3
Maximum Boiler Temperature
“Maximum Boiler Temperature” is used in the
outdoor reset design calculation, and also serves as
the maximum setting for the boiler.
BOILER ADJUSTMENTS
1) MAX BOILER
190°F
2) MIN BOILER
120°F
3) OUT DESIGN
-10°F
4) DIFF
6°F
5) WWSD
72°F
Minimum Boiler Temperature
Reduces the risk of condensing flue gases. It can run
with both condensing, and non-condensing boilers.
Setup as per boiler manufacturers recommendation.
BOILER ADJUSTMENTS
1) MAX BOILER
190°F
2) MIN BOILER
120°F
3) OUT DESIGN
-10°F
4) DIFF
6°F
5) WWSD
72°F
Outdoor Design Temperature
The “Outdoor Design Temperature” option should
be set to reflect your specific city or region. It factors
into the outdoor reset curve calculation.
BOILER ADJUSTMENTS
1) MAX BOILER
190°F
2) MIN BOILER
120°F
3) OUT DESIGN
-10°F
4) DIFF
6°F
5) WWSD
72°F
Differential
A differential of 10° is 5° above setpoint and 5°
below setpoint.
Range from 2°F to 60°F.
BOILER ADJUSTMENTS
1) MAX BOILER
190°F
2) MIN BOILER
120°F
3) OUT DESIGN
-10°F
4) DIFF
6°F
5) WWSD
72°F
Warm Weather Shutdown
“Warm Weather Shutdown” is the outdoor
temperature that must be reached for the control to
enter an energy-saving hibernation mode.
BOILER ADJUSTMENTS
1) MAX BOILER
190°F
2) MIN BOILER
120°F
3) OUT DESIGN
-10°F
4) DIFF
6°F
5) WWSD
72°F
Domestic Hot Water Priority
This option will allow the DHW demand to override
the heating system for a max of 60mins in order
to satisfy the DHW demand. Once the control
switches to DHW priority, the DHW target will be the
Maximum Boiler Temperature. If after the 60mins
there is still an unsatisfied heat demand, the ORC-
0100 will automatically switch the system pump
back on to accommodate the call for heat. Once
the control switches to heat mode, the heat target
will be calculated based on the actual outside
temperature.
BOILER ADJUSTMENTS
1) MAX BOILER
190°F
2) MIN BOILER
120°F
3) OUT DESIGN
-10°F
4) DIFF
10°F
5) WWSD
72°F
6) DHW PRTY
OFF
Refer to diagram #4 Outdoor Reset Curve
Refer to diagram #4 Outdoor Reset Curve
