Table Of Contents - Bard D25A2PA Installation And Service Instructions Manual

CONTENTS
SECTION 1: Installation Instructions ......................................................................................................... 5
List of Necessary Materials/Tools .........................................................................................................................6
Site Preparation .................................................................................................................................................7
Wall-Mount Unit Installation ...............................................................................................................................9
Wall-Mount Unit Supply Wiring ..........................................................................................................................15
Preliminary Start-Up .........................................................................................................................................19
SECTION 2: Service Instructions ............................................................................................................... 21
General Refrigerant Information .........................................................................................................................22
Sequence of Operation .....................................................................................................................................24
Using the TEC-EYE ........................................................................................................................................27
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Componentry Specifications ..............................................................................................................................30
Maintenance and Troubleshooting ......................................................................................................................38
SECTION 3: Appendix .................................................................................................................................. 45
Wall-Mount Unit Architecture ............................................................................................................................46
FIGURES AND TABLES
Figure 1.1 Wall-Mount Unit Model Nomenclature ......6
Figure 1.2 Dimensions ............................................8
Figure 1.3A D25A, D25L, D35A, D35L
Mounting Instructions ...........................10
Figure 1.3B D28A, D28L, D36A, D36L, D42A, D42L,
Mounting Instructions ...........................11
Figure 1.3C D48A, D48L, D60A, D60L
Mounting Instructions ...........................12
Figure 1.4 Electric Heat Clearance .........................13
Figure 1.5 Wall Mounting Instructions ....................13
Figure 1.6 Wall Mounting Instructions ....................14
Figure 1.7 Common Wall Mounting Installations ......14
Figure 1.8 Circuit Routing Label ............................15
Figure 1.9 WIRING: VAC and VDC Supply Wiring
Landing Points .....................................17
Figure 1.10 Adjusting the 230/208VAC Transformer ..17
Figure 1.11 Bard Polarity-Voltage Monitor .................18
Figure 2.1 Refrigerant Sight Glass .........................23
Figure 2.2 Wall-Mount Unit Control Board ..............25
Figure 2.3 TEC-EYE Display ................................27
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Figure 2.4 TEC-EYE Connection to Unit Control ....27
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Figure 2.5 TEC-EYE Status Display......................28
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Figure 2.6 Fan Blade Setting .................................32
Figure 2.7 Dirty Filter Switch .................................32
Figure 2.8 Power Loss Relay Circuit .......................33
Figure 2.9 High Pressure Relay Circuit ...................33
Figure 2.10 Blower Motor Start Relay Circuit ............33
Figure 2.11 D25A/L, D35A/L Unit Control Panel .......34
Figure 2.12 D28A/L, D36A/L, D42A/L, D48A/L,
D60A/L Unit Control Panel ....................35
Figure 2.13 WIRING: D25A/L, D35A/L
Unit Wiring Diagram .............................36
Figure 2.14 WIRING: D28A/L, D36A/L, D42A/L, ..........
D48A/L, D60A/L Unit Wiring Diagram ....37
Figure 2.15 Troubleshooting Motor Power Supply ......39
Figure 2.16 Troubleshooting Motor Start Command ...40
Figure 2.17 Troubleshooting Speed Voltage ...............40
Figure 2.18 VDC Polarity Check ...............................41
Figure 2.19 Verifying Incoming Voltage: VDC .............42
Manual 2100-643C
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Table 1.1 Electrical Specifications ..........................16
Table 2.1 Nominal Pressures ..................................23
Table 2.2 Blower Speed Voltage Chart .....................24
Table 2.3 Temp vs. Resistance of Temp Sensor. ........31
Table 2.4 Indoor Blower Performance ......................32
Table 2.5 Troubleshooting 48VDC Blower Motor ........39
Table 2.6 Blower Speed Voltage Chart .....................40