Daikin RDT Installation And Maintenance Manual
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Daikin RDT Installation And Maintenance Manual

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See also: Manual
Installation and Maintenance Manual
RoofPak
Singlezone Heating and Cooling Units
®
RPS/RDT/RFS/RCS 015D—140D
with MicroTech
III Unit Controller and Refrigerant R-410A
®
IM 893-10
Group: Applied Air Systems
Part Number: IM 893
Date: July 2017

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  • Page 1 Installation and Maintenance Manual IM 893-10 Group: Applied Air Systems Part Number: IM 893 Date: July 2017 RoofPak Singlezone Heating and Cooling Units ® RPS/RDT/RFS/RCS 015D—140D with MicroTech III Unit Controller and Refrigerant R-410A ®...

  • Page 2: Table Of Contents

    able of onTenTs able of onTenTs Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Unit Options .

  • Page 3: Introduction

    This manual provides general information about the “D” vintage Compressor Nameplate Daikin RoofPak applied rooftop unit, models RPS, RDT, RFS and RCS. In addition to an overall description of the unit, it On units that utilize the tandem compressor design, each...

  • Page 4: Unit Description

    RPS unit with the locations of the major components. Figure 4 shows a typical RDT unit with the locations of the major components. These figures are for general information only. See the project’s certified submittals for actual specific dimensions and locations.
  • Page 5 Figure 4: Component Locations—RDT Units 1.5 NPT drain www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...

  • Page 6: Refrigeration Piping

    nTroduCTIon Refrigeration Piping This section presents the unit refrigeration piping diagrams for the various available configurations. Figure 5: Circuit Schematic A Compressor (1, 2, or 3 per circuit) † B Discharge line † C Condenser coil † D Evaporator coil * E Manual charging/evacuation valve †...

  • Page 7: Control Locations

    (optional) S10, R EC10 (optional) ACT3 * Only for VFD Compressor Units ACT6 (optional) S11, RAE (optional) REC11 LT11 (optional) Figure 8: Control Locations—RDT Units SC11, 21 (optional) OOE* Condenser Comp* SV11* section C11, 21 SV9, SV10* (optional) Supply fan...

  • Page 8: Control Panel

    nTroduCTIon Control Panel The unit control panels and their locations are shown in the from these figures depending on the particular unit options. following figures. These figures show a typical unit See Wiring Diagrams on page 51 for the legend and configuration. Specific unit configurations may differ slightly component description.
  • Page 9 nTroduCTIon Figure 10: Typical Main Control Panel, 045D to 075D, 460 Volt www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 10 nTroduCTIon Figure 11: Typical Main Control Panel, 080D to 140D, 460 Volt IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 11 nTroduCTIon Figure 12: Typical Gas Heat Panel, 1000 MBh (High TD) Figure 13: Typical Prop Exhaust Panel, 3 Fans, 460 Volt TD10 TB11 AFD20 GND Figure 14: VFD Bypass Panel, 40 HP, 460 Volt FSG Time www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 12 nTroduCTIon Figure 15: RCS Control Panel with MicroTech III, RPS 045D to 079D Figure 16: RCS Control Panel with MicroTech III, RPS 080D to 140D IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 13 nTroduCTIon Figure 17: Electric Heat Panel, Sizes 045D to 79D Figure 19: Electric Heat Panel, Sizes 080D to 140D FB33 FB32 FB31 FB33 FB32 FB31 FB44 FB34 FB43 FB42 FB41 TB11 FB43 FB42 FB41 TB11 GLG3 GLG3 Figure 18: VFD Compressor Panel, SIzes 016D–074D (M3) (M4) (Local...
  • Page 14 nTroduCTIon Figure 20: Harness Plug Connector Detail RATS DATS OATS EPTS OPEN1 AFD10 AFD20 SV12 SV56 ACT3 OPEN2 HL22 OPEN3 GSHT1 GSHT2 DFRH DFLH OPEN4 COMP1 COMP2 COMP3 COMP4 COMP5 COMP6 LT10 LT11 LT OP1 LT OP2 IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...

  • Page 15: Controls, Settings And Functions

    nTroduCTIon Controls, Settings and Functions Table 2: Controls, Settings, and Functions Symbol Description Function Reset Location Setting Range Differential Part No . Switch (toggle), Shuts off compressor CS1 & 2 Main control panel 01355000 refrigerant circuit control circuits manually CDS 2 Discharge Thermostat Refrigerant temperature Compressor...

  • Page 16: Fantrol

    Size Setpoint Differential Setpoint Differential Setpoint Differential RPS/RDT and RCS units have two independent refrigerant circuits with one to four condenser fans being controlled independently by the ambient air temperature of each circuit. See the following sections for sequence of operation for condenser fans with FanTrol.
  • Page 17 Table 4: R-410A Fan Cycling Setpoints in °F with No Controls Degrees °F Notes RPS, RCS, RDT, RPR Control ID Cut Out Cut In Differential TC12 TC12 Controls 1 Fan TC12 TC12 Controls 1 Fan TC12 TC12 Controls 1 Fan...

  • Page 18: Condenser Fan Arrangement

    nTroduCTIon Condenser Fan Arrangement Table 5 shows the condenser fan numbering conventions and locations for each unit size. Table 5: Condenser Fan Arrangement Unit size Refrigerant circuit Arrangement Unit size Refrigerant circuit Arrangement 015, 016, 025, 026, 020, 021 075, 079, 090, 091 030, 031, 035, 042 100, 101 050, 051...

  • Page 19: Mechanical Installation

    Allow service clearance approximately as indicated in Figure 21. Also, Daikin recommends providing a roof walkway to the rooftop unit as well as along at least the two sides of the unit that provide access to most controls and serviceable components.
  • Page 20 eChanICal nsTallaTIon Ventilation Clearance Below are minimum ventilation clearance recommendations. Do not locate outside air intakes near exhaust vents or other The system designer must consider each application and sources of contaminated air. provide adequate ventilation. If this is not done, the unit will not If the unit is installed where windy conditions are common, perform properly.

