Daikin RDT Manual

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

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Table of ConTenTs
Table of ConTenTs
Introduction .................................3
Unit Nameplate ............................3
Compressor Nameplate .....................3
Gas Burner Nameplate ......................3
Hazard Identication Information ..............3
Unit Description ............................4
Refrigeration Piping ........................6
Control Locations ..........................7
Control Panel .............................8
Controls, Settings and Functions ..............15
FanTrol .................................16
Condenser Fan Arrangement ................18
Mechanical Installation .......................19
Receiving Inspection .......................19
Unit Clearances ...........................19
Roof Curb Assembly and Installation ..........21
Post and Rail Mounting .....................24
Rigging and Handling.......................24
Charging the System ......................33
Unit Piping ...............................35
Damper Assemblies .......................37
Cabinet Weather Protection .................39
Installing Ductwork ........................39
Electrical Installation .........................42
Field Power Wiring ........................42
Preparing Unit for Operation ..................46
Preparing Unit for Operation .................46
Sequences of Operation ......................49
MicroTech III Controller Operation ..............51
Using the Keypad/Display ...................51
Wiring Diagrams ............................53
Unit Options ................................75
Control Actuators ..........................75
Modulating Hot Gas Reheat .................77
Smoke and Fire Protection ..................80
Field Output Signals .......................82
DesignFlow™ Outdoor Air Damper Option ......86
Propeller Exhaust Fan Option ................89
Ultraviolet Lights Option ....................92
MicroTech III Remote User Interface ..........94
VFD Compressor Operation .................96
Variable Speed Scroll Compressor ...........101
Check, Test, and Start .......................104
Economizer Start-up ......................105
Compressor Startup ......................106
Heating System Startup ...................108
Air Balancing ............................108
Drive Belt Alignments......................109
Final Control Settings .......................113
Keypad/Display Menu Structure ...............114
Maintenance ...............................127
Servicing Control Panel Components .........127
Planned Maintenance .....................127
Unit Storage ............................128
Scroll Compressor Piping ..................134
Refrigerant Charge .......................136
Control Panel Components .................139
Replacement Parts List ......................144
Service and Warranty Procedure ..............145
Limited Product Warranty ....................147
Rooftop Equipment Warranty Registration Form . 148
Quality Assurance Survey Report .............151

InTroduCTIon
www.DaikinApplied.com 3 IM 893-10 • ROOFPAK SINGLEZONE UNITS
InTroduCTIon
This manual provides general information about the “D” vintage
Daikin RoofPak applied rooftop unit, models RPS, RDT, RFS
and RCS. In addition to an overall description of the unit, it
includes mechanical and electrical installation procedures,
commissioning procedures, sequence of operation information,
and maintenance instructions. For further information on the
optional forced draft gas-red furnace, refer to IM 684 or
IM 685.
The MicroTech III applied rooftop unit controller is available
on “D” vintage applied rooftop units. For a detailed description
of the MicroTech III components, input/output congurations,
eld wiring and information on using and programming the
MicroTech III unit controller, refer to OM 920.
For a description of operation and information on using
the keypad to view data and set parameters, refer to the
appropriate program-specic operation manual (see Figure 1).
Table 1: Program Specic Rooftop Unit Literature
Rooftop unit control conguration Operation manual number
VFDs
Daikin 208 -460 V OM 844
Daikin 575 V OM 895
Non-Daikin See vendor manuals
Unit Nameplate
The unit nameplate is located on the outside lower right
corner on the main control box door. It includes the unit
model number, serial number, unit part number, electrical
characteristics, and refrigerant charge.
Compressor Nameplate
On units that utilize the tandem compressor design, each
compressor includes an individual nameplate along with a
nameplate identifying the tandem compressors.
On units that utilize the trio compressor design, each
compressor includes an individual nameplate. There is no
nameplate identifying the trio compressors.
Gas Burner Nameplate
On units that include gas heat, the nameplate is located on the
lower right corner on the main control box door. It includes the
burner model number, minimum/maximum input, maximum
temperature rise, and minimum CFM.
Hazard Identication Information
DANGER
Dangers indicate a hazardous situation which will result in
death or serious injury if not avoided.
WARNING
Warnings indicate potentially hazardous situations, which can
result in property damage, severe personal injury, or death if
not avoided.
CAUTION
Cautions indicate potentially hazardous situations, which can
result in personal injury or equipment damage if not avoided
Figure 1: Nomenclature
RCS / R DT / RFS / R P S 070 D L A S 5
RoofPak
Unit conguration
DT = Draw-through
P = Heating, mechanical cooling
F = Heating, future mechanical cooling
C = Condensing section only
Singlezone unit
Nominal capacity (tons)
Design vintage
DX coil
L = Large face area
S = Standard face area
DX coil
4 = 12 fpi, 4-row or 10 fpi, 5-row
5 = 12 fpi, 5-row or 10 fpi, 6 row
6 = 12 fpi, 6 row
Y = Other
VFD
S = SAF VFD
Y = No VFD
V = SAF & Compressor VFD
Heating medium
A = Natural gas
E = Electric
S = Steam
W = Hot water
Y = None (cooling only)

