Toshiba SMMSu User manual

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Air Condioning Design & Distribuon
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TOSHIBA
SMMSu Two Pipe - Heat Pump
VRF System
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
In 2021 Toshiba air condioning, introduced a new award winning, 2-pipe Heat Pump
VRF system, the SMMSu
The aim of this pocket guide is to assist engineers in understanding the conguraon and refrigerant charge
required to obtain opmum performance.
For engineers who are familiar with Toshiba 2-pipe heat pump VRF systems, the new SMMSu units
requires new addional conguraons seng PRIOR to running the equipment.
For installaon details, locaon, space required, wiring and pipe conguraon, please refer to the
installaon manual provided with each outdoor (CDU) unit.
Pre-commissioning.
Electrical.
1) Conrm that the power supply at each outdoor unit is correct, three phase and neutral
380 – 400 volts 50 Hz AC, (Fig1 & g2).
Fuse sizes are dependent on unit size and current electrical regulaons, (IET 18th edion).
g 1 g 2
When mulple outdoor units are “modularised” to form a system, the outdoor units (CDU) must be of
the same generaon, MMY-MUP####HT8P-E, a “system” can comprise of up to 5 CDU’s. (8hp to 120hp).
Individual power supply must be applied to each CDU.
CDU’s are electrically linked together via a two core screened cable 1.0mm to 1.5mm, connected at
terminals, U5 & U6 (Uc Link).
CDU’s are electrically linked to the indoor units (FCU), via a two core screened cable 1.0mm to 1.5mm
(up to 1,000m) connected at terminals, U1 & U2 (Uv)
Systems controlled via Central Remote Controller or BMS Interface, are electrically connected to the
“HEADER” CDU terminals U3 & U4 (Uh) via a 1.00 to 1.5mm, two core screened cable up to a maximum
length of 1,000m, over 1,000m to 2,000m a 2.5mm two core cable should be used.
-1-

CDU terminals
g 3
SMMSu Maximum of 5 Units
g 4
Refrigeraon
Prior to carrying out any pressure tesng or evacuaon, make sure that both Liquid and Sucon valves
are FULLY CLOSED.
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
g 5
-2-

Liquid and Sucon connecons are both braze type, make sure to “WET RAG” the service valves whilst
brazing, failure to do so could damage the seals within the service valves causing refrigerant loss.
g 6
1) Connect a suitable R410A refrigerant manifold to BOTH service valves, Liquid and Sucon.
2) Carry out a complete pressure test using suitable Oxygen Free Nitrogen, (OFN) in accordance
with current F-Gas regulaons and in-line with IOR Good Refrigerant Pracces.
It is recommended to apply a pressure of 3Bar, for 5 minutes or more, increase the
p r e s s u r e t o 1 5 B a r a n d h o l d f o r 5 m i n u t e s o r m o r e , t h i s w i l l d e t e c t s e r i o u s l e a k s .
I n c r e a s e t h e p r e s s u r e o v e r a p e r i o d o f  m e t o 4 1 . 5 B a r , h o l d i n g t h i s p r e s s u r e f o r a p e r i o d o f 2 4 h o u r s .
If environmental temperatures change during the tesng period, pressures could change by approx 0.1Bar (1.4PSIG) per 1oC.
3) Close o the manifold gauge valves and disconnect the OFN cylinder.
4) Replace the OFN cylinder with a suitably sized vacuum pump (6cfm or beer).
5) Evacuate the system to the best vacuum, weather condions will allow, ideally between 2 Torr
(2.7mb) to 4 Torr (5.5mb), with a duraon of 2 to 3 hours
6) Once a suitable vacuum has been achieved, remove the vacuum pump, leaving the manifold
gauge connected and let the system stand for 1 hour or more, checking the vacuum gauge if
there is no loss move on, if there is a pressure loss, idenfy the potenal cause, recfy
and repeat.
7) Replace the vacuum pump with suitable virgin R410A refrigerant cylinder/s.
8) Charge the system with the calculated quanty of virgin R410A refrigerant.
Calculaons and relevant correcon charts can be found further on in this guide.
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
-3-