  • Page 21: Roof Curb Assembly And Installation

    If building construction allows sound and vibration into the occupied space, locate the unit over a non-critical area. It Assembly of a typical RPS/RDT roof curb is shown in Figure is the responsibility of the system designer to make 24.
  • Page 22 RPS/RDT Assembly instructions (Figure 1. Set curbing parts A through K per dimensions shown 6. Weld curbing in place. Caulk all seams watertight. over roof opening or on a level surface. Note location of Remove backing from 0.25ʺ (6 mm) thick × 1.50ʺ (38 return and supply air openings.
  • Page 23 eChanICal nsTallaTIon Table 6: RPS/RFS Roof Curb Assembly Dimensions Unit size Return Fan in . (mm) in . (mm) 2 × 15ʺ FC 24 (610) 82 (2083) 30ʺ AF 30 (762) 76 (1930) 015 – 042 40ʺ AF 36 (914) 78 (1981) None 24 (610)

  • Page 24: Post And Rail Mounting

    eChanICal nsTallaTIon Post and Rail Mounting Rigging and Handling CAUTION CAUTION The unit must be level side to side and over the entire length. Use all lifting points. Improper lifting can cause severe Equipment damage can result if the unit is not level. personal injury and property damage.
  • Page 25 Z = total base rail length of the units. NOTE: Z excludes hoods and overhung parts extending past base rails of the unit. RDT 045D–140D: B Min. = 72” (1829 mm) A = Z - X - Y RPS 080D–105D: B Min: = 96” (2348 mm) If A <...
  • Page 26 The RPS unit is factory split at the fan section and ships as two pieces, split at the supply fan bulkhead, to recouple together on the roof. Like the RPS/RDT unit factory split at the condenser, this configuration is ordered if shipping length or weight limitation prevents a packaged RPS/RDT from being ordered.
  • Page 27 eChanICal nsTallaTIon Phase II . Reassemble cabinet (Figure 31) 1. Reinstall top cap removed in Phase I, Step 1. 2. Caulk (watertight) ends of splice cap. 3. Caulk (watertight) vertical seam. 4. Install #10 screws (provided). 5. Install screws (0.25–20 × 0.75) removed in Phase I, Step 2 6.
  • Page 28 eChanICal nsTallaTIon Phase III . Reconnect Power and Control Wiring Figure 33: Electrical Connections/Cover Installation CAUTION Connect the power block correctly and maintain proper phasing. Improper installation can cause severe equipment If applicable, install as shown damage. with provided fasteners. The DX coil/condenser section contains power and control After routing wires, harnesses that have their excess length in the blank or heat...
  • Page 29 30.5 Slope the refrigerant lines ½" to 1ʺ per 10 feet of horizontal run * Daikin’s largest suction connection is 2-5/8ʺ and is generally sufficient. in the direction of refrigerant flow to assist oil return. Pressure drops in the refrigerant lines should be maintained †...
  • Page 30 eChanICal nsTallaTIon Piping Connections, RFS/RCS Units Figure 35: Refrigerant Piping Connection Locations Example Table 9: 015D – 140D Connection Sizes and Locations* Piping Dimension (inches) Dimension Component Circuit 015D - 026D 030D - 042D 045D - 068D 070D - 079D 080D - 105D 110D - 140D Liquid line #1/#2...

  • Page 31: Leak Testing

    This should be noted and to approximately 29ʺ (740 mm) of mercury. Then add reported to the Daikin sales representative and freight carrier if enough refrigerant vapor to the system to bring the the loss is due to shipping damage.
  • Page 32 — * DX coil configuration (S = Standard, L = Large) is identified by the 8th digit of the RPS/RDT or RFS model number, found on the unit nameplate. For example, DX = L for unit model number RFSO6ODLY. Above values are for sealed core driers. Add 3.3#/ckt for replaceable core driers.

  • Page 33: Charging The System

    eChanICal nsTallaTIon Table 13: Pressure-Vacuum Equivalents Absolute pressure above zero Vacuum below 1 atmosphere Boiling point of H at each pressure (°F) Microns PSIA Mercury, in . (mm) 29.92 (760.0) — 0.001 29.92 (759.95) 0.002 29.92 (759.9) 0.003 29.92 (759.85) 0.004 29.91 (759.8) 0.006...

  • Page 34: Refrigerant Charge

    Table 12. The 5. MHGRH and liquid subcooling should not be operating exact charge for a one piece RPS/RDT is on the unit nameplate. These units contain a microchannel condenser and the internal volume of the refrigeration system is less than that compared Field Charging Procedure to a typical fin-tube condenser.

  • Page 35: Unit Piping

    The freezing of coils is not the the coil provide drainage to the main drain pan. Check that the responsibility of Daikin. Refer to Winterizing Water Coils on copper tubes are in place and open before the unit is put into page 138.
  • Page 36 eChanICal nsTallaTIon Figure 37: Hot Water Heat Section (Shown with Factory Figure 39: Steam Heat Section (Shown with Factory Valve Valve and Piping) and Piping) Figure 38: Hot Water Valve Package Steam Piping Recommendations 1. Be certain that adequate piping flexibility is provided. Stresses resulting from expansion of closely coupled piping and coil arrangement can cause serious damage.

  • Page 37: Damper Assemblies

    eChanICal nsTallaTIon Damper Assemblies Steam Coil Freeze Conditions If the air entering the steam coil is below 35°F (2°C), note the The optional damper assemblies described in this section following recommendations: normally are ordered with factory-installed actuators and linkages. The following sections describe operation and linkage 1.

