Carrier 38HDF018-036 Dimensions and installation guide

38HDF018-036
Duct Free Condensing Units
38HDR018-060
Ducted Condensing Units
Installation, Start-Up and
Service Instructions
CONTENTS
Pa_
SAFETY CONSIDERATIONS ...................... 1
INSTALLATION ................................ I l0
Step 1 -- Complete Pre-lnstallation Checks ...... I
• IfNPACK UNIT
• INSPECT SHIPMLNT
•CONSII)I R SYSTLM REQUIREMI NTS
• MVI'CHINGTHI CONI)INSINGUNIT'I_)AN
INDOOR UNIT
Step 2 -- Rig and Mount Unit ..................... 3
• Me! ;NTINC, ON GROUNI)
•MOIINTINGONROOF
• RIGGING
Step 3-- Complete Refrigerant Piping
Connections ................................... 3
• CHI('KACC!JR,VI'IH<CONTI<GI,
•FII:I'ERH<IEI _.
• MAKEPIPINGS\\EXI'('ONNIMTOI_S
• PROVII)I SAFETY P.LI,Ilff _
Step 4 -- Make Electrical Connections ........... 6
• L'ONTROL ( *II_( [fiT WII<ING
•POWI:I_ WIRING
• CONNECTIONS T() I)UCTFPd I FAN COII, UNITS
START-UP ....................................... 1l
SERVICE ..................................... II 14
MAINTENANCE ................................. 14
TROUBLESHOOTING .......................... 14.15
INSTALLATION
Step 1-- Complete Pre-lnstallation Checks
ITNPACK !INIT (Sue Fig Ii Move the' unit Io lina] 1o_1
[ioll R<'move ufli[ horn _:lr[t_ll, buillg calefil[ rlol 10 d_llllag_'
selvice valves and gdik's
SAFETY CONSIDERATIONS
Ins{!lling and servicing air conditioning equipmenl can I_
]l_lz_lfdotls dtl_ {t) Sys[el31 pl_2ss[Ife _Ii_d _[ec[lica[ _)131polluil[s
Only tmhl_l and qualified service i_rsonnel shoukl insla[] or
service air conditionhlg equipmenl
Ull[r;til_ed i_rsofll_el c_n _rforl_l basic mail_l_llaflce, such
as cleaning and replacing lillers All olher operations should be
perk)filial by train_i service persollll_2] Wll_ll WOJkill_2oil air
condilioning equipment, observe sa_ly p_cautions hi ]ilera
tuJ_, lags. and ]abels atlached Io unil
Fol]<>_ a[] sa_{y codes¸ Wear sa_ly glasses and work
gloves U_ quenching clolh lbr _azing operations¸ Have life
exthlguisher available¸ Re_l Ihese ins_ruc{ions _oroughly_
Consuil k_al building codes and tile Naliona] Elec{rica] Code
/NI_:) I_>l¸s_._cial insta[]alion requh_menls
Beh_rc inslalling o_ servicing syslem, always mm off main
power [o sysl_ll_ There may be i_loJ_ [hall olle digcollll_c[
_wilch Turn offaccessory healer power if applicable L]ec
hica] shock carl catlse seli<)lls _1 solla[ illith y
Fig. 1 --38HDF,HDR Unit
INSPECT SHIPMLNT File a claim wilh the shipping
company if shipmcnl is d_lmag_d or incomplete Check uni_
flamep]a[_2 [o ellsufe_ulli[ ii_a[ches job fe_quirelll_2IllS
CONSIDER SYSTEM REQUIREMENTS Consult local
building c<×les and NEC fi_rspecial hlsla][alion requiJ_ments
Allow su_icienl space l_>rairflow clearance, wiring, _ffig
eran_ piping, and servicing unit¸ See Fig 2
I,oc_ll_ tlfli[ so [ha[ colld_211serairflow is tll_l_2sIricRxi<>l__)[h
sides¸ Rear to I_g 2
Unil may be moun{ed on a level pad directly on base legs or
mounled on raised pads al sup_>l_ points See Fig 2 I_>l¸cenler
of gmvily
M_VI'CHING THE CONI)ENSING UNIT TO AN
INDOOR UNIT The 38HI)EHDR unit_ can be match_l _o
a _rresponding ind<×)r uni_ The 38HDI_I18 036 units can be
ma{ched with an in cei]hlg casse_ or high wail indoor unJl
llle 38HI)R unil can be malched with underceiiing and resi
dcntia] l_n coils¸ Re_l ¸ to separate hl(k×)r uni_ ]itemltne Ibr
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book _ 4C_talog NO 02-38HDOOO1 S[ Printed in US A Form 38HD_,SI Pg _ 1-o6 Replace_: 38NDC 3SI

UNIT MODELS CHAG_IG
38HDF 38HDR _IZE A B C D
Unil _ze Unit _ze {Refere_el
t_18 t_18 0 2_11½_ 3_01_/1_ _ 1_2_/1__ 1_ _
/638_21 /938_21 /369_9) /40&4)
924,930 924 O,6 2'71/6 _' 3,_1_/16 _, 1,2_/16 _, 1,4 _
/790_6) /9382) /369_9) /406_4/
3, 1_/1__, 3, 8_1_, 1, 5_1__, y_7/1_"
_6 _6 _0 /944_6) /1131,9) /433_4) /46&3)
_)48_t_6_ 1 6 3_ 7_/_ _ 3_ 8_/_ _ 1_5V_ _ 1_ 6_/_e_
/10971 /1131_9) /433_4) /488_3)
NOT_: D_rre_s_ons s_ow_ In feet _ncbes, D_rne_s_ons Jn/ ) a_e _r_Hrrete_s_
E F G H J K L N P
1117/1_ ¸_ 15_/1_ ¸ 151½ ¸_ 110 ¸_ 11_ 065/_ 0111/_ ¸_ 021_/1_ ¸¸ 06 _
/895_3) /436_6) /43_) /5_9J) /33D_21 /168_3) /288_B) /78) / 182_41
1_17/1_ 1_/1_ 1,_11/_ ¸_ 2_.4_ 1_2_ 0_/_ 0_11_/_" 0_21_/1_" 0_ _
/595_3) /436_6) /887_4) /711_5) /35_6) /171_8) /295_3) 175_ /182_4)
2,_1/2 ¸, 17_/_ ¸, 2,5_/1_ ¸, 2,101/1_ ¸, 1111/1_ ¸, r}81/_ , 137/_ , r}37/1_, r_l/2,
/774_71 /498_5_ /7411 /865_5) /347,71 /206_4) /403_2) /88) /165_4)
2_6_½_ 1_7_ _ 2_ 1_/_ _ 3_V_e _ 1_2_½_ 0_8V2 _ 1_ 6_/__ 0_/_ _ (_ 6_/2_
(774_7) /498_5) /893_4) /1017_g) /35421 /215_9) /479 41 /88) 065_4)
_[_D BAFFLE _CCESSO_
1
-A-
FRO\T Eii
@
M OPERATING WT
UNIT _IZE i_ mm Ib k_
018 % 18¸88 166 753
_)24 _ 18_88 176 79_8
38HDF _/4 19_05 187 84_8
t_18 % 18_88 166 75_8
t_24 % 18_88 176 79_8
38HDR _6 _/4 19_05 250 113_4
948 _ 22_22 278 126_1
_L 4 -
(4O6)
MINIMUM MOUN_NG PAD
DIMEN_ION_
UNIT ,£1ZE S_pport Feet
CHA_I_ _IZE_ t_& _6 1_ 11_ x 3 _6 _ 884_2 x 1066_8
CH A_I_ _IZE_ 1 & 1_6 2_4_" × ,_ 2 _ 609_6 x 1270
NOTES;
1 Required _ea_anoes: W_h ¢o_ faring walt a_ow 6 in m_nim_ m clearance
on coil _q,le and cr,_ end, and 3 feet minimum o_earance on or,r_p_essor
en_ and fan s_e, W]t_ fan fa_g ,_,_L al_o_ 8 _n__r_nlrnu_r c_e_anoe on
fan s_e and o_ end_ _nd 3 feet r _in_mur_ _1ea_noe on oomp_esso_ end
and _o_1_de_ With mu_ 4_t a_#_atio_ arrange u_s so diSOha rge of o_e
does not en_e_inlet ,,f anothe_
2_ _ m erkslo_s In _ a rer_es_ a_e _nrlHimete_
3_ Cente/oI G/aV_y
, FIELD _,OWEI__Ur,pL_¸ CONN
7/8"(22_) W2"TRA0_
(FI_D pROVIDED AND INST_LE D_
Fig. 2--38HDF, HDR Unit Dimensions

