Triad Triumph series, Manual

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D. Field Adjustable Parameters
Table A.3 is a list of the parameters that can be adjusted in the field. Although it is physically possible to adjust
all of these parameters, the parameters that are shaded gray should not need to be adjusted in the field . In the
event that these parameters are changed by accident, they may be restored to their original factory values by referring
to Table A.5.
1) Adjusting the target boiler supply temperature when responding to call from an indirect water heater - The default
IWH target supply temperature is 180°F. Since most indirect water heaters have ratings based on 180°F boiler supply
temperature, it should rarely be necessary to adjust this parameter.
2) Changing the boiler water reset curve - When an outdoor temperature sensor is connected to a Triump Series
boiler, the MCBA will adjust the target boiler supply temperature based on outdoor temperature when the boiler is
responding to a call for central heat. Figure A.2 is a graph showing the target boiler supply temperature as a function
of outdoor temperature. The curve shown in Figure A.2 is that obtained with the factory set parameters. The shape of
this curve may be changed by changing Parameters 4, 5, 6, and 7 as shown in Figure A.2.
If the outdoor sensor is not connected to the boiler, the target supply temperature is always defined by Parameter 4
when the boiler is responding to a call for central heat, regardless of the outdoor temperature. In this case, the settings
of Parameters 5, 6, and 7 are meaningless.
3) Allowing the boiler to accept an input from an AM-4 module - In some applications (particularly multiple boiler
installations) it may be desirable to allow an external control to directly manage modulation of the boiler. The control
supplied with this boiler permits the TRIUMPH to be modulated using a 0-10VDC signal supplied by an external
control. In order for the boiler to accept the 0-10VDC signal, Parameter 34-2 must be changed from “0” (“Room
Thermostat”) to “2” (“0-10VCapacity”). Once this parameter is changed, the boiler will ignore any call from a ther -
mostat connected across terminals 1 and 2 on the boiler. It will continue to respond to calls from the indirect water
heater thermostat.
Figure A.2 Adjusting Boiler Water Reset curve
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