Heating Innovations Limited

 
Home Up solid fuel boiler only heat pump only link up operation

 

Solid Fuel - Running the system with only the solid fuel boiler working.

Heat leak radiator has circuit at all times -Sometimes gravity and sometimes pumped

Red = Flow. Blue = Return. Orange = Preheated Return. White = Not flowing.

Function 1.  

Gravity Circuit for the Solid Fuel Boiler when in Slumber Mode or power cut.

When the fire has been first lit, or it is in slumber mode, (in the case of the all night firing appliances), gravity circulates through the H5 Panel into the hot water cylinder and the heat leak radiator (when fitted).

 

Status.

Motorized Valve no 22H - Naturally closed isolating the heat pump from the circuit.
Motorized Valve no 8 - Naturally Open to the solid fuel boiler. (closed to the heat pump)
Motorized Valve no 9 -  Naturally Open.
Motorized Valve no 10/17 - Naturally Open to the hot water cylinder. (closed to the radiators)

 

 

Red = Flow. Blue = Return. Orange = Preheated Return. White = Not flowing.

Function 2.  

Pumped circuit for the solid fuel boiler when in hot water mode.

As the fire builds up heat, the flow temperature rises (detected by the pipe thermostat on the solid fuel flow) the motorized valve No.9 is closed to shut off the gravity circuit and the pump is switched on. 

 The above gravity circuit is now pumped through the H5 Panel into the hot water cylinder and the heat leak radiator (when fitted)

In hot water mode, motorized Valve no 10/17 is naturally open to the hot water cylinder. (closed to the radiators)

 

Status.

Motorized Valve no 22H---- Naturally closed isolating the heat pump from the circuit.
Motorized Valve no 8------Naturally open to the solid fuel boiler. (closed to the heat pump)
Motorized Valve no 9----- Motored closed to shut off the gravity circuit.
Motorized Valve no 10/17 Naturally open to the hot water cylinder. (closed to the radiators)

 

Red = Flow. Blue = Return. Orange = Preheated Return. White = Not flowing.

Function 3.  

Pumped circuit for the solid fuel boiler when in hot water and heating mode. 

As above in function 2, but in hot water and heating mode motorized Valve no 10/17 is motored to mid position the heat is diverted to both the hot water cylinder and the radiator/U.F.H. system.

 

Status.

Motorized Valve no 22H---- Naturally closed isolating the heat pump from the circuit.
Motorized Valve no 8------Naturally open to the solid fuel boiler. (closed to the heat pump)
Motorized Valve no 9----- Motored closed to shut off the gravity circuit.
Motorized Valve no 10/17 Motored to mid position. open to the hot water cylinder & radiators/U.F.H..

 

Red = Flow. Blue = Return. Orange = Preheated Return. White = Not flowing.

Function 4. 

Pumped circuit for the solid fuel boiler when in heating mode with hot water satisfied

When the hot water cylinder reaches optimum temperature (detected by the cylinder thermostat), motorized Valve no 10/17 is motored open to the radiators/U.F.H. and closed to the hot water cylinder.

 

Status.

Motorized Valve no 22H---- Naturally closed isolating the heat pump from the circuit.
Motorized Valve no 8------Naturally open to the solid fuel boiler. (closed to the heat pump)
Motorized Valve no 9----- Motored closed to shut off the gravity circuit.
Motorized Valve no 10/17 Motored open to the radiators/U.F.H. & closed to the hot water cylinder

 

Red = Flow. Blue = Return. Orange = Preheated Return. White = Not flowing.

Contact Heating Innovations

Technical Support and Sales

Telephone 01354 653854