8
CAUTION
•do not touch the SwItch wIth wet fIngerS. touchIng a SwItch
wIth wet fIngerS may reSult In electrIc Shock.
•do not allow chIldren to play on or around the unIt or It may
reSult In Injury.
•the heat exchanger fInS are Sharp enough to cut, and may
reSult In Injury If Improperly uSed. to aVoId Injury wear gloVe
or coVer the fInS when workIng around them.
•do not touch the refrIgerant pIpeS durIng and ImmedIately
after operatIon aS the refrIgerant pIpeS may Be hot or cold,
dependIng on the condItIon of the refrIgerant flowIng through
the refrIgerant pIpIng, compreSSor, and other refrIgerant
cycle partS. It may reSult In your handS gettIng BurnS or
froStBIte If you touch the refrIgerant pIpeS. to aVoId Injury,
gIVe the pIpeS tIme to return to normal temperature or, If you
muSt touch them, Be Sure to wear proper gloVeS.
•InSulate SuctIon pIpIng to preVent condenSatIon.
•Be careful when tranSportIng the product.
•take adequate meaSureS to preVent the outdoor unIt from
BeIng uSed aS a Shelter By Small anImalS. Small anImalS mak-
Ing contact wIth electrIcal partS may reSult In malfunctIonS,
Smoke, or fIre. InStruct the cuStomer to keep the area around
the unIt clean.
•If the conVentIonal refrIgerant and refrIgerator oIl are mIxed
In r410a, deterIoratIon wIll reSult.
•thIS heat pump IS an applIance that Should not Be acceSSIBle
to the general puBlIc.
•aS deSIgn preSSure IS 450 pSI (3.1 mpa), the wall thIckneSS
of fIeld-InStalled pIpeS Should Be Selected In accordance wIth
the releVant local, State, and natIonal regulatIonS.
NOTICE
refrIgerant lIneS
CAUTION
the compreSSor pVe oIl for r-410a unItS IS extremely SuS-
ceptIBle to moISture aBSorptIon and could cauSe compreSSor
faIlure. do not leaVe SyStem open to atmoSphere any longer
than neceSSary for InStallatIon.
Use only refrigerant grade (dehydrated and sealed) copper
tubing to connect the heat pump 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
outdoor ambient in cooling mode and/or if the temperature
inside the conditioned space may reach a temperature lower
than ambient in heating mode. Never attach a liquid line to
any uninsulated portion of the suction line.
Do NOT let refrigerant lines come in direct contact with plumb-
ing, ductwork, oor joists, wall studs, oors, and walls. When
running refrigerant lines through a foundation or wall, open-
ings should allow for sound and vibration absorbing material
to be placed or installed between tubing and foundation. Any
gap between foundation or wall and refrigerant lines should
be lled with a pliable silicon-based caulk, RTV or a vibration
damping material. Avoid suspending refrigerant tubing from
joists and studs with rigid wire or straps that would come in
contact with the tubing. Use an insulated or suspension type
hanger. Keep both lines separate and always insulate the
suction line.
Insulation is necessary to prevent condensation from forming
and dropping from the suction line. Insulation tube with 3/8”
min. wall thickness is recommended. In severe conditions
(likely to exceed 86°F and a relative humidity of 80%) 1/2”
insulation may be required. Insulation must be installed in a
manner which protects tubing and connections from damage
and contamination.
Please use a HVAC ushing solvent to clean lineset of any
oil or debris from the existing system.
Cond
Unit
Tons
Allowable line set diameter
Liquid Suction
1/4 3/8 5/8 3/4 7/8 1 1/8
1.5 x x x* x
2 x x* x
2.5 x x* x
3 x x* x
3.5 x x x
4 x x x
5 x x x
x: Allowable combination
*: For marked combinations, if normal ambient opera-
tion temperature is less than 14°F, limit line set length
to 50 ft. max.
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