1212
WARNING
refrIgerant under preSSure!
•
do not oVercharge SyStem wIth refrIgerant.
•do not operate unIt In a Vacuum or at negatIVe preSSure.
f
aIlure to follow proper procedureS may cauSe property dam-
age, perSonal Injury or death.
CAUTION
operatIng the compreSSor wIth the SuctIon ValVe cloSed wIll
cauSe SerIouS compreSSor damage - Such damage IS not coVered
By our warrantIeS.
CAUTION
uSe refrIgerant certIfIed to ahrI StandardS. uSed refrIgerant
may cauSe compreSSor damage, and IS not coVered under the
warranty. moSt portaBle machIneS cannot clean uSed refrIger-
ant to meet ahrI StandardS.
Start-up procedure detaIl
Heat pump liquid and suction valves are closed to contain
the charge within the unit. The unit is shipped with the valve
stems closed and caps installed. Do not open valves until
the indoor unit and line set is evacuated.
CAUTION
prolonged operatIon at SuctIon preSSureS leSS than 20 pSIg
for more than 5 SecondS wIll reSult In oVerheatIng of the com-
preSSor and may cauSe permanent damage to It.
1. Connect the vacuum pump with 250 micron capability
to the service valves.
2. Evacuate the system to 500 microns or less using
suction and liquid service valves. Using both valves
is necessary.
3. Close pump valve and hold vacuum for 10 minutes.
Typically pressure will rise during this period.
• If the pressure rises to 500 microns or less and
remains steady the system is considered leak-free;
proceed to start-up.
• If pressure rises above 500 microns moisture and/
or noncondensibles may be present or the system
may have a small leak. Return to step 2: If the same
result is encountered check for leaks as previously
indicated and repair as necessary then repeat
evacuation.
electrIcal connectIonS
WARNING
HIGH VOLTAGE!
dISconnect all power Before SerVIcIng.
m
ultIple power SourceS may Be preSent. faIlure
to do So may cauSe property damage, perSonal
Injury or death due to electrIc Shock. wIrIng muSt
conform wIth nec or cec and all local codeS.
u
nderSIzed wIreS could cauSe poor equIpment
performance, equIpment damage or fIre.
WARNING
to aVoId the rISk of fIre or equIpment damage, uSe copper
conductorS.
CAUTION
groundIng requIred!
alwayS InSpect and uSe proper SerVIce toolS. lack of InSpec-
tIon or Improper toolS may cauSe equIpment damage or perSonal
Injury. all dISconnected groundIng deVIceS muSt Be recon-
nected Before InStallIng or SerVIcIng. multIple componentS of
thIS unIt may conduct electrIcal current; theSe are grounded.
I
f SerVIcIng the unIt, any dISconnectIon of groundIng wIreS,
ScrewS, StrapS, clIpS, nutS or waSherS uSed to complete the
ground muSt Be returned to theIr orIgInal poSItIon and prop-
erly faStened.
•neVer InStall a phaSe-adVancIng capacItor. aS thIS unIt IS
equIpped wIth an InVerter, InStallIng a phaSe-adVancIng capacI-
tor wIll not only deterIorate power factor ImproVement ef-
fect, But alSo may cauSe capacItor aBnormal heatIng accIdent
due to hIgh-frequency waVeS.
•do not change the SettIng of the protectIon deVIceS. If the
preSSure SwItch, thermal SwItch, or other protectIon deVIce
IS Shorted and operated forcIBly, or partS other than thoSe
SpecIfIed By daIkIn are uSed, fIre or exploSIon could reSult.
•do not connect the ground wIre to SuctIon lIne, Sewage pIpeS,
lIghtnIng rodS, or telephone ground wIreS.
NOTICE
The heat pump rating plate lists pertinent electrical data nec-
essary for proper electrical service and overcurrent protection.
Wires should be sized to limit voltage drop to 2% (max.) from
the main breaker or fuse panel to the heat pump. Refer the
NEC, CEC, and all local codes to determine the correct wire
gauge and length.
Local codes often require a disconnect switch located near
the unit; do not install the switch on the unit.
oVercurrent protectIon
The inverter control system software provides sufcient time
delay to protect from overcurrent conditions and permit the
compressor and fan motors to adjust their rotational speed.
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