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InTroduCTIon
Unit Description
Typical Component Locations
Figure 2 shows an RPS/RDT/RFS/RCS unit. Figure 3 shows
a typical RPS unit with the locations of the major components.
Figure 4 shows a typical RDT unit with the locations of the
major components. These gures are for general information
only. See the project’s certied submittals for actual specic
dimensions and locations.
Figure 2: RPS/RDT/RFS/RCS Unit
Figure 3: Typical Component Locations—RPS Units
RPS/RDT
1.5" NPT Drain
Condenser
control panel
(RCS only)

InTroduCTIon
www.DaikinApplied.com 5 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Figure 4: Component Locations—RDT Units
1.5 NPT drain

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InTroduCTIon
Refrigeration Piping
This section presents the unit refrigeration piping diagrams for
the various available congurations.
Figure 5: Circuit Schematic
Figure 6: Condenser Piping, Scroll Compressors, 2 to 3 Compressors per Circuit are Provided (6 Compressors* Shown)
B
A
J
D
LK
N
M
H F I
E
P
P
O
A Compressor (1, 2, or 3 per circuit) †
B Discharge line †
C Condenser coil †
D Evaporator coil *
E Manual charging/evacuation valve †
F Filter-drier †
H Sightglass †
I Liquid line *†
J Suction line *†
K Thermal expansion valve *
L Distributor *
M Drop solenoid valve *
N Hot gas bypass valves (optional) *
O Hot Gas bypass piping (optional) *†
P Manual shutoff valve (optional)
Q Condenser Coil Splitter Solenoid Valve**
*Supplied on RFS units
**Variable Speed Inverter Compressor Unit Only
†Supplied on RCS units
Q
C
* Unit with Fixed-Speed Compressors shown

InTroduCTIon
www.DaikinApplied.com 7 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Control Locations
Figure 7 (RPS Units) and Figure 8 (RDT Units) Additional
information is included in Table 2 on page 15 and show the
locations of the various control components mounted the wiring
diagram legend, which is included in wiring throughout the unit.
See Control Panel on page 8 for the Wiring Diagrams on
page 51. locations of control components mounted in control
panels.
Figure 7: Control Locations—RPS units
Figure 8: Control Locations—RDT Units
Return air
economizer
Filter
se ction
Supply
fan
Heat
DX
se ction
Discharge
plenum
se ction
Condensor
se ction
RAT
LT11
(optional)
S11,
REC11
OAE
ACT3 PC5
S10, R EC10
LT10
HL22
EFT
SD1
VM1
DAT ACT5 (optional)
HTR1-2, HTR3-4 (optional
)
(optional)
(optional)
(optional)
(optional)
(optional)
se ction
se ction
FS1
(optional)
C19
OAT
ACT6 (optional)
RAE(optional)
SD2
(
optional)
PC7
C11, 12
(optional)
SC11, 12
(optional)
Comp*
VFD
OOE*
SV11*
SV9, SV10*
* Only for VFD Compressor Units
Economizer
Filter
DX
Heat
section
Supply fan
discharge
plenum
section
Condenser
C19, 20
RAT
LT11 (optional)
S11, REC11
SD2
RAE
ACT3
PC5
OAE
VM1
LT10 (optional)
DAT
OAT
SC11, 21
(optional)
C11, 21
(optional)
(optional)
HTR3-4 (optional)
section
section
section
return air
(optional)
(optional)
(optional)
(optional)
C9
FS1
(optional)
HTR1-2, U1/U2
S10, REC10 (optional)
SD1 (optional)
ACT6
Comp*
VFD
OOE*
SV11*
SV9, SV10*
* Only for VFD Compressor Units

