Daikin AVB Installation And Maintenance Manual Download

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IM 817-7

2-Way Modulating Valve (Steam) - 3/4

The modulating control valves for MicroTech are designed

to regulate the flow of steam. They consist of a nickel

plated brass body and stainless steel ball valve and stem,

with a spring return, proportional actuator. The optional

valve accessory is shipped separate from the unit ventilator

for field installation to prevent shipping damage and to

provide flexibility in making the field piping connection.

Figure 74: 2-Way Modulating Valve (Steam) Dimensions

Table 20: Actuator Specifications

Power Supply

24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%

Electrical Connection

3ft [1m], 18 GA plenum cable with 1/2”

conduit connector

Overload Protection

electronic throughout 0° to 95° rotation

Input Impedance

100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω

for 4 to 20 mA

Feedback Output U

2 to 10 VDC (max 0.7 mA) for 95°

Angle of Rotation

90°

Position Indication

visual indicator, 0° to 95° (0° is full spring

return position)

Running Time (Motor)

150 sec constant, independent of load

Running Time (Fail-Safe)

<25 sec @ -4°F to 122°F [-20°C to 50°C], <

60 sec @ -22°F [-30°C]"

Ambient Temperature Range

-22°F to 122°F [-30°C to 50°C]

Storage Temperature Range

-40°F to 176°F [-40°C to 80°C]

Table 21: Valve Body Specifications

Service

high temperature hot water/low pressure

steam, up to 60% glycol

Flow Characteristic

A-port equal percentage

Controllable Flow Range

75°

Body Pressure Rating [psi]

600

Max Inlet Pressure (Steam)

15 psi

Media Temperature Range

(Water)

60°F to 266°F [16°C to 130°C]

Media Temperature Range

(Steam)

250°F [120°C]

Maximum Differential Pressure

(Steam)

15 psi

Max Differential Pressure

(Water)

60 psi partially open ball, 116 psi full open

Close-Off Pressure

200 psi

Table 22:

2-Way Modulating Valve 3/4″ – Dimensions

Valve Part No .

Connection Size

(inches)

B220HT731

7.31

3/4 inch

8.70" (221mm)

3.96" (101mm)

6.74" (171mm)

6.07" (154mm)

1.89" (48mm)

Table 23:

2-Way Modulating Steam Valve 3/4" – Pressure Drop

Pressure Drop Across the Valve

2-Way CCV Part

No .

Maximum

Rating

Connection

Size

2 PSI

3 PSI

4 PSI

5 PSI

10 PSI

15 PSI

B220HT731

7.31

3/4 inch

110.02

137.27

161.36

183.54

280.70

367.86

Summary of Contents for AVB

Page 1: ...d Maintenance Manual IM 817 7 Group WSHP Document PN 9102047358 Date October 2018 Daikin Classroom Unit Ventilators Floor Models AVS AVV AVB and AVR Digital Ready MicroTech Control J Vintage Field Controls by Others C ...

Page 2: ...Condensate Piping 36 Unit Ventilator Split Systems Guidelines 37 Checking System Charge 38 Determining Subcooling 38 Determining System Superheat 39 Superheat Adjustment 40 Making Control Connections 40 MicroTech Unit Mounted DDC Control Components Models AVS AVV and AVR 40 Typical MicroTech Wiring 115Volt 60Hz 1 Phase 44 MicroTech Unit Electrical Connections 46 MicroTech Wall Mounted Sensor 47 Ty...

Page 3: ...ic Heat 68 Steam Low Cap 13 6 Element Low Cap Electric Heat 69 Steam High Cap 65 1 Row HW 78 Opposite End Steam Low Cap 66 2 Row HW 79 Opposite End Steam High Cap 67 3 Row HW 00 None Hand Orientation 8 13 A Same Hand LH E LH Heating RH Cooling B Same Hand RH F RH Heating LH Cooling D RH Electric Heat Only R Single Coil Left Hand G RH Electric Heat LH Cool S Single Coil Right Hand Controls 9 14 15 ...

Page 4: ... carrier since such damage is the carrier s responsibility Storage If equipment is stored for any length of time before installation it should remain in its shipping packaging in a clean dry climate controlled area Lifting Unit A forklift or other lifting device is needed to install this product WARNING Make sure lifting equipment can handle the weight of the unit safely Personal injury may result...

