York Air Conditioner 12 User Manual

INSTALLATION  
INSTRUCTION  
OUTDOOR SPLIT-SYSTEM  
AIR CONDITIONER  
MODELS: 10, 12, 13 AND 14 SEER  
1 PHASE - 1.5 TO 5 TONS  
TABLE OF CONTENTS  
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . 2  
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
CHECK ELECTRICAL POWER SUPPLY . . . . . . . . . 2  
SELECTING EQUIPMENT LOCATION . . . . . . . . . . 2  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . .4  
OUTDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
INDOOR UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
REFRIGERANT LINE (SWEAT FIT) . . . . . . . . . . . . . 4  
INSULATION OF VAPOR LINE . . . . . . . . . . . . . . . . 4  
RE-ASSEMBLING, BRAZING AND CLEANING OF  
JOINT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . 5  
REFRIGERANT LINE SUPPORT . . . . . . . . . . . . . . . 5  
CHARGING AND LEAK TESTING . . . . . . . . . . . . . . 5  
TOTAL LINE LENGTH . . . . . . . . . . . . . . . . . . . . . . . 5  
ORIFICE SELECTION (ON SWEAT FIT COILS) . . . 5  
REFRIGERANT VALVE OPERATION . . . . . . . . . . . 6  
OIL TRAPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . .8  
MEASUREMENT METHOD . . . . . . . . . . . . . . . . . . . 8  
SUPERHEAT CHARGING METHOD . . . . . . . . . . . . 8  
CHECKOUT PROCEDURE . . . . . . . . . . . . . . . . . . 10  
SYSTEM OPERATION CHECKOUT . . . . . . . . . . . 10  
CAUTION:READ ALL SAFETY GUIDES BEFORE  
YOU START TO INSTALL YOUR UNIT.  
SAVE THIS MANUAL  
035-13606-003 Rev. A (202)  
035-13606-003 Rev. A (202)  
A minimum clearance of 18 inches is required for service at  
the control panel and compressor compartments access. A  
10 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.  
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  
outdoor unit.  
The length of the refrigerant tubing, between the outdoor unit  
and indoor coil, should be as short as possible to avoid  
capacity and efficiency loss. Excessive spacing of the out-  
door unit from the home can lead to the refrigerant lines  
being restricted by trampling or by being punctured by lawn  
mowers. Locate the outdoor unit away from bedroom win-  
dows or other rooms where sound might be objectionable.  
The unit must be located outdoors and must not be con-  
nected to duct work. It is recommended the outdoor unit be  
mounted upon a solid base that will not shift or settle. Top of  
base should be two inches above grade. Thought should be  
given to water drainage away from the outdoor unit. Drain  
holes in the base pan must be kept clear.  
Adverse effects of prevailing winds, blowing snow or sleet  
onto the outdoor coil can be eliminated by placing the outdoor  
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.  
MINIMUM 24” SERVICE ACCESS  
CLEARANCE ON ONE SIDE  
THERMOSTAT  
TO FURNACE OR  
AIR HANDLER  
TERMINAL BLOCK  
60” OVERHEAD  
CLEARANCE  
WEATHERPROOF  
DISCONNECT  
SWITCH  
NEC CLASS 1 WIRING  
NEC CLASS 2 WIRING  
10” CLEARANCE  
COIL AREA  
TO INDOOR COIL  
SEAL OPENING(S) WITH  
PERMAGUM OR EQUIVALENT  
NOTE: ALL OUTDOOR WIRING  
MUST BE WEATHERPROOF.  
CONTROL ACCESS PANEL  
FIGURE 1 : TYPICAL RESIDENTIAL OUTDOOR UNIT LOCATION  
Unitary Products Group  
3
035-13606-003 Rev. A (202)  
Use only ACR grade copper tubing and keep ends sealed  
until joints are made.  
INSTALLATION  
OUTDOOR UNIT  
The correct diameters of the refrigerant lines are listed in the  
Tabular Data Sheet.  
