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2
PUMY-P48NHMU
1
PUMY-P48NHMU
2
PUMY-P48NHMU
1
-BS PUMY-P48NHMU
2
-BS
· Compressor (MC) and oil have been changed.
ANB33FDCMT (Ester oil: MEL56)
ANB33FDHMT(Ether oil: FV50S)
· Electrical parts have been changed.
Multi controller board (MULTI.
C.B.)
Noise filter circuit board (N.F.)
Active filter module (ACTM)
Relay (52C) , Resister (RS) (including N.F.)
PUMY-P48NHMU
PUMY-P48NHMU
1
PUMY-P48NHMU-BS PUMY-P48NHMU
1
-BS
• Primary heating ON/OFF control has been added.
1
TECHNICAL CHANGES
(1) Primary heating operation controls another heat source that depends on the main system's operations,
which means the interlock operation shown in "c)" will be possible.
a)
b)
Note: Following Indoor models DO NOT HAVE this feature available:
PMFY-P06NBMU
PMFY-P12NBMU
PKFY-P06NAMU
PMFY-P08NBMU
PMFY-P15NBMU
PKFY-P08NAMU
c) Different Indoor unit applications that can be applied:
(2) Outdoor unit DIPSW4-4 for Primary Heating Control:
Set DIPSW4-4 when power is turned off at unit.
OFF:
Disable Primary Heating Function (Initial setting)
ON :
Enable Primary Heating Function
(3) Determine required Indoor Fans Speed during defrost mode:
0
20k
27k
39k
62K
None
Black
Blue
White
Red
Stopped
Setting on
remote
controller
Very Low
Low
High
Note: The setting will be disabled "when Heater contact signal is OFF".
Service ref. PUMY-P48NHMU(-BS) does not have this function.
Indoor unit must be R410A UL model for this function to operate.
CN22 input resistance (
)
CN22 input (cable color)
FAN SPEED SETTING
OFF
Fan airflow rate setting
During defrost operation
ON
Wiring
CN22
1-1. PRIMARY HEATING ON/OFF CONTROL SET-UP
a) With no Primary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles.
b) With Primary heating control the auxiliary heat will be on during defrost mode, thus cold drafts will not be present.
(Ducted units only)
c) For models PEFY and PDFY (Ducted) recommended to use "Black" (20K) connector.
d) For models PLFY, PCFY, PKFY and PFFY (Ductless) recommended "None", no connector required.
e) To set the fan airflow rate to be used during defrost operation, insert the resistance that is packed within the
optional adaptor cable kit (PAC-YU24HT-F) into the CN22 sensor input.
You can choose at what speed the indoor fan operates during defrost cycles bases on chart below.