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UATY280AMY12
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Daikin UATY280AMY12 [83/165] Appendix 3 6

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Manual 1
Introduction 4
Nomenclature 5
Scope of manual 5
Uaty280amy1 5
Figure 1 1 a 6
Return air duct 6
Roof top unit 6
Rubber damper 6
Shaft curb 6
Supply air duct 6
Figure 1 1 c 7
Return air duct supply air duct 7
Roof top unit 7
Rubber damper 7
Shaft curb 7
Concrete structure 8
Figure 1 1 d 8
Return air duct 8
Roof top unit 8
Supply air duct 8
Vibration isolator 8
Rt unit concrete plinth 9
Guidelines for duct penetration of roof 10
Vibration spring isolators 10
Duct penetration of roof 11
Spring isolator 11
C c f f 13
C c f f f f 13
C c t 2 13
61 386 2 14
C c factor damping 14
Damping 14
F v f v g π 14
F v x π 2 14
10 2 1 2 1 t c c 15
13 1 1 15
Example 1 15
Example 2 15
F f frequency natural isolator 15
Considerations for selection of vibration isolator 16
Installation of vibration isolator 16
Expansion bolts 17
Unit lifting 17
Hook as directly aligned over the center of gravity as possible 18
Space required around roof top unit 18
Condenser outlet 19
Duct positioning free from obstacle or obstruction 19
Uatp typ t ty700 850a uatpc typc tc tyc10 12a 19
Duct construction 20
Step 1 21
Step 2 21
Re install service panel 22
Re install top panel 22
Step 3 22
Step 4 22
Canvas fabric 23
Flange 23
Unit connection to duct via canvas joint filter slot 24
Duct sealing 25
Step 1 26
Step 2 26
Step 3 26
Angle iron rivetted onto duct 27
Band iron rivetted onto duct 27
Duct joint and reinforcement 27
Duct insulation 28
Duct supports 28
Fittings 28
Duct coating 29
Insulating ducts 29
Metal duct insulation 29
Ts surface temperature must be greater than dew point temperature to prevent condensation 29
Duct terminal 30
Economizer 30
Types of duct system 30
Economiser gravity damper nc 31
Example 31
Fresh air intake 31
Return air damper 31
Drain pipe installation 32
Fresh air intake damper 32
Pvc pipe 1 drain pipe 1 socket with threaded end adaptor 32
Rooftop 32
Screw in the adaptor to the drain pipe use ptfe white sb tape unit use contact adhesive 32
A 70 mm b 2c c 2xe s p 33
Drain piping 33
Drain trap 33
Not correct 33
Note esp external static pressure drain trap for condensate 33
The drain pipe should extend below this level 33
The drain piping should have a drain trap 33
Allow an inclination of 1 100 or more for this drain pipe run e g a drop of 1 for every 6 ft of pipe length 34
Drain trap 34
Filter performance 34
Filters 34
To nearest drain 34
200 300 400 500 600 700 800 900 1000 35
Air velocity ft m fpm 35
Initial 35
Resistance in w g 35
Resistance pressure drop vs air velocity 2 thickness 35
Nim sequential 36
Sequential controller 36
Installation for slm3 37
Example 40
Mode selection 40
Hot keep 41
Hot start 41
Protections 42
Sequential controller installation guide 42
Hot keep 45
Hot start 45
Protections 46
Installation of nim sequential 48
Mechanical control 50
Blower shaft 51
Motor pulley blower pulley 51
Motor shaft 51
Pulley and belt 51
V belt 51
Cross section of b type v belt 11 mm 53
Standard v pulley 53
Allen key 54
Arm outer diameter 54
Bearing puller arms 54
Grooves keyway 54
Installation of the pulley 54
Pitch diameter 54
Pulley motor 54
Turn with a wrench 54
Half hole blank 55
Half hole bore blank 55
Half hole threaded keyway 55
Key w t shaft diameter ds w h 55
Longitudinal slit 55
Taper lock pulley 55
Double v belts bore diameter pitch diameter 125mm 38 mm 56
Spz 125 1610 38 56
Taper bush no 1610 56
Adjustable pitch v belt pulley 57
Cross section of v belt 58
Fabric cover 58
Rubber compound polyester cords 58
V belt characteristic 58
Belt tensioning 59
For standard pulleys 59
Lb f 2 8 kg f 59
Type b sections force min force max 3 0 lb f 1 8 kg f 59
Charge pressure 60
Charge pressure spring pressure outlet pressure thermo valve equilibrium 60
Thermostatic expansion valves 60
Superheat setting 61
Ss os k 62
Cut a cross over the rubber bush 66
Do not cut off a piece 66
Motor change 66
Rubber bush around incoming wire hole beneath terminal box 66
Rubber gasket around terminal box tighten all screws properly motor body 66
Air throw 70
Direction of rotation 70
Incoming power supply cable 70
Just switch any of the two phases to reverse rotation 70
Motor rotation 70
Red yellow blue 70
Scroll housing volute 70
Electronic main control board 71
Star delta starter 71
Starter switchboard 71