After the site has been selected, a solid base pad that will not  
shift or settle should be provided. The base pad should not  
come in contact with the foundation or side of the structure  
because sound may be transmitted to the residence. The pad  
should be located far enough away from the structure so the  
outdoor unit is not closer than its minimum distances. See  
Figure 1. Set the outdoor unit upon the pad with care to avoid  
damage..  
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 cop-  
per 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.  
Do not remove the protective caps or plugs from  
the unit refrigerant connections until the refriger-  
ant lines are run and ready for final connection. If  
this procedure is not observed, dirt and other par-  
ticles will get into the system and plug various ori-  
fices and small tubes.  
Remove all burrs from tubing with a reamer, file or de-burring  
tool.  
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 feet.  
INDOOR UNITS  
When the outdoor unit is above the indoor coil the horizontal  
runs should be sloped toward the outdoor unit as described  
above.  
Install the indoor coil in the furnace or air handler according to  
the installation instructions packed with each component.  
REFRIGERANT LINE (SWEAT FIT)  
INSULATION OF VAPOR LINE  
The following steps are very important when setting up a  
refrigeration system and need to be followed completely to  
insure that a strong, flexible and leak tight system is obtained.  
Insulate vapor line with 3/8" (or that required by local code)  
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.  
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. Insulating the vapor line.  
It is not necessary to insulate the liquid line, unless it is sub-  
ject to excess heat in an uninsulated area.  
NOTE: In areas of extreme temperatures and humidity,  
additional insulation may be required to prevent excessive  
condensation and loss of capacity.  
4. Connecting the refrigerant lines to the indoor coil and  
outdoor unit.  
5. Proper preparation of joint connections.  
Do not insulate liquid line and vapor line together. Liquid line  
should not be in contact with the vapor line. See Figure 2.  
6. Reassembling, cleaning and brazing the joint connec-  
tions.  
7. Pressure leak test all joints.  
Tape  
8. Evacuate refrigerant lines and indoor coil.  
Liquid  
Line  
9. Charging refrigeration system (If the line length is other  
than 15 feet). See Table 2.  
Incorrect  
Table 2: REFRIGERANT LINE CHARGE  
LIQUID OD  
3/8"  
VAPOR OD  
5/8"  
R-22 CHARGE, OZ/FT  
0.66  
0.68  
0.70  
0.76  
Sheet Metal Hanger  
Correct  
3/8"  
3/4"  
Insulated Vapor Line  
3/8"  
7/8"  
3/8"  
1-1/8"  
FIGURE 2 : INSULATION OF VAPOR LINE  
4
Unitary Products Group  
035-13606-003 Rev. A (202)  
When recovering refrigerant from a system, with a burnout,  
follow a safe procedure due to possible contamination.  
RE-ASSEMBLING, BRAZING AND CLEANING OF  
JOINT CONNECTIONS  
Avoid getting the refrigerant in the eyes or on the  
skin.  
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.  
Contaminated refrigerant must be recovered and returned to  
the local refrigeration supply house for proper disposition.  
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.  
TOTAL LINE LENGTH  
Units should be installed only with approved system combina-  
tion (indoor/outdoor) as specified in the Technical Guide.  
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. Do  
not heat solder by direct contact with flame of the torch.  
For systems with total line length exceeding 50 feet, see  
APPLICATION DATA and work sheet "General Piping Rec-  
ommendations and Refrigerant Line Length" for vapor and  
liquid line sizing, calibration of liquid line pressure loss or  
gain, determination of vapor line velocity, elevation limita-  
tions, orifice connections, system charging, traps, etc.  
When brazing copper tubing it is very important to preheat  
the entire joint before applying the solder. This is done by  
sweeping the flame steadily and evenly around the fitting, to  
bring both fitting and tubing up to equal temperature before  
applying the solder.  
Systems with liquid line pressure loss or gain greater than 11  
psi must be provided with corrected orifice size as noted in  
.APPLICATION DATA.  
