Reznor RXH (Outdoor PreevA) Unit Installation Manual - Manual (Page 2)

Form I-RDH/REH/RHH/RXH (12-14), Page 2
1.0 General
1.2 Hazard Labels and
Notices
Contents
1.0 General .......................................................... 2
1.1 Application.....................................................................2
1.2 Hazard Labels and Notices ...........................................2
1.3 General Installation Information ....................................3
1.4 Warranty .......................................................................3
1.5 Installation Codes .........................................................3
2.0 Location......................................................... 4
3.0 Receiving, Uncrating, and Preparing for
Installation .................................................... 4
4.0 Clearances and Dimensions........................ 5
4.1 Clearances ....................................................................5
4.2 Configurations and Dimensions ....................................6
5.0 Mounting and Lifting ................................. 10
5.1 Weights ......................................................................10
5.2 Mounting .....................................................................10
5.3 Rigging and Lifting ......................................................15
6.0 Mechanical .................................................. 15
6.1 Gas Piping and Pressures - Models RDH and RHH ...15
6.2 Heat Section Condensate Drain(s) - Models RDH and
RHH ...........................................................................22
6.3 Venting - Models RDH and RHH.................................23
6.4 Unit Inlet Air (Supply Air) -
Models RDH, REH, RHH, and RXH ..........................24
6.5 Optional Evaporative Cooling Module (factory installed)
31
6.6 Optional Cooling Coil Module (factory installed) ........35
6.7 Optional Energy Recovery Module (field-installed) -
RDH, REH, RHH, and RXH .......................................37
6.8 Unit Discharge - RDH, REH, RHH, and RXH .............38
6.9 Blowers, Belts, and Drives - RDH, REH, RHH, RXH ..42
7.0 Electrical Supply and Wiring .................... 43
7.1 General .......................................................................43
7.2 Supply Wiring ..............................................................43
7.3 Unit Wiring Requirements and Wiring Diagrams ........45
7.4 Control Wiring .............................................................45
7.5 Electrical Operating Components ...............................46
7.6 Other Optional Electrical Components........................48
8.0 Controls and Operation ............................. 50
8.1 Gas Valve - Model RDH and Model RHH ...................50
8.2 Analog Controls for Heating or Heating/Makeup Air ..50
8.3 Digital Controls for Heating/Cooling, Makeup Air, and
Dehumidification - Models RDH, REH, RHH, and RXH
52
8.4 Ignition Systems - Model RDH and Model RHH .........58
9.0 Commissioning and Startup ..................... 60
9.1 General .......................................................................60
9.2 Checklist Prior to Startup ............................................60
9.3 Startup Warnings and Checklist ..................................61
APPENDIX ......................................................... 64
STARTUP FORM ..............................................................64
Wiring Diagram Option Identification ................................65
Pressure/Temperature
Chart for Checking Superheat and Subcooling ..........66
Index ................................................................. 67
INSTALLATION RECORD - to be completed by
the installer ................................................. 68
Definitions of Hazard
Intensity Levels in this
Manual
HAZARD INTENSITY LEVELS
1. DANGER: Failure to comply will result in severe personal injury or death
and/or property damage.
2. WARNING: Failure to comply could result in severe personal injury or
death and/or property damage.
3. CAUTION: Failure to comply could result in minor personal injury and/or
property damage.
1.1 Application
The information in this manual applies to Reznor ® PREEVA ® Outdoor Model RDH,
Model REH, Model RHH, and Model RXH. Each model has unique features. Please
read carefully to be sure of what applies to the model being installed.
There are warning labels on the 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.
Table of Contents
WARNING
Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and replace any gas control that has been under water.
WARNING - Models RDH and RHH:
Should overheating occur, or the gas supply fail to shut off, shut off the manual gas
valve to the appliance before shutting off the electrical supply.