Mitsubishi Electric PUHY-(E)P300, Service Handbook

Page: 155 / 302

[
VIII
Test Run Mode ]
- 146 -
HWE07010 GB
(2) Heating operation
Operation
Outdoor unit model
PUHY-P950YSHM-A
PUHY-P250YHM-A PUHY-P300YHM-A PUHY-P400YHM-A
Operating
conditions
Ambient
tempera-
ture
Indoor
DB/WB
20°C/ - [68°F/ - ]
Outdoor
7°C/6°C [45°F/43°F]
Indoor
unit
No. of connected
units
Unit
8
No. of units in opera-
tion 8
Model - 250/200/200/125/100/32/32/25
Piping
Main pipe
m [ft]
5 [16-3/8 ]
Branch pipe 10 [32-3/4 ]
Total pipe length 85 [278-13/16]
Fan speed - Hi
Amount of refrigerant
kg
[lbs-oz] 42 [ 93 ]
Outdoor
unit
Electric current A 48.1
Voltage V 400
Compressor frequency Hz 72 90 90
LEV open-
ing
Indoor unit
Pulse
400/332/332/406/332/254/254/229
SC (LEV1) 0
LEV2 1400 1400 1400
Pressure
High pressure (after O/S)/low
pressure (before accumulator)
MPa
[psi]
2.95/0.62 2.90/0.62 2.91/0.60
[428/90] [421/90] [422/87]
Temp. of
each sec-
tion
Outdoor
unit
Discharge (TH4)
°C [°F]
81 [ 178 ] 82 [ 180 ] 89 [ 192 ]
Heat exchanger out-
let (TH3) -3 [ 26 ] -3 [ 26 ] -4 [ 25 ]
Accumulator inlet -3 [ 26 ] -3 [ 26 ] -4 [ 25 ]
Accumulator outlet -3 [ 26 ] -3 [ 26 ] -4 [ 25 ]
Compressor inlet -3 [ 26 ] -3 [ 26 ] -4 [ 25 ]
Compressor shell
bottom 30 [ 86 ] 30 [ 85 ] 40 [ 104 ]
Indoor
unit
LEV inlet 39 [ 102 ]
Heat exchanger
outlet 80 [ 176 ]