Page 5: ...most serious hazards that will result in death or severe personal injury WARNING means the hazards can result in death or severe personal injury CAUTION identifies unsafe practices that can result in personal injury or product and property damage Improper installation adjustment service maintenance or use can cause explosion fire electrical shock or other conditions which may result in personal in...

Page 6: ... the unit itself A weather tight seal keeps unwanted air and moisture from entering the occupied space See Figure 6 on page 7 through Figure 21 on page 11 and Table 2 on page 10 for various louver details VentiMatic Shutter Assembly In many installations a Daikin VentiMatic Shutter Assembly is specified See Figure 5 This one way shutter is a continuously variable gravity actuated room exhaust vent...

Page 7: ...and Vertical Blade Louvers Without Flanges With Grille or With Flange Without Grille Louver drain lip Grille Louver with weep hole Flange Flange Outside Air Vertical Louver with Flange without Grille Horizontal Louver without Flange with Grille Locate Drain Lip at bottom of vertical louver to allow proper drainage For horizontal louvers the louver blades should face down for proper drainage Bird s...

Page 8: ...Lintel By Others Accumulatedmoisturecancausepropertydamageifnotproperly drained Installing contractor must provide such drainage CAUTION Figure 11 Above Floor Level Outdoor Air Intake Using Arrangement AV or AL With Accessory Closed Pipe Tunnel Piping Floor Line Lintel By Others Intake Louver Not Less Than 3 Not More Than 28 Insulated Closure Plate Accessory Provide Drainage Important Gasket seali...

Page 9: ...ith High Louver Application Not More Than 28 711mm Sealed Cement Mortar Pitch Away From Unit Important Gasket sealing surface is required Louver Lintel By Others Piping Piping Floor Line Unit Configuration Type AP Figure 15 The 21 7 8 556mm Deep Full Adapter Back Unit with Closed Pipe Tunnel Ducted with Top Intake Important Gasket sealing surface is required Intake Louver Piping Piping Window Sash...

Page 10: ...tar base is 1ʺ 25mm thick at the unit and tapers toward the louver The mortar at the unit also acts as a backing against which the open cell gasket of the unit itself can seal This is critical in preventing water leaks and air leaks under the unit Be sure the sealed cement mortar base is smooth and flush with the interior wall If it is not possible to construct a sloping mortar base then field sup...

Page 11: ... Pitched Away from Unit Toward Louver Figure 21 Vertical or Horizontal Blade Wall Intake Louver Recessed Without Flange Horizontal Blade Shown Drain Holes Do Not Block With Mortar or Caulking Materials Bird Screen Sealed Cement Mortar Pitched Away from Unit Toward Louver 1 Minimum Lintels By Others Louvers Installing the VentiMatic Shutter Assembly The VentiMatic Shutter Assembly is mounted on an ...

Page 12: ...d while supporting the unit from the front until it is possible to slide skid out from under the unit GENTLY LOWER the rear of the unit to the floor 3 Figure 25 Removing Unit from Skid 1 Carefully slide the front of the unit off the front of the skid Approx 10 2 While supporting unit from the front slowly tip unit forward until bottom of kickplate is resting on floor Lift skid slightly and GENTLY ...

Page 13: ...cal power before servicing unit to prevent injury or death due to electrical shock DANGER Personal injury hazard Wear protective gloves to avoid possible cuts and abrasions from exposed edges Avoid contact with sharp edges CAUTION Procedure If the unit has a cooling coil check the condensate drain pan to be sure it slopes down toward the drain stub up end To do so compare the right and left hand d...

Page 14: ...allow Upper Plate Deep Lower Bracket Drain Pan Standard Drain Connection 1 4 hex head screws To Clean the Drain Pan 1 Remove the shallow and deep upper plates from the unit 2 Spray water into the drain pan on the high end to wash debris to the low end drain end 3 Remove any debris making sure that the drain holes are not obstructed 4 Wipe the drain pan with a cloth 5 Reinstall the upper plates ...

