8

RefrigerantCharge

The 38HDR and 38QRR units can be matched with mu ltiple
outdoor units and thus additionalcharge might be required when
matchedwith the 40QAC or 40QAQ units.
Table5 – AdditionalCharge
Additional Charge lb. (kg.)
UnitSize 38HDR 38QRR
018 0.7(0.32) 0.7(0.32)
024 1.3(0.59) 0.8(0.36)
030 1.4(0.64) 0
036 0.2(0.1) 0.5 (0.23)
048 0.2(0.1) 0
060 0.5(0.23) 0
Note:The aboveadditional charge isrequired amount for line lengthsup to
25ft (7.6 m). Forline lengths exceeding25 ft (7.6 m), additionalcharge will
berequired. Refertothe Duct Free Splits Long Line Guide.

MeteringDev ice

The 40QAC and 40QAQ u nits use an accurator or a TXV as
shownin Table 6.
Table6 – A ccurator Sizes
UnitSize CoolingOnly HeatPumps
40QAC 40QAQ 38QRR
018 TVX 49 40
024 TVX 55 43
030 TVX 65 55
036 TVX 70 63
048 TVX 80 73
060 TVX TXV 80
NOTE:P istons are supplied with either th ein door or outdoor units.
Powerand Connecting Cables --Field Supplied

Power:

SThemain power is suppliedto both the indoor and outdoor
units.
SConsultlocal building codes,NEC (National ElectricCode) or
CEC(Canadian ElectricCode) for any special requirements.
SUseTable7 for the electricalrequirementsfor the outdoor units
andTable 8 for the indoorunits to correctly sizethe cables and
disconnectswitches.

Control Wiring

Thermostatwires should be used for control wiringbetween the
indoor and outdoor units. A two conductor cable is required for
thecooling only units and a seven conductor cableis required on
heatpumps. 18AWG is recommendedfor any length up to 200 ft
(61.0m).
User Interface --Finish ed Goods Accessory
Any of the followingthree thermostats can be used dependingon
thetype of system on hand and the desiredfeatures. Refer to Table
9to select the properthermostat.
Table7 – 3 8HDR / QRR Electrical Requ irements
UNITSIZE V --- P H --- H z
38HDR 38QRR
MINCKT AMPS FUSE/HACR BKR
AMPS MINCKT AMPS FUSE/HACR BKR AMPS
018 208/230---1---60 12.1 20 12.1 20
024 208/230---1---60 17.7 25 18.8 30
030 208/230---1---60 19.1 30 17.5 30
036
208/230---1---60 19.1 30 20.9 30
208/230---3---60 13.0 20 14.1 20
460 --- 3 --- 60 7.9 15 7.9 15
048
208/230---1---60 26.4 40 34.6 50
208/230---3---60 17.9 25 22.4 30
460 --- 3 --- 60 8.4 15 10.0 15
060
208/230---1---60 34.5 60 34.5 60
208/230---3---60 21.5 30 23.6 40
460 --- 3 --- 60 10.6 15 10.6 15
Table8 – 4 0QAC / QAQ ElectricalRequirements
UNIT VOLTAGE
V--- P h --- 60 Hz
40QAC 40QAQ
MCA MOCP MCA MOCP
024 208/230---1 0.63 15.0 9.29 15.0
036 208/230---1 1.60 15.0 17.70 20.0
048 208/230---1 2.00 15.0 23.80 25.0
060 208/230---1 3.30 15.0 28.70 30.0
Table9 – Thermo stat Selection
ModelNumb er
SystemType
CoolingOnly & HP
53DFS250---SL
CoolingOnly
53DFS250---FS
CoolingOnly
53DFST2---NP
Features
7Day Prog rammable √√---
5+1+1Day Pro grammable --- --- √
RemoteRoom Sensor √ √
DryContact Equipped √√---

40QAC/38HDR -- 40QAQ/38QR

R