Specifications subject to change without notice.
Fig. 1 — 24V Interface
Read and become familiar with these instructions before beginning
the installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS.....................................................................1
INTRODUCTION .........................................................................................2
ACCESSORIES.............................................................................................2
DIMENSIONS...............................................................................................3
CLEARANCES .............................................................................................3
INSTALLATION ..........................................................................................4
SYSTEM CONFIGURATION SCENARIOS...............................................4
SCENARIO 1: SINGLE ZONE OUTDOOR UNITS (38MPRA, 38MA*R,
38MHR) WITH APPROVED DUCTLESS INDOOR UNITS .....................5
SCENARIO 2: SINGLE ZONE OUTDOOR UNITS (38MBR) WITH
APPROVED DUCTLESS INDOOR UNITS................................................6
SCENARIO 3: MULTI-ZONE OUTDOOR UNITS (38MGR) WITH
APPROVED DUCTLESS INDOOR UNITS................................................7
SCENARIO 4: SINGLE ZONE OUTDOOR UNIT 38MA*R WITH
APPROVED MULTI-FAMILY 24V FAN COILS FMA/FMC/FMU..........8
SCENARIO 5: SINGLE ZONE OUTDOOR UNIT 38MA*R WITH
APPROVED RESIDENTIAL 24V FAN COILS FV4..................................9
WIRING.........................................................................................................11
DIP SWITCHES CONFIGURATION ..........................................................12
ERROR CODES ............................................................................................13
WIRING DIAGRAM ....................................................................................14
APPENDIX 1 - COMPATIBILITY AND FAN SPEED WIRING ..............15
APPENDIX 2 - PIPING ADAPTER BUSHINGS/REDUCERS ..................16
APPENDIX 3 - FV4C TRANSFORMER .....................................................16
APPENDIX 4 - ADDITIONAL REFRIGERANT CHARGE FOR
CONVENTIONAL FAN COILS ..................................................................16
APPENDIX 5 - FV4C AIRFLOW DELIVERY ...........................................16
SAFETY CONSIDERATIONS
Read these instructions thoroughly and follow all warnings or
cautions included in the literature and attached to the unit. Consult the
local building codes and National Electrical Code (NEC) for special
requirements. Recognize safety information.
This is the safety-alert symbol
. When you see this symbol on the unit
and in instructions or manuals, be alert to the potential for personal injury.
Understand these signal words:
DANGER
,
WARNING
, and
CAUTION
.
These words are used with the safety-alert symbol.
DANGER
identifies the most serious hazards which may result in
severe personal injury or death.
WARNING
signifies hazards which
could also result in personal injury or death.
CAUTION
is used to
identify unsafe practices which may result in minor personal injury or
product and property damage.
NOTE
is used to highlight suggestions
which result in enhanced installation, reliability, or operation.
NOTES:
Images are for illustration purposes only. Actual models
may differ slightly.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before beginning any modification or installation of this kit, ensure the
main electrical disconnect is in the
OFF
position.
Ensure the power is not connected to the fan coil unit. On some systems, both the
fan coil and the outdoor unit may be on the same disconnect. Tag the disconnect
switch with a suitable warning label. There may be more than one disconnect.
WARNING
EQUIPMENT DAMAGE HAZARD
Failure to follow this warning may result in equipment damage.
DO NOT
install the wired controller in an area subjected to excessive steam, oil or
sulfide gas. Doing so may cause the controller to deform and/or fail.
CAUTION
INSTALLATION
Entrust a licensed contractor to install the unit. Installation by unskilled
persons may lead to improper installation, electric shock, or fire.
Reinstallation must be performed by authorized professionals. Non-
compliance may lead to electric shock or fire.
CAUTION
KSAIC0301230 24V Interface Kit
for Ductless Systems and Hybrid Solutions
Installation Instructions
