Carrier 38HDL018-060 User Manual

Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ...................1
INSTALLATION ..............................1-6
Step 1 — Complete Pre-Installation
Checks ....................................1
• UNPACK UNIT
• INSPECT SHIPMENT
• CONSIDER SYSTEM REQUIREMENTS
Step 2 — Rig and Mount Unit .................3
• MOUNTING ON GROUND
• MOUNTING ON ROOF
• RIGGING
Step 3 — Complete Refrigerant Piping
Connections ...............................3
• CHECK ACCURATERt CONTROL
• MAKE PIPING SWEAT CONNECTIONS
• PROVIDE SAFETY RELIEF
Step 4 — Make Electrical Connections ........4
• POWER WIRING
• CONTROL CIRCUIT WIRING
• CONNECTIONS TO DUCT-FREE
FAN COIL UNITS
Step 5 — Accessory Installation ..............4
START-UP ...................................7
SERVICE ...................................7-9
MAINTENANCE .............................10
TROUBLESHOOTING ........................11
SAFETY CONSIDERATIONS
Install and servicing air-conditioning equipment can be haz-
ardous due to system pressure and electrical components. Only
trained and qualified service personnel should install or serv-
ice air-conditioning equipment
Untrained personnel may perform basic maintenance such
as cleaning and replacing filters. All other operations should
be performed by trained service personnel. When working
on air-conditioning equipment, observe safety precautions in
literature, and on tags and labels attached to unit.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have a
fire extinguisher available. Read these instructions thor-
oughly. Consult local building codes and National Electrical
Code (NEC) for special installation requirements.
INSTALLATION
Before installing or servicing system, always turn off
main power to system. There may be more than one dis-
connect switch. Turn off accessory heater power if
applicable. Electrical shock can cause personal injury.
Step 1 — Complete Pre-Installation Checks
UNPACK UNIT — Move unit to final location. Remove car-
ton from unit, being careful not to damage service valves or
grilles.
INSPECT SHIPMENT — File claim with shipping com-
pany if shipment is damaged or incomplete. Check unit name-
plate to ensure unit matches job requirements.
CONSIDER SYSTEM REQUIREMENTS — Consult
local building codes and NEC for special installation
requirements.
Allow sufficient space for airflow clearance, wiring,
refrigerant piping, and servicing unit. See Fig. 1 and 2. Unit
can be mounted on a level pad directly on base legs or
mounted on raised pads at support points. See Fig. 2 for cen-
ter of gravity.
COOLING
Fig. 1 — 38HDL Condensing Unit
38HDL018-060
Light Commercial Condensing Units
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 3a 2a
PC 111 Catalog No. 563-885 Printed in U.S.A. Form 38HDL-2SI Pg 1 1-99 Replaces: 38HDL-1SI

Carrier 38HDL018-060 Specifications

General

Brand	Carrier
Model	38HDL018-060
Category	Air Conditioner
Language	English

Summary

INSTALLATION

Step 1 - Complete Pre-Installation Checks

Review unit unpacking, shipment inspection, and system requirements before installation.

Step 2 - Rig and Mount Unit

Details on safely rigging, mounting units on ground or roof, and securing them.

Step 3 - Complete Refrigerant Piping Connections

Instructions for making refrigerant piping connections, including AccuRater control and safety relief.

Step 4 - Make Electrical Connections

Guidance on making power and control circuit wiring connections, including duct-free fan coil units.

Step 5 - Accessory Installation

Procedures for installing unit accessories prior to system start-up.

START-UP

Preliminary Checks

Verify wiring, power source, and open service valves before starting the unit.

Leak Test

Procedure for performing a pressure leak test on field piping and fan coil.

Evacuate and Dehydrate

Methods for evacuating and dehydrating field piping and fan coil systems.

Charge System

Instructions for adding refrigerant charge to the system, referring to indoor unit specifications.

To Start Unit

Steps to start the unit, including setting the thermostat and checking refrigerant charge.

SERVICE

Outdoor Fan

Information on the outdoor fan assembly mounting and reinforcement.

High-Pressure Relief Valve

Details on the compressor's high-pressure relief valve operation and pressure differential.

Internal Current and Temperature Sensitive Overload

Explanation of the internal overload control, its reset function, and troubleshooting.

Pumpdown Procedure

Step-by-step procedure for pumping down the system to facilitate repairs.

MAINTENANCE

Lubrication

Guidelines for lubricating fan-motor bearings based on environment and usage.

Cleaning Coils

Instructions for cleaning condenser coils annually or as needed, noting debris buildup.

COMPRESSOR

Information on compressor oil charges, replacement, and recommended oils.

TROUBLESHOOTING