Page 15: ...Caulk Weep Holes Floor Unit Insulating Blanket Back Of Unit Unit Bottom Gasket Seal Under Unit Bird Screen Internal Column For Wall Bracing By Others Unit Gasket 1 End Panel w Cut Out Lintel by others Unit Outside Air Opening Figure 33 Typical VentiMatic Shutter Assembly Installation see installation section for typical warnings and cautions Louver Unit Ventilator Outdoor Air Opening Outside Rooms...

Page 16: ...d chilled water supply and return system are thoroughly flushed and cleaned before connecting piping to the unit ventilator Debris in the lines can damage the unit For All Systems Be sure to install the control valve s on the correct unit ventilator Indiscriminate mixing of valves in the field can result in valves improperly sized for the desired flow rate which can result in poor operation and co...

Page 17: ... unions for future servicing by others Air Flow Figure 39 Protect Components From Overheating Before Brazing Use A Quenching Cloth When Brazing to Prevent Overheating The Piping Components Avoid Valve Damage and Erratic Operation 2 pipe Chilled Water Hot Water Systems After making the piping connections securely attach and insulate the water in temperature sensor OCT to the water coil supply line ...

Page 18: ... valve and a 24ʺ 610mm long pressure equalizing line which terminates in a 1 2ʺ M P T fitting 3 Steam hot water connections may be same end as cooling coil connections but they are recommended to be opposite end to facilitate piping Must be opposite end when using Daikin controls 4 Cooling condensate drain pan is shipped sloped down towards the cooling coil connections but is field reversible 5 El...

Page 19: ... and return connections 2 Steam coils have a factory installed pressure equalizing valve and a 24ʺ 610mm long pressure equalizing line which terminates in a 1 2ʺ M P T fitting 3 Steam hot water connections may be same end as cooling coil connections but they are recommended to be opposite end to facilitate piping Must be opposite end when using Daikin controls 4 Cooling condensate drain pan is shi...

Page 20: ...Vent Plug HW DX Heating Right Hand R S 13 3 4 350mm A B J Air Flow Vent Plug HW DX 8 1 2 216mm S Supply R Return Direct Expansion and Steam Unit Note For opposite end drain steam coils code 78 79 Return R is 7 184mm from bottom of unit and H 2 51mm from the back of unit Unless otherwise noted LH and RH connections are the same Figure 53 Direct Expansion Cooling Coils G 9 14 1 4 368mm J 10 1 8 257m...

Page 21: ...ne SL Suction Line LL SL J D C 7 1 4 184mm Air Flow 11 3 4 299mm Cooling Left Hand Table 6 Coil Connection Dimensions For Lettered Values1 Unit Depth Dimensions A B C D E F G H I J K in 16 5 8 3 3 4 12 1 4 4 7 8 7 3 4 1 5 8 10 1 8 2 3 4 2 7 8 5 5 8 3 5 mm 422 95 311 124 198 41 257 70 73 143 76 127 in 21 7 8 9 17 1 2 10 1 8 13 6 7 8 15 3 8 8 8 1 8 10 7 8 8 1 4 10 1 4 mm 556 229 445 257 330 175 391 ...

Page 22: ... bottom of unit and H 2 51mm from the back of unit Unless otherwise noted LH and RH connections are the same Figure 63 Direct Expansion Cooling Coils G 9 14 1 4 368mm J 10 1 8 257mm R S H K Air Flow J R S H K 14 1 4 368mm Air Flow Heating Left Hand Heating Right Hand LL SL J D C 7 1 4 184mm Air Flow 11 3 4 299mm Cooling Right Hand LL Liquid Line SL Suction Line DX D X S t e a m 10 1 8 257mm LL SL ...

Page 23: ... ends Face Bypass End of Cycle Valves 2 Way End of Cylce Valve When piping the 2 Way End of Cycle valve refer to label to determine the direction of flow The valve should be installed so that there is a 2 51mm minimum clearance to remove the actuator from the valve body Provide unions for removal of unit coil and or control valve as a future service consideration Hot water connections may be same ...

Page 24: ... When using MicroTech controls they must be opposite end The End of Cycle valve accessory must be field installed on the unit for which it was selected Figure 70 3 Way EOC Valve Dimensions Connection Cv Y 3 4 19mm FNPT 5 0 15 16 24mm Figure 71 2 Way EOC Steam Valve Dimensions Connection Cv X Y Z 1 25mm FNPT 8 0 1 47mm 1 25mm 311 16 94mm Table 10 EOC Actuator Specifications Control 2 Position Elect...

