York H*RA Series User manual

GENERAL
These outdoor units are designed to be connected to a match-
ing UPG indoor coil with sweat connection lines. These units
are factory charged with refrigerant for a matching indoor coil
plus 15 feet of field supplied line. The outside unit is designed
to be placed alongside or at the back of the home, remote from
the indoor coil. The outdoor unit has been factory run-tested
and all components of the system are ready for easy, immediate
installation.
INSPECTION
Check the unit thoroughly for shipping damage. Unusually
rough handling during shipment may loosen blowers, fan
motors, compressors, or other components. Be sure that the
unitisreadytooperatebefore installingit.Ifthereisdamage,
file a claim with the shipper. See Form 50.15-NM for more
information.
REFERENCE
Use this instruction in conjunction with the instructions for the
appropriate indoor unit, air moving system and accessories.
Installer should pay particular attention to the words NOTE,
CAUTION and WARNING.
NOTES are intended to clarify or make the installation easier.
CAUTIONS identify procedures which, if not followed carefully,
could result in personal injury, property damage or product
damage.
WARNINGS are giventoalert theinstaller that severe personal
injury, death or equipment damage may result if installation
procedures are not followed properly.
NOMENCLATURE
LIMITATIONS
Caution: The manufacturer is not responsible for the per-
formance of a mismatched system. The outdoor
unit must be installed with a compatible indoor unit
as designated in the specification data or in the
Directory of Certified Unitary Air Conditioners pub-
lished by the Air Conditioning and Refrigeration
Institute. Using unmatched components may not
only affectthe performance ofthe system,but may
also void the warranty of the equipment.
Do not install any coil in a furnace which is to be
operated during the heating season without
attaching the refrigerant lines to the coil. Allowing
the coil charge to enter the refrigerant lines
prevents excessive refrigerant pressure build-up
and possible coil damage.
The unit should be installed in accordance with all national and
localcodesandregulationswhichgoverntheinstallationofthis
type of equipment. In lieu of local codes, the equipment should
be installed in accordance with the National Electric Code, and
inaccordancewiththerecommendationsmadebytheNational
Board of Fire Underwriters.
Limitationsfor theindoor unit,coiland appropriate accessories
must also be observed.
The outdoor unit must not beinstalled with any duct workin the
air stream. The outdoor fan is the propeller type and is not
designed to operate against any additional external static
pressure.
The maximum and minimum conditions for operation must be
observed to assureasystemthat providesmaximumperformance
with minimum service.
INSTALLATION INSTRUCTION Supersedes: 550.46-N1YI (1198) 550.46-N1YI (199)
OUTDOOR
SPLIT-SYSTEM COOLING
1 Ø H*RA, H*RC and H*RE
(10, 12 and 14 SEER) MODELS
035-13606-002
®
Voltage Code
Refrigerant Line Connections
Nominal Cooling Capacity
H018 S06
1RA
Product Category
Product Generation
Product Identifier
H = Air Conditioning, Outdoor Unit
1,2 = Design Level
RA= 10 SEER Split-System Air Conditioning
RC = 12 SEER Split-System Air Conditioning
RE = 14 SEER Split-System Air Conditioning
018=18,000 BTUH
024=24,000 BTUH
030=30,000 BTUH
036=36,000 BTUH
042=42,000 BTUH
048=48,000 BTUH
060=60,000 BTUH
S = Sweat-Connect
06 = 208/230-1-60
78 = 220-1-50

CHECK ELECTRICAL POWER SUPPLY
The electrical power should be checked to determine if ade-
quate power is available, and near constant voltage can be
maintained. If there is any question concerning the power
supply, contact the local power company for corrections; oth-
erwise, unsatisfactory performance may result.
SELECTING EQUIPMENT LOCATIONS
Several important factors must be considered before selecting
the best site for the air conditioning outside unit:
•Distance to indoor coil
•Proximity to the structure
•Proximity to vents and exhaust systems
•Ability to service
•Sound transmission
•Air circulation
•Wind direction
•Relationship between structure, sun, and unit
•Distance from power source
•Water drainage
•Local codes
Locate the outside unit near enough to the indoor coil vicinity
to eliminate lengthy refrigerant line runs. Do not locate the
outside unit so it discharges air under eaves or gutters. Rain
or snow melt-off should not be able to run off a roof and down
upon the unit. Be sure vents are not located upwind from the
outside unit.
