Carrier 40QA Installation, Start-Up And Service Instructions Manual page 2

Table 1 — Acceptable System Combinations for Indoor and Outdoor Units
OUTDOOR UNIT
Type
Cooling Only
Cooling Only
Multi-Split*
Heat Pump
*Multi-split systems can accommodate up to 4 fan coil units of vari-
ous types with one condensing unit. The combinations listed in this
table are those combinations which use only ceiling-suspended units
(not combined with any other type of fan coil unit). Refer to system
presale literature or Price Pages for more details on other system
combinations.
†Units must be field reconfigured for 1
tion. See Before Installation section on page 3 for details.
Be sure unit will be operated within the application guide-
lines shown in Table 2. When installing the 38QRC or HDC
units, note that for cooling operation when the outdoor-air
temperature is below 55 F, the accessory low ambient or win-
ter start kit will be required. Systems using 38HDS units can
operate down to 40 F outdoor-air temperature as shipped from
the factory. If operation at outdoor ambients between 40 F
and −20 F is desired, an accessory winter start kit will be
required for the 38HDS unit.
To install this system, you will need:
• 1 (or more)* 40QAB or 40QAE fan coil unit(s) with stand-
ard remote thermostat
• 1 38HDC, HDS, or QRC outdoor unit
• 1 low ambient kit or 1 winter start kit (if required for your
application)
• 1 power ventilation kit (if required for your application)
• 1 condensate pump kit (if required for your application)
*More than 1 fan coil unit may be used with the 38HDS
multi-split units. Refer to 38HDS unit Price Pages for com-
plete details.
NOTE: Refrigerant pipe, drain pipe, wire, etc., are also re-
quired to install unit and are field-supplied.
Be sure you have the required parts before beginning instal-
lation. The 40QA unit utilizes a standard 24 v control sys-
tem (see Tables 3A and 3B) for ultimate flexibility while de-
livering optimal levels of comfort and efficiency. Be sure to
follow these instructions carefully to obtain proper function-
ing of the unit.
Model Number 38
HDC018
HDC024
HDC030
HDC036
HDC048
HDC060
HDC018
HDC024
HDC030
HDC036
HDC048
HDC060
HDS024
HDS048
HDS024
HDS048
QRC018
QRC024
QRC030
QRC036
QRC048
QRC060
1 ⁄ ton (18,000 Btuh) opera-
2
INDOOR UNIT
Type
Cooling Only
Heat Pump
Cooling Only
Heat Pump
Heat Pump
**One circuit (2 units) unit must be field reconfigured for 1
(18,000 Btuh) operation. See Before Installation section on page 3
for details.
NOTES:
1. If your particular application requires a heat pump outdoor unit
matched with a cooling-only fan coil unit, contact your local rep-
resentative for more details.
2. Numbers in ( ) indicate quantities when there is more than one fan
coil unit in the system.
Table 2 — Application Range
Maximum
Indoor Outdoor
95 F DB 125 F DB
71 F WB
HEATING (Heat Pump Systems Only)
Maximum
Indoor Outdoor
80 F DB 75 F DB
71 F WB 65 F WB
LEGEND
DB — Dry Bulb
WB — Wet Bulb
*This value is for 38HDC, QRC systems. The 38HDC or QRC unit
may be equipped with an accessory low-ambient control or winter
start kit that will allow operation down to
†This value is for 38HDS systems. The 38HDS unit may be equipped
with an accessory winter start kit that will allow operation down to
−20 F.
2
Model Number 40QA
B024
B024
B036
B036
B048
B060
E024
E024
E036
E036
E048
E060
(2) B024†
(4) B024†
(3) B024**
(2) B024
(2) E024†
(4) E024†
(3) E024**
(2) E024
E024
E024
E036
E036
E048
E060
COOLING
Minimum
Indoor Outdoor
67 F DB 55 F DB*
57 F WB 40 F DB†
Minimum
Indoor Outdoor
55 F DB 20 F DB
20 F.
⁄ ton
1
2