Reznor ZQYRA Unit Installation Manual - Manual (Page 2)

Form I-ZQYRA P/N 260414R5, Page 2
WARNING
Improper installation, adjustment, alteration, service, or
maintenance can cause property damage, personal injury, or
death. A qualified installer or service agency must perform
installation and service.
1.0 General 1.1 Hazard Labels and Notices
There are warning labels on the condensing unit and throughout this manual. For
your safety, read the definitions below and comply with all boxes labeled CAUTION,
WARNING, and DANGER during installation, operation, maintenance, and service of
this system.
Definitions of Hazard Intensity Levels in this Manual
HAZARD INTENSITY LEVELS
DANGER: Failure to comply will result in severe personal injury
or death and/or property damage.
WARNING: Failure to comply could result in severe personal
injury or death and/or property damage.
CAUTION: Failure to comply could result in minor personal
injury and/or property damage.
1.0 General .......................................................................... 2
1.1 Hazard Labels and Notices ....................................... 2
1.2 General Information .................................................... 3
1.3 Warranty ...................................................................... 3
1.4 Installation Codes ....................................................... 3
2.0 Location ......................................................................... 3
3.0 Receiving, Moving, and Uncrating .............................. 3
3.1 Receiving .................................................................... 3
3.2 Storage and Moving .................................................... 3
3.3 Uncrating and Preparation ......................................... 4
4.0 Dimensions and Clearances ........................................ 4
4.1 Dimensions .................................................................. 4
4.2 Clearances ................................................................... 5
5.0 Mounting ........................................................................ 5
5.1 Weights ........................................................................ 5
5.2 Rigging and Lifting ..................................................... 5
5.3.1 Mounting without a Roof Curb .............................. 6
5.3.2 Mounting on a Roof Curb ...................................... 6
5.3 Curb Cap Base and Mounting .................................... 6
6.0 Mechanical .................................................................... 9
6.1 Identity of Mechanical Procedure Locations ............ 9
6.2 Inlet Air and Exhaust Air Openings .......................... 9
6.2.1 Field-Installed Inlet Air and Exhaust Hoods ........ 9
6.2.3 Inlet Air Hood ........................................................ 10
6.2.2 Exhaust Air Hood ................................................. 10
6.2.4 Inlet and Exhaust Dampers, Option AR2Y ......... 12
6.3 Duct Connections and Ductwork ............................ 12
6.4 Condensate Drain ..................................................... 13
7.0 Electrical Connections and Wiring ........................... 14
7.1 Supply Voltage .......................................................... 14
7.2 Supply Wiring ............................................................ 15
7.3 Electrical Compartment ............................................ 16
7.4 Electrical Components ............................................. 16
7.4.1 Fan Motors ............................................................ 16
7.4.2 Energy Recovery (enthalpy) Wheel ................... 17
7.4.3 Heat Pump (R-410A Refrigerant) ........................ 17
7.4.4 Optional Electric Preheat (5kW or 10kW) ........... 18
7.5 Control Wiring (field-installed) ................................. 18
7.5.1 Control Wiring General Requirements ............... 18
7.5.2 Specific Wiring by Control Option ...................... 19
8.0 Controls ....................................................................... 25
8.1 Main Control Module and Unit Mounted Display ... 25
8.2 Sequence of Operation ............................................. 26
8.3 Safeties, Alarms, and Lockouts .............................. 30
8.3.1 Service Alarms ...................................................... 31
8.3.2 Maintenance Alarms ............................................ 33
8.4 Control Points ........................................................... 34
8.5 Controller Display Menus ......................................... 34
8.6 Setting Schedule ....................................................... 52
8.7 Optional Communication Cards .............................. 52
8.7.1 BACnet ® MSTP (Option BHB8) Communication 52
8.7.2 LONworks ® (Option BHB7) Communication ...... 55
8.8 Dirty Filter Alarm, Option BE18................................ 57
9.0 Startup ......................................................................... 57
9.1 Preparation and Startup Requirements .................. 57
9.2 Test Mode Control ..................................................... 57
9.3 Setting Fans to Test and Balance Airflow .............. 59
9.3.1 Setting Fan Speeds Using the TAB Menu .......... 59
9.3.2 Supply and Exhaust Airflow Pressure Drop ...... 60
10.0 Maintenance and Service ......................................... 62
10.1 Maintenance Schedule ........................................... 62
10.2 Maintenance Procedures ........................................ 62
10.2.1 Inlet and Exhaust Hoods.................................... 62
10.2.2 Inlet and Exhaust Fans ...................................... 62
10.2.3 Inlet and Return Air Filters ................................ 62
10.2.4 Energy Recovery Wheel..................................... 62
10.2.5 Heat Pump Maintenance ................................... 65
10.3 Troubleshooting ...................................................... 67
10.3.1 General Troubleshooting ................................... 67
10.3.2 Compressor Digital Controller .......................... 69
APPENDIX ......................................................................... 70
Wiring Diagram Option Identification ............................ 70
DAT, OAT, and Wheel DAT Sensor Resistance
VS Temperature ....................................................... 70
Startup Form .................................................................... 71
INDEX ................................................................................. 72
INSTALLATION RECORD - to be completed by the
installer:........................................................................ 72
Table of Contents