Step 2 -- Rig and Mount Unit
MOUNTING ON GI_.OUND M_unl und on a solkL level
(OTI_Wk" ptd Posilioll ufld so \_ll_l oI i(e I_oln 1(iol do_s ilo_
ldl dire_ll_ ohio unil Access_r_ shaking kils cm be used
_hell Llnds fie hi _X_ skKke(J _ee il]slai[ali(lll illshtl_[ioI1s
pm_Med _ilh Ihe a cessoJ_ kd Use fieM pm_ided sno_ sltnd
ol KU IKk _ [l_re plo[ongud subhuezillg le ml_'l ilules ol [1_*I\ _
Silo _\ O_( UIS
It ollddiolls or k_.aJ codes reqtlh e Lllli( bu hs R'l_ed k) a ptd,
6fiekl supplied liedo_\n I×)ll_ shouM I'_= used and Hsl_'nrd
Hlrough slol_ pro\ kk'd in uni_ mounli ng kx'l
MOUNTING ON ROOI Mounl uni[ /)n a level plall_)Hn
OI lllm_ _ tl lels[ 6 ill abo_e Iool suH I_e IsolaR* tIl_i[ ;uld lub
hlg horn ShU lure
RIGGING
Keep Ihe unit updghl and lift unil using a sling Use card
board or p_lding tinder file sling, and sp_ader bars k) pl_venl
sling damage to the unit¸ See Fig 3 See Fig 2 _r cenler of
_avity re_nce Install the unit so thai Ihe _il does nol _ce
ink>pJ_vailing winds¸ Il¸Ibis is nol _>s_ible and constant wields
a_>ve 25 mph are ex_cl_l, use accessory wield baffle¸ See
inslallalion instructions p_)vid_d with the accessory ki_
NOTE: Accesso_ wind baffles should be us_l on all units
with access(_y low ambiel_t I_ll_pera[ul_2 coil ffol
Field _lbrica[ed sllow or ice slailds may be used to raise [lld[
when operation will be _quired during winler monlhs Units
ii_w also Ix'_wall motll_i_xl tlShlg Ihe acc_ssoly wall IllOUll[hlg
ki_
When mo_e Ihan 50 1}of flltercomlecthlg [ubing alld molv
Ihan 30 fi (If verlical lift is used. consult Ihe residenli fl long line
applicalhm inslmctkm gukie. Fo_ long Ihle _pplications. inler
connecting lines ove_ l(X) I_must be installed wilh a liquid line
solenoid A liquid line olenoid may a13o _v installed on some
unils to improve parl I(×ld eHlciency Reier to Ihe ARI (Air
Conditioning & Rehigeralion Insldule) Directory
II eilhe_ _cl_ig_ranl tubing o_ indoo_ coil is exposed Io
Ihe almosphem, the syslem mtlsl be evactHled lollowing go(_i
_efligcralion p_acfices
Run rehigemnl tulx's as direclly as possible, avoiding
unnecessary lu_ns and bends. Suspend _ehigcmnl lubes so they
do IIOI (hlmage illsula{ioll OI1 vapor [tll%" alld do IIOI[r_lllSl_li[
vibralion to strucltm" Also, when passing reMgerant tnlx:s
thmu_ a wall. seal Ihe opening so Ihal vibratkm is nol ImnsmiF
led to sffuctmv Ix'ave some slack in _vhi_erant tubes belween
sff[ic[lll_, alld ollld<×/i tlfli{ Io absorb vibratioll I_eler to separale
ind_ und inslallation instm_ {ions h_ additional inlbnnation
CHECK ACCURATERCONTROI, The correct Accu
Raler (byl_ass lylx') rehigeranl conhol is required h_r syslem
capaclly oplimization An AccuRaler device wilh field
_eplaceable pislon (see Elg 4) ix supplied wdh tile ouMoo_ und
Reler k/ tile AccuRaler metering device table in sepmale
indoor unil inslallation illsllucliOllS It) delermine fl_e cormcl
AccuRaler pislon SiZe requhvd Ibr [l_e condenser/evaix)rator
syslem being installed
Pisk)n slyle as shown in Elg 4 ix shipped wilh Ihe unfl Do
no[ ill[el_ha_lge coll_lN)llell[s beIwee_l the AcctlRaler device
types Matching of ould<x_ unil with indoor und may requhv
hekl rephcemenl of pislon I).epl _ce pislun, if required, _vl/>_v
_x/nnecfing _eldgemnl lines See Hg 4 Pislon _vplacemenl
illSIltlC[kH1S are hlcluded ill the indoo_ lind iilsl{dia[ioll ills{lilt
lions A[ler syslem inslallation is complele, see Ihe Rehigeranl
Chaffing section on page 12 to dleck and/or adlust _vffigelanl
cha_ [x"
FIUFER I)RIER The ldle_ drier mtlsI be _eplaced whenev
er Ihe _<'higeralion system is exposed to Ihe atmosphere See
Fig 4 lot filler drier inslallalion
;OMPRESSOR
CAP W_Ttl ORiFIGE gODy
NOTE: Arrow on AccuR_ter body points in free flow direction _w_y from tho
indoor coil¸
Fig. 3 -- Lifting Unit with Sling
Step 3 -- Complete Refrigerant Piping Con-
nections- Ou_d<×_unils ma_ b_, .)nnecled Io indoor
unds using fieki supplk'd [ubing ol _efiigeranl g_lde and ondi
Ik>n Sr_' "hbles IA and 1B tbr conec{ line sizes I)o nol use
less Ihan 10 I_ol ink'_ onneding lubing
(By OTHERS}
COBLINB
38HDFO18-036
_BYO_HE_
I)O NOT I3IIRY MORE THAN 36 IN OI REFRI( ER
AN[[" PIPE IN THE GROUND Il¸ any see{ion of pipe i_
buried. _l_ere mus_ be a 6 in vertical rise _(>the valve
collnec[iol_s o1_ the oukl(x)l ¸ uidL II ¸ 13lore thall [he
recommend_l lengfl_ ix buded reffi_ant may migrate to
cooler, bud_l section durhlg exlend_l _d(_s of syslem
shuMown This causes refii_ranl slugghlg and could
possibly dama_ Ihe comp_ssor al starl up
_B¥ aTHEgm
38HDR018-060
Fig. 4 -- AccuRater (Bypass Type) Metering
Device Components

