3
that will not shift or settle. To reduce the possibility of sound
transmission, the foundation slab should not be in contact with
or be an integral part of the building foundation. Care should be
taken to ensure the unit is installed away from noise sensitive
locations such as bedrooms, windows and outdoor living areas.
Ensure the foundation is sufficient to support the unit. A con-
crete slab raised above ground level provides a suitable base.
R
OOFTOP
I
NSTALLATIONS
If it is necessary to install this unit on a roof structure, ensure
the roof structure can support the weight and that proper con-
sideration is given to the weather-tight integrity of the roof. Since
the unit can vibrate during operation, sound vibration transmis-
sion should be considered when installing the unit. Vibration ab-
sorbing pads or springs can be installed between the heat pump
unit legs or frame and the roof mounting assembly to reduce
noise vibration.
E
LECTRICAL
N
OISE
The unit should be well grounded so that potential effects of
electrical noise from the inverter to surrounding equipment can
be minimized.
When selecting an installation location, keep sufficient distance
from the heat pump unit and wiring to radios, personal comput-
ers, stereos, etc., as shown in the following figure.
Circuit
Breaker
(In.)
Radio, TV
60” or m
ore
To Indoor Unit and Thermostat
60” or m
ore
Placement to Minimize Electronic Noise
S
AFE
R
EFRIGERANT
H
ANDLING
While these items will not cover every conceivable situation, they
should serve as a useful guide.
T
O
AVOID
POSSIBLE
INJURY
,
EXPLOSION
OR
DEATH
,
PRACTICE
SAFE
HANDLING
OF
REFRIGERANTS
.
WARNING
T
O
AVOID
POSSIBLE
EXPLOSION
,
USE
ONLY
RETURNABLE
(
NOT
DISPOSABLE
)
SERVICE
CYLINDERS
WHEN
REMOVING
REFRIGERANT
FROM
A
SYSTEM
.
• E
NSURE
THE
CYLINDER
IS
FREE
OF
DAMAGE
WHICH
COULD
LEAD
TO
A
LEAK
OR
EXPLOSION
.
• E
NSURE
THE
HYDROSTATIC
TEST
DATE
DOES
NOT
EXCEED
5
YEARS
.
• E
NSURE
THE
PRESSURE
RATING
MEETS
OR
EXCEEDS
400
PSIG
.
W
HEN
IN
DOUBT
,
DO
NOT
USE
CYLINDER
.
WARNING
R
EFRIGERANTS
ARE
HEAVIER
THAN
AIR
. T
HEY
CAN
“
PUSH
OUT
”
THE
OXYGEN
IN
YOUR
LUNGS
OR
IN
ANY
ENCLOSED
SPACE
. T
O
AVOID
POSSIBLE
DIFFICULTY
IN
BREATHING
OR
DEATH
:
• N
EVER
PURGE
REFRIGERANT
INTO
AN
ENCLOSED
ROOM
OR
SPACE
. B
Y
LAW
,
ALL
REFRIGERANTS
MUST
BE
RECLAIMED
.
• I
F
AN
INDOOR
LEAK
IS
SUSPECTED
,
THOROUGHLY
VENTILATE
THE
AREA
BEFORE
BEGINNING
WORK
.
• L
IQUID
REFRIGERANT
CAN
BE
VERY
COLD
. T
O
AVOID
POSSIBLE
FROST
BITE
OR
BLINDNESS
,
AVOID
CONTACT
AND
WEAR
GLOVES
AND
GOGGLES
. I
F
LIQUID
REFRIGERANT
DOES
CONTACT
YOUR
SKIN
OR
EYES
,
SEEK
MEDICAL
HELP
IMMEDIATELY
.
• A
LWAYS
FOLLOW
EPA
REGULATIONS
. N
EVER
BURN
REFRIGERANT
,
AS
P
OISONOUS
GAS
WILL
BE
PRODUCED
.
WARNING
T
O
AVOID
POSSIBLE
EXPLOSION
:
•N
EVER
APPLY
FLAME
OR
STEAM
TO
A
REFRIGERANT
CYLINDER
. I
F
YOU
MUST
HEAT
A
CYLINDER
FOR
FASTER
CHARGING
,
PARTIALLY
IMMERSE
IT
IN
WARM
WATER
.
•N
EVER
FILL
A
CYLINDER
MORE
THAN
80%
FULL
OF
LIQUID
REFRIGERANT
.
•N
EVER
ADD
ANYTHING
OTHER
THAN
R-410A
TO
A
RETURNABLE
R-410A
CYLINDER
. T
HE
SERVICE
EQUIPMENT
USED
MUST
BE
LISTED
OR
CERTIFIED
FOR
THE
TYPE
OF
REFRIGERANT
USE
.
•S
TORE
CYLINDERS
IN
A
COOL
,
DRY
PLACE
. N
EVER
USE
A
CYLINDER
AS
A
PLATFORM
OR
A
ROLLER
.
WARNING
R
EFRIGERANT
L
INES
T
HE
COMPRESSOR
PVE
OIL
FOR
R-410A
UNITS
IS
EXTREMELY
SUSCEPTIBLE
TO
MOISTURE
ABSORPTION
AND
COULD
CAUSE
COMPRESSOR
FAILURE
. D
O
NOT
LEAVE
SYSTEM
OPEN
TO
ATMOSPHERE
ANY
LONGER
THAN
NECESSARY
FOR
INSTALLATION
.
CAUTION
Use only refrigerant grade (dehydrated and sealed) copper tubing
to connect the heat pump unit with the indoor unit. After cutting
the tubing, install plugs to keep refrigerant tubing clean and dry
prior to and during installation. Tubing should always be cut
square keeping ends round and free from burrs. Clean the tubing
to prevent contamination. The liquid line must be insulated if
more than 50 ft. of liquid line will pass through an area that may
reach temperatures of 30 °F or higher than ambient in cooling
