 4 or 6kW selectable |
24 | No |
Yes 25kW@80° |
Optional | Included | 1.5 -2.5 bar | |
| TRIPLEX 2000 | Multifuel | yes | 230VAC / 5 Amp | 2, 4 or 6kW selectable |
24 | No |
Yes 25kW@80° |
Optional | Included | 1.5 -2.5 bar | |
| TRIPLEX 3000 | Multifuel | yes | 230VAC / 5 Amp | 2, 4 or 6kW selectable |
24 | No |
Yes 25kW@80° |
Optional | Included | 1.5 -2.5 bar | |
| BIOTRIPLEX | Multifuel | yes | 230VAC / 10 Amp |
2, 4 or 6kW selectable |
24 | No |
Yes 25kW@80° |
Optional | Included | 1.5 -2.5 bar | |
| YPV40 | Wood | yes | N/A | N/A | 10 |
Yes 1500-3000L |
No | No |
Recommended (Thermal tank) |
Recommended (Thermal tank) |
1.5 -2.5 bar |
| ECOWOOD 25 | Wood | yes | N/A | N/A | 8 |
Yes 700-2000L |
No | No |
Recommended (Thermal tank) |
Recommended (Thermal tank) |
1.5 -2.5 bar |
| ECONATURE | Wood | No | 230VAC / 10 Amp | N/A | 18 |
Yes 1800-3000L |
No | No |
Recommended (Thermal tank) |
Recommended (Thermal tank) |
1.5 -2.5 bar |
|
Recommended minimum flue / chimney height for all our boilers is 5 metres, ø150mm / 6" or larger. |
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Thermal tank is often a part of a larger heating system installation and therefore it is more difficult to estimate the time and components needed.
One of the most important factors when choosing the thermal store, is to make sure that it has enough connections to accommodate all the heat sources and the central heating + domestic hot water outputs.
If the tank does not have the above, the installer will need to 'couple' some of the connections and more than often this leads to problems which are very hard to rectify afterwards.
All our thermal storage tanks come with bespoke installation drawings which will take onto account your specific system design.
Thermal store & central heating
It is normal that the thermal store temperature varies, especially when the heating uses logs or solar.
The principle of the thermal store is that the accumulated heat should be kept in the store until it is needed.
To connect the central heating, via a circulation pump, directly to the thermal store and pump the water around the heating circuit at the tank temperature, takes 100% of the heat out of the tank, only to return it back slightly colder.
This can result in overheating of the heating system and will dramatically reduce the heating systems efficiency
To preserve the energy in the thermal store, eliminate the constant flow in and out of the store and to keep the central heating at a set temperature, we strongly recommend a Termomix valve and controller to be installed between the tank and the CH circulation pump.
A principle of the system is below, red is the thermal store. Click the image to zoom in.
The valve and controller will eliminate unnecessary flow from the tank and will only take the amount of heat that is needed.
Thermal store & Domestic Hot water
Normally the domestic hot water is taken from the thermal tank, if no tank is installed, then directly from the boiler.
The hot water is made by the indirect coil(s) inside the tank or there can also be a secondary smaller cylinder inside the larger tank.
The coils or internal cylinders are mains pressured and can connect directly to the incoming cold mains.
Below is a list of the standard fittings for a thermal store;
1) Indirect coils for the domestic hot water, solar or an open-vented wood boiler.
2) Pressure relief valve 1.5 -2.5 bar.
3) Thermostatic mixing valve for the hot water.
4) Expansion vessel and a filling loop, which are shared with all the other components in the heating system including boiler(s) and radiators.
5) Automatic air vent (on top of the tank).
6) Heating mixing valve + controller.
7) Central heating circulation pump + timer / room stat.
7) Drain valve.
8) Optional - Electric back-up immersion heaters.
10) Fittings, plugs and isolation valves to connect to the pipework.
More information and pictures can be found from our generic drawings downloads.
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