Reznor SHH (Indoor PreevA) Unit Installation Manual User Manual
Page 2
Form I-PDH/SDH/PEH/SHH/PXH, Page 2
1.0 General
1.2 Hazard Labels and Notices
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, and service of this heater.
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.
WARNING
Installation should be done by a qualified agency in
accordance with these instructions. The qualified service
agency installing this unit heater is responsible for the
installation.
1.0 General.............................................................. 2
1.1 Application .........................................................................2
1.2 Hazard Labels and Notices ...............................................2
1.3 General Installation Information .........................................3
1.4 Warranty ............................................................................4
1.5 Installation Codes ..............................................................4
for Installation .................................................. 5
4.0 Dimensions and Clearances ........................... 7
4.1 Clearances .......................................................................7
4.2 Configurations and Dimensions .........................................8
and Mounting ................................................ 10
5.2 Lifting and Suspension ...................................................10
5.1 Weights ...........................................................................10
5.3 Mounting .........................................................................12
6.0 Mechanical...................................................... 13
6.1 Gas Heat Section Piping and Pressure - Models PDH, SDH,
and SHH ..........................................................................13
6.2 Gas Heat Section Condensate Drain(s) ..........................19
6.3 Combustion Air Requirements - Model PDH ...................21
6.4 Unit Inlet Air (Supply Air) .................................................22
6.5 Optional Evaporative Cooling Module (factory installed) -
Models PDH, SDH, SHH, PEH, and PXH .......................29
6.6 Cooling Module - Option AU on PDH, SDH, PEH, SHH, and
PXH .................................................................................33
6.7 Unit Discharge ................................................................36
6.8 Blowers, Belts, and Drives ..............................................42
7.0 Electrical Supply and Wiring ....................... 43
7.2 Supply Wiring .................................................................43
7.1 General ...........................................................................43
7.3 Wiring Diagram and Unit Wiring Requirements ..............45
7.4 Control Wiring ..................................................................45
7.5 Electrical Operating Components ....................................47
7.6 Other Optional Electrical Components ............................49
8.0 Controls and Operation ................................. 51
8.1 Gas Controls - apply to Models PDH, SDH, and SHH ....51
8.2 Analog Controls for Heating or Heating/Makeup Air .......51
8.3 Digital Controls for Heating/Cooling, Makeup Air and
Dehumidification .............................................................53
8.4 Ignition System - Models PDH, SDH, and SHH ..............59
9.0 Commissioning and Startup ........................ 62
9.2 Checklist Prior to Startup ................................................62
9.1 General ............................................................................62
9.3 Startup Checklist and Warnings .....................................63
APPENDIX............................................................. 67
STARTUP FORM ...................................................................67
Wiring Diagram Option Identification .....................................68
Pressure/Temperature Chart for Checking Superheat &
Subcooling.......................................................................69
Index...................................................................... 71
INSTALLATION RECORD - to be completed by the
installer: .......................................................... 72
1.1 Application
The information in this manual applies to all Reznor
®
PREEVA
®
Indoor Models includ-
ing the high efficiency Model SHH. Each model has unique features. Please read care-
fully to be sure of what applies to the model being installed.
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