Refrigerant charge for VRF equipment is crical to obtain opmum performance.
This pocket guide will take you through the step by step guidance in calculang the correct refrigerant
charge for your SMMSu system.
Working out the correct refrigerant charge requires;
1) The outdoor equipment, quanty and size, (Compensaon/Correcon/Trim Charge).
(Units have to be in the same system i.e. joined by pipe and cable with another unit,forming a modularized system)
Dierent sizes and combinaons of outdoor units, have a specic Compensaon/Correcon/Trim charge per combinaon
2) The quanty and size of indoor units installed.
(Qty and size of Standard indoor units, Air to Air Heat Exchangers, Fresh Air Units)
g 7
g 8
g 9
Correcve Amount of Refrigerant for DX Coil Interface
Capacity Code (Equivalent to HP) 8 10 16 18 20 32 36 40 48 54 60
Correcve Amount of Refrigerant (kg) 1.4 1.8 2.9 3.2 3.6 5.8 6.5 7.2 8.6 9.7 10.8
g 10
3) Correcon for Diversity
Total up the hp of all the indoor units on the system mulply by the hp of the outdoor units, result is % diversity.
Example 3 x MMK-UP0181HP-E ( 2hp high wall units) = 6hp, connected to 1 x MMY-MUP1001HT8P-E (10hp)
6 x 10 = 60% Diversity = -2.0kg
g 11
4) The lengths and sizes of the liquid line installed.
(Linear length only, i.e. straight pipes only, do not count bends or ngs.)
Pipe dia. Liquid Line inch 1/4” 3/8” 1/2” 5/8” 3/4” 7/8” 1”
Addional Refrigerant Amount per m kg/m 0.025 0.055 0.105 0.160 0.250 0.370 0.470
g 12
With the above informaon it is easy to calculate the addional refrigerant charge for each system.
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
Indoor Unit Capacity Rank 003 005 007 008 009 010 012 014 015 018 020 024 027 030 036 048 056 072 096
Capacity Code (Equivalent to HP) 0.3 0.6 0.8 0.9 11.1 1.25 1.5 1.7 22.25 2.5 33.2 4568 10
Correcve Amount of
Refrigerant (kg) 0.2 0.4 0.6 1.0
Correcve amount of refrigerant for High Eciency 4-way Blow Cassee - ONLY
Indoor Unit Capacity Rank 009 012 015 018 024 027 030 036 048 056
Capacity Code (Equivalent to HP) 11.25 1.7 22.5 33.2 45 6
Correcve Amount of Refrigerant (kg) 0.2 0.6
Correcve Amount of Refrigerant for Hot Water Module
Indoor Unit Capacity Rank 024 048
Capacity Code (Equivalent to HP) 2.5 5
Correcve Amount of Refrigerant (kg) 0.2
Correcve Amount of Refrigerant According to the Outoor Unit Diversity
Diversity D (%) Correcve Amount of Refrigerant (kg)
50% < D < 60% -2.5
60% < D < 70% -2.0
70% < D < 80% -1.5
80% < D < 90% -1.0
90% < D < 95% -0.5
98% < D 0
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This guide will breakdown the formula into easy steps using data from the supplied charts,
(gs.7,8,9,10,11,12,13)
1) The outdoor equipment, quanty and size, (Compensaon/Correcon/Trim Charge).
Individual outdoor units can be joined together via pipes and electric’s, forming a modularized
system, there is a specic correcon/trim charge for each combinaon of units, rstly idenfy the
individual units which are forming the system = g 13
Example 1. 1 x MMY-MUP2401HT8P-E + 2 x MMY-MUP 1401HT8P-E = 52HP system which has a
Compensaon/Correcon/Trim charge of 10.1kg.
Using the chart below idenfy the combinaon of units and ulise the Compensaon/Correcon/Trim
charge in the right hand column (kg).
g 13
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
System HP Combinaon HP Compensaon
by System HP (kG)
8 8 - - - - 1.5
10 10 - - - - 1.7
12 12 - - - - 2.3
14 14 - - - - 2.3
16 16 - - - - 1.0
18 18 - - - - 2.0
20 20 - - - - 4.0
22 22 - - - - 5.0
24 24 - - - - 5.5
26 14 12 - - - 4.6
28 14 14 - - - 4.6
30 18 12 - - - 4.3
32 20 12 - - - 6.3
34 20 14 - - - 6.3
36 24 12 - - - 7.8
38 24 14 - - - 7.8
40 20 20 - - - 8.0
42 24 18 - - - 7.5
44 24 20 - - - 9.5