  • Page 38: Outside Air

    eChanICal nsTallaTIon Intake Hood Damper (0% to 100% Figure 43: Intake Hood Damper Adjustment outside air) Units requiring 100% outside air are provided with a rain hood and dampers that can be controlled by a single actuator. The actuator provides two-position control for opening the dampers fully during unit operation and closing the dampers during the off cycle.

  • Page 39: Cabinet Weather Protection

    Protect the unit from overhead runoff from overhangs or other difficult. such structures. On bottom-supply/bottom-return units, if a Daikin roof curb Re-caulk field assembled options such as external piping or is not used, installing contractor should make an airtight vestibules per the installation instructions provided with the connection by attaching field fabricated duct collars to the option.
  • Page 40 Static pressu re and reference pressure (LO) taps, or tag the tubes. tubing Daikin recommends 3/16ʺ I.D. plastic tubing. 3. Locate the duct pressure (HI) tap near the end of a long duct to ensure that all terminal box take-offs along the run have adequate static pressure.
  • Page 41 eChanICal nsTallaTIon Installing Building Static Pressure Sensor Taps Lab Pressurization Applications CAUTION Fragile sensor fittings. If you must remove tubing from a 1. Install a “T” fitting with a leak-tight removable cap in each pressure sensor fitting, use care. Do not use excessive force tube near the sensor fitting.

  • Page 42: Electrical Installation

    Field Power Wiring Figure 47: RPS/RDT and RFS Power Wiring Connections Wiring must comply with all applicable codes and ordinances. The warranty is voided if wiring is not in accordance with these specifications. An open fuse, tripped circuit breaker, or Manual Motor Protector (MMP) indicates a short, ground, or overload.
  • Page 43 leCTrICal nsTallaTIon RCS Units Field power wiring is connected from the main control panel in the RFS unit to powerblock (PB4) or an optional disconnect switch (DS4) located in the condenser control panel of the RCS unit. Power leads enter the bottom left corner of the condenser control panel through the conduit hubs shipped with the unit.

  • Page 44: All Units

    Wires should be sized for a maximum of 3% voltage drop. Supply voltage must not vary by more than 10% Table 17: RPS/RFS/RCS/RDT Recommended Power Wiring of nameplate. Phase voltage imbalance must not exceed 2%. (Calculate the average voltage of the three legs. The leg with...

  • Page 45: Field Control Wiring

    Field Control Wiring Figure 51: RDT, RFS, RPS Field Wiring Connections DANGER Electrical shock hazard. Can cause severe injury or death. Connect only low voltage NEC Class II circuits to terminal Main control panel blocks TB2 and TB5. Reinstall and secure all protective deadfront panels when the wiring installation is complete.

  • Page 46: Preparing Unit For Operation

    2. Place additional weight on the fan sled frame and use a lever to slightly compress the spring or raise the sled. Figure 54: RDT Spring Mount Hold Down Fasteners This will allow the bolt to turn freely. 3. Place one or two drops of oil on the threads if needed.
  • Page 47 reParIng nIT for PeraTIon Figure 56: Spring Mount When a seismic restraint is properly adjusted and the fan is operating normally, the neoprene center bumper will be centered within the 2ʺ (51 mm) diameter hole in the restrainer angle, and the restrainer angle will be centered vertically between the flanges of the neoprene center bumper.
  • Page 48 reParIng nIT for PeraTIon Adjusting Scroll Dampers Adjusting Supply Fan Thrust Restraints Two sets of scroll dampers are provided in the housing of Thrust restraints are provided when housed double-width the twin 15ʺ × 6ʺ supply fan to allow control of air volume to fans are mounted on springs.

  • Page 49: Sequences Of Operation

    equenCes of PeraTIon equenCes of PeraTIon The following sequences of operation are for a typical “D” Fan Operation vintage applied rooftop unit equipped with MicroTech III, an When the main control board (MCB) commands the supply and economizer, mechanical cooling, 3 to 1 turn down burner, return fans to start, the unit enters the Startup operating state.

  • Page 50: Economizer Operation

    equenCes of PeraTIon Economizer Operation Cross Circuit Loading Refer to Figure 66. When the outdoor air is suitable for free See line 812, Figure 68. During a call for cooling, if HP1 is cooling, the switch in enthalpy sensor OAE is in position “3” satisfied, then DO1 closes.
  • Page 51 IrIng IagraMs IrIng IagraMs Legend Description Standard location Description Standard location Flame detector Heat section, gas ACT3, 4 Actuator motor, economizer Economizer section Fan limit control Heat section, gas Actuator motor, discharge ACT5 Discharge section FP1, 2 Frost protection, refrig circuits Coil section, cool isolation damper FS1, 2...
  • Page 52 IrIng IagraMs Description Standard location Description Standard location Manual motor protector, REC3 Receptacle, field power, 115V Discharge bulkhead MMP30 Inverter bypass box invrtr bypass, sup fan REC10–23 Receptacle, cabinet sections Cabinet sections Manual motor protector, Switch, system ON/OFF Main control box MMP40 Inverter bypass box invrtr bypass, ret fan...