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InTroduCTIon
Control Panel
The unit control panels and their locations are shown in the
from these gures depending on the particular unit options.
following gures. These gures show a typical unit See Wiring
Diagrams on page 51 for the legend and conguration.
Specic unit congurations may differ slightly component
description.
Figure 9: Control Panel Locations
P
rop exhaust/ return fan Comp*
VFD
OOE*
SV11*
* Located on the opposite side of the RPS Condensing Unit Control Panel

InTroduCTIon
www.DaikinApplied.com 9 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Figure 10: Typical Main Control Panel, 045D to 075D, 460 Volt

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InTroduCTIon
Figure 11: Typical Main Control Panel, 080D to 140D, 460 Volt

InTroduCTIon
www.DaikinApplied.com 11 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Figure 12: Typical Gas Heat Panel, 1000 MBh (High TD) Figure 13: Typical Prop Exhaust Panel, 3 Fans, 460 Volt
Figure 14: VFD Bypass Panel, 40 HP, 460 Volt
S3
FSG
FSG Time
LS1
LS2
AS
IT
TD10 R22
R20 R23 R21
TB11
AFD20 GND
M51 M52 M53

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InTroduCTIon
Figure 15: RCS Control Panel with MicroTech III, RPS 045D to 079D
Figure 16: RCS Control Panel with MicroTech III, RPS 080D to 140D

InTroduCTIon
www.DaikinApplied.com 13 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Figure 17: Electric Heat Panel, Sizes 045D to 79D
Figure 18: VFD Compressor Panel, SIzes 016D–074D
Figure 19: Electric Heat Panel, Sizes 080D to 140D
GLG3
DS3
M41M43
FB41FB42FB43 H53
TB11
M31M32M33
FB31FB32FB33
M42
Fan
(M4)
Fan
(M3)
LCP
(Local
Control
Panel)
VFD 2
TB14
R38
R40
GLG3
DS3
M41M42M43
FB41FB42FB43 H53
TB11
M34M44
M31M32M33
FB31FB32FB33
FB34FB44

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InTroduCTIon
Figure 20: Harness Plug Connector Detail
LT OP1 LT OP2
LT11LT10
COMP6COMP5
COMP3 COMP4
COMP1 COMP2
DFRH DFLH OPEN4
SD1 SD2
GSHT1 GSHT2
HL22 OPEN3
OAE PC7PC5
ACT3 OPEN2
SV12 SV56
AFD10 AFD20
FP1 OPEN1EPTS
RATS OATSDATS