Only use _lcloJ} specil]ed liquid lille I]ltt'r (biers with ratt'd
working pl_ssures less than _X) psig
N( TI'E: Do nol install a suction line fillel ¸drier in liquid line¸
MAKE PIPING SWI! _[" C( )NNKCTIONS Remow plastic
caps from liquid and suction service wllves Use _igel_lfll
_ade lubintz Service valves are closed fl_m the _lctory and aE_
le_ly _r br_lzing Aller wrapping _he service valve wilh a we[
clolh, the tubing _l call be brazed to the sel vice valve usin_ ei
Iher silver beariEl_aor non silver bearing brazing mal_dal C_/l_
suit local c_le _quJr_menls I{_fligemflt _ubing arid the indoor
coil a_ now J_ly _ leak les_ing
N(_'E: Unil is shipp_I with R 4i0A _lclory charge indical_I
P_lss nitmtzcn _ olher inerl gas through piping while br_lz
ill_ Io p_velll _ll IllalJ Oil Of copier oxid_
Table 1A --38HDF018-036 Physical Data
UNIT 38HDF 018 024 030 036
NOMINAL CAPACITY (Tons) 1.5 2.0 2.50 3.0
OPERATING WEIGHT (Ib) 166 176 187 250
REFRIGERANT TYPE R=410A
METERING DEVICE AccuRater (Located at Fan Coil)
CHARGE (Ib)* 4.8 5.3 5.0 7.1
OUTDOOR FAN
Rpm/Cfm 840/1720 840/1720 840/1720 850/1720
Diameter (in.) 18 18 18 24
No. Blades 3 3 3 3
Motor (hp) l& l& l& 1/4
OUTDOOR COIL
Face Area (sq ft) 5.82 7.27 7.27 12.1
No. Rows 2 3 3 2
FPI 20 20 20 20
HIGH PRESSURE SWITCH
Cut-In (psig) 420 ± 25 420 ± 25 420 ± 25 420 ± 25
Cutout (psig) 650 ± 10 650 ± 10 650 ± 10 650 ± 10
LOW PRESSURE SWITCH
Cut-In (psig) 45 ± 25 45 ± 25 45 ± 25 45 ± 25
Cutout(psig) 20± 5 20± 5 20± 5 20± 5
REFRIGERANT LINES
Connection Type Sweat
Liquid Line (in,) OD 3/u 3/u 3/u 3/e
Vapor Line (in.) OD % % 3/4 3/4
Max Length (ft) 200 200 200 200
Max Lift (ft) 65 65 65 65
Max Drop (ft) 150 150 150 150
COMPRESSOR
Type Scroll
Model ZP16KSK-PFV ZP21 KSK-PFV ZP25KSE-PFV ZP34K5P-PFV
Oil Charge (POE - oz) 25.0 25.0 25.0 42.0
Accumulator Yes
CONTROLS
Fusible Plug (F) 210
Control Voltage1" 24 vac
System Voltage 208/230 v 208/230 v 208/230 v I208/230460v,Singlev,3 Phaseand3 Phase,
FINISH Gray
LEGEND _Unit shipped with full factory charge. See ARI (Air Conditioning and
FPI -- Fins Per Inch Refrigeration Institute) capacity table for proper charge a_d piston
POE -- Polyol Ester for each fan coiltype.
t24 v al_d a mil_imum of 40 va is provided in the fan coil unit.

Table 1B --38HDR018-060 Physical Data
UNIT 38HDR 018 024 030 036 048 060
NOMINAL CAPACITY (Tons) 1.5 2.0 2.50 3.0 4.0 5.0
OPERATING WEIGHT (Ib) 166 176 250 250 278 306
REFRIGERANT TYPE R-410A
METERING DEVICE AccuRatel (Located at Fan Coil)
CHARGE (Ib)* 6.3 6.5 10.0 8.9 12.0 12.2
OUTDOOR FAN
Rpm/Cfm 840/1720 840/1720 850/3900 850/3900 850/3900 850/3900
Diameter (in.) 18 18 24 18 24 24
No. Blades 3 3 3 3 3 3
Motor (hp) 1/8 1/8 1/4 1/4 1/4 1/4
OUTDOOR COIL
Face Area (sq ft) 5.8 7.3 12.1 12.1 14.1 14.1
No. Rowe 2 3 2 2 3 3
FPI 20 20 20 20 20 20
HIGH PRESSURE SWITCH
Cut-In (psig) 420 ± 25 420 ± 25 420 ± 25 420 ± 25 420 ± 25 420 ± 25
Cutout (psig) 650 ± 10 650 ± 10 650 ± 10 650 ± 10 650 ± 10 650 ± 10
LOW PRESSURE SWITCH
Cut-In (psig) 45 ± 25 45 ± 25 45 ± 25 45 ± 25 45 ± 25 45 ± 25
Cutout(psig) 20± 5 20± 5 20± 5 20± 5 20± 5 20± 5
REFRIGERANT LINES
Connection Type Sweat
Liquid Line (in.) OD 3/8 a/8 a/_ _/_ 3/_ 3&
Vapor Line (in.) OD s/_ s/8 a/4 _/4 7/8 7/8t
Max Length (ft) 200 200 200 200 200 200
Max Lift (ft) 65 65 65 65 65 65
Max Drop (ft) 150 150 150 150 150 150
COMPRESSOR
Type ScloJJ
oo0 i i i i
ZP16KSE=PFV ZP21K5E=PFV ZP25KSE=PFV ZPZ9K5E=PFV ZP42KSE=PFV ZP51KSE=PFV
25.0 25.0 25.0 25.0 42.0 42.0
Oil Charge (POE - oz)
Crankcase Heater (watts) -- -- 40 s 40 40 40
Accumulator
CONTROLS
Fusible Plug (F) 210
Control Voltage** 24 vac
System Voltage 208/230 v 208/230 v 208/230 v 208/230 v, Single and 3 Phase, 460 v, 3 Phase
FINISH Gray
LEGEND
FPI -- Fins Perlneh
POE -- PolyolE_e_
*Unit shipped with full factory cha_ge. See ARI (Air Conditionh_g
and Refrigeration institute) capacity table for p_oper cha_ge and
piston fo_ each fan coil type.
tValve connection size is 7/8 inch. Recommended line size is
11/_ inches.
*'24 v a_d a minimum of 40 va is provided in the fa_ coiJ u_it.

