Carrier 50DP016 - Manual

HEATING t COOLING
50DP,DPE012,014
50DP016,020
Single-Package Cooling Units
Installation, Start-Up and Service Instructions
CONTENTS
Page
safety considerations ........................... I
installation . . . . 1_10
• R oo F cto 'S"" ................... .. • • • '
• alternate unit support
• p * oot T t ”'9 Unit................................ 1
• POSITIONING
• ROOF MOUNT
Fabricate Ductwork.......................6
Q+fE c Nlake Unit Duct Connections....................... 6
c Trap Condensate Drain ................................. 6
m Make Electrical Connections................. 7
! POWER SUPPLY
CONTROL WIRING
Make Outdoor Air Inlet
Adjustments............................................................ ... 1
outdoor " AIR " d AMPE’ r ...........
• OPTIONAL ECONOMIZER
step 8 — Install Outdoor Air Hood......................... 10
^"FART-UP............................................................. 10-13
SERVICE..................................................................
14-16
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning
ment can be hazardous due to system pressure ano _
trical components. Only trained and •
personnel should install, repair or service air condì g
equipment.
Untrained personnel can perform basic
functions of cleaning coils and filters and rep g
filters. All other operations should ^
trained service personnel. When working on
tioning equipment, observe precautions »of“® ^ r>rpl
tags and labels attached to the unit and other sal y p
cautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations.
Have fire extinguishers available for all brazing
operations.
A WARNING
Before performing service or maintenance operations
on unit, turn off main power switch to unit. Electrical
shock could cause personal injury.
INSTALLATION
Step 1 — Provide Unit Support
ROOF CURB — Assemble and install accessory roof
curb in accordance with instructions shipped with this
accessory. Accessory roof curb and information required
to field fabricate a roof curb are shown in Fig. 1 and 2.
Install insulation, cant strips, roofing and flashing as
shown. Ductwork can be installed to roof curb before unit
is set in place. Curb should be level. Unit leveling toler­
ance is ± l/16in. per linear ft in any direction. This is
necessary to permit unit drain to function properly. Refer
to Accessory Roof Curb Installation Instructions for
additional information as required.
ALTERNATE UNIT SUPPORT — When the curb
cannot be used, support unit with sleepers using unit curb
support area. If sleepers cannot be used, support long
sides of unit with a minimum of 3 equally spaced 4-in. x
4-in. pads on each side.
Step 2 — Rig and Place Unit — Inspect unit for
transportation damage. File any claim with transporta­
tion agency. Do not drop unit, keep upright. Use spreader
bars over unit to prevent sling or cable damage. Rollers
may be used to move unit across a roof Level by using
unit frame as a reference; leveling tolerance is ± 1/16 in.
per linear ft in any direction. See Fig. 3 for additional
information. Unit weight is shown in Table 1.
Four lifting holes are provided in ends of unit base rails
as shown in Fig. 3. Refer to rigging instructions on unit.
POSITIONING — Provide clearance around and above
unit for airflow, safety and service access (Fig. 4).
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
g2°k|l |4 PC111
TabTlbl6b
Catalog No 565-104 Printed in U S A Form 50DP-26SI
ii.n,. Carrier Specified Parts.
Pgi 7-88 Replaces; 50DP-25SI