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  
Valve cores. DO NOT OPEN SERVICE VALVES AT THIS  
TIME.  
ORIFICE SELECTION (ON SWEAT FIT COILS)  
NOTE: The proper orifice must be installed in the indoor coil  
liquid line connection prior to the connection of the refrigerant  
lines.  
Clean joint connection immediately after brazing with wet rag.  
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 vibra-  
tions. 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 refrig-  
erant lines to the outdoor unit.  
Coil is under 30 to 35 psig (inert gas) pressure.  
Each coil has an orifice installed in the fitting  
between the liquid line connection and distributor.  
The orifice is identified on a label next to the liq-  
uid line connection.  
The orifice shipped with the outdoor unit is based on the  
“most sold” combination, but it may be changed, depending  
on the capacity and efficiency of the outdoor unit, elevation  
differences, and/or long total line lengths. An additional ori-  
fice(s) is shipped with most outdoor units for the most com-  
monly required replacement combinations. Other sizes must  
be ordered from Source 1 Parts if required.  
CHARGING AND LEAK TESTING  
On systems with or without service valves the refrigerant  
should be recovered or recycled in accordance with EPA reg-  
ulations. In some cases this may require putting piercing  
valves on both the high and low sides of the system.  
See the appropriate Tabular Data Sheet for the correct orifice  
size and charge adder. If the orifice size matches, nothing fur-  
ther is required and the refrigerant lines may be connected  
per the outdoor unit instruction. However, if another orifice  
should be used, see the coil instruction for details to change  
the orifice in the coil.  
DO NOT vent refrigerant to the outdoors.  
Unitary Products Group  
5
035-13606-003 Rev. A (202)  
ELECTRICAL WIRING  
REFRIGERANT VALVE OPERATION  
To prevent electrical shock, open remote discon-  
nect so electrical supply to outdoor unit is shut  
off. Contactor does not open both sides of the  
208/230 volt electrical circuit.  
All outdoor units are shipped with the service  
valves in the closed position. After installation of  
the refrigerant and proper evacuation, make sure  
that all valves are in the open position and that  
the caps are securely tightened before turning  
ON the electrical power to the outdoor unit.  
POWER SUPPLY  
All wiring must comply with N.E.C. and local codes. See rat-  
ing plate and product data sheet for volts, frequency, phase,  
maximum fuse size and minimum branch circuit ampacity.  
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  
Refer to the wiring diagram inside the unit control box cover  
before connecting to power supply.  
1. The 208/230 volt single phase line voltage service wiring  
for the outdoor unit must include a disconnect switch  
located within sight of the outdoor unit.  
just touches retaining ring.  
2. Use the correct size fuse or circuit breaker as listed on  
the unit rating plate and data sheet. If using nonmetallic-  
sheathed cable (NM or NM-B) ampacities shall be that of  
60° C conductors per N.E.C 336-26.  
If the valve stem is backed out beyond the retain-  
ing ring, system pressure could force the stem  
out of the valve body and possibly cause per-  
sonal injury. In the event that the retaining ring is  
missing do not attempt to open the valve.  
3. Wiring connections. - Two are provided in the control  
box:  
a. One for low voltage wiring.  
b. One entrance for high voltage L1 and L2.  
Some units may have factory installed 1-1/8" ball valves. To  
open the valve, remove the brass valve stem cap, located on  
the side of the valve, with an adjustable wrench. Next, turn  
the valve stem 1/4 turn CCW (away from unit).  
The adjustable High Voltage Conduit Plate is factory installed  
for 1/2" conduit connections. For 3/4" conduit, remove the  
screw holding the plate in place and adjust 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 9, 10 & 11.  
All caps must be replaced to prevent leaks.  
Replace valve cap finger tight, then tighten an additional 1/6  
of a turn with a wrench, using a back-up wrench on the valve  
body.  
4. Power connection to the unit is facilitated by screw termi-  
nals, L1 and L2 on the outdoor unit contactor. See Fig-  
ures 9, 10 & 11.  