Page 25: ...rn position Running Time Motor 95 sec Running Time Fail Safe 25 sec Ambient Humidity max 95 RH non condensing Ambient Temperature Range 22 F to 122 F 30 C to 50 C Storage Temperature Range 40 F to 176 F 40 C to 80 C Table 13 2 Way Valve Body Specifications CW HW CW HW Service chilled hot water up to 60 glycol Flow Characteristic equal percentage Controllable Flow Range 75 Body Pressure Rating psi ...

Page 26: ...Running Time Motor 95 sec Running Time Fail Safe 25 sec Ambient Humidity max 95 RH non condensing Ambient Temperature Range 22 F to 122 F 30 C to 50 C Storage Temperature Range 40 F to 176 F 40 C to 80 C Table 17 Valve Body Specifications Steam Service high temperature hot water low pressure steam up to 60 glycol Flow Characteristic A port equal percentage Controllable Flow Range 75 Body Pressure ...

Page 27: ...ion Running Time Motor 150 sec constant independent of load Running Time Fail Safe 25 sec 4 F to 122 F 20 C to 50 C 60 sec 22 F 30 C Ambient Temperature Range 22 F to 122 F 30 C to 50 C Storage Temperature Range 40 F to 176 F 40 C to 80 C Table 21 Valve Body Specifications Service high temperature hot water low pressure steam up to 60 glycol Flow Characteristic A port equal percentage Controllable...

Page 28: ...Fail Safe 25 sec Ambient Humidity max 95 RH non condensing Ambient Temperature Range 22 F to 122 F 30 C to 50 C Storage Temperature Range 40 F to 176 F 40 C to 80 C Table 25 3 Way Valve Body Specifications CW HW CW HW Service chilled hot water up to 60 glycol Flow Characteristic A port Equal percentage B port modified linear for constant flow Controllable Flow Range 75 Body Pressure Rating psi 600...

Page 29: ...t can begin to have any influence on the water flow through the coil The control system no matter how sophisticated cannot overcome this Oversized control valves can also result in hunting which will shorten the life of the valve and actuator and possibly damage the coil To correctly select the proper Chilled Water Modulating Valve 1 Determine the flow of water and the corresponding pressure drop ...

Page 30: ...on provide unions for removal of the unit coil and or the control valve Heating Hot Water End of Cycle Valve Piping The 2 way End of Cycle hot water or 2 pipe CW HW valve is furnished normally open to the coil When the valve is de energized off there is full flow through the coil Energizing the valve shuts off the water flow Figure 78 Typical 2 Way End of Cycle Valve Water Piping Return Return Bal...

Page 31: ...n Return Balancing and Shutoff Valve Shutoff Valve Supply Supply 2 way EOC Valve Unit Coil Unions A B Note For Erie E O C water valves always have the direction of water flow piped to the B port of the valve Typical Water Coil Piping EOC Valve Piping Figure 80 Face and Bypass With 3 Way End of Cycle Valve Piping Within Unit End Compartment 2 3 4 5 6 7 8 15 1 OCT Sensor Figure 81 Face and Bypass Wi...

Page 32: ...e end as cooling coil connections but are recommended to be opposite end to facilitate piping When using Daikin factory controls they must be opposite end The modulating valve accessory must be field installed on the unit for which it was selected Figure 82 Typical 2 Way Steam Modulating Valve Piping Unit Coil A AB Return Supply Unions Shutoff Valve Shutoff Valve Equalizing Line Return Supply Stea...

Page 33: ...w Note Left Hand Steam Supply and Right Hand Steam Return Shown Typical Steam Coil Piping Figure 86 Face and Bypass With 2 Way End of Cycle Valve Same End Drain Connection Piping Within Unit End Compartment 14 13 4 6 7 8 15 9 Figure 87 Face and Bypass With 2 Way End of Cycle Valve Same End Drain Connection Piping Outside Unit End Compartment 13 14 4 6 7 15 9 15 15 Table 30 Number Descriptions for ...