Step 4 -- Make Electrical Connections
lJfli[ _ ibil_o[ mull have' _lfl Unil_ldrftlp[_*_l, ul_brokdll ele_hi
cal g]ound It>minimi!e Ille possibilily ol pelsonal injmy il
an elec(rical lhtdl shouki occm This glound may consisl of
elecIrical wire comlected to tlili[ gJound Iqg in control Coll_
partmenL oJ cofldlli[ appJoved Iur eleclJical grotllld whell
hlslalled in accordance with NEC, and I(_al electrical
codes Failu;v to lollow this warning couki resull in Ihe
hlslaller behlg liable Ik_ltile pel SoElalinJuly ol odlers
B_JDI_ _r_lrl2qil_g service or mailll_[lallce, bg stirs? illd(×)r
unit mare powel swilch is mnlrd OFF and md/×)r blower
has slopl_'d Pailure Io do so may _'sull m elechical shock
or iEliury hum rolalJ ng hm blades
CONTIEOL CIRCUIT WIRIN( COEllml volta_a" is 24 V
(40 va minhnumi See Fig 5 and unit label diagram _>r l_eld
suppbed wiring delails Rou_e conh_)l wire _hrough opening in
tlllil side pallel IO coIIIl_clioI1 ill UllilCOIlllOI IN)X
NO'I]: For wiJe runs up Io 50 ft. use no 18 %VG (American
Wi_ Gage) instdaled wire¸ I_r 50 to 75 I/. use no 16 AWG
instdaled wire¸ I_r over 75 ft. use 14 AWG insulaled wire¸
NOTE: All wiring mus_ condom to NEC and k,cal c<_es
N()TE: Operating unil on improper line volla_ consliltltes
abuse and could affecl Carder warmnly See I_bles 2 and _
Do n_ install unil in a system where volta_ may flucltlal_
al_>ve or below permissible limits¸
_? _[_lbles 2alld 3 _)r recoml_qelld_xi ftlse ';i/us Whell ill_lk
iil_ eleclrical COiln_2CtiOilS, provide cleara_lce al 1lie [lllit I_)r re
I)i_ranl piping connections
N(_'E: The 38HDF units are suppbed wilh a 24 v control
Ii_llls_l_qer The _HI)R tllli_ _se Ihe c<)llll_)l [lallsl_lrmer
suppbed with _he mal_h_l indo_ unil
POWER WIRING [ hlit is _c_>ry wired ff_r voltage shown
oll ii_ll_q_2plale Prt)vide adequate, I_lst_(l disc()llllecl swilch
within sight _om unit. readily accessible, bul out of reach ol:
children¸ Provision _J locking the swilch open (offl is advis
able to prevent power _om being _unled on while unil is being
servic_l Disconnect swilch, fil_s, and field wiring Enusl
C<_lply wilh Ihe NI_ and local c<_le requirements¸ Use c<>pl_:_r
wire ollly I_tw_?_l the discollll_?cl swilch tiled tlllil Use
Illiilil_q [Iill (_0 C wire _r the _eld _ )'¢,er COilil_CliOll
Roule _>wer wires through _he opening in unil side l×lncl
alld collllec_ ill the tlllil colltrol box as ',howII oil the2 t111itI_ll%'_l
diagram and Fig 6 and 7 Unit mus_ be gl_)unded
CI)NNE(_I'IONS TO DUCTFRI_ FAN COIL UNITS
The 38HDR units are designed _ easy match up to 40QA
ducl _ee _ln coils¸ This unit provides 24 v power ff_r the out
door [lllil _om the _l_l coil¸ Collnec[ Ih_ Y aild C I_r_nillal,, ol ¸
Ihe hldoor ullit I_! 1he Y a_d C lelmhlals
38HDF UNITS 38HDR UNITS
CO_4HON{C)
24V_C (R} R_B _
SbPPLY
F_LO _OP_'LIEO
_'_TAT Wlrl_
_00_ UNZT
LOW VOLTAGE C0NNECT10NS
NOTE: For more information see schematic inside uNt.
£[_LO _PPL lEO
INDO_ UNIT
LOW VOLTAGE CONNECTIONS
Fig. 5 -- Typical Control Circuit Connections

Table2-- 38HDF Electrical Data
38HDF
UNIT SIZE
018
024
030
036
V-PH-Hz
208/230-1-60
208/230-1-60
208/230-1-60
208/230-1-60
208/230-3-60
460-3-60
VOLTAGE RANGE* COMPRESSOR OUTDOOR FAN MOTOR MIN CKT
Min Max RLA LRA FLA NEC Hp kW Out AMPS
187 253 10.0 48.0 0.80 0.125 0.09 13.3
187 253 14.3 58.3 0.80 0.125 0.09 18.7
187 253 15.7 73.0 0.80 0.125 0.09 20.4
187 253 20.0 112.0 1.45 0.25 0.19 26.5
187 253 14.7 88.0 1.45 0.25 0.19 19.8
414 506 6.6 44.0 0.80 0.25 0.19 9.1
FUSE/HACR
BKRAMPS
20
3O
35
45
3O
15
LEGEND
FLA -- Full Load Amps
HACR -- Heating, Air Conditioning, Refrigeration
LRA -- Locked Roto_ Amps
NEC -- National Electrical Code
RLA -- Rated Load Amps (Compressor)
*Permissible limits of the voltage _ange at which unit will operate
satisfactorily.
NOTES:
1. Control circuit is 24 v on all units and requires an external powe_
source.
2. All motois and co r[/pr _/ssor s contain intelnal oveiIoad plotection.
3. In compliance with NEC (U.S.A. Standard) _equi_ements for muF
timotor and _mbination load equipment (refer to NEC Articles
430 and 440), the ove_ou_rent p_otective device for the unit shall
be fuse or HACR breaker.
4. Moto_ RLA values are established in accordance with UL (Under-
writers' Laboratories) Standard 465 (U.S.A. Standard).
5. 38HDF, HDR018-030 units are only available in single-phase
voltage.
6. Unbalanced 3-Phase Supply Voltage
Never operate a motor where aphase _mbalance in suppiy vet,-
age is greater than 2% Use the following formuJa to determine
the percentage of voltage imbalance:
= 1O0 x max voltage deviation from average voltage
average voltage
EXAMPLE: Supply voltage is 460-%60.
A B C AB-452v
BC = 464 v
AC =455v
Average Voltage = 452 + 464 + 455
3
1371
Determine maximum deviation from average voltage:
(AB) 457 - 452 = 5 v
(BO) 464 - 457 = 7 v
(AC) 457 - 455 = 2 v
Maximum deviation is 7 v.
getermil_e percentage of voltage imbalance:
7
% Voltage Imbalai_ce _ 100x 457
1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum aiJowabJe of 2%.
I latMe,PyOfRhTAeNsTu:pCly/talcttYCUpll°c_eli_l_leol;_c_eiHIy c/°rmePt_lt_Y/i_/r/n_*di" I
- 457