46 24 22 - - - 10.5
48 24 24 - - - 11.0
50 24 14 12 - - 10.1
52 24 14 14 - - 10.1
54 20 20 14 - - 10.3
56 24 20 12 - - 11.8
58 24 20 14 - - 11.8
60 24 24 12 - - 13.3
62 24 24 14 - - 13.3
64 24 20 20 - - 13.5
System HP Combinaon HP Compensaon
by System HP (kG)
66 24 22 20 - - 14.5
68 24 24 20 - - 15.0
70 24 24 22 - - 16.0
72 24 24 24 - - 16.5
74 24 24 14 12 - 15.6
76 24 24 14 14 - 15.6
78 24 20 20 14 - 15.8
80 24 24 20 12 - 17.3
82 24 24 20 14 - 17.3
84 24 24 24 12 - 18.8
86 24 24 24 14 - 18.8
88 24 24 20 20 - 19.0
90 24 24 22 20 - 20.0
92 24 24 24 20 - 20.5
94 24 24 24 22 - 21.5
96 24 24 24 24 - 22.0
98 24 24 24 14 12 21.2
100 24 24 24 14 14 21.2
102 24 24 20 20 14 21.3
104 24 24 24 20 12 22.8
106 24 24 24 20 14 22.8
108 24 24 24 24 12 24.3
110 24 24 24 24 14 24.3
112 24 24 24 20 20 24.5
114 24 24 24 22 20 25.5
116 24 24 24 24 20 26.0
119 24 24 24 24 22 27.0
120 24 24 24 24 24 27.5
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2) The quanty and size of indoor units installed.
(Qty and size of Standard indoor units, Air to Air Heat Exchangers, Fresh Air Units)
Addional refrigerant is added to the system for each indoor unit connected in the system, this is worked
out dependant on the type of indoor unit installed;
Fresh Air Intake Units, MMD-UP0481/0721/0961/1121/1281HFP-E/E1 - 0kg/HP
Standard Units, MMK, MMU (MH,HP,WH,YH), MMC, MMD (SPH, BH, H), MML (BH, H, NH), MMF = g7
High eciency 4-way blow cassee, MMU (UP####H-E) = g 8
Hot Water Modules, MMW (UP####LQ-E, AP####CHQ-E) = g 9
DX Coil Interfaces, M(C)MY-MHP####HT-E = g 10
3) The Diversity of the system,.
i.e the Total HP of the installed indoor units mulplied by the Total HP of the outdoor units forming the
system, (Outdoor units connected together electrically, via U5 & U6) the result is the Diversity, = g 11
4) Liquid Line Installed.
Measure the lengths of Liquid Line pipe installed, STRAIGHT PIPE ONLY, (Linear), DO NOT CALCULATE FOR
BENDS OR FITTINGS, mulply by the corresponding kg/m = g 12
Examples.
1) A 60HP system, MMY-UP6211HT8P-E ( 2x24hp (2 x MMY-MUP2401HT8P-E) + 1 x 12hp, (1 x MMY-MUP1201HT8P-
E), with 2 x 10hp,MMD-MUP0961HP-E1 (28kW-Cool, High Stac Ducted units) plus 8 x 4hp, MMDUP0361BHP-E
(11.2kW-Cool, Standard Ducted Units), plus 5 x 2hp, MMD-MUP0181BHP-E (5.6kW-Cool, Standard Ducted Units),
Indoor to Outdoor Diversity = 103.33%, Correct Charge 0kg, with 35m of 7/8” Liquid Line, 20m of 3/4” Liquid Line,
10m of 5/8” Liquid Line, 30m of 1/2” Liquid Line, 30m of 3/8” Liquid Line and 25m of 1/4” Liquid Line.
13.3kg + (2 x 1kg [2kg]+ 8 x 0.6kg [4.8kg]+ 5 x 0.4kg [2kg]) = 8.8kg + (35 x 0.370=12.25kg + 20 x 0.250=5kg + 10 x
0.160=1.6kg + 30 x 0.105=3.15kg + 30 x 0.055=1.65kg + 25 x 0.025=0.625kg) = 24.275kg + Diversity 0kg
13.3 + 8.8 + 24.275 + 0 = 46.375kg
2) A 60HP system, MMY-UP6211HT8P-E ( 2x24hp (2 x MMY-MUP2401HT8P-E) + 1 x 12hp, (1 x MMY-MUP1201HT8P-
E), with (2 x 10hp,MMD-MUP0961HP-E1 (28kW-Cool, High Stac Ducted units) plus) (8) 7x 4hp, MMDUP0361BHP-E
(11.2kW-Cool, Standard Ducted Units), plus 5 x 2hp, MMD-MUP0181BHP-E (5.6kW-Cool, Standard Ducted Units),
Indoor to Outdoor Diversity = (103.33%) 63.33%, Correct Charge (0kg) -2kg, with 35m of 7/8” Liquid Line, 20m of
3/4” Liquid Line, 10m of 5/8” Liquid Line, (30m) 10m of 1/2” Liquid Line, 30m of 3/8” Liquid Line and 25m of 1/4”
Liquid Line.
13.3kg + (2 x 1kg [2kg]+ (8) 7x 0.6kg [4.2kg]+ 5 x 0.4kg [2kg]) = 6.2kg + (35 x 0.370=12.25kg + 20 x 0.250=5kg + 10 x
0.160=1.6kg + (30) 10 x 0.105=1.05kg + 30 x 0.055=1.65kg + 25 x 0.025=0.625kg) = 22.175kg + Diversity -2kg
13.3 + 6.2+ 22.175 -2 = 39.675kg
Figures in red removed or modied on example 2.
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
-6-