  • Page 53: General Notes

    IrIng IagraMs General Notes Field wiring Factory wiring Shielded wire/cable Main control box terminals Auxilliary box terminals Field terminals Plug connector Wire/harness number Wire nut/ID www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 54 IrIng IagraMs Figure 60: VAV Fan Power (With SAF and RAF VFDs and Unit Powered Outlet/Light Circuit) IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 55 IrIng IagraMs Figure 60 continued: VAV Fan Power (With SAF and RAF VFDs and Unit Powered Outlet/Light Circuit) www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 56 IrIng IagraMs Figure 61: Constant Volume Fan Power (SAF and RAF) IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 57 IrIng IagraMs Figure 61 continued: Constant Volume Fan Power (SAF and RAF) www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 58 IrIng IagraMs Figure 62: RPS 074 Condensing Unit Power (with Variable Speed Inverter Compressor)* U/L1 V/L2 W/L3 * Related control schematic on page 69 - page 71 IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 59 IrIng IagraMs Figure 63: RPS 075 Condensing Unit Power (With SpeedTrol and Fixed Scroll Compressors) www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 60 IrIng IagraMs Figure 64: VFD Control (SAF and RAF) IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 61 IrIng IagraMs Figure 65: VAV Control Inputs www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 62 IrIng IagraMs Figure 65 continued: VAV Control Inputs IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 63 IrIng IagraMs Figure 66: HTD Gas Burner Schematic www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 64 IrIng IagraMs Figure 66 continued: HTD Gas Burner Schematic IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 65 IrIng IagraMs Figure 67: Electric Heat Control www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 66 IrIng IagraMs Figure 67 continued: Electric Heat Control IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 67 IrIng IagraMs Figure 68: RPS 061 Condensing Unit Control (With Fixed Speed Scroll Compressors) www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 68 IrIng IagraMs Figure 68 continued: RPS 061 Condensing Unit Control (With Fixed Speed Scroll Compressors) IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 69 IrIng IagraMs Figure 69: RPS 074 Condensing Unit Control (with Vaiable Speed Inverter Compressors) www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 70 IrIng IagraMs Figure 69 continued: RPS 074 Condensing Unit Control (with Vaiable Speed Inverter Compressors)* IM 893-10 • ROOFPAK SINGLEZONE UNITS www.DaikinApplied.com...
  • Page 71 IrIng IagraMs Figure 70: RPS 074 Compressor Control (with Variable Speed Inverter Compressor) www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...
  • Page 72 IrIng IagraMs Figure 68 continued: CV Fan Control (SAF and RAF) 115VAC_GF/1 T3_24V T3_COM T1_N jprs 24V SRC 401A SUPPLY FAN SOURCE 9-16 WIRED INTERNAL jprs TO MOTHERBOARD 24V SRC 404A RETURN FAN MMP10 MMP20 426A 426B 426C 11(31) 12(32) 11(31) 12(32) 431A...

  • Page 73: Unit Options

    PTIons PTIons Control Actuators The actuators are controlled by an analog signal from the unit controller. Damper actuators utilize a 0-10 V (dc) analogs ignal while modulating heating/cooling valve actuators utilize a 2-10 V (dc) signal. Spring-return actuators are used for the 0- 30% outdoor air and economizer dampers.
  • Page 74 PTIons Differential Enthalpy Control (OAE/RAE) Ground Fault Protection An optional electric differential enthalpy control arrangement The ground fault protection is designed to protect motors (OAE/RAE) is available on units with MicroTech III control. from destructive arcing ground faults. The system consists of In this configuration a solid-state humidity and temperature a ground fault relay and a ground fault current sensor.

  • Page 75: Modulating Hot Gas Reheat

    PTIons Modulating Hot Gas Reheat In the dehumidification mode, mechanical cooling is used to cool air low enough to lower the moisture content of the air and then reheated to comfort conditions. Figure 74: Dual 2-Way Valve Refrigeration Schematic † †...
  • Page 76 PTIons Dehumidification Initiation • In the Fan Only state, no sensible cooling is required, but the dehumidification mode will still be enabled if the dew An analog sensor is mounted in the return duct, the space, or point or humidity sensor is not satisfied. In this case the outdoors to sense Relative Humidity.
  • Page 77 PTIons Hot-Gas Bypass (HGBP) External Time Clock You can use an external time clock as an alternative to (or in CAUTION addition to) the MicroTech III controller’s internal scheduling Lifting points may not be symmetrical to the center of gravity function.

  • Page 78: Smoke And Fire Protection

    This removes power from binary input B18 on the main control board. Daikin optionally offers factory installed outdoor air, return air, and exhaust air dampers as well as smoke detectors in The Microtech III controller responds by shutting down the the supply and return air openings, complete with wiring and unit.

  • Page 79: Freeze Protection

    PTIons Freeze Protection External Time Clock or Tenant Override An optional freezestat is available on units with MicroTech III There are several methods of switching the rooftop unit control that have hot water, chilled water, or steam heating between occupied and unoccupied operation. It can be done coils.

  • Page 80: Field Output Signals

    PTIons Field Output Signals The following outputs may be available for field connections to VAV Box Output a suitable device. The VAV Box Output (MCB-DO10) supplies 24 V (ac) to terminal 116 on the field terminal block (TB2) when the output VAV Box Signal/Fan Operation Signal is on.
  • Page 81 PTIons Entering Fan Temperature Sensor Variable Frequency Drive Operation The entering fan temperature (EFT) sensor and an associated Refer to the vendor instructions supplied with the unit. “Lo Airflow Problem” alarm are provided on VAV units with Convenience Receptacle/Section Lights MicroTech III control and gas or electric heat.
  • Page 82 Optional Low Ambient Compressor Operation Fixed Speed Scroll Compressors Figure 80: R-410A Speedtrol Daikin’s head pressure control operates in conjunction with AFD11 FanTrol by modulating the motor speed of the last condenser fan of each refrigeration circuit in response to condenser pressure.
  • Page 83 Figure 82: Speedtrol Operating Characteristics (for Variable Speed Inverter Compressor Unit) Compressor Option Daikin’s head pressure control operates by modulating the 60 Hz motor speed of all the condenser fans in each refrigeration circuit in response to the condenser pressure. Each refrigerant...

  • Page 84: Designflow™ Outdoor Air Damper Option

    PTIons DesignFlow™ Outdoor Air Damper Option DesignFlow™ airflow measurement stations are located inside DesignFlow Station Startup the louvered outdoor air intake doors between the intake Before initial startup of the rooftop unit, carry out the following louver and outside air dampers (Figure 84).
  • Page 85 PTIons 9. Locate and install the fulcrum used in the leveling 16. If the value indicated by the LH Lvl Pos= (or RH Lvl procedure as follows (see Figure 85): Pos=) parameter is not within the range of 22 .56% to 23 .02% (22 .79% is ideal), adjust the level of the a.
  • Page 86 PTIons Making Level Adjustments The DesignFlow unit is mounted so that it pivots at the top 10. When the level is correct, unlock and open the louvered when three lock nuts are loosened, two at the top and one at outdoor air intake door on the side of the unit and tighten the bottom of the assembly (see Figure...

