1
50HCQA
Single Package Rooftop
Heat Pump
with Puronr (R---410A) Refrigerant
S i z e s 0 4 --- 0 6
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 5......................
Step 5 -- Field Fabricate Ductwork 7................
For Units with Accessory Electric Heaters 7......
Step 6 -- Rig and Place Unit 7.....................
Positioning on Curb 8........................
Step 7 -- Convert to Horizontal & Connect Ductwork 8..
Step 8 -- Install Outside Air Hood 9................
Economizer Hood Removal and Setup 9.........
Two Position Damper Hood Removal and Setup 9...
Economizer Hood and Two--Position Hood 10.....
Step 9 -- Install External Condensate Trap and Line 10...
Step 10 -- Make Electrical Connections 11...........
Field Power Supply 11........................
Units without Factory--Installed Disconnect 11....
Units with Factory--Installed Disconnect 12.......
Convenience Outlets 12.......................
Factory--Option Thru--Base Connections 13.......
Units without Thru--Base Connections 14.........
Field Control Wiring 14.......................
Thermostat 14...............................
Unit without Thru--Base Connection Kit 14.......
Heat Anticipator Settings 14...................
Electric Heaters 15..............................
Single Point Boxes and Supplementary Fuses 16.....
PremierLinkt (Factory Option) 17.................
Supply Air Temperature (SAT) Sensor 17.........
Outdoor Air Temperature (OAT) Sensor 19.......
EconoMi$ert219...........................
Field Connections 19..........................
Space Temperature (SPT) Sensors 19............
Connect Thermostat 19.......................
Configure the Unit for Thermostat Mode 22......
Economizer Controls 22........................
Outdoor Air Enthalpy Control 22...............
Differential Enthalpy Control 22................
Return Air Enthalpy Sensor 22
.................
Indoor Air Quality (CO
2
sensor) 22.............
Outdoor Air Quality Sensor 23.................
Smoke Detector/Fire Shutdown (FSD) 23.........
Filter Status Switch 24........................
Supply Fan Status Switch 24...................
Remote Occupied Switch 24...................
Space Relative Humidity Sensor 24.............
Power Exhaust (output) 24.....................
CCN Communication Bus 24..................
RTU--MP Control System 26......................
Supply Air Temperature (SAT) Sensor 28.........
Outdoor Air Temperature (OAT) Sensor 28.......
EconoMi$ert228...........................
Field Connections 29..........................
Space Sensors 29............................
Economizer Controls 29........................
Outdoor Air Enthalpy Control 29...............
Differential Enthalpy Control 29................
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