Page 34: ...Open Hot Water or 2 pipe CW HW Valve Piping typical The 2 way Modulating hot water or 2 pipe CW HW valve is furnished normally open to the coil When the valve is de energized off there is full flow through the coil Energizing the valve reduces the volume of water flow in a modulating fashion Figure 88 2 Way Modulating Valve Control Normally Open Hot Water or 2 pipe CW HW Piping Unit Coil A AB 2 Wa...

Page 35: ... Figure 90 2 Way Modulating Valve Control Normally Closed Chilled Water Piping Return Return Balancing and Shutoff Valve Shutoff Valve Supply Supply 2 way Modu lating Valve Unit Coil Unions Figure 91 2 Way Modulating Normally Closed Chilled Water Valve Piping 3 Way Modulating Normally Closed Chilled Water Valve Piping typical The 3 way Modulating chilled water valve is furnished normally closed to...

Page 36: ...ss of the material Likewise insulate the suction line See Figure 95 through Figure 98 for typical piping and wiring Ensure proper insulation of supply and return piping Proper insulation prevents loss of unit ventilator capacity overheating of end compartment and or moisture dripping NOTICE Ensure refrigerant pressure taps are installed in piping end compartment for proper charging and setting of ...

Page 37: ...Incorporate Compressor Time Delay 5 minute in condensing unit control system reduces excessive compressor cycling see Figure 98 on page 39 Single phase compressors consider hard start kits to overcome non equalized pressure in refrigerant lines Figure 95 Typical Piping and Wiring for Split System 2 Wires Ground To Open Sight Drain TXV Thermal Expansion Valve Filter Drier Field Supplied Moisture In...

Page 38: ...charge should be checked under design conditions 95 F outside air 80 F 67 F DB WB indoor air Refer to condensing unit manufacturer s guidelines Before adjusting refrigerant charge verify that the unit ventilator is operating at normal design cfm Nominal cfm is determined with a dry coil and cfm will be reduced during air conditioning operation with a wet coil Filters and coil must be clean and fan...

Page 39: ...essary to adjust TXV to obtain correct superheat Table 32 Saturated Temperature Pressure Chart ºF R410A PSIG ºF R410A PSIG ºF R410A PSIG 32 101 1 44 127 7 80 235 8 33 103 2 45 130 2 85 254 7 34 105 2 46 132 6 90 274 5 35 107 4 47 135 1 95 295 5 36 109 5 48 137 5 100 317 6 37 111 7 49 140 1 105 340 9 38 113 9 50 142 6 110 365 4 39 116 2 55 147 0 115 391 2 40 118 4 60 170 1 120 418 3 41 120 7 65 185...

Page 40: ...r a local peer to peer network between these units network wiring between these units needs to be field installed Optional network communication is provided via plug in communication modules that connect directly to the UVC 2 Communication Module optional Plug in network communication module that is attached to the UVC via a 8 pin header and 4 locking standoffs Available communication modules Buil...

Page 41: ...ading Edge indoor outdoor true enthalpy comparison economizer The sensor is located in the outdoor air section of the unit before the outdoor air damper With network applications the unit mounted sensor can be overridden by a remote sensor through the network 17 Room Humidity Sensor IH optional Unit mounted humidity sensor for units capable of passive or active dehumidification or with units using...

Page 42: ...ntrol Board Note If Installing Communication Module refer to the installation instructions specific to that Communication Module Figure 100 AV Top View 3 Figure 101 MicroTech Sensor and Component Locations 1 2 5 6 7 8 10 9 4 Front View 12 11 13 15 16 17 14 18 ...

Page 43: ...des for quick diagnostics at the unit The LUI has a built in menu structure Password protected with 4 keys and 2 individual LED indicators to adjust the unit ventilator operating parameters shown in the following Operating Mode States 4 Heat Heating and economizer operation only Cool Cooling and economizer operation only Fan Only Fan operation only Auto Unit automatically switches between heating ...

Page 44: ...IM 817 7 44 www DaikinApplied com Typical MicroTech Wiring 115Volt 60Hz 1 Phase Note See on page 45 for typical MicroTech service and disconnect wiring and wiring schematic legend ...

