SiBE37-701_B
Field Setting
Test Operation
222
3.2.4 Cool / Heat Mode Switching
Set Cool/Heat Separately for Each BS Unit by Cool/Heat Selector.
Set remote controller change over switch (SS1, SS2) as following:
•
When using COOL/HEAT selector, turn this switch to the BS side.
When using cool/heat selector, connect to the terminal A, B and C on the EC of the electric
parts box.
EXAMPLE OF TRANSMISSION LINE CONNECTION
•
Example of connecting transmission wiring.
Connect the transmission wirings as shown in the Fig. 1.
This setting must be completed
before turning power supply ON.
NOTE:
SS1
SS2
1
2
1
2
In case of the indoor unit connect as the cool-only unit, it wire
he terminal
of the last BS unit.
Final BS unit
To the indoor unit where
the selection of heating
and cooling is available.
1st unit
Final unit
Cooling only
F1
F2
OUT/D.BS
F1
F2
F1
F2
IN/D
OUT/D.BS
F1 F2
F1 F2
Outside unit
Branch wiring
Use 2-core wires.
(There is no polarity.)
Cool/heat selector remote
control wiring
Use 3-core wires.
(Keep in mind the polarity.)
TO IN/D UNIT TO OUT/D UNIT
F1 F2 F1 F2
F1
F2
F1
F2
IN/D
OUT/D.BS
BS unit A
RE
MO
TE
CO
NTR
O
LL
E
R
A
B
C
F1 F2
F1 F2
COOL/HEAT
selector
F1
F2
F1
F2
IN/D
OUT/D.BS
BS unit B
RE
MO
TE
CO
NTR
O
LL
E
R
A
B
C
F1 F2
COOL/HEAT
selector
Fig. 1
F1
F2
F1
F2
IN/D
OUT/D.BS
Final BS unit
RE
MO
TE
CO
NTR
O
LL
E
R
A
B
C
F1 F2
COOL/HEAT
selector
F1 F2
F1 F2
Indoor unit for cooling
Summary of Contents for REYQ8-48PY1B
Page 1: ...Service Manual REYQ8 48PY1B R 410A Heat Recovery 50Hz SiBE37 701_B ...
Page 456: ...Piping Installation Point SiBE37 701_B 445 Appendix ...
Page 460: ...Example of connection SiBE37 701_B 449 Appendix ...
Page 476: ...Revision History Date News No Contents 2010 9 10 M 10011 Correction of service manual ...