Section 2 - Installation; Approvals; Limitations; Unit Inspection - Johnson Controls LSWU Manual

FORM 145.05-NOM7
ISSUE DATE: 10/31/2019

APPROVALS

Design certified by ETL for indoor installation only.

LIMITATIONS

The installation of this unit must conform to local
building codes as well as the National Electrical Code
ANSI/NFPA No. 70 – or latest edition.
Refer to Table 2 for voltage limitations and Table 3 for
operating limitations.

TABLE 2 - VOLTAGE LIMITATIONS

UNIT POWER
MINIMUM
SUPPLY
208/230-3-60
460-3-60
575-3-60

TABLE 3 - OPERATING LIMITATIONS

Entering Air DX Coil – Dry
Bulb
Entering Air DX Coil – Wet
Bulb
DX Cooling Coil Airflow
Velocity
Condenser Water Flow
Entering Cond. Water
Temp with Water
Economizer
Entering Cond. Water
Temp W/O Water
Economizer
Entering Cond Water Temp
W/O Condenser Water Cntl
Valve
Steam Heat – Steam
Pressure
Hot Water Heat Entering
Water Temp
If the VAV boxes in the conditioned space
have hydronic heating coils installed, it is
the responsibility of the installing contrac-
tor to take appropriate measures to protect
the hydronic coils against low unit supply
air temperatures that could result in the
freeze up and rupture of the coils.
JOHNSON CONTROLS
SECTION 2 – INSTALLATION
VOLTAGE VARIATIONS
MAXIMUM
VOLTS VOLTS
187 253
415 506
518 632
MINIMUM MAXIMUM
68.0°F 90.0°F
57.0°F 72.0°F
200 600
FPM FPM
2.0 3.0
GPM/TON GPM/TON
50.0°F 90.0°F
55.0°F 90.0°F
60.0°F 90.0°F
5 PSIG 15 PSIG
140.0°F 160.0°F

UNIT INSPECTION

Immediately upon receiving the unit, it should be in-
spected for possible damage which may have occurred
during transit. If damage is evident, it should be noted
on the carrier's freight bill. A written request for in-
spection by the carrier's agent should be made at once.
See Shipping Damage Claims Service Policy (Form
50.15-NM) for more information and details.
To ensure warranty coverage, this equip-
ment must be commissioned and serviced
by an authorized Johnson Controls service
mechanic or a qualified service person
experienced in water cooled self contained
equipment installation. Installation must
comply with all applicable codes, particu-
larly in regard to electrical wiring and
other safety elements such as relief valves,
HP cut-out settings, design working
pressures and ventilation requirements
consistent with the amount and type of
refrigerant charge.
Lethal voltages exist within the control
panels. Before servicing, open and tag all
disconnect switches.

TABLE 4 - LSWU/LSWD/LSWF MINIMUM CFM

STD EVAP HI EFF EVAP
UNIT
(12 FINS
SIZE
PER INCH)
25T 4100
32T 5100
35T 6100
40T 5300
50T 8000
60T 8000
70T 11400
80T 11300
95T 12100
105T 12100
In order for the supply fan air proving switch to close
the unit must achieve the minimum CFM levels listed
in the chart. If the supply fan air proving switch does
not close the unit registers a warning or possibly fault
and shutdown.
SECTION 2 – INSTALLATION
EVAP AND
(17 FINS WATERSIDE
PER INCH) ECONO COIL
3600 3600
4400 4400
5300 5300
5300 5300
8000 8000
8000 8000
9900 9900
11300 11300
12100 12100
12100 12100
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