Mitsubishi Electric PURY-P264 Installation manual

Manufactured For MITSUBISHI ELECTRIC US, INC.
INSTALLATION MANUAL
December 2013
LAHK-1, LAHK-2 Low ambient hoods
SWDK-1, RWDK-1 and RWDK-2 Wind deflectors
For use with CITY MULTI® PUHY-P-T/Y(S)KMU, PURY-P-T/Y(S)KMU,
and PURY-HP-T/Y(S)KMU Series outdoor units
For safe and effective use of this kit, please read this installation
manual thoroughly before installing these components.
Sections
Page
1.
Inspecting the Shipment
2
2.
Components Required per Outdoor Unit
3
3.
Safety Precautions
5
4.
Unit Placement and Clearances
6
5.
Equipment Supports
6
6.
Additional Rooftop Mounting Guidelines
7
7.
Installing the Discharge Hoods
8
8.
Making the Electrical Connections
8
9.
Wiring Diagram
11
10.
Installing the Wind Deflectors
12
11.
Testing the Hood
12
© 2013 Mitsubishi Electric US, Inc.
1
INSPECTING THE SHIPMENT
1. Check the unit rating plate to confirm specifications are as ordered.
2. Upon receipt of equipment, carefully inspect it for possible damage. Take special care to examine the unit if
the carton is damaged.
If damage is found, it should be noted on the carrier’s freight bill. Damage claims should be filed with the carrier
immediately. Claims of shortages should be filed with the seller within 5 days.
COMPONENTS INCLUDED IN LAHK-1 KIT
(10) - Screws
(3) - Wire Ties
COMPONENTS INCLUDED IN LAHK-2 KIT
(6) - Bolts, (6) - Nuts
(5) - Conduit Clamps
(6) - Bolts, (6) - Nuts
(2) - Angle Mounting Brackets
(2) - Angle Mounting Brackets
Rear and Side Wind Deflectors
SWDK-1 – Side wind deflectors (2 per kit) 19-1/8” wide
RWDK-1 – Rear wind deflector 32” wide
RWDK-2 – Rear wind deflector 43-7/8” wide
SWDK-1 (2 pieces)
RWDK-1
© 2013 Mitsubishi Electric US, Inc.
RWDK-2
2
Components Required Per Outdoor Unit
Component selections for models using multiple modules are based on the modules being placed 1 3/16” apart. If modules
are placed further than 15” apart, additional SWDK-1 wind deflectors may be required. Also, if multiple models are placed next
to each other (less than 15” apart), fewer SWDK-1 wind deflectors may be needed.
Part Number
Description
LAHK-1
Low Ambient Hood Assembly (master) with damper control box
For single fan modules (“S” and “L”) Also combined with LAHK-2 for larger
dual fan modules (“XL”)
LAHK-2
Low Ambient Hood Assembly (slave)
Combined with the LAHK-1 for double fan (“XL”) modules
SWDK-1
Side Wind Deflector, includes 2 pieces (fits all modules)
RWDK-1
Rear Wind Deflector (1 required for “S” module, 2 required for the “XL” module)
RWDK-2
Rear Wind Deflector (1 required for “L” module)
PUHY-P-T/Y(S)KMU Series
Unit model
PUHY-P72(T,Y)KMU-A
PUHY-P96(T,Y)KMU-A
PUHY-P120(T,Y)KMU-A
PUHY-P144(T,Y)KMU-A
PUHY-P144YSKMU-A
PUHY-P168(T,Y)SKMU-A
PUHY-P192(T,Y)SKMU-A
PUHY-P216(T,Y)SKMU-A
PUHY-P240(T,Y)SKMU-A
PUHY-P264(T,Y)SKMU-A
PUHY-P288(T,Y)SKMU-A
S
1
Module Size
L
XL
1
1
1
2
1
1
1
1
2
1
1
1
1
2
1
1
LAHK-1
1
1
1
1
2
2
2
2
2
3
3
Component Quantity
LAHK-2
SWDK-1
RWDK-1
1
1
1
1
1
2
1
1
2
1
2
1
1
1
1
3
1
1
2
2
1
4
1
1
4
1
1
3
© 2013 Mitsubishi Electric US, Inc.
RWDK-2
1
1
1
1
3
PURY-P-T/Y(S)KMU Series
Unit model
PURY-P72(T,Y)KMU-A
PURY-P96(T,Y)KMU-A
PURY-P120(T,Y)KMU-A
PURY-P144(T,Y)KMU-A
PURY-P144YSKMU-A
PURY-P168(T,Y)SKMU-A
PURY-P192(T,Y)SKMU-A
PURY-P216(T,Y)SKMU-A
PURY-P240(T,Y)SKMU-A
PURY-P264(T,Y)SKMU-A
PUHY-P312(T,Y)SKMU-A
PUHY-P336(T,Y)SKMU-A
PUHY-P360(T,Y)SKMU-A
S
Module Size
L
1
1
LAHK-1
1
1
1
1
2
2
2
2
2
2
3
3
3
Component Quantity
LAHK-2
SWDK-1
RWDK-1
1
1
1
1
2
1
1
2
1
1
1
1
1
2
2
1
4
2
1
4
2
1
5
2
1
4
3
1
6
XL
LAHK-1
1
1
2
2
Component Quantity
LAHK-2
SWDK-1
RWDK-1
1
1
1
1
RWDK-2
1
1
2
2
XL
LAHK-1
1
1
2
2
Component Quantity
LAHK-2
SWDK-1
RWDK-1
1
1
1
1
RWDK-2
1
1
2
2
XL
1
1
2
2
2
1
1
2
2
2
2
3
1
1
RWDK-2
1
1
2
2
2
1
1
1
PURY-HP-T(S)KMU Series
Unit model
S
PURY-HP72TKMU-A-H
PURY-HP96TKMU-A-H
PURY-HP144TSKMU-A-H
PURY-HP192TSKMU-A-H
Module Size
L
1
1
2
2
PURY-HP-Y(S)KMU Series
Unit model
PURY-HP72YKMU-A
PURY-HP96YKMU-A
PURY-HP144YSKMU-A
PURY-HP192YSKMU-A
S
Module Size
L
1
1
2
2
© 2013 Mitsubishi Electric US, Inc.
4