  • Page 87: Propeller Exhaust Fan Option

    PTIons Propeller Exhaust Fan Option Economizer units may include propeller exhaust or centrifugal Figure 91: Fan Rotation return fan options. This section covers maintenance and operating instructions for the propeller exhaust option. Centrifugal return fan construction, maintenance and operation is similar to that for supply fans and covered in other sections of this manual.
  • Page 88 PTIons Belts Adjustment #1: Moving the weight stack along the length of the mounting Premature belt failures are frequently caused by improper belt bracket slot (Figure 92) will effect the full open balance of tension (either too tight or too loose) or misaligned pulleys. The the blade assembly.
  • Page 89 PTIons Table 19: Propeller Exhaust Fan Troubleshooting Problem Cause Corrective Action • Check backdraft dampers for proper operation • Remove obstructions in ductwork System resistance is too high. • Clean dirty filters • Check for adequate supply for air exhaust fans or exhaust air for supply fans Reduced Airflow Unit running backwards.

  • Page 90: Ultraviolet Lights Option

    PTIons Ultraviolet Lights Option Bearings Bearings are the most critical moving part of the fan; inspect When this option is employed, ultraviolet C light bathes them at periodic intervals. Check locking collars, set screws, the moist surfaces on the coil and drain pan, killing most and fasteners that attach bearings to the bearing plate for microorganisms that can grow there.
  • Page 91 PTIons Ultraviolet Light Operation Refer to the wiring schematic below. 115 V (ac) power for the The normally open disconnect switches are wired in series in a UV lights is provided by control circuit transformer T1. The circuit that supplies 24 V (ac) to the coil of relay R45. When all lights operate whenever the unit is powered, system switch S1 doors are closed, relay R45 is energized, and its normally open is closed, and all doors with door power disconnect switches...

  • Page 92: Microtech Iii Remote User Interface

    Daikin Rooftop and Self-Contained Systems In addition to the unit-mounted user interface provided with Features MicroTech III controls, Daikin applied rooftop systems and • Can be wired up to 700 meters from units for flexibility in indoor vertical self-contained systems can be equipped with placing each remote user interface within your building.
  • Page 93 PTIons Figure 100: Specifications and Connections www.DaikinApplied.com IM 893-10 • ROOFPAK SINGLEZONE UNITS...

  • Page 94: Vfd Compressor Operation

    VFD compressor is increased to maximum speed at which point it resumes modulating to maintain discharge temperature. Table 20: VFD Compressor Modulation Ranges VFD Modulation Range VFD Max rps RPS/RDT / Unit VFD and Fixed Comp(s) On LoOilBoostRps/ HiOilBoostRps/ VFD Min Rps/ VFD Comp Only...
  • Page 95 PTIons VFD Compressor Control Dehumidification Transition During Cooling State Control of the VFD compressor is accomplished with a digital output enable signal and a 0-10VDC analog modulating When dehumidification operation becomes active while the control signal. unit is in the Cooling operating state, The VFD compressor is ramped to its maximum capacity.
  • Page 96 PTIons Oil Boost Operational Sequence VFD Compressor Protection Unloading Control When a low oil level is indicated in the VFD compressor sump, the unit switches to an oil boost state. The VFD compressor There are several modulating control functions that adjust the speed is increased during this mode to promote the return of speed control range of the VFD compressor to protect it from refrigerant oil to the compressor.
  • Page 97 PTIons High Discharge Line Temperature Unloading High Superheat Control If the VFD compressor discharge superheat rises to 75F for 10 consecutive minutes, the VFD compressor speed is reduced A compressor discharge temperature sensor (Thermistor) is by 10 rps increments down to a 40 rps operating speed. installed on the VFD compressor as standard.
  • Page 98 PTIons Condenser Coil Splitter Solenoid Valve Control VFD Compressor Emergency Stop Control Condenser coil splitting is standard on both circuits of a VFD If the VFD compressor enable output signal has been ON for compressor unit. This feature assists in maintaining head 30 seconds and the controller fails to receive the VFD run pressure during low ambient/low modulating operation.

  • Page 99: Variable Speed Scroll Compressor

    EN378 (or other applicable local safety regulations) requirements must be fulfilled. Daikin units with variable speed inverter compressor are engineered with fixed speed compressor(s) in such a way that the unit delivers only the required energy to satisfy space conditions and provides you with exceptional energy savings.
  • Page 100 PTIons Oil Injection Control Optical Oil Level Sensor The VFD compressor contains an oil injection valve and An optical oil sensor is used to monitor oil level in VFD solenoid (SV11) as standard. The oil injection valve provides compressor sump. The sensor is mounted directly to a fitting lubrication to the scroll set under low speed/low refrigerant on the VFD compressor shell and can be removed without velocity situations.
  • Page 101 PTIons Variable Frequency Drive for VFD Compressor Basic Operation of Compressor Drive: WARNING Start= Connect terminals 12 & 18 for minimum of 5 secs, Never bypass the compressor drive or directly connect the VFD compressor to the main power supply. connect terminals 12 &27 and terminals 13 &37 Stop= Disconnect terminals 12 &...

  • Page 102: Check, Test, And Start

    4. Verify that all electrical connections in the unit control would be one possible, unacceptable consequence. panel and compressor terminal box are tight, and that the If any problems are found, contact the local Daikin proper voltage is connected. representative for instructions.