In compliance with current F-Gas regulaons a label should be aached to the outdoor unit adjacent to
the Service Valves, with Factory Charge plus Addional Charge
example 1 (g 14), this would be 46.375 + 24.00 = 70.38kg
example 2 (g 15), this would be 39.675 + 24.00 = 63.68kg
(A label is provided within the installaon manual which accompanies the outdoor unit)
g 14 g 15
Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
46.38
24.00
70.38
39.68
24.00
63.68
Charging the system.
Keeping the valves of the outdoor unit/s closed, charge the liquid refrigerant, (By Weight) into the service
port of the liquid line valve.
If the required amount of refrigerant cannot be charged into the liquid line with the valves closed, fully
open the liquid and sucon valves of the outdoor unit/s, operate the system in the COOLING MODE, part
seat (Parally close), the sucon gas valve then charge liquid refrigerant into the sucon line service port.
Whilst adding refrigerant in this method, “choke” the refrigerant slightly by operang the valve of the
refrigerant cylinder or chargeing manifold, to maintain a liquid refrigerant ow, always charge refrigerant
gradually.
NOTE: In order to run the system in COOLING MODE, the system would need to be “Addressed”
-7-

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
Key changers between previous generaon Heat Pump VRF and the
current “U” generaon Heat Pump VRF are;
Where the outdoor unit is a stand-alone system, the unit needs seng up as a Header, this is done via the
“Dip Switches” located in the outdoor unit, switch SW101 bit 1 needs to be set to the ON posion, and
SW100 bit 2 also needs to be set to the ON posion.
The same rule applies when the outdoor unit is a part of a mulple system, i.e. up to 5 outdoor units can be
modulised to form a single system, in this situaon one outdoor unit needs to be congured as a “Header
Unit”, this would be the largest outdoor unit and it would be the outdoor unit nearest to the indoor units
via the installed pipe work.
Failure to follow the above would produce an “E19” error code.
g 16
If the equipment is to be connected to a central remote control or a BMS interface, then the
“System Address” might need amending.
When the equipment leaves the factory ALL units are congured to be System Address ONE, when one
or more unit is being connected to a single Central Remote / BMS interface, each outdoor unit must have
a unique system address, addresses available are 1 (Factory) to 28, system addresses MUST be amended
PRIOR to insgang the auto address procedure.
-8-

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
O = ON, X - OFF g 18
With the equipment powered down and BEFORE Auto Addressing, at each header unit give the system
a unique address via SW101 and SW102.
By default switches SW101 and SW102 (4-bits per switch) are in the OFF, (X - down) posion, using chart
g 3, give each system it’s own system address, starng with 1, (Factory), 2, 3 etc.
g 17
Line (System) address chart
g 19
-9-