InTroduCTIon
www.DaikinApplied.com 15 IM 893-10 • ROOFPAK SINGLEZONE UNITS
Controls, Settings and Functions
Table 2: Controls, Settings, and Functions
Symbol Description Function Reset Location Setting Range Differential Part No.
CS1 & 2 Switch (toggle),
refrigerant circuit
Shuts off compressor
control circuits manually N/A Main control panel N/A N/A N/A 01355000
CDS 2 Discharge Thermostat Refrigerant temperature N/A Compressor N/A N/A N/A 910150290
DAT Discharge air
temperature sensor
Senses discharge air
temperature N/A Discharge air section N/A N/A N/A 060004705
DHL Duct high limit switch
Prevents excessive VAV
duct pressures; shuts fan
OFF
Auto Main control panel 3.5ʺ w.c
(871.8 Pa)
0.05–5.0ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa), xed 065493801
EFT Entering fan air
temperature sensor
Senses entering fan air
temperature N/A Inlet of supply fan N/A N/A N/A 060004705
FP1, 2 Frost protection Senses DX coil temperature
for frost protection Auto DX coil 30° +/-6° open 45° +/- 6° close N/A 15° 113073401
FS1 Freezestat
Shuts fans OFF, opens
heating valve, and closes
outdoor damper if low
air temperature at coil is
detected
Auto Heating section 38°F (3°C)
or as required
35°F–45°F
(2°C–7°C)
12°F
(7°C), xed 065830001
HP1, 2 High pressure control
Stops compressor when
refrigerant discharge
pressure is too high
Manual
(relay
latched)
Condenser panel See page 115 N/A 150 psi 403585001
LP1, 2 Low pressure control Stops compressor when
suction pressure is too low Auto Condenser panel See page 115 N/A
50 psi low ambient
option/
70 psi standard
910139364
MCB Main control board Processes input information N/A Main control box N/A N/A N/A 060006101
MF3, 4 Cooling fan Ventilate VFD box N/A VFD box N/A N/A N/A 910147046
MP1–6 Compressor motor
protector
Senses motor winding
temperature, shuts
compressor OFF on high
temperature
Auto at 3400
ohms
Compressor
junction box 9 K–18 K ohms 700 ohms cold N/A 044691509
OAE
Enthalpy control
(electromechanical)
Returns outside air dampers
to minimum position when
enthalpy is too high
Auto Economizer
section “B” or as required A–D
Temperature: 3.5°F
(2°C) Humidity: 5%
xed
030706702
Enthalpy control
(electronic)
Returns outside air dampers
to minimum position when
outside air enthalpy is
higher than return air
enthalpy (use RAE)
Auto
Economizer section
Fully CW past “D”
(when used with
RAE)
A–D N/A N/A 049262201
OAT Outside air
temperature sensor
Senses outside air
temperature N/A N/A N/A N/A N/A 060004705
OOS Optical Oil Sensor Sense oil level N/A Compressor sump N/A N/A N/A 910150291
PC5 Dirty lter switch Senses lter pressure drop Auto First lter section As required 0.05-5ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa) 065493801
PC6 Dirty lter switch Senses lter pressure drop Auto Final lter section As required 0.05-5ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa) 065493801
PC7 Airow proving switch Senses supply fan pressure
to prove airow Auto Supply fan section 0.10ʺ w.c. (25 Pa)
0.05-5ʺ w.c.
(12.5–1245.4 Pa)
0.05ʺ w.c.
(12.5 Pa), xed 060015801
PT1, 2 Pressure transducer Sense high side pressure N/A Condenser panel N/A 0–700 psig N/A 910153045
RAE Return air enthalpy
sensor
Used to compare return
air enthalpy to outside air
enthalpy (used with OAE)
N/A Economizer section N/A N/A N/A 049262202
RAT Return air temperature
sensor
Senses return air
temperature N/A Return air section N/A N/A N/A 060004705
SD1 Smoke detector,
supply air
Initiates unit shutdown if
smoke is detected Manual Discharge air section N/A N/A N/A 04925001
SD2 Smoke detector,
return air
Initiates unit shutdown if
smoke is detected Manual Return air section N/A N/A N/A 04925001
SPS1 Static pressure sensor
duct #1
Converts static pressure
signals to voltage signals N/A Main control box N/A 0–5ʺ w.c. (0–1245.4 Pa) 1–6 V (dc) out N/A 049545007
SPS2
Static pressure sensor
duct #2
Converts static pressure
signals to voltage signals N/A Main control bo N/A 0–5ʺ w.c. (0–1245.4 Pa) 1–6 V (dc) out N/A 049545007
Static pressure sensor:
building (space)
pressure
Converts static pressure
signals to voltage signals N/A Main control box N/A
-025–0.25ʺ w.c.
(-62.3–62.3 Pa)
1–5 V (dc) out
N/A 049545006
S1 System switch
Shuts off entire control
circuit (except crankcase
heaters)
N/A Main control box N/A N/A N/A 001355000
S7 ON-OFF-AUTO switch Used to manually switch unit N/A Main control box N/A N/A N/A —
SV1-2 Drop solenoid Shuts liquid line when
compressor is OFF N/A Discharge air section N/A N/A N/A 049266502
SV9, 10 Splitter solenoid valve Control refrigerant ow N/A Condenser Normally open Open at 350 psig
Close at 250 psig N/A —
SV11 OIV injection solenoid Direct oil in compressor N/A Compressor Normally closed N/A Activated above
50 rps 910150289