A minimum clearance of 18 inches is required on one side of
the control panel for service. A10 inch clearance is required for
the air inlet to the outdoor coil around the perimeter of the unit.
The air discharge of the unit requires a 60 inch clearance
between the top of the unit and any obstruction. See Figure 1.
The length of the refrigerant tubing, between the outdoor unit
andindoorcoil,shouldbeasshortaspossibletoavoidcapacity
and efficiency loss. Excessive spacing of the outside unit from
the home can lead to the refrigerant lines being restricted by
trampling or by being punctured by lawn mowers. Locate the
outsideunitawayfrombedroomwindowsorotherroomswhere
sound might be objectionable.
Adverse effects of prevailing winds, blowing snow or sleet on
the outdoor coil can be eliminated by placing the outside unit
where the wind does not blow across the unit. Trees, shrubs,
corners of buildings and fences standing off from the coil can
reduce capacity loss due to wind chill effect.
Provide ample clearance from shrubs to allow adequate air to
pass across the outdoor coil without leaves or branches being
pulled into the coil.
Consideration should be given to the distance and routing of
electrical service that would have to be run to connect the
outside unit.
The unit must be located outdoors and must not be connected
to duct work. It is recommended the outside unit be mounted
on a concrete pad. Top of pad should be two inches above
grade.
OUTDOOR UNIT
After the site has been selected a concrete base pad should
be provided. The concretepad should notcome incontact with
the foundation or side of the structure because sound may be
transmittedtothe residence.Theconcrete pad need notbeany
larger than the outside dimensions of the outdoor unit. The
concrete pad should be located far enough away from the
structure so the outside unit is not closer than its minimum
distances. See Figure 1. Set the outside unit upon the pad with
care to avoid damage.
Caution: Do not remove the protective caps or plugs from
the unit refrigerant connections until the refrigerant
lines are run and ready for final connection. If this
procedure is not observed, dirt and other particles
will get into the system and plug various orifices
and small tubes.
AMBIENT AIR TEMPERATURE
ON OUTDOOR COIL AIR TEMPERATURE ON INDOOR COIL
Min. °DB Max. °DB Min. °WB Max. °WB
50 120 57 72
TABLE 1 - APPLICATION LIMITATIONS
CONTROL ACCESS PANEL
10" CLEARANCE
COIL AREA
60" OVERHEAD
CLEARANCE
18" SERVICE
ACCESS CLEARANCE
WEATHERPROOF
DISCONNECT
SWITCH NEC CLASS 1 WIRING
THERMOSTAT TO FURNACE OR AIR HANDLER
TERMINAL BLOCK
NEC CLASS 2 WIRING
TO INDOOR COIL
NOTE: ALL OUTDOOR WIRING MUST
BE WEATHERPROOF
SEAL OPENING(S) WITH PERMAGUM OR EQUIVALENT
FIGURE 1 - OUTDOOR UNIT LOCATION
550.46-N1YI
2Unitary Products Group

INDOOR UNITS
Install the indoor coil in the furnace or air handler according to
the installation instructions packed with each component.
REFRIGERANT LINES
The following steps are very important when setting up a
refrigeration system and need to be followed completely to
ensure that a strong, flexible and leak tight system is obtained.
The installation of the copper refrigerant tubing must be done
with care to obtain reliable, trouble-free operation.
1. Selection of proper refrigerant tubing grade and size
2. Refrigerant line routing, cutting and fitting
3. Proper preparation of joint connections
4. Reassembling, cleaning and brazing the joint connections
5. Insulating the vapor line
6. Connecting the refrigerant lines to the indoor coil and
outdoor unit
7. Pressure leak test all joints
8. Evacuate refrigerant lines and indoor coil
9. Charging refrigeration system (if the line length is
other than 15 feet). See Table 2.
Use only ACR grade copper tubing and keep ends sealed until
joints are made.
The correct diameters of the refrigerant lines are listed on the
unit nameplate.
For best performance, select routing of refrigerant lines for
minimum distance and fewest number of bends.
Determine the path that the refrigerant lines will follow.
Starting at either the indoor coil or the outdoor unit refrigerant
line connections, carefully measure, cut, de-burr and fit copper
refrigerant lines along the path previously determined.
NOTE: If it is necessary for bends to be formed in the vapor
line, the radius should not be less than 12 inches.
Cut ends of the copper tubing square.