Safety Precautions

Before installation and electric work
Before installing the unit, make sure you read all the
“Safety precautions”.
The “Safety precautions” provide very important points
regarding safety. Make sure you follow them.
 Symbols used in the text
Warning:
Describes precautions that should be observed to
prevent danger of injury or death to the user
Caution:
Describes precautions that should be observed to
prevent damage to the unit
Do not reconstruct or change the settings of the
protections devices.
 If the pressure switch, thermal switch, or other
protection devices are shorted and operated
forcibly, or parts other than those specified by
Mitsubishi Electric are used, fire or explosion
may result.
Warning:
Before attempting installation or
service work disconnect all power
to this equipment
Warning:
Carefully read the labels affixed to the main unit.

Warning:
This kit must be installed by an authorized Dealer
or properly trained technician.
 Improper installation by the user may result in
water leakage, electric shock, or fire.

Use the specified cables for wiring. Make the
connections securely so that the outside force of
the cable is not applied to the terminals.
 Inadequate connection and fastening may
generate heat and cause a fire.

Prepare for typhoons, hurricanes, earthquakes etc.
and install the unit at the specified place.
 Improper installation may cause the unit to topple
and result in injury.

Never repair the unit. If the air conditioner must be
repaired, consult the dealer.
 If the unit is repaired improperly, water leakage,
electric shock, or fire may result.

Do not touch the heat exchanger fins.
 Improper handling may result in injury.

When handling the product, always wear
protective equipment.
 EG: Gloves, full arm protection, and safety glasses.
 Improper handling may result in injury.
 If the unit is installed improperly, water leakage,
electric shock, or fire may result.

Have all electric work done by a licensed
electrician according to the “National Electrical
code and local Electrical codes” and “Interior Wire
Regulations” and the instructions given in this
manual and always use a special circuit.
 If the power source capacity is inadequate or
electric work is performed improperly, electric
shock and fire may result.
© 2013 Mitsubishi Electric US, Inc.
5
Unit Placement and Clearances
Outdoor units should be located in an area protected from
prevailing winds. (Shown below)
In high wind locations it may be advisable to locate the
units within a walled area.
Hood discharge should be directed away from or
perpendicular to the prevailing winds. Never toward.
When using the low ambient components, add an
additional 8" to the standard mounting clearances.
Top View
Prevailing
Wind
IMPORTANT!
Building Wall
The equipment supports must elevate the unit
at least 12” above the maximum expected snow
depth or 12” above the ground, whichever is
higher. The equipment supports must be an
open construction to minimize snow drifting
and/or ice formation during defrost.
Outdoor Units
If the units are surrounded by an enclosure, the discharge
of the hood must direct the air out and over the enclosure
walls to prevent air recirculation.
The equipment support must be firmly attached to the
ground or structure. The outdoor unit must be properly
attached to this equipment support with 3/8” stainless
steel or equal strength to at least a grade 5 bolt.
IMPORTANT!
If the unit is located in an area with continuous
high winds, the unit may require additional
bracing. Contact your local Distributor for
assistance.
Equipment Supports
When modules are combined they should be placed the
minimum 1-3/16” apart. By doing so only one set of side
wind deflectors (SWDK-1) are required per group of
modules.
© 2013 Mitsubishi Electric US, Inc.
6
Additional Rooftop Mounting Guidelines
The preferred mounting location for the outdoor units
with a low ambient kit is on the ground. However, if
this is not possible follow all additional installation
guidelines when rooftop mounting. If you have any
questions, please consult your distributor.
IMPORTANT!
The low ambient hood(s) increase the
overall height of the units and therefore
make them more susceptible to wind
stresses. Follow all guidelines when
using these on rooftop applications
The outdoor unit and equipment support should be firmly
attached to the structure.
Or, if the equipment support is the type that does not
attach to the structure, refer to the equipment support
manufacturer’s guidelines for proper size and
construction.
Depending on location, exposure and other factors
influencing the wind, Additional support (or cables) may
be required such as shown below. Contact your
distributor for assistance.
Outdoor units should be located in an area protected from
prevailing winds.
Hood discharge should be directed away from or
perpendicular to the prevailing winds. Never toward
prevailing winds.
When using the low ambient components, add an
additional 8" to the standard mounting clearances.
IMPORTANT
For all roof top installations, safety
straps must be attached between the
hood(s) and the equipment support
structure. Straps should be a minimum
3/16” vinyl coated cable.
Straps must be attached to the hood where they will not
interfere with the movement of the dampers. Attachment to
both the hood and mounting structure is to be with a bolt
through connection using a bolt ¼” or larger in diameter.
© 2013 Mitsubishi Electric US, Inc.
7
3. Align the dampers in the two hoods and tighten
both set screws on to the damper rod.
Installing the Discharge Hood(s)
Warning:
Because of component weight, hood
requires 2 people lift it into place

