INSTALLATION
THERMAL INSULATION
Factory installed thermal insulation is furnished on all
parts of the Templifier unit as needed to prevent
sweating, to retain thermal efficiency, and to protect
operating personnel from hot surfaces.
Care should be taken not to tear, damage or remove
any of this factory insulation.
All field piping connections to the Templifier should be
insulated by the installer if required by good practice
and personnel safety.
ELECTRICAL
Wiring, fuse and wire size must be in accordance with
information provided in the Electrical Data. Standard
NEMA motor starters require modification to meet
McQuay specifications. Refer to Electrical Data sup-
plied with the unit for details.
IMPORTANT: The voltage of these units should be
within the limitation of plus or minus 10%, and the
voltage unbalance between phases must not exceed
3%. Since a 3% % voltage unbalance will cause an
approximate 25% increase in motor temperature, it is
most important that the unbalance between phases be
at a minimum.
NOTE: Do not make final power connections to the
starter until wiring has been checked and approved by
an authorized McQuay Service Representative. Under
no circumstances should the compressor be brought
up to speed unless proper phase sequence and rotation
have been established. Serious damage may result if
the compressor starts in the wrong direction. Jog the
machine to check rotation using the sight glasses on
the rear motor cover to observe direction.
Power Wiring T**063/079/100/126
Power wiring to the compressor must be in proper
phase sequence. Motor rotation is set up for clockwise
rotation facing motor end cover with phase sequence
of l-2-3. Care should be taken that proper phase
sequence is carried through the starter to the compres-
s o r . W i t h t h e p h a s e s e q u e n c e o f l - 2 - 3 a n d L1
connected to T1 and T6, L2 connected to T2 and T4,
and L3 connected to T3 and T5, rotation is proper. See
diagram in terminal box cover.
Phase sequence can be determined by using GE No.
546703265 phase sequence meter or equal. Before
connecting the starter load leads to the compressor
terminals and while checking the field connection
wiring, the transition timer in the starter should be
adjusted to make the transition in 15 seconds. This
should be reset when the compressor is put on the
line. The timer should be adjusted to actuate (discon-
nect Star winding connection and connect Delta)
when the motor has come up to speed and before any
speed reduction occurs.
CAUTION: Wiring connection to compressor terminal
studs must be made with copper lugs and copper wire.
Power Wiring T**048/050
All T**048/050 units are normally supplied with a
factory wired and mounted star delta starter equipped
with ambient compensated quick trip overloads, fac-
tory set at 1
15%
F.L.A. Wiring, fuse and wire size must
be in accordance with information located in the elec-
trical data supplied with the unit or the McQuay Electri-
cal Data pertaining to your unit.
The power wiring to the compressor starter must be i n
proper phase sequence. See second paragraph under
T**063/079/100/126 Power Wiring.
All units are factory equipped with open transition
starters. Closed transition starters are supplied on a
special order basis. Transition should be set to 15
seconds.
Control Wiring
The control circuit on the McQuay T**063/079/100
and 126 Templifiers is designed for 1 15 volts. Power
should be supplied from a separate circuit and fused at
10 amps. (See Table 2). The control circuit on the
TP048/050 unit is also designed for 115 volts, but
power is provided to the control panel by a .75 or 1
KVA 1 15 volt transformer supplied and mounted in the
starter package.
T A B L E 2 M A X I M U M C O N D U C T O R L E N G T H *
l
Maximum length is distance conductor will traverse between
control power source and the unit control panel. Wire size based
on voltage drop not to exceed 3 percent.
Panel terminal connectors will accommodate wire size up to 10
AWG, larger conductors will require an intermediate junction box.
The disconnect switch should be tagged to prevent
current interruption. SWITCH IS TO REMAIN ON AT
ALL TIMES IN ORDER TO KEEP OIL HEATERS
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Summary of Contents for Templifier
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