Remove all burrs from tubing with a reamer, file or de-burring
tool.
Slope tubing towards the outdoor unit.
When the indoor coil is above the outdoor unit the vapor line
should be sloped toward the outdoor unit with a fall of at least
1/4 inch per 5 Ft.
When the outdoor unit is above the indoor coil the horizontal
runs should be sloped toward the outdoor unit as described
above.
RE-ASSEMBLING, BRAZING AND CLEANING
OF JOINT CONNECTIONS
CAUTION: When using hard solder, an inert gas such as dry
nitrogen must be introduced and permitted to flow
through tubing during brazing to displace air and
prevent oxidation.
Remove the Schrader valve cores from the service valves.
Remove the plugs from the service valve field tubing connec-
tions. Clean the joints to be brazed.
NOTE: Do not overheat the connection to be brazed as this
can cause improper flow of solder, resulting in a weak
and leaking joint. Never apply heat directly to face of
fitting.
When brazing copper tubing it is very important to preheat the
entirejointbefore applyingthesolder.Thisisdonebysweeping
the flame steadily and evenly around the fitting, to bring both
fitting and tubing up to equal temperature before applying the
solder.
Reassemble groups of tubing and fittings, brazing several
joints instead of one joint at a time. This reduces the chance
for error in the alignment of the assembly. Replace Schrader
valvecores.DONOTOPENSERVICEVALVESATTHISTIME.
NOTE: Do not heat solder by direct contact with flame of the
torch.
INSULATION OF VAPOR LINE
Insulate vapor line with 3/8" closed cell insulation.
Slide tubing insulation onto the vapor line so that it is covered
completely from the indoor coil to the outdoor unit. Be sure that
the tubing is capped before sliding on insulation.
It is not necessary toinsulate the liquidline,unless it is subject
to excess heat in an uninsulated area.
NOTE: In areas of extreme temperatures and humidity, addi-
tional insulation may be required to prevent excessive
condensation and loss of capacity.
Do not insulate liquid line and vapor line together. Liquid line
should not be in contact with the vapor line.
REFRIGERANT LINE SUPPORT
Refrigerant lines should be supported in a way that no dips or
sags occur. We recommend four feet between supports. If
refrigerant lines are to be attached to the home structure, care
should be taken to eliminate the transmission of vibrations.
Braze refrigerant lines to indoor coil and outdoor unit. Attach
the refrigerant lines to the indoor coil first. Remove plugs from
the indoor coil, then clean joints to be brazed.Braze refrigerant
lines to the indoor coil. Attach refrigerant lines to the outdoor
unit.
LIQUID OD VAPOR OD R-22 CHARGE, OZ/FT
3/8" 5/8" 0.66
3/8" 3/4" 0.68
3/8" 7/8" 0.70
3/8" 1-1/8" 0.76
TABLE 2 - REFRIGERANT LINE CHARGES
550.46-N1YI
Unitary Products Group 3

CHARGING AND LEAK TESTING
On systems with or without service valves the refrigerant
should be recovered or recycled in accordance with EPA
regulations. In some cases this may require putting piercing
valves on both the high and low sides of the system.
WARNING:
DO NOT vent refrigerant to the outdoors.
When recovering refrigerant from a system, with a burnout,
follow a safe procedure due to possible contamination.
CAUTION: Avoid getting the refrigerant in the eyes or on the
skin.
Contaminated refrigerant must be recovered and
returned to the local refrigeration supply house for
proper disposition.
TOTAL LINE LENGTH
Units should be installed only with approved system combina-
tion (indoor/outdoor) as specified in the Technical Guide.
For systems with total line length exceeding 50 feet, see
APPLICATION DATA, 690.01-AD1V(1291) and worksheet
690.01-AD1.1V(791) "General Piping Recommendations and
Refrigerant Line Length" for vapor and liquid line sizing, cali-
bration of liquid line pressure loss or gain, determination of
vapor line velocity, elevation limitations, orifice connections,
system charging, traps, etc.
Systems with liquid line pressure loss or gain greater than 11
psi must be provided with corrected orifice size as noted in
Form 690.01 - AD1V (1291).
ORIFICE SELECTION (ORIFICE TYPE COILS
ONLY)
NOTE: The proper orifice must be installed in the evaporator
coil liquid line connection prior to the connection of the
refrigerant lines.
