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5.6.3 Product programmer unit operation
5.6.3.1 General description
The appliance features a control set (AVS37.294) embedded within the case. This is used to
set the requirements for the room temperature, central heating flow temperature
programmed on and off times for central heating and hot water.
incorporates controls designed to enhance the efficient use of both the engine and the
system.
There are three options to the room thermostat and also an outside temperature sensor;
1) Room Unit QAA55.110 – This is the basic room thermostat and is limited in function.
Diagram 5.6.1 Dimensions of room unit QAA55.110
2) Room Unit QAA75 – This is a hard wired fully functional controller and will carry out the
same functions as the controller on the front of the appliance.
3) Room Unit QAA78 – This is the wireless option which carries out the same function as unit
QAA75.
To enable the wireless unit to be received by the KD NAVIEN, the appliance
requires a radio module AVS71 connected to the appliance (see diagram 5.6.4)
Navien stirling engine m-CHP installation manual
Diagram 5.6.2 Dimensions of room unit QAA75
The programmer also
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