MTA HAST 070 N, Maintenance And Operating Manual, Page: 4 / 118

MAINTENANCE AND OPERATING MANUAL
Contents
HAS T 070÷140
3
ENGLISH
EN
The data in this manual are not binding and they can be modified by the manufacturer without notice.
Reproduction of this manual is strictly prohibited.
C
O N T E N T S
Q
UICK GUIDE
......................................................................................................................................1
0.1 Power up and power down ............................................................................... 1
0.2 Keys.................................................................................................................. 1
0.3 Changing the setpoint....................................................................................... 2
0.4 Alarms .............................................................................................................. 2
C
ONTENTS
...........................................................................................................................................3
G
ENERAL INFORMATION
....................................................................................................................5
1.1 How to interpret the model............................................................................... 5
1.2 How to interpret the codes ............................................................................... 5
1.3 Data plate.......................................................................................................... 6
1.4 Declaration of conformity ................................................................................ 6
1.5 Performance data.............................................................................................. 7
1.6 Noise ................................................................................................................ 7
1.7 How to interpret the alphanumeric string......................................................... 7
T
ECHNICAL PARAMETERS FOR HEAT PUMP SPACE HEATERS AND HEAT PUMP
COMBINATION HEATERS
.....................................................................................................................7
S
AFETY
..............................................................................................................................................32
2.1 General ........................................................................................................... 32
2.2 General precautions........................................................................................ 33
2.2.1 Precautions during lifting and transport ........................................................33
2.2.2 Precautions to be adopted during operation ..................................................33
2.2.3 Disposal ..........................................................................................................33
2.2.4 Precautions for maintenance and repair ........................................................33
2.3 Refrigerants .................................................................................................... 34
D
ESCRIPTION
....................................................................................................................................35
3.1 Operating principle......................................................................................... 35
3.2 Components.................................................................................................... 35
3.2.1 Compressors ...................................................................................................35
3.2.2 Condensers ......................................................................................................35
3.2.3 Fans ................................................................................................................36
3.2.4 Evaporator ......................................................................................................36
3.2.5 Heat recovery and desuperheater ...................................................................36
3.2.6 Liquid receiver ...............................................................................................37
3.2.7 Cycle reversal valve ........................................................................................37
3.3 Hydraulic system (optional) ........................................................................... 38
3.4 Cabinet ........................................................................................................... 39
3.5 Protection rating ............................................................................................. 39
3.6 Electrical circuit ............................................................................................. 39
3.7 Overall dimensions......................................................................................... 39
I
NSTALLATION
..................................................................................................................................40
4.1 Foreword ........................................................................................................ 40
4.2 Symbols.......................................................................................................... 40
4.3 Installation...................................................................................................... 40
4.3.1 Inspection ........................................................................................................40
4.3.2 Location ..........................................................................................................40
4.3.3 Hydraulic connections ....................................................................................41
4.3.4 Freeze protection ............................................................................................44
4.3.5 Electrical connections .....................................................................................45
4.3.6 Phase Monitor .................................................................................................45
S
TART
-
UP
..........................................................................................................................................46
E
LECTRONIC CONTROLLER
.............................................................................................................47
6.1 Technical features .......................................................................................... 47
6.1.1 Controller connectivity ...................................................................................47
6.1.2 Display ............................................................................................................48
6.1.3 Auxiliary hardware .........................................................................................49