Carrier WeatherMaster Puron 48HC D17, Service And Maintenance Instructions, Page: 6 / 100

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call for the second stage of cooling is required, the SAV system
will allow the design airflow rate for the unit established
(100%). During the heating mode, the SAV system will allow
total design airflow rate (100%) operation. During ventilation
mode, the SAV system will operate the fan motor at 2 /
3
speed.
Identifying Factory Option
This supplement only applies to units that meet the criteria de-
tailed in Table 1. If the unit does not meet that criteria, discard
this document.
NOTE: See Fig. 9 for an example of typical Model Number
Nomenclature.
Unit Installation with SAV Option
48HC ROOFTOP
Refer to the base unit installation instructions for standard re-
quired operating and service clearances.
NOTE: The Remote VFD Keypad is a field-installed option. It is
not included as part of the factory-installed VFD option. See Vari-
able Frequency Drive (VFD) Installation, Setup and Trouble-
shooting Supplement for wiring schematics, performance charts,
and configuration. See Fig. 8 for location of the VFD as mounted
on the various 48HC models.
Fig. 8 — VFD Location for 48HC 17-28 Units
Fig. 9 — Model Number Nomenclature Example for 48HC Series
Table 1 — Model Size/VFD Option Indicator
MODEL/SIZES
POSITION IN
MODEL NUMBER
VFD FIOP
INDICATOR
48HC 17-28
17 G, J
VARIABLE
FREQUENCY
DRIVE (VFD)
4 8 H C D D 2 4 A 2 A 6 - 0 A 0 G 0
Product Type
Product Series
Cooling Tons
1
Example:
Position: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Refrig. Systems Options
Heat Options
Sensor Options
Indoor Fan Options
Coil Options (RTPF) (Outdoor - Indoor - Hail Guard)
Voltage
Design Revision
Base Unit Controls
Intake / Exhaust Options
Service Options
Factory Assigned
Electrical Options
A = None
C = Non-Fused Disconnect
D = Thru-The-Base Connections
F = Non-Fused Disconnect and
Thru-The-Base
Connections
G = Two-Speed Blower
J = Non-Fused Disconnect and
Two-Speed
Blower
K = Through the basepan electrical
and Two-Speed Blower
M = non-Fused Disconnect and
Through the basepan electrical
and Two-Speed Blower
Enter Unit’s
Model Number:
THIS UNIT’S MODEL NUMBER