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InTroduCTIon
FanTrol
The FanTrol, provided on all units, is a method of head
pressure control that automatically cycles the condenser fans
in response to ambient air temperature. This feature maintains
head pressure and allows the unit to run at low ambient air
temperatures.
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.
FanTrol does not apply to units with VFD compressors.
Table 3: R-410A FanTrol Setpoints in °F with
MicroTech III Controls.
Unit
Size
Degrees Farenheit
D07a D08b PC13/PC23c
Setpoint Differential Setpoint Differential Setpoint Differential
015 70 5
016 75 5
020 70 5
021 75 5
025 60 5
026 70 5
030 75 5
031 75 5
035 70 5
040 65 5
042 65 5
045 65 5
050 65 5
051 70 5
061 60 5
063 70 5
068 70 5
070 75 5 90 35
071 75 5 90 35
075 65 5 85 5 90 35
079 65 5 80 5 90 35
080 75 5 90 35
081 75 5 90 35
085 70 5 90 35
090 60 5 85 5 90 35
091 60 5 85 5 90 35
100 60 5 85 5 90 35
101 60 5 85 5 90 35
105 50 5 80 5 90 35
110 65 5 90 5 90 35
120 65 5 85 5 90 35
125 65 5 85 5 90 35
130 60 5 85 5 90 35
140 55 5 80 5 90 35
a. D07 = TC12
b. D08 = TC14
c. PC13/23 Cut in = 450 psig (125 degree sat.), xed
Cut out = 275 psig (90 degree sat.), xed

InTroduCTIon
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Table 4: R-410A Fan Cycling Setpoints in °F with No Controls
RPS, RCS, RDT, RPR Control ID Degrees °F Notes
Cut Out Cut In Differential
015 TC12 65 70 5 TC12 Controls 1 Fan
016 TC12 70 75 5 TC12 Controls 1 Fan
020 TC12 65 70 5 TC12 Controls 1 Fan
021 TC12 70 75 5 TC12 Controls 1 Fan
025 TC12 55 60 5 TC12 Controls 1 Fan
026 TC12 65 70 5 TC12 Controls 1 Fan
030 TC12 70 75 5 TC12 Controls 1 Fan
031 TC12 70 75 5 TC12 Controls 1 Fan
035 TC12 65 70 5 TC12 Controls 1 Fan
040 TC12 60 65 5 TC12 Controls 1 Fan
042 TC12 60 65 5 TC12 Controls 1 Fan
045 TC12 60 65 5 TC12 Controls 1 Fan
050 TC12 60 65 5 TC12 Controls 1 Fan
051 TC12 65 70 5 TC12 Controls 1 Fan
061 TC12 55 60 5 TC12 Controls 1 Fan
063 TC12 65 70 5 TC12 Controls 1 Fan
068 TC12 65 70 5 TC12 Controls 1 Fan
070 TC12 65 70 5 TC12 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
071 TC12 65 70 5 TC12 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
075
TC12 60 65 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
079
TC12 65 65 5 TC12 Controls 1 Fan
TC14 75 80 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
080 TC12 70 75 5 TC12 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
081 TC12 70 75 5 TC12 Controls 1 Fan
PC13/PC23 90 12 35 PC13/PC23 Controls 1 Fan*
085 TC12 65 70 5 TC12 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
090
TC12 55 60 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
091
TC12 55 60 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
100
TC12 55 60 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
101
TC12 55 60 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 3 PC13/PC23 Controls 1 Fan*
105
TC12 45 50 5 TC12 Controls 1 Fan
TC14 75 80 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
110
TC12 60 65 5 TC12 Controls 1 Fan
TC14 85 90 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
120
TC12 60 65 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fans
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
125
TC12 60 65 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
130
TC12 55 60 5 TC12 Controls 1 Fan
TC14 80 85 5 TC14 Controls 1 Fan
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
140
TC12 50 55 5 TC12 Controls 1 Fan
TC14 75 80 5 TC14 Controls 2 Fans
PC13/PC23 90 125 35 PC13/PC23 Controls 1 Fan*
* PC13/23Cut in = 450 psig (125 degree sat.), Fixedcut out = 275 psig (90 degree sat.), Fixed

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InTroduCTIon
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
1
2074
1
2
030, 031, 035, 042
1
2
075, 079, 090, 091
1
2
045
1
2
100, 101
1
2
050, 051
1
2
110
1
2
061, 063, 068
1
2
120
1
2
070, 071, 080, 081
1
2
125
1
2
130, 140
1
2

