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I
i
ELECTRICAL
I
C@DES
AND ORDINANCES
Install a conduit of the correct size
la
carry the two
This package Iseat pump
unit
must h iPlsblIed to
m n -
p o ~ e ~ t t p p l y
wires and a ground wire. If heaters
are
go, ,
with
local
and ~
~
t
i
~
~
~
l
~ l ~ t ~ i ~ l
to be instaliled in the unit, a separate circuit
(two
con-
@
, & , .
duceors and a ground)
must
be rran
lo
the circrrit
The? w i t must alm
be iinsblled in accordan= wit11
breaker ba~trd terminals and the other ground terminal..
See picture
an
page 25 far the optional controls loca-
regulations of the National Board of Fire Undewrikrs.
tion, Refer to instaliadon
for the heater(s)
Authorities having jurisdiction should br mnsulted
in
regards to
installation
of
the electrical
&fore insbliatian is made. T h e air duct distribution
supply.
syslPxn mmt also be
i n s b l l d
in accordance with
s b n -
dards of the National Bmrd of Fire Undewriters; refer
L o InshIIation of Air Conditioning, warm Air Heating
and Vctntilzting S y s k m s Pmphleb.
Ail
kvlring
to elrctricaily connect the trnir
tlltlst
con-
fc~rm to the Natior~al Electrical Code and all local
exisring codes and ordinances. Wiring diagrams arc
ftlilt-nrshed wrth each unit which illustrzitcs the internal
ulring and 5rrppiementary electric Ireat. They arc
I o -
catrif on the unit. control panel and cabinet door.
MOTE: A ground wire must be conneted to
the
ground tern-n~inat
of
the
mil
control panel alnd routed
lo a definite grourld.
Reinuve the motr~~ting screws and cover plate fronl
control panel to gain access to the circuit breaker
switch pressure-tight unit terminal connectors on
sillgie phase units,
Tbe above picti1r.i: illustrates the location of the three
phase power skrpply connections for the
unit
and the
heaters. Three w w e r supply wires must be routed to
the unit and a ground wire. Remove tile cover plate as
shown in the picture at the left to gain access to the
ground teminal(s),
Re-install cover plate with sheet metal screws after
both ground wires have been installed.
Refer to page R when
alumii~rrm
conductor wires will
he 18sed.
UldlM210V TRANSFORMER
The
trmsforxner in the
unit
control panel
is
fsbricatrhd
lo
allow
its umge on
208V
or
230V
Dual voltage oyxr-
ation is amomplished
by
changing the electrical c01-r-
nmtions on the primary
side
of the transformclr Refer
Lo
the
-mil
wiring diagram for proper transformer con-
neclio~ls for either
2C28V
or
230V
operation The trans-
forxner
is
facbrv connected
liar 2SOV
operation.
The
transforlmer has an
internal
r
one tirne) fuse Xf
lhcre
is
d i r ~ x t slzort &tween contml wires C
and
R tho fuse
in
the transformer could open
. . the
transformer
will
have to
bc
replaced
to
regain norrnal rawration after
the short has k e n elirnix~ateb.
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