Table 3- 38HDR Electrical Data
38HDR
UNIT SIZE
018
024
030
036
048
060
VOLTAGE RANGE* COMPRESSOR OUTDOOR FAN MOTOR MIN CKT
V-PH-Hz Min Max RLA LRA FLA NEC Hp kW Out AMPS
208/230=1 =60 187 253 10.0 48.0 0.80 0.125 0.09 13.3
208/230=1 =60 187 253 14.3 58.3 0.80 0.125 0.09 18.7
208/230=1 =60 187 253 15.7 64.0 1.45 0.25 0.19 21.1
208/230=1 =60 187 253 15.7 77.0 1.45 0.25 0.19 21.1
208/230=3-60 187 253 10.4 88.0 1.45 0.25 0.19 14.5
460=3-60 414 506 6.3 38.0 0.80 0.25 0.19 8.7
208/230=1 =60 187 253 24.3 117.0 1.45 0.25 0.19 31.8
208/230=3-60 187 253 15.6 83.1 1.45 0.25 0.19 21.0
460=3-60 414 506 6.9 41.0 0.80 0.25 0.19 9.4
208/230=1 =60 187 253 29.4 134.0 1.45 0.25 0.19 38.2
208/230=3-60 187 253 17.8 110.0 1.45 0.25 0.19 23.7
460=3-60 414 506 8.6 52.0 0.80 0.25 0.19 11.6
FUSE/HACR
BKRAMPS
2O
3O
35
35
2O
15
55
35
15
65
4O
2O
LEGEND
FLA -- FullLoad Amps
HACR -- Heating, Air Conditioning, Refrigeration
LRA -- Looked Roto_ Amps
NEe -- National Electrical Code
RLA -- Rated Load Amps (Complessor)
*Permissible limits of the voltage _ange at which unit will operate
satisfaoto_ily.
NOTES:
1. Control circuit is 24 v on all units and requires an exter hal powe_
8ouloe.
2. All motols and _mpressors contain internal oveiIoad ploteetion.
3. In compliance with NEC (U.S.A. Standard) _equi_ements for muF
timotor and combination load equipment (refer to NEe Articles
430 and 440), the ove_ou_rent p_otective device for the unit shall
be fuse or HACR breaker.
4. Moto_ RLA values are established in accordance with UL (Under-
writers' Laboratories) Stand_d 465 (U.S.A. Standard).
5. 38HDF, HDR018=030 units are only available in single=phase
voltage.
6. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbatance in supphl vo_t-
o
age is greater than 2 _ Use the following formula to determine
the percentage of voltage imbalance:
= 100 x r_/ax voltage deviation flora average voltage
average voltage
EXAMPLE: Supply voltage is 460=3=60.
A 8 C AB=452V
_ BC =464v
AC = 455 v
Avelage Voltage = 452 ÷ 464 + 455
3
1371
Determine maximum deviation from average voltage:
(AB) 457 - 452 = 5 v
(BC) 464 - 457 = 7 v
(AC) 457 455=2v
Maximum deviation is 7 v.
Determine percentage of voltage imbalance:
7
%Voltagelmbalance= lOOx 457
= 1.53%
This amount of phase imbalance is satEsfactory as it is below the
maximum allowable of 2%
IIMPORTANT:ContactyourlocaleIectricutilJtycompanyimmedi- I
ately ifthe supply voltage phase imbalance ismo_e than 2%.
= 457

T_AN
LEGEND
C -- Contactor, Compressor _ Terminal (Marked)
CAP -- Capacitor
CCHT -- Crankcase Heater Them_ostat 0 Terminal (Unmarked)
OH -- Crankcase Heater
COMP-- Compressor Motor _ TermEnaIBiock
EQUIP-- Equipment
GND -- Ground • SplEce
HPS -- High-Pressure Switch
LPS -- Low-Pressure Switch -- Factory Wiring
OFIVl -- Outdoor-Fan Motor .... FEe_dControIWiring
OL -- Overload I R I FEe_d Power WErEng
TB -- Terminal Board
TRAN -- Transformer ----- OptEonalor Acce&sory WEre
SplEce (FEeld)
CONTROL COMPONENT ARRANGEMENT
I_ I *i_
i
JUNCTION
BOX
_]&u _m0L _]Rm_ N_E.mCL_52
UNIT COMPONENTS
38H DF OPERATION SEQUENCE
CALL FOR COOLING:
1. Control voltage from fJa_lsformer to tilermostat (24 v).
2. At thermostat 24 v is switched to "G" and "Y."
3. 24 v from thermostat "G" energEzes fan relay at indoor fan coil unit and indoor-fan motor runs.
4. 24 v f_om themlostat "Y" eller gizes tile contactor coil alld tile compressor and outdoor-fall motor will both
run.
6. If the inter hal protection of the corr#ressor or LPS or HPS open, the 24 v to contactor coil will be inter-
rupted. Tile compressor and outdoor-fan motor will stop.
NOTES:
1. Compressor and fan motors are thermally protected.
2. Wire in ace old alice with National Electlical Code (NEC) alld local codes. Replace
any original wires with 90 _ C wire or Eisequivalent.
3. Use minimum 60 ° C wire for field power wiring.
4. T_a_lsfom_er has internal 4.5A tilermal fuse on tile primary side.
5. Transformer factory wired for 230 v. For 208 v move black wire to 208 volt tap on
t ransfom/er.
6. Crallkcase heater alld themlostat used oil selected models only.
Fig. 6 --38HDF018-036 Typical Wiring Schematic

LEGEND
C -- Contactor, Compressor SplEce (Field)
CAP -- Cap_citor
CCHT -- Crankcase Heater Q Terminal(Marked)
Thermostat
OH -- Crankcase Heater 0 Terminal (Unmarked)
CLO -- Compre_or Locko_
COIVlP -- Compressor Motor I_ Terminal BJock
Cm -- Current TranslorFrler
EQUIP -- Equipment • Splice
GND -- Ground
HPS -- Hkjh-Pre&sure Switch -- Factory Wiring
LPS -- Low-Pressure Switch .... Field Cent]el Wiring
OFIVl -- Outdoor=Fan Motor _. _FieJd Power Wiring
OL -- Overload
TB -- Terminal Board
CONTROL COMPONENT ARRANGEHENT
"1 I!DcL0
JUNCTTON UNTT COHPONENT5
BOX
pUUG_E:_
_e_Oc_r_u Wlnen_N.EC Ct_S_2
38HDR OPERATION SEQUENCE
CALL FOR COOLING:
1. Cent] el voltage _om transformer to tilermostat (24 v).
2. At thermostat 24 v is switched to "G" and "Y."
3. 24 v from thermostat "G" energizes fan re_ayat indoor fan coil and indoor-fan motor runs.
4. 24 v from thermostat "Y" e_le_gizes tile logic in tile CLO, and tile contactor coil both at tile outdoor unit.
Compressor and outdoor=fan motor run.
6. If the internal protector of the compressor, HPS, or LPS open, the 24 v to the contactor coil will be inter-
i_Jpted, tile compressor and outdoor- fan motor will stop, and the CLO will keep tile circuit ope_l unf_l reset
by stopping and restarting the 24 v power at the thermostat.
NOTES:
1. Compressor and fall motors are tiler mally protected.
2. Wire in accordance wiih National Electlical Code (NEC) and local codes. Replace
any original wires with 90' C wire or its equ _alent.
3. The CLO locks out the COMP to prevetlt short cycling oil COMP overloads and
safety devices. Before replacing CLO check these devices.
4. If indoor section has a transformer with a grounded secondary, connect the
grounded side to "C" oil the low voltage board.
5. Use minimum 60' C wire for field power widng.
6. Crankcase heater and thermostat used on selected models onl,4
Fig. 7-- 38HDR018-060 Typical Wiring Schematic