  • Page 103: Economizer Start-Up

    heCk TarT Economizer Start-up Power Up 1. Close the unit disconnect switch. With the control system CAUTION switch S1 in the OFF position, power should be available Adjust dampers properly. Improper adjustment can damage only to the control circuit transformer (T1) and the the dampers.

  • Page 104: Compressor Startup

    heCk TarT Compressor Startup All three-phase compressors are wired the same internally. CAUTION Therefore, once the correct phasing is determined for a Low ambient temperature hazard. Can cause compressor specific system or installation, connecting properly phased damage. Do not attempt to start up and check out the power leads to the same terminals should maintain proper refrigeration system when the outdoor air temperature is rotational direction.
  • Page 105 heCk TarT Expansion Valve Superheat Adjustment 6. Verify that compressor #1 starts. If the compressor motor hums but does not run, verify that it is getting three- It is very important that the expansion valve superheat setting phase power. be adjusted to be between 8°F (–13°C) and 14°F (–10°C). 7.

  • Page 106: Heating System Startup

    heCk TarT Heating System Startup Air Balancing WARNING General Moving machinery hazard. Can cause severe personalinjury 1. At the keypad, set the heating setpoints high enough so or death. that the controller calls for heating.Adjust the value in Do not use a mechanically driven tachometer to measure the Main Menu View\Set Unit\Heating\Occ Htg Spt = (above speed of return fans on this fan arrangement.

  • Page 107: Drive Belt Alignments

    heCk TarT Drive Belt Alignments Sheave Alignment Drive Belt Adjustment Mounting: General Rules of Tensioning 1. Verify both driving and driven sheaves are in alignment 1. The ideal tension is the lowest tension at which the belt and the shafts are parallel. The center line of the driving will not slip under peak load conditions.
  • Page 108 heCk TarT Mounting and Adjusting Motor Sheaves VM and VP Variable Pitch Sheaves Mounting: Adjusting: 1. Mount all sheaves on the motor shaft with setscrew A 1. Slack off all belt tension by moving the motor toward the toward the motor (see Figure 111).
  • Page 109 heCk TarT LVP Variable Pitch Sheaves Mounting: Adjusting: 1. For single-groove sheaves, slide the sheave onto the 1. Slack off all belt tension by moving the motor toward the motor shaft so that the side of the sheave with setscrew driven shaft until the belts are free from the grooves.
  • Page 110 heCk TarT MVP Variable Pitch Sheaves Adjusting: 1. Slack off belt tension by moving the motor toward the 3. Adjust the sheave to the desired pitch diameter by driven shaft until the belts are free from the grooves. For turning the outer locking ring with a spanner wrench. Any easiest adjustment, remove the belts.

  • Page 111: Final Control Settings

    Main Menu\View\Set Unit\Cooling\Occ Clg Spt & Maintaining Control Parameter Records DAT Clg Spt. Daikin recommends that the MicroTech III controller’s setpoints b. Main Menu\View\Set Unit\Heating\Occ Htg Spt & and parameters be recorded and saved for future reference. If DAT Htg Spt.
  • Page 112 III C ICro onTroller PeraTIon III C ICro onTroller PeraTIon Using the Keypad/Display The keypad/display consists of a 5-line by 22 character display, The keypad/display Information is organized into five main three keys and a “push and roll” navigation wheel. There is an menus or menus groups;...

  • Page 113: Version Information

    10 minutes. It is changeable from 3 to 30 return to the navigation mode. minutes via the Timer Settings menu in the Extended Menus. Figure 116: Password Main Page Daikin AHU Enter Password Continue W/O Password Version Information...
  • Page 114 eyPad IsPlay TruCTure eyPad IsPlay TruCTure The following is a description of the MicroTech III menu structure. These menus and items can all be displayed with the keypad/ display. Menu items displayed will change based on the selected unit configuration. Refer to OM 920 for more details.
  • Page 115 eyPad IsPlay TruCTure Commission Unit Manual Control Service Menus Trending Unit Maintenance ► ► Unit Set-Up Manual Control= Normal CFan Outpt 1= Off Timer Settings Trending Ena= No Operating Hours ► ► Timer Settings Supply Fan= Off CFan Outpt 2= Off Operating Hours Apply Chgs= No ►...
  • Page 116 eyPad IsPlay TruCTure View/Set Unit – Keypad/Display Menu Structure Figure 118 continued: View/Set Unit ► Unit Status/Settings ► Occupancy ► Temperatures ► Flow Status ► SAF Spd Control ► RF/EF Control ► Cooling ► Economizer ► Min OA Damper ► Heating ►...
  • Page 117 eyPad IsPlay TruCTure Cooling Min OA Damper Heating Dehumidification Date/Time/Schedules Economizer Occ Clg Spt= 72.0°F Min OA Pos= XXX% Occ Htg Spt= 68.0°F Dehum Status= ________ OAD/Econo Pos= XXX% Time= hh:mm:ss Unocc Clg Spt= 85.0°F Vent Limit= 20% Unocc Htg Spt= 55.0°F Rel Humidity= XXX% Date= MM/DD/YY DAT Clg Spt= 55.0°F...
  • Page 118 eyPad IsPlay TruCTure Commission Unit – Keypad/Display Menu Structure Figure 118 continued: Commission Unit ► Unit Set-Up ► Timer Settings ► SAF Set-Up ► RF/EF Set-Up ► Htg/Clg ChgOvr Set-Up ► Cooling Set-Up ► INV Cmp Set-Up ► Var Cmp Set-Up ►...

