Bard S**H*D, W**H*D, T**H*D Low Voltage Wiring Diagram, Unit, Stage Cool, Stage Heat

FIGURE 4

HEAT PUMP WITH OPTIONAL MFAD, CRV and ERV VENTILATION

PACKAGING WITH NON-PROGRAMMABLE THERMOSTAT WITH CO2 CONTROLLER

Low Voltage Wiring Diagram

Thermostat

#TH5220D1151 C G R Rc Y E AUX O/B Bard part #8403-058

1

"L" is constant 24V output when thermostat is in Em Heat mode

L	1 Stage Cool
	2 Stage Heat

1	2	3	4	5	6	Optional CO2 Controller
						Bard part #8403-067

24V Low Voltage		C	G	R Y1 Y
Terminal Block
	2			Red
				Orange
			Black

Black

1Factory Jumper Installed Connect orange wire to "G"

2only if optional CO2 controller is used.

E W2	B W1 W3 DH	O1 L	Unit
	1
CRV	Brown/White
ERV
Ventilation Packages
MFAD	Red
			MIS-2634 E

Manual	2100-516H
Page	8 of 19