Carrier WeatherMaster 50HCQ, Installation Instructions Manual

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1
Installation Instructions
50HCQ
WeatherMaster
R
Series
Single Package Rooftop
Heat Pump
with Puron
r
(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$er X (Factory−Installed Option) 24 . . . . . . . . .
Staged Air Volume (SAV
t
) with
Variable Frequency Drive (Factory−Installed Option) 24
PremierLink
t
Controller (Factory Option) 25 . . . . . . . .
Supply Air Temperature (SAT) Sensor 27 . . . . . . . . .
Outdoor Air Temperature (OAT) Sensor 27 . . . . . . .
EconoMi$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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .