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581J
SINGLE PACKAGE ROOFTOP
GAS HEATING/ELECTRIC COOLING UNIT
SIZES 07, 08, 09 & 12 with PURON
R
(R--410A) REFIRGERANT
Installation Instructions
NOTE: Read the entire instruction manual before starting
the installation
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2....................
INSTALLATION 7...............................
Jobsite Survey 7................................
Step 1 -- Plan for Unit Location 7..................
Roof Mount 7...............................
Step 2 -- Plan for Sequence of Unit Installation 8......
Curb--Mount Installation 8.....................
Pad--Mount Installation 8......................
Frame--Mount Installation 8....................
Step 3 -- Inspect Unit 8...........................
Step 4 -- Provide Unit Support 8...................
Roof Curb Mount 8..........................
Slab Mount (Horizontal Units Only) 8...........
Alternate Unit Support
(In Lieu of Curb or Slab Mount) 8..............
Step 5 -- Field Fabricate Ductwork 11...............
Step 6 -- Rig and Place Unit 11....................
Positioning on Curb 12.......................
Step 7 -- Convert to Horizontal & Connect Ductwork 12...
Step 8 -- Install Outside Air Hood 12...............
Economizer and Two Position Damper Hood
Package Removal and Setup — Factory Option 12..
Economizer Hood and Two--Position Hood 13.....
Step 9 -- Install Flue Hood 13.....................
Step 10 -- Install Gas Piping 13....................
Factory--Option Thru--Base Connections
(Gas Connections) 14.........................
Step 11 -- Install External Condensate Trap and Line 16..
Step 12 -- Make Electrical Connections 17...........
Field Power Supply 17........................
Units with Factory--Installed Disconnect 17.......
Units without Factory--Installed Disconnect 17....
All Units 17................................
Convenience Outlets 18.......................
Factory--Option Thru--Base Connections
(Electrical Connections) 19....................
Units without Thru--Base Connections 19.........
Field Control Wiring 19.......................
Thermostat 19...............................
Unit without Thru--Base Connection Kit 20.......
Heat Anticipator Settings 20...................
Perfect Humidityt Control Connections 21........
Perfect Humidity -- Space RH Controller 21.......
RTU Open Control System 23...................
Supply Air Temperature (SAT) Sensor 26.........
Outdoor Air Temperature (OAT) Sensor 26.......
EconoMi$er2 27.............................
Field Connections 27..........................
Space Temperature (SPT) Sensors 27............
Indoor Air Quality (CO
2
)Sensor 28.............
Outdoor Air Quality Sensor 28.................
Smoke Detector/Fire Shutdown (FSD) 29.........
Space Humidity Sensor or Humidistat 29.........
Connecting Discrete Inputs 30..................
Communication Wiring -- Protocols 31............
General 31.................................
Local Access 32..............................
RTU Open Troubleshooting 32.................
Outdoor Air Enthalpy Control 33.................
Differential Enthalpy Control 33................
Return Air Enthalpy Sensor 34.................
Smoke Detectors 34...........................
System 34..................................
Controller 34...............................
Sensor Module 34...........................
Smoke Detector Locations 35....................
Supply Air 35...............................
Return Air without Economizer 35..............
Return Air with Economizer 35.................
Step 13 -- Adjust Factory--Installed Options 40........
Step 14 -- Install Accessories 40...................