Page 45: ... R4L Relay Fan Low Speed TBE Terminal Block Electric Heat FC FD Fuse Control Transformer R32 Relay Drain Pan Heater TR1 Transformer Motor Speed HP High Pressure Switch R28 Relay Outdoor Motor Air TR3 Transformer 208 230V 24V 75VA EH1 6 Heater Electric RV Reversing Valve TR4 Transformer 460V 230V EH10 Heater Outdoor Drain Pan RAT Sensor Room Air Temperature TR5 Transformer 208 230V 24V FMI Motor Ro...

Page 46: ...t ventilator electric connection box to load side of unit power switch switch provided by Daikin The junction box has 1 25mm and 2 51mm knockouts located 10 1 2 267mm from right end of unit 3 Provide ground wire from grounding screw in switch junction box to switch ground terminal 4 Wire field power supply to line side of unit power switch Wire ground conductor to switch ground terminal 5 Mount un...

Page 47: ...ir sensor then placement of the Remote Wall Mounted Temperature Sensor is critical for proper room temperature sensing see Figure 107 and Figure 108 The UVC is capable of using one of four remote wall mounted temperature sensors It is recommended that additional wires be pulled to compensate for potential wire breakage or future options 6 Button Digital Adustable Sensor PN 910247458 8 wires 4 Butt...

Page 48: ...g at back of Local User Interface LUI Panel Plug for unit mounted sensor Sensor Functions Display sensor to show room Temperature fan speed AUTO HIGH MEDIUM LOW system mode HEAT COOL AUTO OFF ALARM Override and occupancy Mounting Location Avoid mounting on outside walls or in direct sunlight Junction Box J Box 1 Pull the wire through the wall and out of the junction box leaving about six inches fr...

Page 49: ...y cotton cloth Do not use any type of cleaner as it may damage the buttons or scratch the display Do not paint Terminations Daikin Applied recommends using shielded 22AWG for all connections and a separate twisted pair for the power wire connections The shield should be earth grounded only at the power source Larger gauge wire may be required for runs greater than 250 Figure 111 Sensor Circuit Boa...

Page 50: ...sor 910247453 Sensor 910247450 Description 24VAC Occupancy Shutdown Not Used Status LED Setpoint Unit Mode Fan Speed 10K RTD Ground Wire 908 907 906 909 912 901 902 911 910 Typical Wiring Terminal Label R U 1 ST 3 SP 2 FM 6 FC 4 UTS 5 GND Description 24VAC Unoccupied Unit Status Output Setpoint Adjust Unit Mode Fan Speed Room Temp Sensor Tenant Override Ground Room Temperature Sensor Terminal Desi...

Page 51: ...d cuts out below 38 F 2 F and automatically resets above 45 F 2 F Responds when any 15 of the capillary length senses these temperatures Wired so that upon T6 cut out the outside air damper A1 closes the hot water valve opens and the 24 volt power supply to the terminal strip T6 Sig is interrupted 9 Discharge Air Temperature Sensors S2 10 K ohm NTC Negative Temperature Coefficient and 1 K ohm PTC ...

Page 52: ...IM 817 7 52 www DaikinApplied com Figure 112 Component Locations Vertical Floor Unit Shown 1 2 3 4 5 7 8 9 10 12 11 6 13 15 Outdoor Air Opening Sensor Motor ...

Page 53: ...www DaikinApplied com 53 IM 817 7 Typical Wiring Diagram Digital Ready Face and Bypass Control CAUTION Refer to unit wiring diagram located on the right front panel for actual wiring ...

Page 54: ...ohm NTC sensor is constructed from stainless steel with an epoxy seal and twisted wire leads Type 10K ohm 25 C Accuracy 0 2 F 40 F 80 F 0 36 F 32 F 158 F 1 K ohm PTC Sensor The 1 K ohm sensor is a shrink wrap encapsulated PTC silicon sensing element with stranded tinned copper wire leads 22 AWG Type 1035 ohm 25 C Accuracy 0 9 F 5 F 167 F Figure 113 Sensor Locations Discharge Air Sensor Room Air Se...

Page 55: ... Unit Ventilator Controller UVC A 4 to 20 mA input signal can be used with the field addition of a Belimo ZG R01 or equivalent 500 ohm resistor by others Refer to the wiring diagram for proper installation of the resistor A 2 to 10 VDC output signal is provided for damper position feedback The gears can be manually disengaged with a button on the actuator cover Rotation is counterclockwise to bypa...

