U.S. Boiler Company K2 Operating Instructions Manual page 17

i. Operation
F. Changing Adjustable Parameters (continued)
2. Adjusting Parameters (continued)
Asphyxiation Hazard. 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.
Modulation
"Press"
Setup
Factory
Range / Choices
Setting
See Table
See Table 4
4
Minimum to
100% Maximum
Heat Rate
Minimum to
80% Maximum
Heat Rate
Minimum to
100% Maximum
Heat Rate
Minimum to
40% Maximum
Heat Rate
30
0 to 60 Minutes
Minutes
Minimum
See Table
- 100 to
4
Maximum
See Table
See Table 4
4
105337-03 - 5/15
button to access the following parameters:
Boiler Type
Boiler Size Setup
To verify the boiler size selection, a qualified 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 "Confirm".
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 Control to a particular
boiler type.
Central Heat Maximum Expected Heat rate
This parameter defines 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 Expected Heat Rate (fan speed) setting to limit the
boiler output accordingly.
Domestic Hot Water (DHW) Max Expected Heat Rate
This parameter defines 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 Expected Heat Rate (fan speed) setting to limit the boiler
output accordingly.
auxiliary Maximum Expected Heat rate
This parameter defines the highest modulation rate the Control will go to during the auxiliary heat
call for heat. If the rated input of the Auxiliary Heat Zones is less than the maximum output of the
boiler, change the Auxiliary Heat Maximum Expected Heat Rate (fan speed) setting to limit the
boiler output accordingly.
Zone 1 Expected Heat Rate (typical for zone 1 through 16)
This parameter defines the highest modulation rate the Control will go to during the Zone 1 call for
heat. If the rated input of the installed home radiation in zone 1 is less than the maximum output
of the boiler, change the Zone 1 Expected Heat Rate (fan speed) setting to limit the boiler output
accordingly.
Zone release Time
After the Zone Release Time minutes and a zone has not been satisfied (thermostat opens) the
measured heat loss will be released to increase to the Central Heat Maximum Heat Rate.
Minimum Modulation
This parameter is the lowest modulation rate the Control will go to during any call for heat.
Lightoff rate
This is the blower speed during ignition and flame stabilization periods.
Warning
Parameter and Description
17