CONTENTS
Page
SAFETY CONSIDERATIONS ........................1
GENERAL .......................................1
INSTALLATION .................................2-12
I. Step 1 − Complete Pre-Installation Checks .....2
II. Step 2 − Select Location ....................2
III. Step 3 − Mount Mounting Bracket on Wall .....4
IV. Step 4 − Connect Refrigerant Piping ..........5
V. Step 5 − Connect Condensate Drain Line .....10
VI. Step 6 − Make Electrical Connections ........10
VII. Step 7 − Make Connections to Outdoor Unit ..12
VIII. Step 8 − Install Fan Coil Unit Onto Mounting
Bracket ..................................12
START-UP ....................................12-16
I. 619E Control System .......................13
II. Wireless Remote Controllers ................13
III. After Extended Shutdowns ..................13
IV. Seasonal Changeovers .....................13
V. To Turn The Unit On and Off .................13
VI. Adjusting Airflow ..........................13
VII. Operating Mode Memory ....................14
VIII. Automatic Operation (Auto) Mode ............14
IX. Operating Fault Diagnosis ..................14
X. Microprocessor Control Operation ...........14
CLEANING AND MAINTENANCE .................16-18
I. Lubrication ...............................16
II. To Install or Replace Remote Controller
Batteries .................................16
III. To Set the Current Time ....................17
IV. To Remove and Clean or Replace Air Filters ...17
V. To Clean Indoor Unit Front Panel .............17
VI. To Clean Indoor Coil .......................18
VII. To Clean Outdoor Coil (Outdoor Unit) .........18
VIII. Cleaning Condensate Drains ................18
SERVICE .....................................18-20
I. Diagnostic Codes ..........................18
II. System Tests .............................18
III. System Safeties and Interlocks ..............20
TROUBLESHOOTING ...........................20-24
START-UP CHECKLIST ....................CL-1, CL-2
SAFETY CONSIDERATIONS
Installing 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 ser-
vice air-conditioning equipment.
Untrained personnel can 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 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 fire extin-
guisher available. Read these instructions thoroughly. Con-
sult local building codes and National Electrical Code (NEC)
for special installation requirements.
WARNING:
Before installing or servicing system,
always turn off main power to system. There may be
more than one disconnect switch. Turn off indoor fan
coil power if applicable. Electrical shock can cause per-
sonal injury.
GENERAL
The 619E heat pump high wall fan coil units (Fig. 1) come
with supplemental electric heat. If your application requires
heating, heat pump units must be used, both outdoors and
indoors. See Table 1 for recommended system combinations.
Table 1 — System Combinations for Indoor
and Outdoor Units
INDOOR UNIT OUTDOOR UNIT
High Wall Cooling Only Systems*
619ENX018OEO 538ANX018
619ENX024OEO 538ANX024
(2) 619ENX018OEO 538SNX024†
(4) 619ENX018OEO 538SNX048†
(1) 619ENX024OEO, (2) 619ENX018OEO 538SNX048†
(2) 619ENX024OEO 538SNX048†
High Wall Heat Pump Systems**
619ENX018OHO 538DNX018
619ENX024OHO 538DNX024
*Using cooling-only fan coil units.
†Multi-split systems can accommodate up to 4 fan coil units of various
types with one condensing unit. The combinations listed in Table 1 are
those which use only high-wall units (not in combination with any other
type of fan coil unit). Refer to system presale literature for more
details.
**Using heat pump fan coil units.
NOTE: Numbers in ( ) indicate quantities of more than 1.
Fig.1—Typical 619E High Wall Fan Coil Unit
installation, start-up and
service instructions
HIGH WALL FAN COIL UNITS
619E
Sizes 018 and 024
1
1
⁄
2
and 2 Tons
Cancels: II 619E-18-1 II 619E-18-2
6/1/99
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