Wire size and earth leakage circuit breaker 71
Contactor 73
Direct on line 73
In switchboard 73
Other starters 73
Overload protector 73
Simplified 73
U1 v1 w1 73
Appendix 1 76
Appendix 2 77
Appendix 3 1 78
Appendix 3 2 79
Appendix 3 3 80
Appendix 3 4 81
Appendix 3 5 82
Appendix 3 6 83
Appendix 4 1 84
Uatp typ ty180a 84
Appendix 4 2 85
Uatp typ t ty240 280 320a 85
Appendix 4 3 86
Uatp typ t ty450 560a 86
Appendix 4 4 87
Uatpc typc tc tyc10 12a 87
Appendix 4 5 88
Uatpc typc tc tyc10 12a 88
Appendix 5 1 89
Fig 58 joints and seams for low pressure systems 90
Fig 40 4 standard duct fittings 91
Figure 39 65 contined 92
Group 3 92
Table 1 surface conductances and resistances for air 95
Ceiling diffuser 98
Floor baseboard low sidewall high sidewall ceiling 98
Floor register baseboard register 98
High sidewall register 98
Perforated ceiling panel 98
Wall diffuser 98
Window slot 98
Control module of uatp t 180a 102
Control module of uatp t 240 280a 102
Control module of uatp t320a 103
Control module of uatp t450 560a 103
Control module of uatp t700 800a 104
Control module of uatyp ty180a 104
Appendix 12 4 105
Control module uaty240 280a 105
Control module uatyp240 280a 105
Appendix 12 5 106
Control module uatyp ty320a 106
Control module uatyp ty450 560a 106
Appendix 12 6 107
Connector for remote control wires 107
Control module uatyp ty700 850a 107
Control module uatypc tyc10 12a 107
Terminal block for power supply wires 107
Adress assignment for nim 108
Adress assignment for nim 109
C contactor compressor 30cz 30fz auxilliary relay check 110
C over current relay compressor c03 04 11 12 14 connector 110
F1 f2 fuse 3 5a 47 phase protector 110
F1 over current relay fan i d 110
Mc compressor motor 63h high pressure switch 110
Mf1 fan motor indoor fz auxilliary relay fan 110
Mf2 fan motor outdoor cz auxilliary relay compressor 110
Switch on 110
Symbol name symbol name 110
Thermostat room temp 110
Tr transformer 49f internal protector fan o d 110
Uat240amy1 uat280amy1 mechanical control 110
Uatp t240a 111
Uatp t280a 111
Appendix 14 4 113
Uatp t450a 113
Rt rt200a 114
Arrangement 115
Uaty240amy1 uaty280amy1 standard mechanical control 115
Uatyp ty240a 116
Appendix 14 8 117
Uatyp ty280a 117
Uatyp ty450a 119
Uatyp ty560a 120
Appendix 15 1 121
Appendix 15 2 122
Pulley outside dimensions are shown below unit mm 122
Appendix 15 3 123
Appendix 14 4 124
Appendix 15 5 125
Appendix 15 6 126
Appendix 15 7 127
Appendix 15 8 128
Appendix 15 9 129
Appendix 15 10 130
Appendix 15 11 131
Appendix 15 12 132
Appendix 15 13 133
Appendix 15 14 134
Appendix 15 15 135
Appendix 15 16 136
Appendix 15 17 137
Appendix 15 18 138
Appendix 15 19 139
Appendix 15 20 140
Appendix 15 21 141
Appendix 16 1 151
Are installed therefore do not change factory set value of over current relays 151
Appendix 16 2 152
Are installed therefore do not change factory set value of over current relays 152
Appendix 16 3 153
Are installed therefore do not change factory set value of over current relays 153
Appendix 16 4 154
To protect each fan motor and compressor from abnormal current overload protectors are installed therefore do not change factory set value of the overload protector 154
Appendix 16 5 155
To protect each fan motor and compressor from abnormal current overload protectors are installed therefore do not change factory set value of the overload protector 155
Appendix 16 6 156
Are installed therefore d o not 156
Change factory set value of over current relays 156
Appendix 16 7 157
Are installed therefore do not change factory set value of over current relays 157
Are installed therefore do not change factory set value of over current relays 158
Are installed therefore do not change factory set value of over current relays 159
Appendix 16 10 160
Are installed therefore do not change factory set value of over current relays 160
Appendix 16 11 161
Are installed therefore do not change factory set value of over current relays 161
Appendix 16 12 162
Are installed therefore do not change factory set value of over current relays 162
Appendix 16 13 163
To protect each fan motor and compressor from abnormal current overload protectors are installed therefore do not change factory set value of the overload protector 163
Appendix 16 14 164
To protect each fan motor and compressor from abnormal current overload protectors are installed therefore do not change factory set value of the overload protector 164

Daikin UATY280AMY12 [83/165] Appendix 3 6

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