York H5CE090 User Manual
EXTENDING THE SERVICE PORTS
(Refer to Fig 7.)
1. Loosen the screws securing the service ports in shipping
position.
2. Push the service ports through the corner post.
3. Tighten the screws to secure the service ports for installa-
tion.
INSTALLATION
Since the condensing units are shipped with a holding charge
of refrigerant-22, they can be checked for a refrigerant leak by
depressing the stem on either of the service ports that extend
through the cabinet. As soon as some internal pressure is re-
lieved release the stem. DO NOT release the entire holding
charge.
If the unit has already lost its holding charge, it should be leak
If the unit has already lost its holding charge, it should be leak
tested and the necessary repairs should be made. If the unit
has maintained its holding charge, you can assume that it has
no leaks and proceed with the installation.
CAUTION: Dry nitrogen should always be supplied through a
connection while it is being brazed or unbrazed be-
cause the temperature required to make or break a
brazed joint is sufficiently high to cause oxidation
of the copper unless an inert atmosphere is pro-
vided. The flow of nitrogen should be continued un-
til the joint has cooled.
When making a braze connection, wrap a wet rag
around all tubing inside the unit to help prevent
damage to other components.
WARNING:The dry nitrogen should always be supplied
through a pressure regulating valve.
On HCE090 models only, remove the 4-1/2" x 4-1/2" patch
plates from the piping access panel on the front of the unit to ex-
pose the refrigerant connections.
Before installing the liquid line between the condensing unit
Before installing the liquid line between the condensing unit
and the evaporator coil, prepare as follows:
1. Burnish the external surfaces of the liquid connection on
the condensing unit and the end of the field-supplied piping
for the liquid line.
NOTE: Clean surfaces are essential for a well-brazed con-
nection.
2. Carefully clean the internal surfaces of the above. Any par-
ticles left on these surfaces may lead to a future system
malfunction.
NOTE: Use only copper tubing that has been especially
cleaned and dehydrated for refrigerant use. If the
tubing has been open for an extended period of
time, it should be cleaned before being used.
The liquid line connections can now be brazed while maintain-
ing a minimum flow of dry nitrogen through the piping as fol-
lows:
1. Remove the cap from the 1/4" access port on the liquid line
service valve.
2. Connect a supply of dry nitrogen to this access port.
NOTE: The filter-drier should be installed in the liquid line as
close to the evaporator coil as possible.
Do not allow the filter-drier to be exposed to the atmos-
Do not allow the filter-drier to be exposed to the atmos-
phere for an extended period of time. Once it absorbs
moisture from the atmosphere, it loses its
effectiveness.
3. The matched air handlers are shipped with a small R-22
charge and they should be checked for leaks before instal-
lation. Drill a small hole through the sealing cap or disc in
both the liquid and suction connection. If there is a pres-
sure release, the evaporator has no leaks and you can pro-
ceed with installation. If the charge has been lost, the coils
should be leak tested and the necessary repairs made.
4. Move the dry nitrogen supply from the access port on the
liquid line service valve of the condensing unit to the hole
through the suction disc on the evaporator coil.
5. Unbraze the coil's liquid line disc while maintaining a flow of
dry nitrogen across the connection and through the hole in
the liquid line disc.
NOTE: If the liquid line has a solenoid valve, the valve
should be opened manually to permit the nitrogen
to flow freely.
6. After the disc has been removed, burnish the external sur-
faces and clean the internal surfaces as outlined above.
7. Move the dry nitrogen supply back to the access port on the
liquid line service valve.
8. Braze the liquid line to the liquid connection on the evapo-
rator coil while maintaining a minimum flow of dry nitrogen
through the liquid line, the evaporator coil and the hole in
the suction disc.
9. Unbraze the disc on the suction connection of the evapora-
tor coil while maintaining the flow of dry nitrogen.
035-15407-002-B-0404
Unitary Products Group
9
Model
HCE
Suction Press. & Corresponding
Temp. @ Saturation
Temperature of Air on Condenser Coil, °F
65
75
85
95
105
115
PSIG
°F
MBH
KW*
MBH
KW*
MBH
KW*
MBH
KW*
MBH
KW*
MBH
KW*
090
61.6
35
90
6.1
88
6.7
81
7.2
77
7.9
74
8.6
68
9.5
68.5
40
101
6.3
96
6.8
91
7.4
87
8.1
82
8.9
77
9.7
76.0
45
110
6.5
109
7.0
101
7.6
95
8.4
90
9.1
85
10.0
84.0
50
120
6.6
115
7.2
109
7.8
104
8.6
99
9.4
93
10.3
120
61.6
35
123
7.7
117
8.4
112
9.1
106
9.9
100
10.8
95
11.8
68.5
40
134
8.0
128
8.6
122
9.3
116
10.1
110
11.0
104
12.1
76.0
45
145
8.2
139
8.8
132
9.5
126
10.4
120
11.3
113
12.3
84.0
50
156
8.4
150
9.1
143
9.8
136
10.6
129
11.5
123
12.5
150
61.6
35
140
9.4
133
10.4
127
11.3
119
12.6
112
13.8
105
15.1
68.5
40
151
9.6
144
10.6
137
11.5
129
12.8
122
14.1
114
15.4
76.0
45
165
9.9
156
10.9
148
11.8
140
13.1
132
14.4
124
15.8
84.0
50
178
10.2
169
11.2
159
12.1
151
13.4
142
14.8
134
16.1
* Includes compressor and condenser fan motor(s).
TABLE 7 - COOLING CAPACITIES AND POWER REQUIREMENTS