Carrier 48TC**16 User's Manual
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- MiZerR 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$er2
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Connections
25
. . . . . . . . . . . . . . . . . . . . . . . . . .
Space Sensors
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect Thermostat
27
. . . . . . . . . . . . . . . . . . . . . . .
Configure the Unit for Thermostat Mode
27
. . . . . .
Economizer Controls
28
. . . . . . . . . . . . . . . . . . . . . . . .
Indoor Air Quality (CO2 sensor)
28
. . . . . . . . . . . . .
Outdoor Air Quality Sensor
28
. . . . . . . . . . . . . . . . .
Space Relative Humidity Sensor or
Humidistat Connections
29
. . . . . . . . . . . . . . . . . . . .
Smoke Detector/Fire Shutdown (FSD)
30
. . . . . . . . .
Filter Status Switch
30
. . . . . . . . . . . . . . . . . . . . . . . .
Supply Fan Status Switch
30
. . . . . . . . . . . . . . . . . . .
Remote Occupied Switch
30
. . . . . . . . . . . . . . . . . . .
Power Exhaust (output)
30
. . . . . . . . . . . . . . . . . . . . .
CCN Communication Bus
31
. . . . . . . . . . . . . . . . . .
RTU Open Control System
32
. . . . . . . . . . . . . . . . . . . . .
Supply Air Temperature (SAT) Sensor
35
. . . . . . . . .
Outdoor Air Temperature (OAT) Sensor
35
. . . . . . .
EconoMi$er2
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Connections
35
. . . . . . . . . . . . . . . . . . . . . . . . . .
Space Temperature (SPT) Sensors
36
. . . . . . . . . . . .
Indoor Air Quality (CO2) Sensor
36
. . . . . . . . . . . . .
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