92
X. Operation G. Changing Adjustable Parameters (continued)
WARNING
Boiler type is factory set and must match the boiler model. Only change the boiler type setting if you are
installing a new or replacement Control. The boiler type setting determines minimum and maximum blower
speeds. Incorrect boiler type can cause hazardous burner conditions and improper operation that may result
in PROPERTY LOSS, PHYSICAL INJURY OR DEATH.
2. Adjusting Parameters (continued)
“Press”
button to access the following parameters:
Factory
Setting
Range /
Choices
Parameter and Description
See Table
30
See Table 30
Boiler Type
Boiler Size Setup
To verify the boiler size selection, a qualied technician should do the following:
1. Check boiler’s label for actual boiler size.
2. Set “Boiler Type” to match actual boiler size.
3. Select “Conrm”.
The Boiler Type parameter changes the minimum and maximum modulation settings. This
parameter is intended to allow a user to set the parameters in a spare part Sage2.1 Controller to a
particular boiler type.
See Table
30
Minimum to
Maximum
Modulation
Central Heat Maximum Modulation
This parameter denes the highest modulation rate the Control will go to during a central heat call
for heat. If the rated input of the installed home radiation is less than the maximum output of the
boiler, change the Central Heat Maximum Modulation (fan speed) setting to limit the boiler output
accordingly.
See Table
30
Minimum to
Maximum
Modulation
Domestic Hot Water (DHW) Max Modulation
This parameter denes the highest modulation rate the Control will go to during a Domestic Hot
Water call for heat. If the rated input of the indirect water heater is less than the maximum output
of the boiler, change the DHW Maximum Modulation (fan speed) setting to limit the boiler output
accordingly.
See Table
30
Minimum
- 100 to
Maximum
Minimum Modulation
This parameter is the lowest modulation rate the Control will go to during any call for heat.
See Table
30
2500 - Maximum
Light-off Rate
Lightoff Rate
This is the blower speed during ignition and ame stabilization periods.
Spare Part:
Sage2.1 Controller - P/N 104471-01
Maximum Light-off Rate
= 4000
Sage2.1 Controller - P/N 104471-04
Maximum Light-off Rate
= 4000
Altitude 0 -7000 ft. 0 - 5000 ft.
Boiler Type
399
-07
500
-07
800N
-05
800P
-05
Maximum Modulation Rate 7600 5900 5200 5150
Minimum Modulation Rate 2100 1400 1200 1200
Absolute Maximum Modulation Rate 8500 6550 5900 5600
Table 30: Parameters Changed Using the Boiler Type Parameter Selections:
NOTE: Maximum Modulation Rates are designed for 100% nameplate rate at 0°F combustion air. Contact factory before
attempting to increase the Maximum Modulation Rate.
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