60
PHTM II
Combi Installation, Operating & Service Instructions
110331-07 - 8/23
16
Operation
(continued)
Table 16-12: Menu
FR
FR
, Firing Rate (visible only after password entered)
Default
Range/
Choices
Parameter and Description
Off
On/Off
F01
F01
Manual Modulation Enable
Setting to "On" allows technician to fire at rate specified in
F02
. To return to Auto change
setting to "Off". Note: Boiler will remain in Manual modulation for 15 minutes after last
F02
adjustment. After 15 minutes boiler automatically returns to Auto modulation.
On
Manual
Off
Auto
100%
0-100%
F02
F02
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.
136 combi:
80%*
136 combi (B)
88%*
200 combi:
75%
136 combi:
0-80%*
136 combi (B)
0-88%*
200 combi:
0-75%
F03
F03
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.
136 combi:
80%*
136 combi (B)
88%*
200 combi:
75%
136 combi:
0-80%*
136 combi (B)
0-88%*
200 combi:
0-75%
F04
F04
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%
F05
F05
DHW Max Modulation
Defines highest modulation rate during a DHW demand.
0%
0 - 30%
F06
F06
Minimum Modulation Capacity
Increases lowest modulation rate during any call for heat.
0%
136 combi:
-9% to +8%
136 combi (B)
-9% +8%
200 combi:
-9% to +3%
F07
F07
Gas Valve Ignition Capacity
Increases or decreases gas valve position during burner ignition. For example, increasing
this value causes gas valve to be more open (more fuel) during ignition.
0%
136 combi:
-16% to +14%
136 combi (B)
-16% +14%
200 combi:
-8% to +14%
F08
F08
Blower Ignition Capacity
Increases or decreases blower speed during burner ignition. For example, increasing this
value causes the blower speed to be higher (more air) during ignition.
* Central Heat 1 Max Modulation (
F03
) and Central Heat 2 Max Modulation
F04
) default and range increased to 100% for 136
combi above 2,000 ft. (305 m) to help recover de-rate associated with altitude.