START-UP
Preliminary Checks
I Check Ihal all mlmmd _iriEIg onn_' tk/ns aw lighl and
Ihat all harriers, covers, and panels are iEIplace
2Fi{'[d{'[{2chi{a[]](>_\{q()tlJ_'mils[agFec_\i[htll]i[flame
plal_*HliEIg
3 All selvice valves musl be open
4 BHI) band mnkcasuhealeimustbutighlon ompwssor
(rankt ase lor those units wilh belly trend h_'alcls
Leak Test -- IHd piping and l:m coil musl Iw k'ak msk'd
by pwsstn_ mefll(×l. Use R 410A at appioximaIHy 25 psig
ba(ked up _\i[b aEI ihel[ gas [O a k>la[ pW',SUIe i]()[ [O cxc_d
245 psig
[._*ak delecl_)is should I*" designed {o delecl HI:(• (hydro
Iluorocad)on) mhigemnt
Evacuate and Dehydrate -- Field piping and lan coil
mus{ be evacuated and debydraed
Charge System -- Release charge into syslem by oF.'n
ing (backseating) liquid and suction line seivice valves R<qcr
_o sepam{e indoor unit installmion insfruclions lot Ihe required
tolal system chaEge when con necl{'d Io 25 fl of tubing.
TO Start Unit--Be tire Ihat the field dis_onnecl is
closed Se{ room d_e.nosmt Mow imbienl Imnpcralure ()per
ale unil loi 15 mhlules. Iben check syslem rel?igemnl charge
See R<'hig<'mn[ (barging secIion on page 12
NOTE: When using in conjunclion wilh 40QA oi 40QK hm
coils, rder to stair up iEIslruclion_ iEIcltld_*dwith Im coil I_r
colfvcl glail lip ploc_**]tll_2s
SERVICE
Outdoor Fan -- _, leinl]liced _qle mounl holds Ihe oul
door i_lll assel_lbly ill IX>SiliOll _ee Fig _ l()r plopel ¸ i_lt)thllillg
posili(>ll
[ I
I I [" ............ ,_ FANBLADE
OUTSIDE EDGE OF OUTSI_ EDGE DIMENSION FROM
FAN DECK OF GRILL[ O UTSIDE TOP ED:_E OF
BLADETOOUTSIDEEDGE
OF FAN DECK SEE TABLE
BELOW
38HDF UNIT SIZE, in.
018-030 I0360.433 0
38HDR UNIT SIZE, in.
018,024 I 030,036 048,060
0.433 I 0 0
Fig. 8 -- Condenser-Fan Mounting Positions
High-Pressure Relief Valve -- The high piessure re
lief valve is Iocaled in the compl_ssor The relief valve opens al
a pressul_ dii]i_rential of appix>ximalely 550 to 625 + 50 psid
belween suc[ion (low side) and dischar_ (high _ide) I_>allow
pressure eq tl_llizali()ll
Internal Current and Temperature Sensitive
Overload--The _onm,I _esels automatically wh(m
(overhmds may require up fo 45 minlll_'s Io res(q) V;'hen aEI
inleimd o\ _'d(×tdis suspecled of buing opun. check h} using ;tEl
Pumpdown Procedure -- "rh_,sysl_'mmaybepumlwd
dOWl] il1 (>ld{'l [o make rq) lirs Ol] Ibe low ski{* _,\ilhotll IOgillg
{ompb't_* wl?igcranf dmrgc
Whell system illtls[ be openetl ior selvice, recover .'fiig<'r
ant, hwak vacuum wilb di} nilix/gen belolv opening system
I AIlach pit'ss uie ga<_t:Io uclion service valve gage pol I
2 Fionlseal Ihe liquid/mixed phase line valve
The 38HD( unit coils hold only Ihe lactoiy designaled
al_lotln[ ol ¸ re_igeia_lf Addifi()ll_ll re_i_Kln[ may cause
ullJfs It) l_lieve presstlre fhl_)tlgb [be compressol ¸ ill[erl]al
presstn_ relief valve (indical_l by a sudden rise of sucfion
presstl_) bel_le suclion pl_sstlre _aches 5 psig If fhis
occurs, shtll off tlnil imllledialely I]]ell iroEl[seaf fhe stlcfi(>ll
valve aEId l_move and i coover excess rei)J_rall[ I_llowill
accepfed practices¸ I_uipEnenf damage may restlll
) Slarl UlJfalYl rllll tlll[il StlCllOll plt'SStlW rt>aches 20 psig
4 _htll ul]il o_and _oiw,eaf stlcli()ll valve¸
5 IiX,picssurize low side of unil and wcover rel?igeranl
Iollowing acceptt'd practices
High-Pressure Switch i ]]_e high piessnlv swifdl.
Ioca_t'd on discharge line, prolecls agalnsl high discharge
plk:gStllCS callstYti by such evellls as ovu_dlarge. COlldellSt:rdall
mohu hfilure, syslem lcstriction, elc II oi,'cns (m picssure rise a[
aboul 650 + I0 psig If syslem pressures go above Ibis selting
dtlrillg abllOrlllal colldi[iOllS, file swilch opt:ll S
I)0 NOT auempl Io simulale Ihese syslem IbEIolm dilies
high pressures pose a seli(>tls sal}21y hazard¸
"l]_ehigh piessure swilch is checked wilb an ohmmelei; II
_yslem pressure is _low 625 psig _wilch shows conlinuify
CrankcaseHeateriThe crankcase healer pl_veEIfS
i_i_ranl migralion and compressor oil dilution dtlring
shtlkiOWll Whel] COll]pressol ¸ is ilo[ opelafill_. If Ihe cl'ailkc_lse
healer is deenergi!ed [or more fhall 6 hOtllS, bolh COll]pl_2Ssor
servict2 valves ii]tlSl I_ closed¸
N(_'E: Crankcase heaters are only available on 38HDR030
0_) unifs
The crankcase healer is powered by Ihe high volfa_ power
(if Ihe tlllil. If is COll_lecled across Ihe lille side of Ibe COllfaclor
and is Ihermoslmically conholl_i

