Bard QTEC Q24A1D Series, Installation Instructions Manual

Page: 2 / 41

Manual 2100-523
Page
2 of 41
CONTENTS
Figures
Figure 1 Unit Dimensions .......................................... 7
Figure 2 Air Seal Under 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 ................................... 13
Figure 10 Standard Rear Drain .................................. 13
Figure 11 Rear Drain (Top View) ............................... 13
Figure 12A Optional Rear Drain Kit ............................. 14
Figure 12B Optional Rear Drain Kit ............................. 15
Figure 12C Optional Rear Drain Kit ............................. 16
Figure 12D Optional Rear Drain Kit ............................. 17
Figure 13A Unit Mounting ............................................ 18
Figure 13B Unit Mounting ............................................ 18
Figure 14 Removing Locking Screws from Wheels ... 19
Figure 15 Component Location ................................. 20
Figure 16 Thermostat Plug Terminals ........................ 22
Figure 17 Thermostat Wiring Diagram "X" Option .... 23
Figure 18 Thermostat Wiring Diagram "G" Option ... 24
Figure 19 Thermostat Wiring Diagram "E" Option .... 25
Figure 20 Thermostat Wiring Diagram "
I
" Option ..... 26
Figure 21 Fresh Air Damper Removal ....................... 32
Figure 22 QERV Removal ......................................... 33
Figure 23 CO
2
Controller ........................................... 34
Figure 24 Air Conditioning Mode Circuit Diagram ..... 35
Figure 25 Dehumidification Mode Circuit Diagram .... 36
Figure 26 Control Disassembly ................................. 39
Figure 27 Winding Test .............................................. 39
Figure 28 Drip Loop ................................................... 39
Figure 29 Fan Blade Setting ...................................... 40
Getting Other Information and Publications
For more information, contact these publishers ........... 3
QT
EC
General Information
QT
EC
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
Service Light ............................................................... 12
Condensate Drain ...................................................... 12
Optional Rear Drain Kits ............................................. 12
Separate Evaporator Drain Connection ..................... 12
Installation Instructions
Mounting the Unit ....................................................... 19
Wiring — Main Power ................................................. 20
Wiring — Low Voltage Wiring ..................................... 20
Low Voltage Connections ........................................... 21
General ....................................................................... 21
S
tart Up – R-410A Refrigerant
General .......................................................................... 27
Topping off System Charge ............................................ 27
Saftety Practices ............................................................ 27
Description of Standard Equipment ............................... 28
Optional CFM (Q36A1D, Q42A1D, Q48A1D & Q60A1D Only) .....
28
Important Installer Note .................................................. 28
Phase Monitor ................................................................ 28
Three Phase Scroll Compressor Start Up Info. ..... 28 & 29
Compressor Control Module .......................................... 29
Adjustments ................................................................... 29
Service Hints ......................................................... 29 & 30
Mist Eliminator Service .................................................. 30
Vent Options ......................................................... 30 & 31
Sequence of Operation .................................................. 34
CRV / QERV Operation .................................................. 34
Optional Climate Controls Sequence of Operation ........ 34
Pressure Service Ports .................................................. 34
Troubleshooting
Troubleshooting Table .................................................... 37
Dehumidification Relay Logic Board .............................. 37
Troubleshooting GE ECM™ Blower Motors ............. 38-39
Fan Blade Setting Dimensions ...................................... 40
Refrigerant Charge ........................................................ 40
Pressure Chart ............................................................... 41
Tables
Table 1 Factory Built-In Electric Heat Table .............. 5
Table 2 Electrical Specifications ................................ 6
Table 2A Electrical Specifications ................................ 7
Table 3
Operating Voltage Range ........................... 20
Table 4 Wall Thermostats ........................................ 22
Table 5A Troubleshooting .......................................... 37
Table 5B Dehum. Relay Logic Board ......................... 37
Table 6
Fan Blade Dimensions ............................... 40
Table 7 Subcooling @ Liquid Line ........................... 40
Table 8 Indoor Blower Performance ........................ 40
Table 9 Cooling Pressure ........................................ 41