Toshiba MMY-MAP0726FT2P-UL User Manual

<Other points to note>
1 Cooling operation under low outside temperature conditions
1) If pressure falls to extremely low levels, indoor units may be shut down via freeze prevention control based
on the indoor TC sensor.
2) If pressure falls to extremely low levels, frequency may be reduced via cooling capacity control.
3) When the discharge
temperature sensor reading falls below 140°F (60°C), the frequency may be increased
above the level called for by the command received from the indoor unit.
2 PMV (Pulse Motor Valve)
1) When the power is turned on, PMVs generate a tapping sound as they are initialized. If this sound is not
heard, there is a possibility of faulty PMV operation. However, in a noisy environment, it may simply be
drowned out by ambient noise.
2)
Do not separate the actuator (head section) from any PMV during operation. It may result in an inaccurate
opening.
3) When transporting (relocating) the set, do not, under any circumstances, keep the actuator separated. It
may damage the valve by causing it to close and exposing it to pressure from sealed liquid.
4) When reattaching the actuator after its removal, push it in firmly until a click sound is heard. Then, turn the
power off and back on again.
<Schematic diagram for oil equation control>
− 64 −
Discharge gas pipe
Suction gas pipe
Liquid pipe
Balance pipe
Header unit (MMY-MAP0726FT*-UL)
Header unit (MMY-MAP0726FT*-UL)
Unit
transferring oil
Unit
receiving oil
SV
FM
Propeller
Fan
(Right side)
Main heat exchanger
Fusible plug
FPFP
Liquid tank
(SV14)
Check joint
(Liquid)
PMV4
GEARED PMV3
SV
SV1
5
(TO)
(TE2)
(TE1)
(TL1)
(SV5)
SV
(SV6)
Check joint
(high pressue)
High pressue sensor
4-way
Valve
(TS1)
(TS2)
Check joint
(low pressue)
Low pressue sensor
Accumlator
SV
Oil separator
Centrifugal
(SV3D)
type
(SV2)
(SV41)
SV
(SV42)
(SV3C)
(TD1)
(TD2)
(TK4)
High
pressure
SW
High
pressure
SW
Comp 1
(INV)
(TK1)
(TK2)
(SV3A)
(SV3E)
(TK5)
Oil
header
SV
B.P.
(SV3B)
00
SV
SV
Sub-heat exchanger (Right side)
(SV10)
SV
SV
C
C
o
om
mp
p
2
2
(I(INNV)V)
(Left side)
Main heat exchanger
SV
GEARED PMV1
SV
SV
SV
SV
Fusible plug
FP
SV
FM
Propeller
Fan
(Right side)
Main heat exchanger
Fusible plug
FPFP
Liquid tank
(SV14)
Check joint
(Liquid)
PMV4
GEARED PMV3
SV
SV1
5
(TO)
(TE2)
(TE1)
(TL1)
(SV5)
SV
(SV6)
Check joint
(high pressue)
High pressue sensor
4-way
Valve
(TS1)
(TS2)
Check joint
(low pressue)
Low pressue sensor
Accumlator
SV
Oil separator
Centrifugal
(SV3D)
type
(SV2)
(SV41)
SV
(SV42)
(SV3C)
(TD1)
(TD2)
(TK4)
High
pressure
SW
High
pressure
SW
Comp 1
(INV)
(TK1)
(TK2)
(SV3A)
(SV3E)
(TK5)
Oil
header
SV
B.P.
(SV3B)
00
SV
SV
Sub-heat exchanger (Right side)
(SV10)
SV
SV
C
C
o
o
m
m
p
p
2
2
(I(INNV)V)
(Left side)
Main heat exchanger
SV
GEARED PMV1
SV
SV
SV
SV
Fusible plug
FP
on
on
Sub-heat exchanger (Left side1)
Sub-heat exchanger (Left side1)

Toshiba MMY-MAP0726FT2P-UL Specifications

General

Brand	Toshiba
Model	MMY-MAP0726FT2P-UL
Category	Air Conditioner
Language	English