WARNING:Coil is under 35 psig (inert gas) pressure,
Each coil hasan orifice installed inthe fitting betweenthe liquid
line connection and distributor. The orifice is identified on a
label next to the liquid line connection.
The orifice shipped with the indoor coil is based on the “most
sold” combination. The indoor coil orifice may be changed,
depending on the capacity and efficiency of the outdoor unit,
elevation differences, and/or long total line lengths. An addi-
tional orifice(s) is shipped with most outdoor units for the most
commonly required replacement combinations. Other sizes
must be ordered from the Source 1 Parts Department if re-
quired.
See the appropriate Data Sheet for the correct orifice size. If
the orifice size matches, nothing further is required and the
refrigerantlinesmaybeconnectedpertheoutdoorunitinstruction.
However,ifanotherorificeshouldbeused,seethecoil instruction
for details to change to change the orifice in the coil.
OPENING BASE VALVES
All models in this series have brass service valves. These
valves are not back seating. Opening or closing valve does not
close service port. Service ports have Schrader valves for
gauge connections. Use back-up wrench on valve body when
removing cap to open or close the valve. To open, insert hex
wrench into stem and back out counter clockwise until stem
just touches retaining ring.
CAUTION: Ifthevalvestemisbackedoutbeyondtheretaining
ring, system pressure could force the stem out of
the valve body and possibly cause personal injury.
In the event that the retaining ringis missing donot
attempt to open the valve.
All caps must be replaced to prevent leaks.
Replace valve cap finger tight, then tighten an additional 1⁄6of
aturnwithawrench,usingaback-upwrenchonthevalvebody.
OIL TRAPPING
When the outdoor unit is above the indoor coil oil trapping is
necessary.PleaserefertoAPPLICATIONDATA,690.01-AD1V
(1291) and worksheet 690.01-AD1.1V (791) "General Piping
Recommendations and Refrigerant Line Length".
Check the system for correct charge after all components of
thesystemhavebeeninstalled,connectedandwiredcorrectly.
Connect service gauges to the suction and discharge service
ports.
Allow unit to operate until system pressures and temperatures
have stabilized, making sure that the pressure and tempera-
tures align with unit service data. If not, check system charge
and adjust if necessary.
ELECTRICAL WIRING
WARNING:To prevent electrical shock, open remote disconnect
so electrical supply to outdoor unit is shut off
contactor does not open both sides of the line volt
electrical circuit.
POWER SUPPLY
All wiring must comply with N.E.C. and local codes. See rating
plate and product data sheet for volts, frequency, phase,
maximum fuse size and minimum branch circuit ampacity.
Refer to the wiring diagram inside the unit control box cover
before connecting to power supply.
1. The line voltage service wiring for the outdoor unit must
include a disconnect switch located with and insightof the
outdoor unit.
LIQUID
LINE
TAPE
INSULATED VAPOR LINE
CORRECT
INCO RRECT
SHEET METAL HANGER
FIGURE 2 - Vapor Line Insulating
550.46-N1YI
4Unitary Products Group

2. Use the correct size fuse or circuit breaker as listed on the
unit rating plate and data sheet. See data sheet for mini-
mum recommended wire size. If using nonmetallic-
sheathed cable (NM or NM-B) ampacities shall be that of
60°C conductors per NEC 336-26.
3. Wiring connections.
Two are provided in the control box:
a. One for low voltage wiring.
b. One entrance for high voltage Ll and L2
The reversible High Voltage Conduit Plate is factory
installed for 1/2" conduit connections. For 3/4" conduit,
removethescrewholdingtheplateinplaceandreverse
the location of the holes. For 1" conduit, remove the
conduit plate and discard. Re - install screw to maintain
the integrity of the unit structure, regardless of the
conduit being used. See Figures 3 and 4.
4. Power connection to the unit is facilitated by screw termi-
nals, marked Ll and L2 on the outdoor unit contactor. See
Figures 3 and 4.
5. Ground the outdoor unit using the ground lug provided.
Unless the outdoor unit is grounded through proper wiring
totheserviceentranceground,asuitableseparateground
should be provided at the outdoor unit.