OIL TRAPPING  
5. Ground the outdoor unit using the ground lug provided.  
Unless the outdoor unit is grounded through proper wir-  
ing to the service entrance ground, a suitable separate  
ground should be provided at the outdoor unit.  
When the outdoor unit is above the indoor coil oil trapping is  
necessary. Please refer to APPLICATION DATA, 690.01-  
AD1V (1296) and worksheet 690.01-AD1.1V (791) “General  
Piping Recommendations and Refrigerant Line length".  
6. Use copper conductors only.  
Check the system for correct charge after all components of  
the system have been installed, connected and wired cor-  
rectly.  
Connect service gauges to low pressure port and discharge  
service ports.  
Casing or cabinet must be permanently grounded  
in accordance with National Electric Code or  
other applicable local codes.  
Allow unit to operate until system pressures and tempera-  
tures have stabilized, making sure that the pressure and tem-  
perature align with unit service data. If not, check system  
charge and adjust if necessary.  
6
Unitary Products Group  
035-13606-003 Rev. A (202)  
LOW VOLTAGE  
1. Route the low voltage cable through the fingered bush-  
ing in the low voltage junction box. See Figures 9, 10 &  
11.  
Control wiring may vary depending upon the type of thermo-  
stat and furnace being connected.  
2. Using wire nuts, connect the low voltage wiring within the  
low voltage box.  
Low voltage wiring diagrams can be found with the furnace or  
air conditioning blower package installation instructions.  
3. A minimum of 19 AWG wire must be used in connecting  
the low voltage control wiring between the outdoor unit,  
air handler thermostat, and outdoor thermostat. For  
longer low voltage control wiring lengths, consult the  
N.E.C.  
Pig-tail connector wires (2 blue or 1 blue, 1 brown) are pro-  
vided from the low voltage pull-in coil on the contactor to a  
section of the control box (See Figure 12). A “Fingered” bush-  
ing is provided in the low voltage knockout hole. If 1/2" con-  
duit is used for the low voltage wiring, the bushing is to be  
removed.  
Connect thermostat and control package wiring as shown in  
Figure 12 and per the instructions packed with those pieces.  
CONTACTOR  
START RELAY  
(Not on all Models)  
DUAL  
RUN/FAN  
CAPACITOR  
FAN  
MOTOR  
PLUG  
START  
CAPACITOR  
(Not on all Models)  
LOW  
VOLTAGE  
BOX  
“FINGERED”  
BUSHING  
GROUND  
LUG  
REVERSIBLE HIGH VOLTAGE  
CONDUIT PLATE  
FIGURE 3 : Typical Condensing Unit Control Box (Start Components Shown)  
START RELAY  
CONTACTOR  
DUAL  
RUN/FAN  
CAPACITOR  
LOW  
VOLTAGE  
BOX  
FAN  
MOTOR  
PLUG  
“FINGERED”  
BUSHING  
ADJUSTABLE HIGH VOLTAGE  
CONDUIT PLATE  
GROUND LUG  
FIGURE 4 : Typical Condensing Unit Control Box (Start Components Shown)  
Unitary Products Group  
7
035-13606-003 Rev. A (202)  
E
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES  
POWER WIRING  
208/230-1-60  
230 - 1 - 50  
POWER WIRING  
CONTROL WIRING  
FACTORY WIRING  
24 VOLT CONTROL WIRING  
MINIMUM 18 GA. WIRE  
(NEC CLASS 2)  
FURNACE OR AIR HANDLER TERMINAL BLOCK  
Y R G W  
C
*
TERMINAL W IS ONLY  
REQUIRED ON SYSTEMS  
WITH HEAT.  
CONTACTOR  
TERMINALS  
*
GND.  
LUG  
COIL  
Y
R
G
W
ROOM THERMOSTAT  
CONDENSING UNIT  
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.  
FIGURE 5 : TYPICAL FIELD WIRING  
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.  
Refrigerant charging should only be carried out  
by a qualified air conditioning contractor.  
