Potterton Gas condensing boiler Installation, Operation And Maintenance Manual page 78

Programming
Reduced setp increase start
(800, 1100, 1400)
Red setp increase end
(801, 1101, 1401)
78
Fig. 16: Optimum start and stop control
on
Xon Start time set forward
Xoff Stop time set forward
ZSP Time switching program
TRw Room temperature setpoint
TRx Room temperature actual value
For a relatively small required heating output, the reduced room setpoint can be
raised for cold outside temperatures. The increase is dependent upon the outside
temperature. The lower the outside temperature is, the higher the reduced set-
point for the room temperature is raised. The start of the increase and the end
point can be set. Between these two points there is a linear increase of the "re-
duced setpoint" up to the "comfort setpoint".
Fig. 17: Reduced setpoint increase
TRwA1 Red setpoint increase start
TRwA2 Red setpoint increase end
TRK Comfort nominal value
TRR Room temperature reduced setpoint
TOc Outside temperature composite
Paramount three 30-115 kW
off
TOc
396532 05.11