Table of Contents
Advertisement
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
Step 1 - Provide Unit Support . . . . . . . . . . . . . . . . . . . . . .1
Step 2 - Field Fabricate Ductwork . . . . . . . . . . . . . . . . . .2
and External Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Step 4 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . .2
• POSITIONING
Step 5 - Make Electrical Connections . . . . . . . . . . . . . .7
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
Step 6 - Adjust Factory-Installed Options . . . . . . . . .17
Step 7 - Adjust Indoor-Fan Speed . . . . . . . . . . . . . . . . .29
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-45
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45-47
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-51
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500018-01
Book 1
4
Tab
5a 5a
Installation, Start-Up and
Service Instructions
Page
Printed in U.S.A.
Single-Package Rooftop
Heat Pump Units
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguisher available for all brazing operations.
Before performing service or maintenance operations on
unit, turn off main power switch to unit and tag disconnect.
Ensure voltage listed on unit data plate agrees with electri-
cal supply provided for the unit. Electrical shock could
cause serious personal injury.
INSTALLATION
Unit is shipped in the vertical discharge configuration. To
convert to horizontal configuration, remove horizontal duct
opening covers. Using the same screws, install covers on duct
openings in basepan of unit with the insulation-side down.
Seals around duct openings must be tight.
Step 1 - Provide Unit Support
ROOF CURB - Assemble and install the accessory roof
curb in accordance with instructions shipped with the curb.
See Fig. 1. Install insulation, cant strips, roofing felt, and
counter flashing as shown. Ductwork must be attached to the
curb, not to the unit. If electric or control power is to be routed
through the basepan, be sure to choose the appropriate acces-
sory kit. See Fig. 1. Attach the accessory thru-the-bottom ser-
vice connections to the basepan and roof curb in accordance
with the accessory installation instructions. Connections must
be installed before the unit is set on the roof curb.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for watertightness. Install gasket supplied with
the roof curb as shown in Fig. 1. Improperly applied
gasket can also result in air leaks and poor unit
performance.
The roof curb should be level. This is necessary for the unit
drain to function properly. Unit leveling tolerances are shown
in Fig. 2. Refer to Accessory Roof Curb Installation Instruc-
tions for additional information, as required.
Form 50TFQ-8SI
Pg 1
50TFQ004-007
9-05
Replaces: 50TFQ-6SI
Advertisement
Table of Contents
Related Manuals for Carrier WEATHERMAKER 50TFQ007
Summarization of Contents
Safety Considerations and Installation Overview
General Safety Precautions
Follow safety codes, wear protective gear, use caution with electrical systems.
Provide Unit Support
Install roof curb, slab mount, or alternate support for the unit.
Field Fabricate Ductwork
Secure and insulate all external ductwork and roof openings.
Install Condensate Drain Line
Connect drain line and external trap, ensure proper pitch for drainage.
Rig and Place Unit
Inspect for transport damage, lift unit upright using provided holes.
Positioning and Clearances
Ensure proper unit placement with required clearances for service and airflow.
Make Electrical Connections
Field Power Supply Wiring
Connect field power supply, verify voltage matches unit nameplate.
Field Control Wiring
Route thermostat cable to low-voltage connections, maintain wire separation.
Defrost Board and Heat Anticipator Settings
Adjust defrost cycle timer and set heat anticipator settings.
Adjust Factory-Installed Options
Disconnect Switch and Convenience Outlet
Configure optional disconnect switch and convenience outlet features.
Manual Outdoor-Air Damper Adjustment
Adjust damper position for required ventilation based on airflow.
PremierLink™ Control System
PremierLink Controller Overview and Sensors
Understand controller operation, install and wire sensors for system control.
PremierLink Wiring and Configurations
Follow wiring diagrams for sensor and controller connections.
Enthalpy Sensors and Control
Outdoor and Return Air Enthalpy Sensor Wiring
Connect enthalpy sensors for differential enthalpy control.
Optional Economizers
Economizer IV Standard Sensors and Controls
Understand sensor functions and control modes for economizer operation.
Economizer IV Control Modes
Configure economizer for dry bulb, differential dry bulb, or enthalpy changeover.
Economizer IV Control Modes
Outdoor Dry Bulb and Differential Dry Bulb Control
Utilize outdoor/return air temps for free cooling and economizer operation.
Enthalpy and CO2 Control
Configure economizer using enthalpy or CO2 sensors for ventilation control.
Adjust Indoor-Fan Speed
Belt-Drive Motor Speed Adjustment
Adjust fan speed by modifying pulley flange position and belt tension.
PRE-START-UP and START-UP Procedures
Pre-Start-Up Inspections
Conduct thorough inspections of unit components and connections before operation.
Unit Preparation and Checks
Ensure proper installation, filters, screens, and electrical connections.
Compressor Rotation and Cooling Setup
Verify compressor rotation and set up thermostat for cooling operation.
Operating Sequences
Cooling and Heating Sequences
Understand unit operation for cooling/heating without and with economizer.
PremierLink Control Sequences
Detail unit operation with PremierLink for cooling, heating, and economizer modes.
SERVICE Procedures
Cleaning and Lubrication
Clean coils, filters, drains; check fan bearings and belts.
Outdoor-Fan Adjustment and Economizer Settings
Adjust outdoor fan height and configure economizer settings.
TROUBLESHOOTING
EconoMi$er IV Troubleshooting and Checks
Perform diagnostic procedures for EconoMi$er IV, DCV, and power exhaust.
START-UP CHECKLIST
Preliminary Information and Pre-Start-Up Checks
Record unit details and perform pre-start-up inspections.
Start-Up Electrical and Temperature/Pressure Measurements
Measure electrical values and system temperatures/pressures during start-up.
Need help?
Do you have a question about the WEATHERMAKER 50TFQ007 and is the answer not in the manual?
Questions and answers