l'<>Iroubleshool:
I Apply vol_meler across crankc'_l_c healer le_ls _! see if
hea_er volta_ is on Do _o_ _ch hea_: CaJ_fldly f_el
al_d_l arc)tiled Cl_l[Ikc_ls_2 healer; if warm. crallkcas_2 healer
is Ihnctionhlg
2 Wilh power off mid he_ller leads disconnected, check
acros_ leads wilh ()llllll_le[er Do ilol I<×)k _>r a slx_c dl c re
',iSlallCe l_adil_g Ch_ck _l ¸ _sislallce or all open ciicui[.
and change healer if an open circuil is delecled
Service Valves -- The service valves in the ould<×>r unil
come l]_)m [he _clorv I_o_l[seal_l. This i_lealls [he re_ige_llll
chal_ is isolal_l _ol_q [he lille S_I collllec_i_l_l polls "I_l pl_velll
dama_ to Ihe valve, u_ a wel clolh or o_her accepl_l heal¸ siEIk
ill_llerial Ol_ [he valve be_)r_ I)razillg
The service valve cannol _ I_eld rel×li_d. Ihere_re. only a
Col_lplele valve or valve s[elll seal alld service poll Caps al_
available l<)r replaceEll_21_l
Refrigerant Charging
Service valves musI bt' hdly backsealed to clo_e service
poll "]'he_ is iio _chrader wdve al Ihe service [×>rL and
hidm{' Io I_lckseal Ihe valve could _estdt in loss ol syslem
chmg_' ol [x'_sonal hlitn y
NOTE: I)o nol vent or dep_vssuii/e [lilJ[ l(2[lig{_rail[ [o _l[lllO
sphe_t' Remove and recover rt'higt*ranl _llouing accepl_*d
pmcdces
All units a_e shipped wilh Ihe refiigcrant cha_gc lisled on
Ihe fl_lll_epl_!le ¢;ee il_d(x)r ufdl Illsla]l_lli()ll hlstruc[io_ls I_lr ad
dilional cha_ r_quiJ_menls
N(_FE: F(_ 3_HDF units only, charge _> nameplale See the
illdool ¸ tll_i[ owllel's ii_llltlal I_lr ally addidollal char_
ieq uir_2111uil[s
Re_ ¸ It! Ihble 4 and consider _he I_llowing when working
with Pure>n® reffi_rant:
* Puro_ re_ig_rall[ cylillders are rose colored¸
•Recovery cylillder s_Jvice pressure laling mtls_ be
400 psig, DOT (Deparhnent ol l_anspor_adon) 4BA400
or DOT BW400
.Puron systems should be charged wilh liquid refrigerant¸
Use a commercial lype melering device hi Ihe mani_ld
hose whel_ chargil_g ill[(! stlcdoll lille wilh coml)r_ssor
operalmg
• Mani_/kiselsshouN be 700 psig high sideand 180psig
low side with 550 psig low side rel_lrd
• U_e hoses with 7(_1 psig service pressure raling
• Puron reffigeranl, as with o_her HFCs. is only compatible
with POE oils¸
• 'v'acuuii _ pt1111ps will i_o_ remove illois[ure ffolal oil
.Polyol L_ler oils absorb moisture rapidly¸ Do no_ expose
oil Io a[l_osphel_
.Polyol Ester otis may cause damage to certain plastics
alld rOO_l_g mal_2ri_ls
.Wrap all filleJ ¸ driers and service valves wi_h wet clolh
Whel_ brazillg
.A _ctory approved, liquid line I_l_el ¸ drier is required on
_2very ullil
.Do nol use a TXV Ithermosl_llic expansion valve)
designed _!r use wilh R 22 refrigerant¸ Rear to separate
il_door ullil ills_alla[ioll il_sIrtlcdolls for mo_ delails
.II¸ u_h_g a suction line drier, do not leave in place I_>l¸
more [hall 72 hot11s
12

PRESSURE
PSlG
12
14
16
18
2O
22
24
26
28
3O
32
34
36
38
4O
42
44
46
48
5O
52
54
56
58
6O
62
64
66
68
7O
72
74
76
78
8O
82
84
86
88
9O
92
94
96
98
100
102
104
106
108
110
112
Table 4 -- Pressure vs. Temperature Chart -- Puron® Refrigerant (R-41OA)
TEMPERATURI
*F377
347
320
-294
-269
-245
-22_2
-20_0
17_9
15,8
13_8
IL9
8_3
6_5
4_5
3_2
L6
0_0
L5
4_5
5,9
Z3
8_6
10_0
IL3
12_6
13_8
15,_
16,3
17_5
18_7
19_8
2L0
22_1
232
24_3
25_4
26,4
27_4
2&5
29_5
30_5
3L2
322
33_2
34_1
35,1
35_5
36_9
PRESSURE
PSIG
114
116
118
12¢
122
124
126
128
136
132
134
136
138
148
154
166
162
164
166
168
17¢
172
174
176
178
186
182
184
186
188
196
192
196
198
2¢¢
2¢2
264
2¢6
2¢8
21¢
212
TEMPERATURE
F
378
3_7
395
405
4_3
422
430
438
_7
45_5
46_3
4Z1
47_9
_7
49_5
50,3
5_1
5_8
52,5
53_3
54_0
54_8
55_5
56_2
57_0
57_7
5_4
59_0
59_8
60_5
6_1
6_8
62,5
63_1
63_8
64_5
65_1
65_8
66_4
67_0
6Z7
68_3
68_9
69_5
70_1
70,7
7_4
72,0
72,6
732
PRESSURE
PS_G
216
218
223
222
224
223
228
230
232
234
236
23_
24,)
242
244
246
243
250
252
254
256
258
23G
232
2_4
235
238
270
272
274
276
278
280
28_
284
286
233
232
233
298
3C_
30_
3C4
305
3C8
3_0
3_2
3_6
_EMPERATURE
_F
743
749
755
76_
767
772
778
78_4
78_9
79_5
80_0
80_6
8_6
82,2
82,7
83_3
83_8
84_3
84_8
85_4
85_9
86_4
86_9
87_4
87_9
8_4
88_9
89_4
89_9
90_4
9_4
91_9
92,4
92,8
93_3
93_8
94_3
94_8
952
95_7
96_2
96_6
9Z_
9Z5
98_0
98_4
98_9
99_3
99_7
_RESSURE TEMPERATURE pF_E_SURE TEMPERATURE PRESSURE TEMPERATURE
318 _00,2 420 _20_7 522 137_6
320 _00_7 422 _21 _0 524 137_9
322 _0_1 424 _21 _4 526 138_3
324 10_6 426 121 _7 528 138_6
326 _02,0 428 _2_ 536 13&9
32_ _02,4 430 _2_5 532 139_2
330 _02,_ 432 _2_8 534 13_5
332 _03_3 434 _232 536 139_8
334 _03_7 436 _23_5 538 140_1
336 104_2 438 123_9 546 140_4
33_ _04_6 440 _242 544 14L0
340 _05_1 442 _24_6 548 14L6
342 _05_4 444 _24_9 552 142_1
344 _05_8 446 _25,3 556 142_7
346 _06_3 448 _25,6 566 143_3
348 106_6 450 126,0 564 143_9
350 _07_1 452 _26,3 568 14¢_5
352 _07_5 454 _26,6 572 145_0
354 _07_9 456 _2Z0 576 14&6
356 _08_3 458 _2Z3 586 146_2
358 _08_8 460 _2Z7 584 146_7
360 109_2 462 128_0 588 147_3
362 _09_6 464 _28_3 592 147_9
364 _10_0 466 _28_7 596 14&4
366 _10,4 468 _29_0 6_¢ 14_0
368 _10_8 470 _29_3 664 14_5
370 _1_2 472 _29_7 668 1_0_1
372 11_6 474 130_0 612 150_6
374 _12,0 476 _30_3 616 15L2
37_ _12,4 478 _30_7 62¢ 15L7
378 _12,6 480 _3_ _0 624 152_3
3_0 _13_1 482 _31 _3 628 1_2_8
3_2 _13_5 484 _31 _6 632 153_4
384 113_ 486 132_0 636 153_9
3_6 _14_3 488 _32_3 64¢ 15¢_5
3_8 _14_7 490 _32_6 644 155_0
390 _15_0 492 _32_9 648 15K5
3*)2 _15_5 494 _33_3 652 156_1
394 _15_8 496 _33_6 656 156_6
3*)6 116_2 498 133_9 666 157_1
3*)8 _16_6 500 _34_0 664 157_7
400 _17_0 502 _34_5 668 15&2
402 _1Z3 504 _34_8 672 15&7
404 _17_7 506 _35,2 676 159_2
406 _18_1 508 _35,5 686 159_8
408 118_5 510 135,8 684 160_3
410 _1_8 512 _36,_ 688 160_8
412 _19_2 514 _36,4 692 16L3
414 _19_6 516 _36,7 696 16L_
416 _19_9 518 _3Z0
418 _20_3 520 _3Z3
Subcooling Method -- Fo_ 38HDR units only. file sub
c(×_ling medical is used to check and adjus_ char_ during the
c(×_ling season¸ Reler to "l_ble 5 and tile _llowing procedure:
NOTE: I_!r use with _sideEitial I_ln coils and _l_e40QA0(-i)
uEider ceiling unit OElly
I()peJ_lle unil a minimum of 15 mhlu_es _l_Je checkhlg
charge
2 Measm_ liquid line teEnperaluJ_ near liquid _hle service
valve, and measuJ_ the liquid pressu_ at Ihe liquid Ihle
service valve¸ Us_ a di_ilal Ihermometer _J all lempera
ture measurements I)O NOT use me_tny or dial _ype
3 I).elcJ Io "Ihble 5 Find Ihe lempt'ralme pohll al which tile
r_quir_?d Stll)c(×)lill_2 lem_r;tltll_2 illler_ecl_ Ihe m_dasur_dd
liquid liEle pressure¸
4 If _he measured liquid liae _emperaluJ_ does nol agree
with the required liquid line lemiK'_raluJ_. ADD J_i_r
anl to lower Ihe _emperaIu_, or REMOVL J_i_ran_ I_
raise [he I_ii_l'K'_lal [iJ_ (allow a Iolel ;tllc_ of+_ <_F)
13

