Carrier 50TFQ004 Installation, Start-Up And Service Instructions Manual
Carrier 50TFQ004 Installation, Start-Up And Service Instructions Manual

Carrier 50TFQ004 Installation, Start-Up And Service Instructions Manual

Single-package rooftop heat pump units
Hide thumbs Also See for 50TFQ004:

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 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
loading
Need help?

Need help?

Do you have a question about the 50TFQ004 and is the answer not in the manual?

Questions and answers

This manual is also suitable for:

50tfq00550tfq00650tfq007

Table of Contents