CONTACTOR
START RELAY
(N ot on all M odels)
FAN
MOTOR
PLUG
DUAL
RUN / FAN
CAPACITOR
START
CAPACITOR
(N ot on all M odels)
"F IN G E R E D " B U S IN G
GROUND LUG
LO W
VOLTAG E
BOX
REVERSIBLE IG VO LTAG E CO NDUIT PLATE
L1 L2
FIGURE 3 - TYPICAL CONDENSING UNIT CONTROL BOX
CONTACTOR
START RELAY
(N ot on all M odels)
FAN
MOTOR
PLUG
DUAL
RUN / FAN
CAPACITOR
START
CAPACITOR
(N ot on all M odels)
"F IN G E R E D "
B U S IN G GROUND LUG
LO W
VOLTAG E
BOX
REVERSIBLE IG VO LTAG E CO NDUIT PLATE
L1
L2
FIGURE 4 - TYPICAL CONDENSING UNIT CONTROL BOX
(Start Components Shown)
(Start Components Shown)
550.46-N1YI
Unitary Products Group 5

CAUTION: Casing or cabinet must be permanently grounded
in accordance with National Electric Code or other
applicable local codes.
LOW VOLTAGE
Control wiring may vary, depending upon the type of thermo-
stat, furnace or air handler being connected.
Low voltage wiring diagrams can be found with the furnace or
air conditioning blower package installation instructions.
Pig-tail connector wires (two blue or one blue, one brown) are
provided from the low voltage pull-in coil on the contactor to a
section of the control box. A “fingered”bushing is provided in
the low voltage knockout hole. If 1⁄2" conduit is used for the low
voltage wiring, the bushing is to be removed.
1. Route the low voltage cable through the fingered bushing
in the low voltage junction box. See Figure 3 and 4.
2. Using wire nuts, connect low voltage wiring as shown in
Figure 5.
3. A minimum 19 AWG wire gauge for total lengths not
exceeding 130 feet must be used in connecting the low
voltage control wiring between the outdoor unit, furnace
and thermostat. For longer low voltage control wiring
lengths, consult the N.E.C.
Connect thermostat and control package wiring as shown
in Figure 5 and per the instructions packed with those
pieces.
SYSTEM CHARGE
The factory charge in the outdoor unit includes enough charge
for the unit and a most sold matched evaporator. Some indoor
coil matches may require some additional charge. See Tabular
Data sheet provided in unit literature packet.
Sweat connect units also include sufficient charge for 15 feet
of lines. Pre-charged line lengths are factory charged with the
correct amount of refrigerant required. Table 2 lists the refrig-
erant line charges.
The “TOTAL SYSTEM CHARGE”must be permanently
stamped on the unit data plate.
Total system charge is determined as follows:
1. Determine outdoor unit charge from tabular data sheet.
2. Determine indoor coil adjustment from tabular data sheet.
3. Calculate the line charge using Table 2 factors. Calculate
over 15 feet of sweat lines for sweat connect units.
NOTE: For sweat connect lines, the line charge over 15 feet
should be included on the data plate and must be
added to the system.
4. Total system charge = item 1 + item 2 + item 3.
5. Permanently stamp the unit data plate with the total
amount of refrigerant in the system.
Use one of the following charging methods whenever addi-
tional refrigerant is required for the system charge.
CAUTION: Refrigerant charging should only be carried out by
a qualified air conditioning contractor.
Measurement Method
If a calibrated charging cylinder or accurate weighing device is
available, add refrigerant accordingly.
CAUTION: Compressordamagewilloccurifsystemisimprop-
erly charged. On new system installations charge
system per R-22 charge information label and fol-
low guidelines in this instruction.
Checkflarecapsonserviceportstobesuretheyareleaktight.
DO NOT OVER TIGHTEN (between 40 and 60 inch - lbs.
maximum).
Superheat Charging Method
NOTE: Use this method only during system maintenance and
repair.
1. Operate system until temperatures and pressures stabi-
lize (minimum of 10 minutes).
2. Measure and record indoor wet bulb (WB) temperature
using a sling psychrometer and the outdoor dry bulb (DB)
temperature using a thermometer.
