Bard I48H1, I60H1, I42H1D Heating Mode Operation, Ventilation Mode, Motor SPEED/CFM Configuration

HEATING MODE OPERATION

CompleteStat should never energize “YO” terminals in conjunction with “B”, so relay “R2” will never energize, and neither will Economizer Ventilation Speed.

“Y1” and “Y2” signals will pass through NC contacts of relay “R2” contacts, and all heating operations will be normal.

VENTILATION MODE

The call for ventilation will never be disrupted with this control circuit. Anytime “A” signal from CompleteStat is present, the “VENTILATION SPEED” of the vent package will be energized. “A” Signal from thermostat will also energize relay “R4” (“Blower Interlock Relay”) completing a circuit from “R” to “G” through the “NO” contacts to ensure blower operations on the ventilation call.

FIGURE 24

MOTOR SPEED/CFM CONFIGURATION

VENT OPTION INTAKE/EXHAUST SPEEDS

WIRE COLOR	SPEED	NOM. CFM
BLACK	HI	525
BLUE	MED-HI	450
ORANGE	MED-LO	375
RED	LO	300

TO CHANGE SPEEDS, MOVE BROWN

WIRE WITH WHITE TRACE.

7961-755-2

Move pink wire to corresponding motor

speed for required economizer operation CFM. Factory setting is High (525 CFM).

PINK

BROWN/WHITE

Move brown/white wire to corresponding motor speed for required ventilation CFM. Factory setting is Medium Lo (375 CFM).

HI	SPEEDS
MED. HI
	MOTOR
MED. LO

LO

7961-7554

BLACK

BLUE

ORANGE

RED

MIS-3271

Manual	2100-549G
Page	39 of 59