Page 14
73
PSIG
285
84
10HP NORMAL OPERATING PRESSURES (COOLING MODE)
OUTDOOR COIL
ENTERING AIR
TEMPERATURE
10HP12
10HP24
10HP30
10HP36
65
°
F (TXV)
75
°
F (TXV)
85
°
F (TXV)
95
°
F (TXV)
LIQ.
+ 10
SUC.
+ 10
PSIG PSIG
LIQ.
+ 10
SUC.
+ 10
PSIG PSIG
LIQ.
+ 10
SUC.
+ 10
PSIG PSIG
105
°
F (TXV)
LIQ.
+ 10
SUC.
+ 10
PSIG
PSIG
LIQ.
+ 10
SUC.
+ 10
PSIG PSIG
10HP18
10HP42
10HP48
10HP60
LIQ.
+ 10
SUC.
+ 10
PSIG
PSIG
LIQ.
+ 10
PSIG
SUC.
+ 10
SUC.
+ 10
PSIG
LIQ.
+ 10
PSIG
105
°
F (RFC III)
95
°
F (RFC III)
85
°
F (RFC III)
75
°
F (RFC III)
65
°
F (RFC III)
TABLE 11
137
155
182
210
240
130
175
155
210
240
78
79
80
82
83
59
75
67
82
87
145
165
195
225
255
150
195
170
230
260
72
73
74
77
79
61
75
68
81
85
160
185
215
245
275
150
205
175
240
280
74
76
78
80
84
60
73
67
78
81
170
195
225
255
290
165
220
190
255
75
77
78
80
82
62
74
69
80
175
200
227
260
295
170
230
205
265
305
75
76
77
79
81
61
73
68
79
82
160
185
215
245
280
155
210
180
240
275
72
74
76
78
80
61
68
63
73
76
165
185
210
240
275
155
210
185
245
275
72
73
76
78
80
63
69
64
74
78
150
175
200
235
265
75
76
78
80
*
*
*
*
*
*
*
*
*
*
*
For an approved match-up the 10HP60 must be used with a TXV.
10HP36 (CAN)
LIQ.
+ 10
SUC.
+ 10
PSIG
PSIG
175
200
230
260
295
160
225
190
255
385
76
77
78
79
81
62
70
68
77
81
2 – RFCIII Systems
The system should not be charged at ambients below
60
_
F (15
_
C). If charging below 60
_
F (15
_
C) is required,
the recommended method of charging is to weigh the
refrigerant into the unit according to the total amount
shown on the unit nameplate and in table 8. For line sets
varying from 20 feet, refer to table 7 for refrigerant charge
adjustment. If ambient temperature is above 60
_
F (15
_
C)
use the subcoooling method outlined below.
SUBCOOLING METHOD (RFCIII SYSTEMS)
(Ambient Temperature Above 60
_
F [16
_
C] )
1 – Connect gauge manifold. Connect an upright
R–22 drum to center port of gauge manifold.
2 – Operate indoor and outdoor units in cooling
mode. Allow outdoor unit to run until system
pressures stabilize.
3 – Make sure thermometer well is filled with
mineral oil before checking liquid line
temperature.
4 – Read liquid line pressure and convert to
condensing temperature using temperature/
pressure conversion chart.
Condensing temperature (read from gauges)
should be a few degrees warmer than the
liquid line temperature.
Outdoor
Unit
Indoor
Unit
65
_
F 75
_
F 85
_
F 95
_
F 105
_
F 115
_
F
CB19–51
10HP48
10HP12
10HP18
10HP24
10HP36 (CAN)
CB/CBH19–41
CB/CBH19–26
CB/CBH19–21
CB/CBH19–21
CB/CBH19–31
CB/CBH19–41
10HP30
10HP42
SUBCOOLING METHOD––RFCIII Systems*
5
13
12
12
11
11
5
13
12
12
10
10
4
13
11
10
7
8
1
12
9
8
6
7
0
6
7
6
4
5
0
4
5
4
2
2
*Approved matchups only
10HP36
CB/CBH19–41
17
15
14
11
8
5
18
16
15
12
9
6
Condensing Temp
°
F Warmer
Than Liquid Line At Various
Ambients
5 – Place thermometer in well and read liquid line
temperature. Table 12 shows how much
warmer the condensing temperature should be.
Add refrigerant to make the liquid line
temperature cooler.
Recover refrigerant to make the liquid line
temperature warmer.
6 – When unit is properly charged liquid line
pressures should approximate table 11.
E – Oil Charge
Refer to table 4 on page 6 for factory oil charge.
V – MAINTENANCE
At the beginning of each heating or cooling season, the
system should be cleaned as follows:
A – Outdoor Unit
1 – Clean and inspect outdoor coil. (Coil may be
flushed with a water hose).
2 – Outdoor fan motor is prelubricated and sealed.
No further lubrication is required.
3 – Visually inspect all connecting lines, joints
and coils for evidence of oil leaks.
NOTE-If insufficient heating or cooling occurs, unit
should be gauged and refrigerant charge checked.
B – Indoor Coil
1 – Clean coil if necessary.
2 – Check connecting lines, joints and coil for
evidence of oil leaks.
3 – Check condensate line and clean if necessary.
C – Indoor Unit
1 – Clean or change filters.
2 – Check blower motor for debris. Blower motors
are prelubricated and sealed. No further
lubrication required.
3
–
Adjust blower speed for cooling. Static
pressure drop over the coil should be checked
to determine the correct blower CFM. Refer to
Lennox Engineering Handbook for Static
Pressure and CFM tables.
4 – Check all wiring for loose connections.
5 – Check for correct voltage at unit.
6 – Check amp–draw on blower motor.
Unit nameplate_________Actual_________.
Содержание Diplomat 10HP12
Страница 16: ...Page 16 10HP WITH ELECTROMECHANICAL THERMOSTAT...
