Bard QH482, QH243, QH602, QH422, QH362, QH302 installation instructions Contents

CONTENTS

Getting Other Information and Publications
For more information, contact these publishers:	.......... 3
QTEC General Information
QTEC Model Nomenclature	4
Shipping Damage	8
Unit Removal From Skid	8
Handling Unit After Removal From Skid	9
General	9
Minimum Installation Height	9
Duct Work	11
Filters	11
Fresh Air Intake	12
Condensate Drain	12
Service Light	13
Installation Instructions
Mounting the Unit	14
Wiring — Main Power	15
Wiring — Low Voltage Wiring	15
Low Voltage Connections	16

Figures
Figure 1		Unit Dimensions		7
Figure 2		Air Seal on Bottom of Unit		8
Figure 3		Removal of Unit From Skid		8
Figure 4		Unit on Appliance Cart for Moving		9
Figure 5		Installation With Free Blow Plenum		10
Figure 6		Ducted Application		10
Figure 7		Supply Duct Connections		11
Figure 8		Filter Location		11
Figure 9		Optional Side Drain		12
Figure 10		Standard Rear Drain		12
Figure 11		Rear Drain (Top View)		13
Figure 12		Unit Mounting		13
Figure 13		Removing Locking Screws from Wheels...		14
Figure 14		Component Location		15
Figure 15		Thermostat Plug Terminals		17
Figure 16		Thermostat Wiring Diagram	"X" Option ....	18
Figure 17		Thermostat Wiring Diagram	"A" Option ....	19
Figure 18		Thermostat Wiring Diagram	"D" Option ...	20
Figure 19		Fresh Air Damper Removal		24
Figure 20		QERV Removal		25
Figure 21		Heat Pump Control Board		26
Figure 22		Low Pressure Control Bypass Timer		27
Figure 23		Control Disassembly		31
Figure 24		Winding Test		31
Figure 25		Drip Loop		31
Figure 26		Fan Blade Setting		32
Manual	2100-420H
Page	2 of 34

Start Up
Description of Standard Equipment		21
Optional CFM (QH362, QH422, QH482 & QH602 Only)		..... 21
Important Installer Note		21
Phase Monitor		21
Three Phase Scroll Compressor Start Up
Information		21
Service Hints		22
Mist Eliminator Service		22
Vent Options		23
Sequence of Operation		26
Optional Climate Controls Sequence
of Operation		26
Pressure Service Ports		26
Defrost Cycle		27
Troubleshooting
Solid State Heat Pump Control Troubleshooting
Procedure		29
Checking Temperature Sensor		29
Troubleshooting GE ECM™ Blower Motors		30-31
Fan Blade Setting Dimensions		32
Refrigerant Charge		32
Pressure Charts	33 - 34

Tables
Table 1	Factory Built-In Electric Heat Table	.............. 4
Table 2	Electrical Specifications	5
Table 2A	Electrical Specifications	6
Table 3	Operating Voltage Range	15
Table 4	Wall Thermostats	17
Table 5	Troubleshooting	28
Table 6	Temperature vs Resistance of
	Temperature Sensor	29
Table 7	Fan Blade Dimensions	32
Table 8	Super Heat at Compressor	32
Table 9	Indoor Blower Performance	32
Table 10	Cooling Pressure	33
Table 11	Heating Pressure	34