Carrier 38QE - Manual

KEATING A COOLING
38QE/40QE
Advanced Technology
Heat Pump System
Installation Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
GENERAL OPERATION AND USAGE
APPLICATION LIMITATIONS
ORIENTATION AND LOCATION OF EQUIPMENT
Step 1 Inspect equipment and job site
Step 2 Install outdoor fan coil section (38QE924 or
38QE936)
Step 3 Install indoor compressor section (38QE024 or
38QE036) '
Step 4 Install domestic water heating control box
Step 5 Install domestic water heating tank temperature
fitting
Step 6 Install thermostat
Step 7 Install indoor fan coil (40QE024, 40QE036 or
40QEH036)
(refer to installation instruction supplied with
indoor unit)
Step 8 Install other accessories
PIPING CONNECTIONS
Step 9 Install refrigerant piping
Step 10 Install domestic hot water piping
ELECTRICAL CONNECTIONS
Step 11 Install control and sensor wiring
Step 12 Install thermostat wiring
Step 13 Install power wiring
SYSTEM SET-UP ADJUSTMENTS
Step 14 Inspect Indoor blower speed settings
Step 15 Adjust domestic water heating tank thermostat
settings
Step 16 Configure thermostats
Step 17 Adjust Refrigerant Charge
SAFETY CONSIDERATIONS
Installing and servicing air conditioning equipment can be
hazeurdous due to system refrigerant pressures and electrical
components. This is especially true with variable speed type
equipment, since HIGH VOLTAGE COMPONENTS
REMAIN ENERGIZED AFTER THE UNIT MAIN DIS­
CONNECT IS OPENED!
A DANGER
A high-voltage (300-VDC) circuit remains energized
after the main disconnect is opened. The normal capaci­
tive discharge time is 10 minutes, but this period may
be extended indefinitely by component failure. Before
servicing components within the compressor section
power box, always check with a DC voltmeter across
the D.C. Capacitor. Electrical shock can cause personal
injury or death.
For the above reasons, installation and servicing MUST BE
conducted only by a Carrier installer/dealer specifically
trained to service variable speed equipment. Improper
installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock or other
conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency or your
distributor or branch for information or assistance. The
qualified installer or agency must use factory authorized
kits or accessories when modifying this product. Refer to
the individual instructions packaged with the kits or acces­
sories when instalhng.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have
fire extinguisher available. Read these instructions thor­
oughly and follow all warnings or cautions attached to<the
unit. Consult local building codes and NEC (National Elec­
trical Code) for special installation requirements.
A WARNING
Before installing or servicing, turn off main power to
indoor and outdoor units. There may be more than one
disconnect switch. Turn off accessory heater power if
apphcable. Electric shock can cause personal injury or
death.
GENERAL OPERATION AND USAGE
The HydroTech 2000 advanced variable speed heat pump
system is designed to provide heating and cooling, as weU
as provide a majority of the year round domestic hot water
requirements. The system is composed of three main sec­
tions, indoor compressor section, outdoor fan cofi. section
and the indoor fan coil section (see Fig. 1). Additionally a
Fig. 1—38QE/40QE Advanced Heat Pump System
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
^ I PC 101 Catalog No. 563-964 Printed in U.S.A. Form 38QE-3SI Pg 1 5-90 Replaces: 38QE-2SI
Tab I5al5a