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
On compleon of the inial sengs, if a central remote device or BMS interface is to be used on the
system leave the electrical connecons U3 & U4, (Uh) “DISCONNECTED”, apply power to the installaon
in the following order.
(Note:, Power must be applied to the outdoor units for a period of 12/24 hours BEFORE running the
system for the rst me, (This will energies the crankcase heaters), to avoid addressing errors or issues,
at the lead outdoor unit, disconnect the two core cable connected on terminals U1 & U2, (Uv).
Aer 12/24 hours, power down the outdoor unit/s, re-connect U1 & U2, then following the sequence
below.)
a) Apply power to all the indoor units. (Local wired remote controllers - (where installed), will display
either “Seng” or “A Timer symbol ” depending on model of remote installed, this will stay being
displayed unl the system has completed conguraon.)
b) Apply power to the outdoor units.
c) At the lead outdoor unit aer approx. 1 minute, the display will read,
U1-Err(U.1.ash) and L08 alternately at 1 second intervals.
d) Press SW06, this will start the automc addressng procedure.
The display will automacal scroll through and display AUTO 1 - AUTO 2 - AUTO 9
Seng is completed aer approx 10-15 minutes and the display changes to U.1.- - - (U.1. ash)
g 20
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Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
To check the systems conguraon set rotary switches SW01,SW02,SW03 as follows,
g 21
SW01 to [1], SW02 to [2], SW03 to [3], this will display the systems capacity, (8 to 120) HP
SW01 to [1], SW02 to [3], SW03 to [3], this will display the quanty of outdoor units (CDU) on the system, (1 to 5)
SW01 to [1], SW02 to [4], SW03 to [3], this will display the quanty of indoor units (FCU) on the system, (1 to 128)
If on compleon of the automac addressing the count of indoor units is lower than the actual, check if the
aected indoor unit/s wired remote controller displays “Seng” or the “Timer symbol ”, if there is no display,
check the power supply to the unit/s, if there is a display, check the interconnecng cables terminated at U1 & U2.
Once any anomalies have been idened and corrected, return to the “Header” outdoor unit (U1 - - -) and set the
rotary switches SW01, SW02 and SW03 to 2 -14 -2, briey press and hold SW04, the LED display will change and
will automacally scroll through “Auto 1 to Auto 9”, on compleon the display will revert to “U1 - - -”, set-up is
complete.
Set SW01,SW02 & SW03 to 1 - 4 - 3, the display will show the quanty of FCU’s idened, this should have
increased.
Re-set SW01,SW02 & SW03 to 1 - 1 - 1
To run the system in TEST COOLING MODE, set SW01 to 2, SW02 to 5 and SW03 to 1, push and hold SW04 for 2
seconds, all connected indoor units will now operate in a restricted / limited mode, NOT FULL LOAD.
Allow the system to run in Test Cooling Mode for 15 / 30 minutes.
To terminate re-set SW01 to 1, SW02 to 1 and SW03 to 1.
To run the system in TEST HEATING MODE, set SW01 to 2, SW02 to 6 and SW03 to 1, push and hold SW04 for 2
seconds, all connected indoor units will now operate in a restricted / limited mode, NOT FULL LOAD.
Allow the system to run in Test Heang Mode for 15 / 30 minutes.
To terminate re-set SW01 to 1, SW02 to 1 and SW03 to 1.
-11-

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
Conguraon
System 1 System 2
CDU Interface PCB U1 Header U2 Follower U3 Follower U1 Header U2 Follower
SW100 bit 1 ON OFF* OFF* OFF* OFF*
SW100 Bit 2 ON OFF* OFF* ON OFF*
SW101 bit 1 ON OFF* OFF* ON OFF*
SW102 bit 4 OFF* OFF* OFF* ON OFF*
* Factory Default
-12-
Addional Funcons.
Priority Mode - SMMSu - (Default Heang mode)
Two pipe heat pump systems operate in either heang or cooling modes, by default the SMMSu are
congured in the heang mode, any one indoor unit requesng heang will put the outdoor unit into
heang mode. This can be recongured to 1) Heang (default), Cooling, Majority (60% requesng same mode), Specic
indoor unit.
With the system powered up but NO indoor units running.
Set the rotary switches, SW01 = (9), SW02 = (1) and SW03 = (1) - (g21)
LED display shows “d n.S E t” Press SW04 LED display changes to “d n.0 0 1” (Outdoor unit DN Code (0 0 1)
Change “ODU DN code” by pressing SW05 to advance or SW06 to return.
When required DN code is reached, (0 1 8) press SW04 LED display blinks “d.* * * *” then the seng data “0 0 0 0”
is displayed. (Priority Heang – Default)
To change the Data, SW05 to advance and SW06 to return. (Available opons, 0 0 0 0 = Heang, 0 0 0 1 = Cooling, 0
0 0 2 = Majority, 0 0 0 3 Specic Indoor Unit)
Select required opon, Then press and HOLD SW04 for more than 2 seconds, (When ashing stops and display is
lit, seng is complete.)
Set rotary switches on Interface PCB back to SW01=(1), SW02=(1), SW03=(1)
Reset the power to the ODU, power o for one minute or more.
If a central control device is to be ulised, power down the CDU/s, connect the central device to the U3 & U4 (Uh)
terminals at the header (U1 - - -) CDU.
Set SW100 bit 1 to “ON” on the lowest numbered system, i.e. 3 systems addressed as 1, 2, 3, SW100 bit 1 on
system 1 would be turned ON, system 2 & 3 SW100 bit 1 OFF, re-apply the power
Example
g 22

