User Interface; Operating Range - Carrier 40KMC Installation Instructions Manual

Refrigerant Charge
The 38HDF and 38ORF units can be matched with multiple
outdoor units and thus additional charge might be required when
matched with the 4OKMC or 40KMO units.
Table 6 — Additional Charge
Additional Charge Ib (kg)
Unit Size 38HDF 38QRF
018 0 0
024 1.2 (0.55) 0
030 3.0 (1.40) 1.8 (0.82)
036 0.8 (0.36) 0
Note:The above additional charge is required amount for line lengths up to
25 ft (7.6 m). For line lengths exceeding 25 ft (7.6 m), additional charge will
be required. Refer to the Duct Free Splits Long Line Guide.
Metering Device
The metering device(s) for these systems is a type B Accurator
installed with the outdoor unit. One Accurator is required for the
cooling only system and two are required for the heat pump
systems. The Accurators are supplied with the outdoor unit.
However, since the same outdoor unit can be matched with
multiple indoor units, the correct Accurator must be selected. Refer
to Table 7 for the correct Accurator size.
Table 7 — Accurator Sizes
Control Wiring
Thermostat wires should be used for control wiring between the
indoor and outdoor units. A two conductor cable is required for
the cooling only units and a seven conductor cable is required on
heat pumps. 18 AWG is recommended for any length up to 50 ft
(15.2 m). 16 AWG is recommended for lengths between 50 and
200 ft (15.2 and 61.0 m).
User Interface
For 38HDF and 38QRF units matched with 40KMC and 40KMQ
units, the following accessories are available
¢ Wall mounted control. Up to 6 units can be daisy chained and
controlled by one wired control.
¢ Zone manager capable of controlling up to 32 units divided up
to 8 different zones.
¢ Wireless remote control.
NOTE: Units are factory ready for wall mounted wired
controls. See User Interface Installation section in this
document.
Operating Range
Ensure that the system operates within the application guidelines
shown in the following tables.
Cooling Operating Range
System T si Cooling Heating Maximum Minimum
ystem Type 126 Accurator Accurator DB°F CC) | WB°F(CC) | DB°FCC) | WB°F(CC)
018 49 = Outdoor
cooling Only 024 57 = Unit 125 (51.7) -- 55 (12.8) --
030 61 - Indoor
. 90 (32.2 74 (23.3 62 (17.0 56 (13
036 74 = Unit (32.2) (23.3) (17.0) (13)
018 51 46
Heat Pumps 024 55 53 Heating Operating Range
030 63 55 7 +
036 70 a3 Maximum Minimum
DB°FCC) | WB°F(°C) | DB°F(°C) | WB°F(°C)
' ' ' Outdoor | 75 (28.9 87 (19.4 17 (-8.3 --
Power and Connecting Cables - Field Supplied Unit (28.8) (18.4) (~8.3)
Power: indoor 81 (27.2) —- 62 (17.0) —-
¢ The indoor and outdoor units require a dedicated power supply.
¢ Consult local building codes, NEC (National Electric Code) or Accessories
CEC (Canadian Electric Code) for any special requirements.
¢ Use Table 8 for the electrical requirements for the outdoor units
and Table 9 for the indoor units to correctly size the cables and
disconnect switches.
Table 8 - 38HDF / QRF Electrical Requirements
38HDF 38QRF
Unit Voltage Min Ckt Amps/ Min Ckt Amps/
Size Fuse HACR Bkr Fuse HACR Bkr
Amps Amps
018 208/230 —1-60 12.1/20 12.1/20
024 208/230—1-60 16.8/25 16.8/25
030 208/230 —1-60 18.4/30 18.4/30
035/36 208/230—1-60 23.8/40 23.3/35
035/36 208/230-3-60 18.0/30 14.5/20
035/36 460—-3-—60 8.3/15 87/15
Table 9 - 40KMC / KMQ Electrical Requirements
40KMC 40KMQ
Unit Voltage Min Ckt Amps/ Min Ckt Amps/
Size Fuse HACR Bkr Fuse HACR Bkr
Amps Amps
018 208/230 —1-60 0.83/15 16.3/20
024 208/230—1-60 O.7/15 16.3/20
030 208/230 —1-60 1.3/15 16.9/20
036 208/230 —1-60 1.3/15 16.9/20
An extensive list of field installed accessories is available for both
indoor and outdoor units. Identify what accessories, if any, are
required for the application at hand and consult the separate
installation instructions for the accessories. Some of the
accessories, especially on the indoor units, can be installed much
easier if planned ahead.