Page 56: ...h unit nameplate CAUTION Use copper conductors only Use of aluminum conductors may result in equipment failure and overheating hazards All wiring in right hand compartment must be class 1 2 Wire leads provided from unit ventilator electric connection box to load side of unit power switch switch provided by Daikin The junction box has 1 25mm and 2 51mm knockouts located 10 1 2 267mm from right end ...

Page 57: ... Air Temperature limit T6 freezestat across leaving air side of hydronic heating coil Cuts out below 38 F 2 F and automatically resets above 45 F 2 F Responds when any 15 of the capillary length senses these temperatures CAUTION It is the responsibility of the Automatic Temperature Control supplier to ensure the T6 freezestat is incorporated properly to protect the unit 5 Low Refrigerant Temperatu...

Page 58: ...ols Making Control Connections For field provided control wiring connections refer to the appropriate control wiring schematic page 59 or page 60 Connect the field supplied controller to the harness provided A 0 10VDC fan control signal must be provided between ground and wire 33 For RPM data out signal connect controller to wire 34 The variable fan speed scale is linear between a minimum 50 airfl...

Page 59: ...3 Fuse FB wire 56 furnished on 208 230 volt units only 4 T6 wires 550 551 furnished only on units with hot water or chilled water all others connect transformer wire to wire 501 6 Jumper wire A must be connected to pins 1 2 for 120V only 7 Automatic temperature control can be wired to TB DX for DX cooling operation Typical operation is to wire from the TB DX to a normally open relay with the relay...

Page 60: ...nsible to ensure controls operate correctly and protect the unit 3 Cap all unused transformer leads 4 X3 unused terminal 2 or 3 must be insulated 5 Fuse FB wire 56 57 furnished on 208 230 volt units only 6 1K thermistor is positive temperature coefficient 10K thermistor is negative temperature coefficient 7 Actuators 24VAC for 2 to 10 VDC control input For a 4 to 20 mA input control signal add a 5...

Page 61: ...aikinApplied com 61 IM 817 7 Controls by Others Field Installed CAUTION Refer to unit wiring diagram located on the right front panel for actual wiring Improper wiring can cause equipment and property damage ...

Page 62: ...of unit power switch switch provided by Daikin The junction box has 1 25mm and 2 51mm knockouts located 10 1 2 267mm from right end of unit 3 Provide ground wire from grounding screw in switch junction box to switch ground terminal 4 Wire field power supply to line side of unit power switch Wire ground conductor to switch ground terminal 5 Mount unit power switch in switch junction box and install...

Page 63: ...3 IM 817 7 Figure 122 Controls by Others Unit Power and Junction Box Connection Location Auto Transformer Fuses High Med Low Off Motor Speed Switch Switch Junction Box Terminal Strip Electric Power Wire Opening in Back of Box ...

Page 64: ...pplied com Electric Heat Wiring Diagram Typical Figure 123 460 Volt 60 Hz 3 Phase CAUTION Refer to unit wiring diagram located on the right front panel for actual wiring Improper wiring can cause equipment and property damage ...

Page 65: ...0 80 55 100 70 130 80 150 230 60 1 Electric Heating Amperes 25 04 50 09 33 18 66 37 41 63 83 27 50 09 100 17 Unit Minimum Circuit Ampacity 34 40 65 71 44 58 86 06 55 14 107 19 65 71 128 32 Maximum Fuse Size or Circuit Breaker Amps 35 70 45 90 60 110 70 130 265 60 1 Electric Heating Amperes 21 74 43 59 28 85 57 70 36 17 72 33 43 59 87 07 Unit Minimum Circuit Ampacity 30 28 57 59 39 16 75 22 48 31 9...

Page 66: ...68 81 47 68 89 16 58 24 110 29 68 81 131 42 Maximum Fuse Size or Circuit Breaker Amps 40 70 50 90 60 120 70 140 265 60 1 Electric Heating Amperes 21 74 43 59 28 85 57 70 36 17 72 33 43 59 87 07 Unit Minimum Circuit Ampacity 33 38 60 69 42 26 78 32 51 41 96 62 60 69 115 04 Maximum Fuse Size or Circuit Breaker Amps 35 70 45 80 55 100 70 120 208 60 3 Electric Heating Amperes 16 70 33 30 22 20 44 40 2...