MEASUREMENT METHOD  
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.  
If a calibrated charging cylinder or accurate weighing device  
is available, add refrigerant accordingly.  
The “TOTAL SYSTEM CHARGE” must be permanently  
stamped on the unit data plate.  
Compressor damage will occur if system is  
improperly charged. On new system installations  
charge system per R-22 charge information label  
and follow guidelines in this instruction.  
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.  
Check flare caps on service ports to be sure they  
are leak tight. DO NOT OVER TIGHTEN  
(between 40 and 60 inch - lbs. maximum).  
3. Calculate the line charge using Table 2 factors. Calculate  
over 15 feet of sweat lines for sweat connect units.  
SUPERHEAT CHARGING METHOD  
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.  
NOTE: Use this method only during system maintenace  
and repair.  
4. Total system charge = item 1 + item 2 + item 3.  
1. Operate system until temperatures and pressures stabi-  
lize (minimum of 10 minutes).  
5. Permanently stamp the unit data plate with the total  
amount of refrigerant in the system.  
2. Measure and record indoor wet bulb (WB) temperature  
using a sling psychrometer and the outdoor dry bulb  
(DB) temperature using a thermometer.  
Use one of the following charging methods whenever addi-  
tional refrigerant is required for the system charge.  
8
Unitary Products Group  
035-13606-003 Rev. A (202)  
Table 3: SUPERHEAT VALUE  
OUTDOOR DB°F  
INDOOR WB  
°F1  
55  
9
60  
7
65  
70  
75  
80  
85  
90  
95 100 105 110 115  
50  
52  
54  
56  
58  
60  
62  
64  
66  
68  
70  
72  
74  
76  
12  
14  
17  
20  
23  
26  
29  
32  
35  
10  
12  
15  
18  
21  
24  
27  
31  
33  
35  
6
10  
14  
16  
19  
22  
24  
30  
30  
33  
35  
7
10  
13  
16  
19  
21  
24  
27  
30  
33  
6
9
5
12  
16  
18  
23  
24  
28  
30  
34  
8
6
12  
15  
18  
21  
25  
28  
31  
35  
8
5
11  
15  
19  
22  
26  
30  
33  
9
6
11  
16  
20  
24  
27  
31  
9
6
14  
18  
20  
25  
29  
12  
15  
20  
23  
27  
9
6
13  
17  
22  
26  
11  
15  
20  
25  
8
14  
18  
23  
1.  
Evaporator Entering Air °F  
Table 4: TEMPERATURE AND PRESSURE  
SUCTION  
SUCTION SERVICE VALVE SUPERHEAT  
PRESSURE  
01  
PSIG  
(Service Port)  
2
4
6
8
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
30  
32  
34  
61.5  
64.2  
67.1  
70.0  
73.0  
76.0  
79.2  
82.4  
35  
37  
39  
41  
43  
45  
47  
49  
37  
39  
41  
43  
45  
47  
49  
51  
39  
41  
43  
45  
47  
49  
51  
53  
41  
43  
45  
47  
49  
51  
53  
55  
43  
45  
47  
49  
51  
53  
55  
57  
45  
47  
49  
51  
53  
55  
57  
59  
47  
49  
51  
53  
55  
57  
59  
61  
49  
51  
53  
55  
57  
59  
61  
63  
51  
53  
55  
57  
59  
61  
63  
65  
53  
55  
57  
59  
61  
63  
65  
67  
55  
57  
59  
61  
63  
65  
67  
69  
57  
59  
61  
63  
63  
67  
69  
71  
59  
61  
63  
65  
67  
69  
71  
73  
61  
63  
65  
67  
69  
71  
73  
75  
63  
65  
67  
69  
71  
73  
75  
77  
65  
67  
69  
71  
73  
75  
77  
79  
67  
69  
71  
73  
75  
77  
79  
81  
69  
71  
73  
75  
77  
79  
81  
83  
1.  