  • Page 119: Keypad/Display Menu Structure

    eyPad IsPlay TruCTure RF/EF Set-Up Htg/Clg ChgOvr Set-Up Cooling Set-Up Clg Stage Time= 5min RF/EF Ctrl= Tracking MinExStrtTm= 120s Ctlr Temp Src= RAT Rem RAF Cap= 5% MinExStopTm= 120s AplyTstatchg= No Clg DB= 2.0°F Clg Period= 20s Rem ExhF Cap= 5% MinExOAPos= 5% Use Tstat Spt= No BSP DB= 0.01in...
  • Page 120 eyPad IsPlay TruCTure Commission Unit – Keypad/Display Menu Structure (continued) Figure 118 continued: Commission Unit ► Unit Set-Up ► Timer Settings ► SAF Set-Up ► RF/EF Set-Up Heating Set-Up ► OA Fan Set-Up Exp Valve Set-Up Htg/Clg ChgOvr Set-Up Htg Stage Time= 5min ►...
  • Page 121 eyPad IsPlay TruCTure Dehum Set-Up Defrost Set-Up Energy Rec Set-Up Head Pressure Set-Up Dehum Method= None Defrost State= _________ Energy Rcvy= Yes Wtr Reg Vlv= XXX% RH DB= 2% Manual DF= No ER Wheel= ___________ Head P Circ 1= XXXPSI Dewpoint DB= 2°F MinCmpOpTm= 10min Wheel Speed= XXX%...
  • Page 122 eyPad IsPlay TruCTure Service Menu – Keypad/Display Menu Structure Figure 118 continued: Service Menus ► Timer Settings ► Operating Hours ► Save/Restore Settings ► Active Alarms ► Alarm Log ► Alarm Configuration ► Analog Input Status ► Universal I/O Status ►...
  • Page 123 eyPad IsPlay TruCTure Alarm Log Alarm Configuration ► Log Count: xx Clr Log= No ALARM LIMITS ► 3, 4 See connection on page 125 +/-Alarm 1: Alarm Type Hi Disch Temp= 170°F ► +/-Alarm 2: Alarm Type Lo Disch Temp= 40°F ●...
  • Page 124 eyPad IsPlay TruCTure Service Menu – Keypad/Display Menu Structure Figure 118 continued: (continued) Service Menus ► Timer Settings ► Operating Hours ► Save/Restore Settings ► Active Alarms ► Alarm Log ► Alarm Configuration ► Analog Input Status ► Universal I/O Status ►...
  • Page 125 eyPad IsPlay TruCTure Alarm Lists Active Alarms Alarm Log Alarm Details ► ► Active Alarms Alm Count: xx Clr Alms= No Log Count: xx Clr Log= No +/-Alarm 1: Alarm Type ► ► ► +Alarm 1: Alarm Type +/-Alarm 1: Alarm Type Alarm Log MM/DD/YYYY HH:MM:SS ►...
  • Page 126 eyPad IsPlay TruCTure BMS Communications – Keypad/Display Menu Structure Figure 118 continued: BMS Communications ► LON Set-Up ► BACnet MSTP Set-Up ► BACnet IP Set-Up ► D-Net Set-Up ► Network Unit Set-Up IM 918 IM 917 IM 916 LON Set-Up BACnet MSTP Set-Up BACnet IP Set-Up D-Net Set-Up...

  • Page 127: Maintenance

    aInTenanCe aInTenanCe Planned Maintenance WARNING Installation and maintenance must be performed only by Preventive maintenance is the best way to avoid unnecessary qualified personnel who are experienced with this type of expense and inconvenience. Have this system inspected at equipment and familiar with local codes and regulations. regular intervals by a qualified service technician.

  • Page 128: Unit Storage

    Cabinet Sections Once a month, open a door on each section and verify that no The Daikin Rooftop Packaged System Unit is an outdoor moisture or debris is accumulating in the unit. unit. However, the schedule may dictate storage either on the ground or in its final position at the site.

  • Page 129: Fan Shaft Bearings

    Table 20. For any applications that motor is warm, but not running. Use one of the greases shown are not in the ranges of the table, contact Daikin. Table CAUTION 1.
  • Page 130 aInTenanCe Bearing Replacement Table 25: Recommended Lubricants for Fan Shaft Ball Bearings The following instructions must be read in entirety before attempting installation or removal. The procedures indicated Name Temperature Base Thickener NLGI grade should be carefully followed. Failure to do so can result in Texaco, 30°...
  • Page 131 aInTenanCe Propeller Exhaust Fan Periodic Service and Maintenance Propeller Exhaust Fan Option on page 1. Check all moving parts for wear every six months. Vibration Levels 2. Check bearing collar, sheave, and wheel hub setscrews, Each unit as shipped is trim balanced to operate smoothly. To sheave capscrews, and bearing hold-down bolts for provide satisfactory operation after shipping and installation, tightness every six months.
  • Page 132 aInTenanCe Figure 119: Return Fan Assembly Figure 120: 20ʺ DWDI Airfoil Wheel-to-Funnel Figure 121: 24ʺ DWDI Backward Curved Wheel-to-Funnel Wheels .18" .18" Funnel 9.31" 9.31" Supply Fan Wheel-to-Funnel Alignment If the unit is equipped with an airfoil or backward curved supply fan, the fan wheel-to-funnel alignment must be as shown in Figure 120,...
  • Page 133 aInTenanCe Figure 122: 27ʺ to 40ʺ DWDI Airfoil Wheel-to-Funnel Figure 123: 44ʺ and 49ʺ SWSI Airfoil Wheel-to-Funnel Table 31: 27ʺ to 40ʺ DWDI Airfoil Wheel-to-Funnel Relationship Wheel-to-funnel relationship (in inches) Wheel diameter (inches) A +0 .3/ — 0 .0 Table 32: 44ʺ and 49ʺ SWSI Airfoil Wheel-to-Funnel 9.9 (246 mm) Relationship 10.6 (269 mm)

  • Page 134: Scroll Compressor Piping

    aInTenanCe Scroll Compressor Piping Figure 126: Oil Equalization Line with Rota-Lock Fittings CAUTION The compressor must be handled with caution in the vertical position with a maximum offset from vertical of 15°. The compressor is delivered under a nitrogen gas pressure (between 0.3 and 0.7 bars) and cannot be connected as is;...
  • Page 135 4. Braze couplings on the cut end of the original tubes so efficiency heat transfer from the refrigerant to the airstream. that they fit snugly into place. In the unlikely occurence of a coil leak, contact Daikin to 5. Replace the TPTL oil equalization line. receive a replacement coil module.