Table 5 -- Subcooling Charging Table
REQUIRED LIQUID LINE
LIQUID PRESSURE
AT SERVICE VALVE
(psig)
TEMPERATURE (F)
Required Subcooling
Temperature (F)
810 12 14 16 18
189 58 56 54 52 50 48
195 60 58 56 54 52 50
202 62 60 58 56 54 52
208 64 62 60 58 56 54
215 66 64 62 60 58 56
222 68 66 64 62 60 58
229 70 68 66 64 62 60
236 72 70 68 66 64 62
243 74 72 70 68 66 64
251 76 74 72 70 68 66
259 78 76 74 72 70 68
266 80 78 76 74 72 70
274 82 80 78 76 74 72
283 84 82 80 78 76 74
291 86 84 82 80 78 76
299 88 86 84 82 80 78
308 90 88 86 84 82 80
317 92 90 88 86 84 82
326 94 92 90 88 86 84
335 96 94 92 90 88 86
345 98 96 94 92 90 88
354 100 98 96 94 92 90
364 102 100 98 96 94 92
374 104 102 100 98 96 94
384 106 104 102 100 98 96
395 108 106 104 102 100 98
406 110 108 106 104 102 100
416 112 110 108 106 104 102
427 114 112 110 108 106 104
439 116 114 112 110 108 106
450 118 116 114 112 110 108
462 120 118 116 114 112 110
474 122 120 118 116 114 112
486 124 122 120 118 116 114
499 126 124 122 120 118 116
511 128 126 124 122 120 118
Compressor Lockout Switch --I"h_ = 38HDR unils
aiu provided _ith a compwssoJ hx:kout pmlc tiw' dcvhe IJ
ILFLF D EllOIliIOJ ill_ y _h£) ( ol_lp] {'SSLII _LII r{2ill S£=11 \t, S ElL) {'[IH {'1_ I _10\_
Thv nni_ _fll hx:k onl unlll Ihc conhol i×_er is inlcnuptcd _o
lcs_*t the Io_kout I_qe]miEiv Ihe r_ason I_!J the salel> hip. "1_
les[arL [[ll_ [JlC (hcln]os[;t[ I_) [h_' ()H posilioil aild [he£ _,el [h_'
[h_*rmos[_d fo aft O_',dH[ill_ pOSitiOl_
MAINTENANCE
Lubrication
L'OMPRESSOI{ Comp]csso_ _x)n_ains la_ol} oil d_a=_zc;
wpla_c oil when lost Use Mobile 3MA POE _dl
Cleaning Coils -- ('oil sh_,uldby_ashvd ou__i_h _a_c_
Ol b[OWil OUI _,ilh coll_plvs_,or _dl NOIC [hal [h_* blOW thrn
&'sign _aus_'s (li=l and debris Io buikl up OEIthe inside _f the
coils
Cle_ln _oil annuall} (n as rcqui_vd b} h_calion and otltdoor
all _ol_dili()l_S IEISpeC{ _oi[ moEllhly aEId _[¢aE] as wqtliB2d. }hls
aw _()1 _On[iE1UOLIS I]_lO[Igh _Oi] So2_iolls I)iH a_ld d_'bris nlay
pass [h_otl[zh IJ_sI ',e [ioll. b_?c()ll_e {r;_pped bc{_'_'ll Ih_ _o_\ oJ
fins and _eshict ondenser aiffh_ If_e _ flashlight _o dcle_
mine if dill _ debris his _ol[_cled I_.'l'_ ccn _oil S_c/ioElS ( *[eaEI
I Turl] oJ_ tlilil pO_\ _'1
= Using a gzudun ho_e o_ olhc_ suit fi_k' cquipmcnL flush
_oil horn thu outside to remove (li_ I3e sure t_ flush all
dill and debris h(!nl dHin holes in base ol unit FaEI
I_lOIOI S_1{* W_tlL=Jpl OOI
TROUBLESHOOTING
Scc Fig 9 ff_lIloubk'shoolingiEil_)nl_ation
14

IT
_uP%,
JI'_'_'%_'_I I _'_'_'_'_'_1
T
Fig. g --Troubleshooting the Cooling Cycle
15

Copyright 2006 Carrier Co/potation
Manufacturer reserve_ the right to discontinue, or change at any time, specifications or designs without noti_ and without incurring obligations.
Book I 4 C_t_og igo 02.38HD000_ SI Printed in USA Form 38HD_,$1 Pg 16 2-06A 1 06 Replaces: 38HD0-351