Lennox HS29-012, Unit Information

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Page 13
V − MAINTENANCE
At the beginning of each heating or cooling season, the sys-
tem should be cleaned as follows:
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect switch(es). Unit may have multiple
power supplies.
A − Outdoor Unit
1 − Clean and inspect condenser coil. (Coil may be
flushed with a water hose).
2 − Visually inspect all connecting lines, joints and coils
for evidence of oil leaks.
B − Indoor Coil
1 − Clean coil if necessary.
2 − Check connecting lines and coil for evidence of oil
leaks.
3 − Check condensate line and clean if necessary.
C − Indoor Unit
1 − Clean or change filters.
2 − Bearings are pre-lubricated and need no further oil-
ing.
3 − Check all wiring for loose connections.
4 − Check for correct voltage at unit.
5 − Check amp−draw on blower motor.
Unit nameplate_________Actual_________.
TABLE 5
SUBCOOLING FOR RFC SYSTEMS
OUTDOOR
TEMP
LIQUID SUBCOOLING [+ 1 F (.6 C)]
TEMP.
F ( C)
−141 −211 −261 −311 −411 −461 −511
60
(16)
14
(7.8)
17
(9.5)
18
(10)
18
(10)
14
(7.8)
16
(8.9)
15
(8.3)
65
(18)
13
(7.2)
16
(8.9)
16
(8.9)
17
(9.5)
13
(7.2)
15
(8.3)
14
(7.8)
70
(21)
12
(6.7)
15
(8.3)
14
(7.8)
16
(809)
12
(6.7)
14
(7.8)
13
(7.2)
75
(24)
10
(5.6)
14
(7.8)
12
(6.7)
15
(8.3)
10
(5.6)
13
(7.2)
11
(6.1)
80
(27)
9
(5)
13
(7.2)
11
(6.1)
14
(7.8)
9
(5)
12
(6.7)
10
(5.6)
85
(29)
8
(4.5)
12
(6.7)
10
(5.6)
13
(7.2)
8
(4.5)
11
(6.1)
8
(4.5)
90
(32)
7
(3.9)
11
(6.1)
9
(5)
12
(6.7)
7
(3.9)
10
(5.6)
7
(3.9)
95
(35)
6
(3.3)
9
(5)
8
(4.5)
11
(6.1)
6
(3.3)
9
(5)
7
(3.9)
100
(38)
4
(2.2)
8
(4.5)
7
(3.9)
10
(5.6)
5
(2.8)
8
(4.5)
6
(3.3)
105
(41)
2
(1.1)
7
(3.9)
6
(3.3)
9
(5)
4
(2.2)
6
(3.3)
4
(2.2)
110
(43)
2
(1.1)
6
(3.3)
6
(3.3)
7
(3.9)
3
(1.7)
5
(2.8)
3
(1.7)
115
(45)
1
(0.6)
5
(2.8)
5
(2.8)
5
(2.8)
2
(1.1)
3
(1.7)
2
(1.1)
TABLE 6
NORMAL OPERATING PRESSURES*
OUTDOOR
HS29−141 HS29−211 HS29−261 HS29−311 HS29−411 HS29−461 HS29−511 HS29−651
OUTDOOR
ENTERING AIR
TEMPERATURE
F ( C)
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
LIQ.
+1 0
PSIG
SUC.
+1 0
PSIG
65 (18.3) (RFCIV) − − 155 65 160 65 168 63 176 62 174 64 181 65 − −
75 (24) (RFCIV) − − 181 70 188 70 197 68 203 66 205 69 208 70 − −
85 (29.4) (RFCIV) − − 208 75 216 74 227 73 233 70 236 73 239 75 − −
95 (35) (RFCIV) − − 238 80 247 78 258 77 266 74 271 77 271 79 − −
105 (40.6)
(RFCIV)
− − 270 84 280 82 292 80 299 77 305 80 306 82 − −
65 (18.3) (TXV) 150 70 159 73 164 71 173 71 179 68 180 71 187 73 150 70
75 (24) (TXV) 179 71 183 75 189 73 199 73 205 70 208 73 212 75 179 71
85 (29.4) (TXV) 211 73 209 77 217 75 228 75 235 72 238 75 241 77 211 73
95 (31.2) (TXV) 269 76 238 80 247 78 258 77 266 74 271 77 271 79 269 76
105 (40.6) (TXV) 286 75 269 82 279 80 292 79 299 77 305 79 305 80 286 75
* These are typical pressures only. Indoor evaporator match up, indoor air quantity and evaporator load will cause the pressures to vary.