  • Page 136: Refrigerant Charge

    The unit nameplate references proper charge for each RPS/ The following cleaning procedures are recommended as part RDT refrigerant circuit in case a full charge must be added of the routine maintenance activities for Option E Coated Coils. to the unit. Verify these values using...
  • Page 137 aInTenanCe Recommended Coil Cleaner CHLOR*RID DTS™ should be used to remove soluble salts CAUTION from the Option E Coated Coil, but the directions must be Harsh Chemical and Acid Cleaners followed closely. This product is not intended for use as a Harsh chemicals, household bleach or acid cleaners should degreaser.
  • Page 138 Compressors are compatible with the manufacturer’s VFD only. • Fill each coil independently with an antifreeze solution using a small circulating pump and again thoroughly The Daikin Rooftop unit includes the following refrigerant drain. sensors or switches. • Check freezing point of antifreeze before proceeding to next coil.

  • Page 139: Control Panel Components

    aInTenanCe Control Panel Components The following motor control protection is provided. Other MMP Features: • Three-position rotary operator: OFF (O)-TRIP-ON (I) Table 35: RoofPak Individual Motor Control and Protection (Figure 132). • Lockout—tagoutable rotary operator: turn the rotary Motor Type Short Circuit Overload On-Off...

  • Page 140: Circuit Breaker

    aInTenanCe Thermal Overload Relay Circuit Breaker Designed to provide current-dependent protection for loads Circuit breakers are installed upstream of all VFDs to provide with normal starting against impermissibility high temperature short circuit protection. These breakers are not adjustable. rises due to overload, phase asymmetry or phase failure. To reset a tripped circuit breaker: Clear the trip by rotating the Increase in motor current beyond set point as a result to lever down to the OFF position (see...

  • Page 141: Other Features

    aInTenanCe Field Wiring Terminals Phase Voltage Monitor (PVM) All field wiring terminals are spring clamp type, which offer The phase voltage monitor (Figure 129)is designed to several advantages over traditional screw-type terminals: protect three-phase loads from damaging power conditions. A microprocessor-based voltage and phase sensing circuit •...
  • Page 142 aInTenanCe Through-the-door Disconnect Figure 137: Through-the-door Handle Disconnect DANGER Hazardous voltage. May cause severe injury or death. Disconnect electric power before servicing equipment. More than one disconnect may be required to de-energize the unit. CAUTION Molded case switches do not provide over-current protection. This device may automatically open the circuit at levels above the ampere rating of the switch.
  • Page 143 aInTenanCe Controlled Shut-down/Interlock Bypass If a second sensor (SPS2) is installed, make sure the 2nd DSP Sensor= parameter in the Unit Configuration menu of the To access the control panel while power is active, for keypad/display is set to “Yes.” troubleshooting or performing a controlled shut-down, the Check the 24 V (dc) power supply to the sensor, verify that through-the-door disconnect’s interlock feature can be...

  • Page 144: Replacement Parts List

    Component Designation Description Daikin Part Number Main Controller—must be programmed (unit GO# required) 193407301 Connector, Extension I/O Direct Connect 193409701 Terminal Block, MCB–2 Pole 193410302 Terminal Block, MCB–3 Pole 193410303 Terminal Block, MCB–5 Pole 193410305 Terminal Block, MCB–6 Pole 193410306 Terminal Block, MCB–7 Pole...

  • Page 145: Service And Warranty Procedure

    1. Contact the Daikin Parts Department for compressor Units can be obtained from the following two sources: availability. • Daikin Service Parts maintains a stock of replacement 2. Send a completed parts order form to the Daikin Parts compressors. Department. • Copeland Refrigeration has stocking wholesalers throughout the U.S.
  • Page 146 In-Warranty Return Material Procedure On Daikin equipment that includes the extended 2nd -5th year compressor warranty option, the replacement compressor must Material other than compressors may not be returned except be ordered through the Daikin Parts Department (Minneapolis).

  • Page 147: Limited Product Warranty

    For additional consideration, Company will provide an AND SCREW COMPRESSOR PRODUCTS IS MANDATORY extended warranty(ies) on certain products or components and must be performed by Daikin Service or a Company thereof. The terms of the extended warranty(ies) are shown on authorized service representative.

  • Page 148: Rooftop Equipment Warranty Registration Form

    Rooftop Equipment Warranty Regist . Form To comply with the terms of Daikin Warranty, complete and return this form within 10 days to Daikin, Warranty Department Check, test, and start procedure for RoofPak roof mounted air conditioners with or without heat recovery and roof mounted air handlers .
  • Page 149 H. Operate electric heat with fans off. Electric heat must cycle OFF on high limit control......Yes Daikin IM 893-4 www.DaikinApplied.com...
  • Page 150 Startup date:____________________________________ RETURN COMPLETED FORM TO: Daikin Warranty Department, 13600 Industrial Park Boulevard, Minneapolis, MN 55441 Please list any additional comments that could affect the operation of this unit; e.g., shipping damage, failed components, adverse installation applications, etc., on a separate sheet and attach to this form.

  • Page 151: Quality Assurance Survey Report

    Poor 10. How would you rate the overall quality of the product? Excellent Good Fair Poor 11. How does the quality of Daikin products rank in relation to competitive products? Excellent Good Fair Poor Comments: Please list any additional comments which could affect the operation of this unit; i.e., shipping damage, failed components, adverse installation applications, etc.
  • Page 152 Daikin Applied Training and Development Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For training information on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

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