MeChanICal InsTallaTIon
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MeChanICal InsTallaTIon
The installation of this equipment shall be in accordance
with the regulations of authorities having jurisdiction and all
applicable codes. It is the responsibility of the installer to
determine and follow the applicable codes.
NOTE: Low head pressure may lead to poor, erratic refrigerant
feed control at the thermostatic expansion valve. The
units have automatic control of the condenser fans
which should provide adequate head pressure control
down to 50°F (10°C) provided the unit is not exposed to
windy conditions. The system designer is responsible
for assuring the condensing section is not exposed to
excessive wind or air recirculation.
CAUTION
Sharp edges on sheet metal and fasteners can cause
personal injury.
This equipment must be installed, operated, and serviced
only by an experienced installation company and fully trained
personnel.
Receiving Inspection
When the equipment is received, all items should be carefully
checked against the bill of lading to be sure all crates and
cartons have been received. If the unit has become dirty
during shipment (winter road chemicals are of particular
concern), clean it when received.
All units should be carefully inspected for damage when
received. Report all shipping damage to the carrier and le a
claim. In most cases, equipment is shipped F.O.B. factory and
claims for freight damage should be led by the consignee.
Before unloading the unit, check the unit nameplate to make
sure the voltage complies with the power supply available.
Unit Clearances
Service Clearance
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.
Figure 21: Service Clearances
*Condenser coil replacement is simplified
if the following temporary access clearance
can be arranged:
015D - 025D 61"
030D - 062D 83"
070D - 100D 106"
110D - 140D 38"
*

IM 893-10 • ROOFPAK SINGLEZONE UNITS 20 www.DaikinApplied.com
MeChanICal InsTallaTIon
Ventilation Clearance
Below are minimum ventilation clearance recommendations.
The system designer must consider each application and
provide adequate ventilation. If this is not done, the unit will not
perform properly.
Unit(s) surrounded by a screen or a fence:
1. The bottom of the screen or fence should be at least 1 ft.
(305 mm) above the roof surface.
2. The distance between the unit and a screen or fence
should be as described in Service Clearance on page
19. See also Figure 21.
3. The distance between any two units within a screen or
fence should be at least 120ʺ (3048 mm).
Unit(s) surrounded by solid walls:
1. If there are walls on one or two adjacent sides of the unit,
the walls may be any height. If there are walls on more
than two adjacent sides of the unit, the walls should not
be higher than the unit.
2. The distance between the unit and the wall should be at
least 96ʺ (2438 mm) on all sides of the unit.
3. The distance between any two units within the walls
should be at least 120ʺ (3048 mm).
Do not locate outside air intakes near exhaust vents or other
sources of contaminated air.
If the unit is installed where windy conditions are common,
install wind screens around the unit, maintaining the
clearances specied (see Figure 21). This is particularly
important to prevent blowing snow from entering outside air
intake and to maintain adequate head pressure control when
mechanical cooling is required at low outdoor air temperatures.
For pad-mounted units, it is recommended that the condenser
section be lifted a minimum of 12ʺ off the ground for proper
underside ventilation. This clearance allows for proper airow,
optimal condenser performance and to prevent any minor
reductions in performance.
Overhead Clearance
1. Unit(s) surrounded by screens or solid walls must have
no overhead obstructions over any part of the unit.
2. The area above the condenser must be unobstructed in
all installations to allow vertical air discharge.
3. The following restrictions must be observed for overhead
obstructions above the air handler section (see Figure
22):
a. There must be no overhead obstructions above the
furnace ue, or within 9ʺ (229 mm) of the ue box.
b. Overhead obstructions must be no less than 96ʺ
(2438 mm) above the top of the unit.
c. There must be no overhead obstructions in the
areas above the outside air and exhaust dampers
that are farther than 24ʺ (610 mm) from the side of
the unit.
Figure 22: Overhead Clearance
24" (610 mm)
maximum
96" (2438 mm)
minimum,
top of unit to
permanent
overhead
obstruction
24" (610 mm)
maximum
Overhead
canopy
9" (229 mm)
minimum to flue
box,
typical all sides
Flue box