Indoor Installation Manual

Table of Contents
SVZ-KP12,18, 24, 30, 36NA ................................................................................................................ 5
1. Dimensions ............................................................................................................................ 5
2. Inspect shipment ..................................................................................................................... 6
3. Safety precautions .................................................................................................................. 7
3.1. Before installation and electric work ............................................................................... 7
3.1.1. Symbols used in the text .................................................................................... 7
3.2. Precautions for devices that use R410A refrigerant ....................................................... 10
3.3. Before getting started .................................................................................................. 11
3.4. Before getting installed (moved)-electrical work ............................................................. 12
3.5. Before starting the test run ........................................................................................... 13
4. Indoor unit accessories ........................................................................................................... 14
5. Selecting an installation site .................................................................................................... 15
6. Combining indoor units with outdoor units ................................................................................ 16
7. Installing the unit .................................................................................................................... 17
8. Side Return ........................................................................................................................... 18
9. Duct connection ..................................................................................................................... 19
10. Mount positions .................................................................................................................... 20
10.1. Vertical installations ................................................................................................... 20
10.2. Horizontal right installations ....................................................................................... 20
10.3. Horizontal left installations .......................................................................................... 22
10.3.1. Horizontal Mounting ........................................................................................ 32
11. Air filter ................................................................................................................................ 33
12. Refrigerant piping work ......................................................................................................... 34
12.1. Insulation .................................................................................................................. 37
12.2. Piping size ................................................................................................................ 37
13. Drain connections ................................................................................................................ 38
14. Electrical wiring .................................................................................................................... 41
14.1. Remote controllers .................................................................................................... 42
14.2. Connecting line voltage .............................................................................................. 44
14.2.1. Electrical Characteristics, Function Table ......................................................... 45
14.3. Condensate overflow safety switch connection (CN4F) ................................................ 47
14.4. Changing blower external static pressure .................................................................... 48
14.5. ERV (Energy Recovery Ventilation) ............................................................................ 49
14.6. Humidifier ................................................................................................................. 51
14.6.1. Humidistat: ..................................................................................................... 52
15. Test run ............................................................................................................................... 53
15.1. Before test run .......................................................................................................... 53
15.2. Test run .................................................................................................................... 53
15.3. Self-check ................................................................................................................. 54
15.3.1. [Output pattern A] Errors detected by indoor unit .............................................. 54
15.3.2. [Output pattern B] Errors detected by unit other than indoor unit (outdoor unit,
etc.) .......................................................................................................................... 54
15.4. AUTO RESTART FUNCTION ..................................................................................... 56
15.4.1. Indoor controller board .................................................................................... 56
SVZ-KP12,18, 24, 30, 36NA ............................................................................................................... 57
1. Dimensions ........................................................................................................................... 57
2. Inspection du matériel livré ..................................................................................................... 58
3. Mesures de sécurité ............................................................................................................... 59
3.1. Avant l’installation et les travaux électriques .................................................................. 59
SVZ-KP12,18, 24, 30, 36NA
Specifications are subject to change without notice. 3 © 2022 Mitsubishi Electric US, Inc.