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
-13-
Addional Funcons (connued).
Outdoor Fan High Stac Pressure Setup - SMMSu
This funcon is used when connecng a duct to the discharge outlet of an outdoor unit.
This funcon must be enabled with every discharge duct connected outdoor unit for both of the header
and follower units. It is necessary to increase the speed of the propeller fan units on the outdoor fan to
allow the installaon of a duct with a maximum external stac pressure not greater than specied. If a
discharge duct with a resistance greater than 15 Pa (1.5 mmAq) is to be used, enable this funcon. The
maximum external stac pressures of singular base units are shown below: -
Model MMY-MUP 0801* 1001* 1201*1 1401* 1601* 1801* 2001* 2201* 2401*
Maximum external stac pressure (Pa) 80 80 80 80 80 80 80 80 80
(#) Outdoor unit air ow (m3/min) 165 175 195 198 255 280 265 275 275
(#) Calculate duct resistance from outdoor unit airow. When units are combined maximum external stac pressure is the lower value of any single unit in the combinaon.
g 24
With the system powered up but NO indoor units running.
Set the rotary switches, SW01 = (9), SW02 = (1) and SW03 = (1) - (g21)
LED display shows “d n.S E t” Press SW04 LED display changes to “d n.0 0 1” (Outdoor unit DN Code (0 0 1)
Change “ODU DN code” by pressing SW05 to advance or SW06 to return. When required DN code is reached, (0 1
9) press SW04 LED display blinks “d.* * * *” then the seng data “0 0 0 0” is displayed. (Priority Normal – Default)
To change the Data, SW05 to advance and SW06 to return. (Available opons, 0 0 0 0 = Normal, 0 0 0 1 = High Stac)
Select required opon, Then press and HOLD SW04 for more than 2 seconds, (When ashing stops and display is
lit, seng is complete.)
Set rotary switches on Interface PCB back to SW01=(1), SW02=(1), SW03=(1)
Reset the power to the ODU, power o for one minute or more.
Note: There MUST be a clearance of 2m from the top of the fan guard to a solid obscal, (g 25), if the
clearance is lower than 2m, then discharge ducng MUST be installed.
g 25

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
5
-14-
SMMSu CDU’s are equipped with an in built diagnosc facility called the “Wave Tool Advance”, and is
accessed via an “NFC”, (Near Field Communicaon) and a smartphone, (smartphone need to have “NFC” facility).
The smartphone “app” is available for IOS (Apple) and Android, using the following link, the “app” can be
downloaded.
hps://www.toshiba-carrier.co.jp/global/appli/smms_wave_tool_advance/index.htm
Using the Wave Tool Advance applicaon (WTA App.), You can see, CDU model/s and serial number,
system capacity, FCU type and capacity, CDU dip switch sengs, test operaon, test
operaon result and simple report, just by opening the “app” and touching the smartphone to the NFC
“tag”, which is located on the top right of the CDU.
Android is a trademark of Google LLC.
Apple and the Apple Logo are trademarks of Apple Inc., registered in the U.S. and other countries and regions.
App Store is a service mark of Apple Inc.
IOS is a trademark or registered trademark of Cisco in the U.S. and other countries.

Cool Designs Ltd makes every effort to ensure that the information provided within this publication is correct and error free, however we cannot guarantee that it is free of inaccuracies,
errors or omissions. Users should seek to clarify this information for themselves prior to basing any decisions upon such information.
Contact details;
Cool Designs Ltd Technical Support
07590 775 510 / 07706 293 028
Monday - Friday 07.30 to 19.30
Email: [email protected]o.uk
Web site: www.cdlweb.info
Toshiba Air Condioning
24/7 technical support
0870 843 0333 (Opon 7)
Text back service
07624 803 017
(Type fault code in lower case, no spaces)
Cool Designs Ltd reserves the right to change the product specications, data and images without prior notice
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