IBC HC 20-125 User Manual

2-5
BOILER SYSTEMS AND OPERATION
HC SERIES BOILERS HC 13-50, HC 23-84, HC 29-106, HC 33-124, HC 20-125, HC 33-160
O. Space Heating Delay (min) 0 min Range 0 – 15 min: The Boiler will not respond to
a Space Heating call for X min.
o Space Heating Delay after
heating DHW
0 min Range 0 – 15 min: The boiler will not respond
to a call for heat after the tankless DHW call for
heat has ended for X min.
20 - ADVANCED INSTALLER MENU
3 Maximum Power available for
Space Heating
100% Parameter “c” value to 100%
3. Max Pump Speed (PWM)
Space Heating Only
100% For use only with a PWM style pump (Terminal
X4.5)
4 Max DHW power Model Dependent HC 23-84, HC 29-106, HC 33-124 and
HC 20-125 = 100
HC 33-160 = 75
C Burner Modulation (Ramp up)
with a Space Heating Demand
1 0 = OFF
1 = ON
2 = Open Therm control
c Min fan speed in Space Heating Model Dependent HC 13-50, HC 23-84, HC 29-106 and HC 33-124
= 28%
HC 20-125 = 19%
HC 33-160 = 22%
c. Min Pump Speed (PWM) Space Heating Only 40%
d Min Fan power during Tankless
DHW
Model Dependent Range – 20-50%
HC 23-84, HC 29-106 and HC 33-124 = 28%
HC 20-125 = 19%
HC 33-160 = 22%
E Minimum Space Heating
Temperature with an Open Therm
heating demand
104°F (40°C) 50°F – 140°F (10°C – 60°C)
Only for use with an Open Therm thermostat
E. Open Therm or RF Space Heating
Control
1 0 = Ignore a call for heat if the target temperature
is less than “E”
1 = Answer a call for heat with a temperature
equal to “E”
2 = Answer a call for heat with a temperature
equal to that set in the user menu “Boiler
Maximum Temperature”
F Fan RPM at Burner Start for
Space Heating
Model Dependent 50-100% of High Fire
HC 13-50 and HC 23-84 = 70
HC 29-106 = 60
HC 33-124 and HC 20-125 = 50
HC 33-160 = 40 (Range = 40-75)
F. Fan RPM at Burner Start for
Tankless DHW
Model Dependent 50-100% of High Fire
HC 23-84 = 70
HC 29-106 = 60
HC 33-124 and HC 20-125 = 50
HC 33-160 = 40 (Range = 40-75)
h Max Fan Speed Adjustment Model Dependent HC 13-50, HC 23-84, HC 29-106 and HC 33-124 =
50 Range 40-50
HC 20-125 and HC 33-160 = 70 Range 65-75
NOTE: The control displays codes that include upper and lower case letter and a combination with a period after the letter.
Example: C, c., c are all valid parameter codes. When adjusting settings, double check that you are in the correct parameter.

IBC HC 20-125 Specifications

General

Brand	IBC
Model	HC 20-125
Category	Boiler
Language	English