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PHTM II
Installation, Operating & Service Instructions
16 Operation (continued)
Table 16-11: Menu
AA, Quick Menu (continued)
Default
Range/
Choices
Parameter and Description
Off On/Off
A08A08 Calibrate (visible only after password entered):
Setting to "On" enables a manual calibration to be attempted at next boiler start. For
immediate calibration cycle CH demand normal periodic calibrations are not affected by
this setting.
On Manual calibration is requested
Off Manual calibration is not requested
29 13-46
A09A09 Gas Valve Offset (visible only after password entered):
Gas valve offset is set automatically during calibration. When replacing an old gas valve
with a new gas valve, it is possible boiler will not start unless this value is changed. For
this situation, set Gas Valve Offset to 30 to allow the boiler to start.
Off On/Off
A10A10 Factory Default (visible only after password entered):
Returns all parameters back to the original factory default.
Must be set after a repair control is installed.
On Set all parameter values to Factory Default value.
Off No action
Table 16-12: Menu
FrFr (visible only after password entered)
Default
Range/
Choices
Parameter and Description
Off On/Off
F01F01 Manual Modulation Enable
Setting to "On" allows technician to fire at rate specified in F02.
On Manual
Off Auto
100% 0-100%
F02F02 Manual Modulation
Firing rate used when F01 is set to "On". Note: Manual Modulation will not rise above a
specific priority's max modulation or go below minimum modulation. For example, when
set to 0%, boiler ramps to minimum modulation and when set to 100% with a CH priority,
boiler ramps to CH Max modulation.
80% 0-80%
F03F03 Central Heat 1 Max Modulation
Defines highest modulation rate during a CH1 demand, Heat T'stat input. If rated input of
installed home radiation is less than maximum output of boiler, change F03 setting to limit
boiler output accordingly.
80% 0-80%
F04F04 Central Heat 2 Max Modulation
Defines highest modulation rate during a CH2 demand, Aux T'stat input (when selected).
If rated input of installed home radiation is less than the maximum output of the boiler,
change F04 setting to limit boiler output accordingly.
100% 0 - 100%
F05F05 DHW Max Modulation
Defines highest modulation rate during a DHW demand.
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