A high head press
u
re s
w
itch is standard on this
u
nit and pre
v
ents the e
v
aporator coil from
freezing
u
nder lo
w
am
b
ient temperat
u
re. The crankcase compressor heater allo
w
s the
u
nit to start
w
ith an am
b
ient temperat
u
re of 0°F. In applications ha
v
ing fre
qu
ent
v
ol
u
ntary
or in
v
ol
u
ntary po
w
er interr
u
ptions, a Short Cycle Protector is recommended to allo
w
ade
qu
ate time for the internal press
u
res of the Air Conditioner to e
qu
alize
b
efore
restarting.
IMPORTANT NOTE
W
hen the Kooltronic Air Conditioner is properly sized it sho
u
ld operate constantly and
maintain 75ºF to 115ºF enclos
u
re temperat
u
res, depending on am
b
ient temperat
u
res.
VI. Pre-Installation Testin
g
Before mo
u
nting the air conditioner to the enclos
u
re, test for proper operation. This
w
ill
CAUTION
1. Allo
w
the
u
nit to sit in a
u
pright position at a room temperat
u
re of 65°F minim
u
m,
allo
w
ing the system to
w
arm-
u
p partic
u
larly in
w
inter months.
2. Refer to the identification la
b
el form po
w
er re
qu
irements then connect the po
w
er cord
to a properly gro
u
nded and f
u
sed electrical s
u
pply. Lea
v
e the electrical po
w
er off.
3. Ele
v
ate the
u
nit approximately 3” a
b
o
v
e the floor to ens
u
re proper condenser airflo
w
.
Do not
b
lock condenser air inlet on
b
ottom of
u
nit.
4. Heat
u
p sensor
bu
l
b
in e
v
aporator compartment to 90ºF
u
sing a lo
w
temperat
u
re heat
g
u
n, or adj
u
st the thermostat to 55ºF to sim
u
late the need for cooling.
5. T
u
rn electrical po
w
er on.
6.
V
erify that the e
v
aporator
b
lo
w
er fan is r
u
nning.
7. The compressor sho
u
ld start. Units e
qu
ipped
w
ith a Short Cycle Protector ha
v
e a 3-
min
u
te delay from
w
hen the po
w
er is t
u
rned on
u
ntil the compressor
b
egins to operate.
8.
V
erify that the condenser
b
lo
w
er/fan is r
u
nning.
N
ote: the start of the condenser
b
lo
w
er/
fan
w
ill
b
e delayed
u
ntil the system press
u
re rises.
9. Operate the air conditioner for approximately ten (10) min
u
tes. D
u
ring the period no
u
n
u
s
u
al noise or
v
i
b
ration sho
u
ld
b
e e
v
ident. Both the e
v
aporator and condenser fans
or
b
lo
w
ers sho
u
ld
b
e deli
v
ering air thro
u
gh their respecti
v
e discharge ports. The cool
air discharged sho
u
ld
b
e less than 70ºF
w
hen the room temperat
u
re is
b
et
w
een 70ºF
and 80ºF.
10. T
u
rn off the electrical po
w
er so
u
rce, and disconnect the air conditioner from the po
w
er
so
u
rce.
11. If the thermostat
w
as lo
w
ered, adj
u
st the thermostat
b
ack to 75ºF. Fail
u
re to do this
w
ill res
u
lt in coil freezing.
NOTE:
Before shipment all Kooltronic, Inc. Air Conditioners are s
ub
jected to a
performance test.
The Air Conditioner must be standin
g
in its proper mountin
g
position for a
minimum of five (5) minutes prior to testin
g
. Failure to follow this procedure
will cause permanent dama
g
e to the compressor.
The temperature of the returnin
g
air to the air conditioner is displayed on the
exterior panel of the unit. This is considered the maximum temperature within
the enclosure and not the temperature of the air supplied to the enclosure.
To access the thermostat, remove
g
rille and upper panel. The thermostat is located in
the upper corner of the unit. All panels need to be re-installed to continue testin
g
.
v
erify the shipping integrity of the system. Please follo
w
the steps
b
elo
w
prior to installation.
6
