Lochinvar INS7162, MP2, INS7141 Type of terminal unit. This improves the control of the air

type of terminal unit. This improves the control of the air	ROOM
temperature in the building.
BOILER INDOOR DESIGN TEMPERATURE	The room is the desired room temperature for the building
	and provides a parallel shift of the heating curve. The room
	temperature desired by the occupants is often different from
The indoor design temperature is the room temperature that	the design indoor temperature. If the room temperature is
was used in the original heat loss calculations for the build-	not correct, adjusting the ROOM setting increases or
ing. This setting establishes the beginning of the character-	decreases the amount of heat available to the building. A
ized heating curve, see Figure 15 below.	ROOM setting is available for both the occupied (day) and
	unoccupied (night) periods.

BOIL DSGN

BOIL IND

TERMINAL UNITS

The control provides for a selection between six different terminal unit types: two types of radiant floor heat, fancoil, fin-tube convector, radiator and baseboard. When a termi- nal unit is selected, the control automatically loads the design supply temperature, maximum supply temperature, and minimum supply temperature (FIG. 16). The factory defaults are listed in Figure 16. These factory defaults can be changed to better match the installed system. If a facto- ry default has been changed, refer to section A to reload the factory defaults.

FIG. 15

OUTDOOR DESIGN TEMPERATURE

The outdoor design temperature is the outdoor air tempera- ture that is the typical coldest temperature of the year where the building is located. This temperature is used when doing the heat loss calculations for the building. If a cold outdoor design temperature is selected, the boiler supply tempera- ture rises gradually as the outdoor temperature drops. If a warm outdoor design temperature is selected, the boiler supply temperature rises rapidly as the outdoor temperature drops.

BOILER DESIGN TEMPERATURE

The design supply temperature is the supply water temper- ature required to heat the building when the outdoor air tem- perature is as cold as the outdoor design temperature.

WARM WEATHER SHUTDOWN

When the outdoor air temperature rises above the WWSD setting, the control turns on the WWSD pointer in the dis- play. When the control is in Warm Weather Shut Down, the boiler demand pointer is displayed if there is a boiler demand. However, the control does not operate the heating system to satisfy this demand. The control does respond to a DHW or set point demand and operates as described in sections E & F.

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