Bard Q-TEC Q48H4DB Manuals

Manuals and User Guides for Bard Q-TEC Q48H4DB. We have 1 Bard Q-TEC Q48H4DB manual available for free PDF download: Installation Instructions Manual

Bard Q-TEC Q48H4DB Installation Instructions Manual (57 pages)

11EER Packaged Heat Pump

Brand: Bard | Category: Heat Pump | Size: 2.42 MB

Table of Contents
2
Getting Other Information and Publications
3
Q-TEC TM General Information
4
Q-TEC Model Nomenclature
4
Shipping Damage
4
Unit Removal from Skid
4
Figure 1 Air Seal under Q-TEC Unit
5
Figure 2 Removal of Q-TEC Unit from Skid
5
Handling Unit after Removal from Skid
6
General
6
Figure 3 Fan Assembly Removal
6
Figure 4 Q-TEC Unit on Appliance Cart
6
Minimum Installation Height
7
Figure 5 Installation with Duct-Free Plenum
7
Figure 6 Ducted Application
7
Duct Work
8
Filters
8
Figure 7 Supply Duct Connections
8
Figure 8 Filter Location
8
Switching Filter Sizes
9
Fresh Air Intake
9
Vent Options
9
Barometric Fresh Air Damper (Standard)
9
Figure 9 Filter Tabs in up Position
9
Figure 10 Bend Filter Tabs down
9
Figure 11 Fresh Air Damper Assembly
9
Commercial Room Ventilator (Option)
10
Q-TEC Energy Recovery Ventilator (Option)
10
Installation
11
Basic Installation Design and Application Planning
11
Mounting the Unit
11
Figure 12 Remove Compressor Shipping Brackets
11
Figure 13A Unit Mounting - Method 1
12
Figure 13B Unit Mounting - Method 2
12
Condensate Drain
13
Figure 14 Remove Locking Screws from Wheels
13
Figure 15 Optional Side Drain (Side View)
13
Figure 16 Standard Rear Drain
13
Optional Rear Drain Kits
14
Figure 17 Rear Drain (Top View)
14
Figure 18A
15
Figure 18B
15
Figure 18C
16
Figure 18D
17
Indoor Ducted and Non-Ducted Applications
18
Indoor Supply Airflow
18
Indoor Return Airflow
18
Ducted Applications
18
Free Blow Applications
18
Thermostat or Indoor Temperature Sensor Placement
18
Figure 19 Unit Dimensions
19
Wiring - Main Power
20
High Voltage Connections
20
Figure 20 High Voltage Connections
20
Wiring - Low Voltage
21
Low Voltage Connections
21
Unit Shutdown Feature
21
Balanced Climate TM Feature
21
Dehumidification Feature
21
Ventilation Features
21
Low Ambient Control
22
Outdoor Temperature Switch and Freeze Protection Thermostat
22
Table 1 Wall Thermostats
23
Table 2 Humidity Controls
23
Table 3 CO Controllers
23
Table 4 Thermostat Wire Size
23
Figure 21 Programmable Thermostat Connections
24
Figure 22 Non-Programmable Thermostat Connections
25
Start up
26
General
26
Topping off System Charge
26
Safety Practices
26
Important Installer Notes
26
High and Low Pressure Switches
26
Three Phase Scroll Compressor Start up
27
Information
27
Phase Monitor
27
Condenser Fan Operation
27
Service Hints
27
Sequence of Operation
27
Cooling
27
Heating
27
Balanced Climate TM Mode
28
Defrost Cycle
28
Figure 23 Defrost Control Board
29
Low Pressure Switch Bypass Operation
30
High Pressure Switch Operation
30
Vent Connection Plug
30
Pressure Service Ports
30
Manual 2100-742B
30
Service
31
Solid State Heat Pump Control Troubleshooting Procedure
31
Table 5 Troubleshooting
31
Checking Temperature Sensor Outside Unit Circuit
32
Table 6 Temperature Vs. Resistance
32
Troubleshooting ECM 142R Outdoor Fan Motors
33
Replacing the Motor
34
Table 7 Troubleshooting ECM 142R Outdoor Fan Motors
34
Troubleshooting ECM Indoor Blower Motors
35
Replacing ECM Control Module
36
Figure 24 Control Disassembly
36
Figure 25 Winding Test
36
Figure 26 Drip Loop
36
Table 8 Troubleshooting ECM Blower Motors
37
Troubleshooting
37
Figure 27 Control Connector Motor Half
37
Fan Blade Setting Dimensions
38
R-410A Refrigerant Charge
38
Removal of Fan Shroud
38
Table 9 Fan Blade Dimensions
38
Figure 28 Fan Blade Setting
38
Figure 29 Fan Shroud Removal
38
Table 10A Cooling Pressure - Standard Airflow
39
Table 10B Heating Pressure - Standard Airflow
39
Table 11 Cooling Pressure - Balanced Climate Airflow
40
Table 12 Electrical Specifications Q**H4 Series
41
Table 13 Indoor Blower Performance
42
Table 14 Maximum ESP Electric Heat Only
42
Table 15 Electric Heat
42
Dehumidification Unit Instructions
46
Dehumidification Circuit
46
Dehumidification Sequence of Operation
46
Balanced Climate Mode
46
Electronic Expansion Valve
46
Operation
46
EEV Instructions for Vacuuming, Reclaiming and Charging Unit
46
Troubleshooting the Electronic Expansion Valve
47
Figure 30 Electronic Expansion Valve (EEV) and Service Tool
47
Figure 31 High Side Connection
47
Control Board
48
Electronic Expansion Valve
48
Relay in EEV Control Box
48
Stator Coil
48
Transducer Sensor
48
Figure 32 Voltage to Pressure: Suction Pressure Transducer
48
Thermistor Sensor
49
Table 17 10K OHM NTC Sensor: Temperature/Resistance
49
Heat Pump Circuit Diagrams
50
Q24HD Cooling and Dehumidification Application Data
51
Q30HD Cooling and Dehumidification Application Data
52
Q36HD Cooling and Dehumidification Application Data
53
Q43HD Cooling and Dehumidification Application Data
54
Q48HD Cooling and Dehumidification Application Data
55
Table 18 Dehumidification Relay Logic Board
56
Table 19 Electrical Specifications Q**H4D Series
57

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