Saturation Temperature  
Table 5: R-22 SATURATION PROPERTIES  
TEMP.  
°F  
PRESSURE  
PSIG  
TEMP.  
°F  
PRESSURE  
PSIG  
TEMP.  
PRESSURE  
PSIG  
TEMP.  
°F  
PRESSURE  
PSIG  
TEMP.  
°F  
PRESSURE  
PSIG  
°F  
75  
76  
77  
78  
79  
45  
46  
47  
48  
49  
76.02  
77.58  
79.17  
80.77  
82.39  
60  
61  
62  
63  
64  
101.62  
103.49  
105.39  
107.32  
109.26  
132.22  
134.45  
136.71  
138.99  
141.30  
90  
91  
92  
93  
94  
168.40  
171.02  
173.67  
176.35  
179.06  
105  
106  
107  
108  
109  
210.75  
213.81  
216.90  
220.02  
223.17  
50  
51  
52  
53  
54  
84.03  
85.69  
87.38  
89.08  
90.81  
65  
66  
67  
68  
69  
111.23  
113.22  
115.24  
117.28  
119.34  
80  
81  
82  
83  
84  
143.63  
145.99  
148.37  
150.78  
153.22  
95  
96  
97  
98  
99  
181.80  
184,56  
187.36  
190.18  
193.03  
110  
111  
112  
113  
114  
226.35  
229.56  
232.80  
236.08  
239.38  
55  
56  
57  
58  
59  
92.56  
94.32  
96.11  
97.93  
99.76  
70  
71  
72  
73  
74  
121.43  
123.54  
125.67  
127.83  
130.01  
85  
86  
87  
88  
89  
155.68  
158.17  
160.69  
163.23  
165.80  
100  
101  
102  
103  
104  
195.91  
198.82  
201.76  
204.72  
207.72  
115  
116  
117  
118  
119  
242.72  
246.10  
249.50  
252.94  
256.41  
Unitary Products Group  
9
035-13606-003 Rev. A (202)  
3. Measure and record the suction pressure at the suction  
service valve port.  
6. Is air filter installed and clean?  
7. Is the blower motor speed set correctly?  
4. Using Table 4, note the superheat value corresponding  
to the intersection of the indoor wet bulb and the outdoor  
dry bulb.  
IMPORTANT - Installer should place unit data sheet and  
installation instructions in customer packet and give to home  
owner after installation is complete.  
5. With the superheat value obtained in step 4 and the suc-  
tion 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.  
SYSTEM OPERATION CHECKOUT  
1. With thermostat set to the OFF position, close discon-  
nect switch or switches to complete circuits to condens-  
ing unit and furnace. Set thermostat to call for cooling.  
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.  
2. After the system starts, check the voltage and amperage  
at the condensing unit contactor.  
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.  
CHECKOUT PROCEDURE  
Use the following list to see that nothing was over looked:  
1. Have all braze joints on refrigerant lines been leak  
checked? (Sweat Fit Units)  
4. With the system in operation, check the condensing unit  
for unusual noise and undue vibration.  
2. Line set fittings leak checked? (Quick Connect Units)  
3. Have base valves been opened? (Sweat Fit Units only)  
5. Allow the system to operate until it is balanced or stabi-  
lized (approximately 30 minutes), before making further  
checks.  
4. Have all refrigerant lines been secured and isolated  
properly?  
6. Remove manifold gages hoses, and install cap on  
Schrader valves.  
5. Is the indoor coil drain hooked up and draining freely?  
Pour water in drain pan.  
10  
Unitary Products Group  
035-13606-003 Rev. A (202)  
SERVICE RECORDS  
Unitary Products Group  
11  
Subject to change without notice. Printed in U.S.A.  
035-13606-003 Rev. A (202)  
Copyright © by York International Corp. 2002. All rights reserved.  
Supersedes: 035-13606-002, 550.46-N1Y (199)  
Unitary  
Products  
Group  
5005  
York  
Drive  
Norman  
OK  
73069  

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