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Installation Instructions
50HCQ
WeatherMaster
R
Series
Single Package Rooftop
Heat Pump
with Puronr (R-410A) Refrigerant
Sizes 07, 08, 09
NOTE: Read the entire instruction manual before starting
the installation
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2....................
Rated Indoor Airflow (cfm) 3.....................
REFRIGERATION SYSTEM COMPONENTS 8.......
INSTALLATION 10..............................
Jobsite Survey 10...............................
Step 1 − Plan for Unit Location 10.................
Roof Mount 10..............................
Step 2 − Plan for Sequence of Unit Installation 10.....
Curb−Mounted Installation 10..................
Pad−Mounted Installation 10...................
Frame−Mouned Installation 10.................
Step 3 − Inspect Unit 10..........................
Step 4 − Provide Unit Support 10..................
Roof Curb Mount 10.........................
Slab Mount (Horizontal Units Only) 11..........
Alternate Unit Support 11.....................
Step 5 − Field Fabricate Ductwork 13...............
For Units with Accessory Electric Heaters 13.....
Step 6 − Rig and Place Unit 13....................
Positioning on Curb 13.......................
Step 7 − Convert to Horizontal & Connect Ductwork 14.
Step 8 − Install Outside Air Hood 15...............
Economizer and Two Position Damper Hood
Package Removal and Setup − Factory Option 15..
Economizer Hood and Two−Position Hood 15.....
Step 9 − Install External Condensate Trap and Line 16...
Step 10 − Make Electrical Connections 16...........
Field Power Supply 16........................
Units with Factory−Installed
Non−Fused Disconnect 17.....................
Units without Factory−Installed
Non−Fused Disconnect 18.....................
Convenience Outlets 18.......................
Factory Option Thru−Base Connections 20.......
Units without Thru−Base Connections 20.........
Field Control Wiring 20.......................
Thermostat 20...............................
Central Terminal Board 20......................
Commercial Defrost Control 21..................
Unit without Thru−Base Connection Kit 23.......
Heat Anticipator Settings 23...................
Electric Heaters 23..............................
Single Point Boxes and Supplementary Fuses 24.....
Single Point Boxes without Fuses 24..............
Low−Voltage Control Connections 24.............
EconoMi$er X (Factory−Installed Option) 24.........
Staged Air Volume (SAVt) with
Variable Frequency Drive (Factory−Installed Option) 24
PremierLinkt Controller (Factory Option) 25........
Supply Air Temperature (SAT) Sensor 27.........
Outdoor Air Temperature (OAT) Sensor 27.......
EconoMi$er2 27.............................
Field Connections 27..........................
Space Sensors 30............................
Connect Thermostat 30.......................
Configure the Unit for Thermostat Mode 30......
Economizer Controls 31........................
Indoor Air Quality (CO
2
sensor) 31.............
Outdoor Air Quality Sensor 31.................
Smoke Detector/Fire Shutdown (FSD) 32.........
Filter Status Switch 32........................
Supply Fan Status Switch 32...................
Remote Occupied Switch 32...................
Power Exhaust (output) 33.....................
CCN Communication Bus 33..................
RTU Open Controller System 34...................
Supply Air Temperature (SAT) Sensor 36.........
Outdoor Air Temperature (OAT) Sensor 36.......
EconoMi$er2 36.............................
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