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48TC**16
Single Package Rooftop
Gas Heating/Electric Cooling Unit
with Puronr (R---410A) Refrigerant
Size 16
Installation Instructions
NOTE: Read the entire instruction manual before starting
the installation
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2....................
INSTALLATION 4...............................
Jobsite Survey 4................................
Step 1 -- Plan for Unit Location 4..................
Roof Mount 5...............................
Step 2 -- Plan for Sequence of Unit Installation 5......
Curb--Mount Installation 5.....................
Pad--Mount Installation 5......................
Frame--Mount Installation 5....................
Step 3 -- Inspect Unit 5...........................
Step 4 -- Provide Unit Support 5...................
Roof Curb Mount 5..........................
Slab Mount (Horizontal Units Only) 5...........
Alternate Unit Support
(In Lieu of Curb or Slab Mount) 5..............
Step 5 -- Field Fabricate Ductwork 7................
Step 6 -- Rig and Place Unit 7.....................
Positioning on Curb 8........................
Step 7 -- Convert to Horizontal and Connect Ductwork 8...
Step 8 -- Install Outside Air Hood 9................
Economizer Hood Removal and Setup —
Factory Option 9............................
Two Position Damper Hood Removal and Setup —
Factory Option 9............................
Economizer Hood and Two--Position Hood 10.....
Step 9 -- Install Flue Hood 10.....................
Step 10 -- Install Gas Piping 11....................
Factory--Option Thru--Base Connections
(Gas Connections) 11.........................
Step 11 -- Install External Condensate Trap and Line 13..
Step 12 -- Make Electrical Connections 14...........
Field Power Supply 14........................
All Units 15................................
Units without Factory--Installed Disconnect 15....
Units with Factory--Installed Disconnect 15.......
Convenience Outlets 16.......................
Factory--Option Thru--Base Connections
(Electrical Connections) 18....................
Units without Thru--Base Connections 18.........
Field Control Wiring 18.......................
Thermostat 18...............................
Unit without Thru--Base Connection Kit 19.......
Heat Anticipator Settings 19...................
Humidi--MiZer
R
Control Connections 20..........
Humidi--MiZer -- Space RH Controller 20........
PremierLinkt (Factory Option) 21.................
Supply Air Temperature (SAT) Sensor 25.........
Outdoor Air Temperature (OAT) Sensor 25.......
EconoMi$er2 25.............................
Field Connections 25..........................
Space Sensors 27............................
Connect Thermostat 27.......................
Configure the Unit for Thermostat Mode 27......
Economizer Controls 28........................
Indoor Air Quality (CO
2
sensor) 28.............
Outdoor Air Quality Sensor 28.................
Space Relative Humidity Sensor or
Humidistat Connections 29....................
Smoke Detector/Fire Shutdown (FSD) 30.........
Filter Status Switch 30........................
Supply Fan Status Switch 30...................
Remote Occupied Switch 30...................
Power Exhaust (output) 30.....................
CCN Communication Bus 31..................
RTU Open Control System 32.....................
Supply Air Temperature (SAT) Sensor 35.........
Outdoor Air Temperature (OAT) Sensor 35.......
EconoMi$er2 35.............................
Field Connections 35..........................
Space Temperature (SPT) Sensors 36............
Indoor Air Quality (CO
2
)Sensor 36.............