2
NOTE is used to highlight suggestions which
will
result in
enhanced installation, reliability, or operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
Before performing service or maintenance operations
on unit, always turn off main power switch to unit and
install lock(s) and lockout tag(s). Unit may have more
than one power switch. Ensure electrical service to
rooftop unit agrees with voltage an amperage listed on
the unit rating plate.
!
WARNING
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing, safety
glasses and gloves when handling parts and servicing
air conditioning equipment.
CAUTION
!
GENERAL
Identifying Factory Option
NOTE
: This supplement only applies to units that meet
the criteria detailed in Table 1. If the unit does not meet
that criteria, discard this document.
Table 1 – Model--Size / EconoMi$er X Option Indicator
Model / Sizes
Position in
Model Number
EconoMi$er FIOP
Indicator
48/50TC / 08---16
15
U or W
48/50TC / 17---30
15
U, V, W or X
50TCQ / 08---14
15
U or W
50TCQ / 17---24
15
U, V, W or X
48/50HC / 08---14
15
U or W
48/50HC / 17---28
15
U, V, W or X
50HCQ / 08---12
15
U or W
NOTE
: See Fig. 1 for an example of typical Model
Number Nomenclature.
In addition to criteria in Table 1, all units equipped with a
factory--installed EconoMi$er X display a 6 in the 14
th
position of the model number indicating the low leak
economizer controller. These units also display a G in the
17
th
position of the model number to indicate that the unit
is equipped with the factory--installed VFD (Variable
Frequency Drive) option for 2--speed indoor fan control.
The VFD option is required for units equipped with
EconoMi$er X. For detailed information on the VFD see
the Variable Frequency Drive (VFD) Installation, Setup &
Troubleshooting Supplement.
4
8
H
C
D
D
2
4
A
3
A
5
-
6
U
0
G
0
Product Type
Product Series
1
Example:
Position:
2
3
4
5
6
7
8
9
10 11 12 13
14 15
16
17
18
Sensor Options
Indoor Fan Options & Air Flow Configuraitons
Coil Options (RTPF) (Outdoor - Indoor - Hail Guard)
Electrical Options
G = 2-Speed Indoor Fan (VFD)
Controller
Heat Options
Refrig. Systems Options
Cooling Tons
Packaging
Voltage
Design Revision
Base Unit Controls
0 = Base Electromechanical Controls
1 = PremierLink Controller
2 = RTU Open Multi-Protocol Controller
6 = Electromechanical Controls for Low Leak
Economizer
Only
Service Options
Intake / Exhaust Options
A = None
B = Temp Economizer w/ Baro Relief
F = Enthalpy Econoizer w/ Baro Relief
K = 2 Position Damper
U = Temp Low Leak Economizer w/ Baro Relief
V = Temp Low Leak Economizer w/ PE (cent)
W = Enthalpy Low Leak Economizer
w/ Baro Relief
X = Enthalpy Low Leak Economizer w/ PE (cent)
C11547
Fig. 1 -- Model Number Nomenclature Example
LLECO
N
--
01
S
I