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FIGURE 5 - TYPICAL FIELD WIRING
550.46-N1YI
6Unitary Products Group

INDOOR
WB °F* OUTDOOR DB°F
55 60 65 70 75 80 85 90 95 100 105 110 115
50 97
52 12 10 6
54 14 12 10 7
56 17 15 14 10 6
58 20 18 16 13 9 5
60 23 21 19 16 12 8 6
62 26 24 22 19 16 12 8 5
64 29 27 24 21 18 15 11 9 6
66 32 31 30 24 23 18 15 11 9 6
68 35 33 30 27 24 21 19 16 14 12 9 6
70 35 33 30 28 25 22 20 18 15 13 11 8
72 35 33 30 28 26 24 20 20 17 15 14
74 34 31 30 27 25 23 22 20 18
76 35 33 31 29 27 26 25 23
*Evaporator Entering Air °F
TABLE 3 - Superheat Value
SUCTION
PRESSURE
PSIG
(Service Port)
SUCTION SERVICE VALVE SUPERHEAT
0**246810121416182022242628303234
61.5 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69
64.2 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71
67.1 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73
70.0 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75
73.0 43 45 47 49 51 53 55 57 59 61 63 63 67 69 71 73 75 77
76.0 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79
79.2 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81
82.4 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83
** Saturation Temperature
TABLE 4 - Temperature and Pressure
TEMP.
°FPRESSURE
PSIG TEMP.
°FPRESSURE
PSIG TEMP.
°FPRESSURE
PSIG TEMP.
°FPRESSURE
PSIG TEMP.
°FPRESSURE
PSIG
45 76.02 60 101.62 75 132.22 90 168.40 105 210.75
46 77.58 61 103.49 76 134.45 91 171.02 106 213.81
47 79.17 62 105.39 77 136.71 92 173.67 107 216.90
48 80.77 63 107.32 78 138.99 93 176.35 108 220.02
49 82.39 64 109.26 79 141.30 94 179.06 109 223.17
50 84.03 65 111.23 80 143.63 95 181.80 110 226.35
51 85.69 66 113.22 81 145.99 96 184,56 111 229.56
52 87.38 67 115.24 82 148.37 97 187.36 112 232.80
53 89.08 68 117.28 83 150.78 98 190.18 113 236.08
54 90.81 69 119.34 84 153.22 99 193.03 114 239.38
55 92.56 70 121.43 85 155.68 100 195.91 115 242.72
56 94.32 71 123.54 86 158.17 101 198.82 116 246.10
57 96.11 72 125.67 87 160.69 102 201.76 117 249.50
58 97.93 73 127.83 88 163.23 103 204.72 118 252.94
59 99.76 74 130.01 89 165.80 104 207.72 119 256.41
TABLE 5 - R-22 Saturation Properties
550.46-N1YI
Unitary Products Group 7

3. Measure and record the suction pressure at the suction
service valve port.
4. Using Table 4, note the superheat value corresponding to
the intersection of the indoor wet bulb and the outdoor dry
bulb.
5. With the superheat value obtained in step 4 and the
suction pressure value from step 3, find the intersection of
the values in Table 5. This is the required suction tube
temperature at the suction service valve.
6. To bring the tube temperature in line with the required
value from Table 5, add refrigerant to the service port to
cause the tube temperature to fall and reclaim refrigerant
to cause the temperature to rise.
CHECK-OUT PROCEDURE
Use the following list to see that nothing was over looked.
Have all braze joints on refrigerant lines been leaked
checked?
Have base valves been opened?
Have all refrigerant lines been secured and isolated
properly?
Istheindoorcoildrainhookedupanddrainingfreely?Pour
water in drain pan.
Is air filter installed and clean?
Is blower motor speed set correctly?
SYSTEM OPERATION CHECK-OUT
STEP 1 - With thermostat set to the OFF position, close
disconnect switch or switches to complete circuits to condens-
ingunit,furnaceorairhandler.Setthermostattocallforcooling.
STEP 2 - After the system starts, check the voltage and
amperage at the condensing unit contactor.
STEP 3 - If voltage is not within 10% of rated voltage, or
amperage greatly exceeds nameplate amperage, shut down
the system and contact the local power company for correc-
tions; otherwise unsatisfactory performance may result.
STEP 4 - With the system in operation, check the condensing
unit for unusual noises and undue vibration.
STEP 5 - Allow the system to operate until it is balanced or
stabilized (approximately 30 minutes), before making further
checks.
STEP 6 - Remove manifold gage hoses and install cap on
Schrader valves.
INSTALLER
After installation is complete, place unit data sheet and instal-
lation instructions in customer envelope and give to home
owner.
Subject to change without notice. Printed in U.S.A
Copyright  by Unitary Products Group 1999. All Rights Reserved.
Heating and Air Conditioning
Unitary Products Group
5005 York Drive, Norman, Oklahoma 73069 Code: SBY 550.46-N1YI (199)