Reznor RECC Unit Installation Manual - Manual (Page 2)

Form I-MAPSIII&IV, Page 2
1.1 Cautions and Warnings
There are warning labels on the unit, on the front page, and throughout this manual.
For your safety, comply with all warnings during installation, operation, and service of
this system. Definitions of the hazard intensity levels of the cautions, warnings, and
dangers are shown below.
1.0 General
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.
Definitions of Hazard
Intensity Levels used in
this Manual
1.0 General .....................................................2
1.1 Cautions and Warnings ................................. 2
1.2 General Information ...................................... 3
1.3 Warranty ....................................................... 3
1.4 Installation Codes ......................................... 4
2.0 Location and Moving ...............................4
3.0 Receiving and Storage ............................4
3.1 Receiving ...................................................... 4
3.2 Storage ......................................................... 6
4.0 Clearances and Dimensions ...................6
4.1 Clearances ................................................... 6
4.2 Dimensions .................................................. 7
5.0 Mounting ...................................................9
5.1 Approximate Weights .................................... 9
5.2 Curb Cap Base and Mounting .................... 10
5.3 Mounting a Horizontal Discharge System
on Cross Supports - D Cabinet only ............ 10
5.4 Mounting on a Roof Curb ........................... 10
5.5 Rigging and Lifting the MAPS ® Units .......... 28
6.0 Mechanical .............................................30
6.1 Energy Recovery Module (Option ER1) .... 30
6.2 Optional Power Exhaust or Gravity
Exhaust Hood - Cabinets A, B, C ............... 31
6.3 Outside Air Hoods ...................................... 32
6.4 Duct Connections and Ductwork ............... 37
6.5 Condensate Drains .................................... 38
6.6 Blowers, Belts, and Drives .......................... 39
7.0 Electrical and Wiring .............................41
7.1 General ...................................................... 41
7.2 Supply Wiring ............................................. 41
7.3 Wiring Diagram, Unit Wiring Requirements,
and Optional Convenience Outlet ............... 43
7.4 Control Wiring ............................................. 43
7.5 Blower Motor ............................................... 43
7.6 Condenser Fan Motors and Fans ............... 44
7.7 Compressors .............................................. 44
8.0 Controls ..................................................45
8.1 Cooling/Dehumidification/Heating Control . 45
8.2 Supply Fan (blower) Start/Stop Control ...... 49
8.3 Control Options ........................................... 51
9.0 Optional Equipment ..............................53
9.1 Inlet Air Options .......................................... 53
9.2 Gas Heat - RDCB, RDDB, RDCC, RDDC .. 55
9.3 Electric Heat - RECB, REDB, RECC,
REDC .......................................................... 63
10.0 Commissioning and Startup ...............64
10.1 General ..................................................... 64
10.2 Checklist Prior to Startup ......................... 64
10.3 Checklist - Startup ................................... 65
10.4 Checklist After Startup: ............................. 69
STARTUP Form for Reznor
® MAPS ® Units ....... 70
APPENDIX ....................................................71
Cross-Reference by Model/Size and
Cabinet Size A, B, C or D ............................ 71
Pressure/Temperature Chart for Checking
Superheat and Subcooling .......................... 72
Wiring Diagram Option Identification ................ 73
References ...................................................74
Index .............................................................75
INSTALLATION RECORD ...........................76
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