Page 67: ...s 40 of the total outside wall area 2 Single pane glass is used 3 Outside temperatures are below 35 F for a significant portion of the occupied period The need for window down draft protection will not always be so clear cut Where uncertainty exists a further check can be made by calculating the window heat loss at an outdoor temperature of 35 F If estimated window heat loss exceeds 250 Btuh Ft wi...

Page 68: ...ons included with the Draftstop system for more detailed information Upper Channel or Backplate Assembly 1 Establish a level chalk line on the wall at a height specified for the top of the enclosure Select mounting hardware which is suitable for the type of wall construction used and mount the upper channel or backplate flush with the chalk line When mounting use the prepunched holes and push the ...

Page 69: ...57mm 4 102mm 1 25mm 277 8 708mm 18 457mm 4 102mm 1 25mm End View With 4 x 22 102mm x 559mm Cut out 277 8 708mm 22 559mm 4 102mm 1 25mm 277 8 708mm 22 559mm 4 102mm 1 25mm End View With 2 x 51 4 51mm x 133mm Step Down 277 8 708mm 2 51mm 5 1 4 133mm Table 46 1 25mm End Panel Dimensions Non Standard 28 Deep Floor Unit Ventilators All Dimensions in Inches 28 711mm Deep End Panels Top View 28 711mm 1 2...

Page 70: ...op View 28 711mm 6 152mm End View With No Cut out 277 8 708mm Finned Radiation System Finned radiation down draft control is available for those who prefer it Made of furniture quality steel and designed to complement the unit ventilator styling it is particularly appropriate for a building with very large expanses of window where the DraftStop system is not used and for use in other parts of the ...

Page 71: ...o tinnerman clips on unit subbase Screws insert through upper mounting holes inside unit end compartment and thread into tinnerman clips on end panel End Panel w Cut out Figure 132 Install End Panels With Provided Hardware 6 End Panel Shown End Panel YC 1934 End of Unit 1 4 20 Tinnerman Nut Clip on End Panel 1 4 20 x 1 2 Screw 1 4 Flat Washer 1 4 20 Tinnerman Nut Clip Over Lower Hole in Unit Corne...

Page 72: ...Remove debris dust dirt and any obstruction from the area in front of the return air intake grille at the floor as this will affect unit performance If a draftstop system has been installed be sure that all draftstop intake grilles are unobstructed 1 Before proceeding inspect the fan system ensure all parts are aligned properly and move freely Inspect fans and fan discharge area for obstructions R...

Page 73: ...components CAUTION Dirty or clogged filters can impact unit performance resulting in damage to the unit Figure 135 Filter installation 12 Left Front Access Panel Motor 12 Right Front Access Panel Top Access Doors Filter Renewable Media Single use and Permanent Wire Mesh Filters Also Available Structural Frame Complete Check Test and Start Procedure Included in the shipping envelope in the end comp...

Page 74: ...________________________ Supply Voltage L1 L2___________ L2 L3___________ L3 L1____________ Rated _ _____________________________ Room Fan Motor Amps T1 ___________ RPM_ _________ Nameplate Rating _ ___________________________ I Initial check A Does electrical service correspond to unit nameplate Yes No B Are all electrical power connections tight Yes No C Does all field wiring conform to unit ele...

Page 75: ...tion system A Has all field piping been leak tested to 100 psig AVS AVV AVR AHF AHV AHR Yes No B Is expansion valve bulb properly installed and insulated Yes No C High pressure control cutout if applicable _________ psig D Crankcase heater operating O K Yes No E Reversing valve operating O K Yes No F Emergency heat operating O K Yes No G Piping correct AVS AVV AVR AHF AHV AHR to remote condensing ...

Page 76: ...andard terms and conditions of sale including Limited Product Warranty Consult your local Daikin Applied representative for warranty details Refer to Form 933 430285Y To find your local Daikin Applied representative go to www DaikinApplied com Aftermarket Services To find your local parts office visit www DaikinApplied com or call 800 37PARTS 800 377 2787 To find your local service office visit ww...

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