Specifications
Table 1 -- System Combinations for Indoor and
Outdoor Units
SYSTEM INDOOR UNIT OUTDOOR UNIT
40QNB018 38HDC, HDL018
40QNB024 38HDL018, 38HDC,HDL024
Cooling Only 40QNB018 (2) 38HDS024*
Systems 619ENX0180E0 538ANX, JNX018
619ENX0240E0 538JNX018, 538ANX,JNX024
(2) 619ENX0180E0 538SNX024
40QNH018 38BK018
Heat Pump 40QNH024 38BK024
Systems 619ENX0180H0 538DNX018
619ENX0240H0 538DNX024
*Multi-split systems can accommodate fan coil units of various types
with one condensing unit. The combinations listed in this table are
those which use only high-wall units (not in combination with any
other type of fan coil unit). Refer to system presale literature or
Price Pages for more details.
NOTE: Only match systems as shown in this table.
INSTALLATION
Refer to Table 1 to make sure the correct indoor unit(s) is
installed with the correct outdoor unit.
Installation instructions for the tan coil units are contained
in this manual. Reth to this manual for proper installation of
the complete system. Note that the outdoor units are shipped
with installation and service instructions for basic installation
of the outdoor section. Be sure to make the modifications in
Make Connections to the Outdoor Unit section on page 13 of
this literature, so that the outdoor unit will operate properly
with the control system. Be sure the unit will be operated with-
in the application guidelines shown in Table 2. When installing
the outdoor unit, note that for cooling operation below 55 F, it
is necessary to equip the outdoor unit with the low ambient
control accessory. The low ambient control is standard on
ruuhi-split units.
Refer to Table 3 for all recolrnnended accessories when
installing low ambient control.
To install this system, you will need:
• Indoor t;an coil sections* with standard wireless remote
controller
• Outdoor condensing unit
• A low-ambient or winter start kit (if required t\_r your
application)
*More than one tan coil unit may be used with the muhi-split
unit. Refer to ruuhi-sptit system Price Pages for full details.
NOTE: Field-supplied refrigerant pipe, drain pipe, wire, etc.,
are also required to install unit.
Be sure you have the required parts betbre beginning instal-
lation. The indoor section uses a microprocessor control sys-
tem to deliver optimum comfort and efficiency. Be sure to fol-
low these instructions carefully to obtain proper functioning of
the unit.
Step 1 -- Complete Pre-lnstallation Checks
UNPACK UNIT Store the unit in the original packa_ng
until it is moved to the final site for installation. When remov-
ing the unit tiom the carton, lift by its 4 comers. Also, note that
there is a plastic bag containing mounting scaews taped to the
ruounting bracket.
INSPECT SHIPMENT tYpon receipt of shipment check
the unit (Fig. 1) for dmnage. Forward claim papers directly to
the transportation company. Manuthcturer is not responsible
for damage incurred in transit.
Table 2 -- Application Ranges
COOLING MODE
Maximum Minimum
Indoor Outdoor Indoor Outdoor
Unit Unit Unit Unit
95 F DB 67 F DB 55 F DB*
71 FWB 115FDB 57FWB 0°FDB1-
HEATING MODE
Maximum Minimum
Indoor Outdoor Indoor Outdoor
Unit Unit Unit Unit
80 F DB 75 F DB 55 F DB 0° F DB
71 F WB 65 F WB
LEGEND
DB -- Dry Bulb
WB -- Wet Bulb
*Single zone systems.
1-Multi-zone systems.
NOTE: Unit may be equipped with a low-ambient control or winter
start kit that will allow operation down to -20 F.
Check all items. See Table 4. If any item is missing notii_
your distributor. To prevent loss or damage, leave all parts in
their original packages until installation.
Step 2 -- Select Location -- Consult local building
codes and NEC for special installation requirements.
There are several ways to install the unit for different types
of wall construction. These instructions do not cover all instal-
lation methods. As a typical installation, these instructions
focus primarily on mounting the unit to wall studs in new con-
struction. See Fig. 2 for unit dimensions and Fig. 3 for required
clearances. Plan your installation carefully before you
begin. Listed below are some guidelines to follow when deter-
ruining a location for the unit.
1. Place the unit so it faces the nonnat location of room
occupants.
2. Allow sufficient space for airflow clearance, wiring,
reliigerant piping, and unit servicing. See Fig. 2 and 3.
3. Select walls that are:
a. Strong enough to support the unit's weight.
b. Accessible to convenient condensate drainage.
c. Free of obstacles that may block air circulation to
the fan coils.
d. Outside walls (if possible) to make piping easier.
Table 3 -- Recommended Accessories for Low Ambient Control
UNIT LOW AMBIENT CRANKCASE WINTER ISOLATION WIND BAFFLE
CONTROL HEATER START KIT RELAY
38BK, 538BNX 53DS-900---60 -- KAAWS0101AAA KHAIR0101AAA 53DS-900---070
38HDC, 538ANX 53DS-900---60 KAACH 1201AAA* KAAWS0101AAA -- 53DS-900---070
38HDL, 538JNX 53DS-900---60 -- KAAWS0101AAA -- 53DS-900---070
*Not required for 38HDC018.