Once the discharge direction (towards the front or
rear of the unit) has been determined follow the
steps below to install the hood(s).

The kit comes with two angle brackets, bolts and
nuts to secure the hood in place.
STEPS:
1. Lift the hood up over the fan guard and set in
place.
2. Remove the three center screws on the top front
and back of the unit as shown below.
3. Using these same screws attach the angle
brackets under the hood flange.
4. With the 6 nuts and bolts provided attach the
hood flange to the bracket as shown.
5. Securely tighten all bolts, nuts and screws.
Making the Electrical Connections
Warning:
Before attempting installation or
service work disconnect all power to
this equipment

Remove the 1-11/32” knockout on the wiring entry
panel on the bottom front of the unit as shown below.
Remove
1-11/32”
knockout


Connecting the LAHK-1 and LAHK-2 hoods when
installing on a 2 fan module.
Once the hoods are secured in place on the unit
with the dampers in the full open position (as
shipped). Follow these steps.
STEPS:
1. Loosen the set screw securing the bottom right
damper rod on LAHK-1 hood. Slide out and
remove the damper rod.
2. Loosen the set screw securing the bottom left
damper rod on LAHK-2 hood. Slide the damper
rod out and into the opening on the side of the
LAHK-1 hood. Align rod behind both set screws.

The flexible conduit can be routed along the front
corner panel of the unit as shown. The direction of
hood discharge will determine which side to run the
conduit. (refer to the following steps)

Remove the White connector assembly from the
end of the harness by unplugging the two red
wire spade terminal disconnects.

Remove the nut and one of the conduit reducer
halves from the conduit connector prior to
running the wires through the wiring entry panel
knockout.
© 2013 Mitsubishi Electric US, Inc.
8

Carefully insert the wires through the opening in the
wiring entry panel. Replace the conduit reducer and
the connector nut and tighten securely. Refer to the
drawing below for reference.

The 24” conduit with the Thermistor
housing at the end should be
attached with the supplied clamp to
the corner panel as shown in the
detail.
DETAIL

Replace the White connector assembly on the
end of the harness by plugging the two red wire
spade terminal disconnects together.
Cabinet Opening
REAR DISHARGE “XL” MODULE
Must be removed
prior to inserting
wires
Knockout adapter
Nut
Cabinet Opening
The Conduit should be attached with the conduit clamps
and screws provided as shown in the following sets of
drawings. Front and rear routing location will be the
same method when LAHK-1 and LAHK-2 hoods are
used in combination on the dual fan modules.
IMPORTANT: Only install conduit clamps on
the corner panel as shown or on the wind
deflectors. Attaching in other locations risks
puncturing the unit internal piping resulting
in a leak and loss of refrigerant charge





IMPORTANT: Avoid contact between the wires
and any refrigerant piping inside the cabinet. If
necessary, use wires ties included with the kit
to secure away from refrigerant piping.
For front discharge, the conduit should run along the
left hand side.
For rear discharge, the conduit should run along the
right hand side.
FRONT DISCHARGE
Using the conduit clamps and screws provided
securely attach the conduit as shown in the
drawings.
Depending on the discharge direction, there may be
excess conduit length. This can be coiled and
secured to the wind deflector with one of the conduit
clamps.
Once the conduit is secured in place route the wires
up through the bottom compartment and into the top
section of the unit. The wires will connect to the
main control board as shown in the diagram below.
REAR DISHARGE

Follow the steps shown in the following diagram for
completing the wiring of the kit
© 2013 Mitsubishi Electric US, Inc.
9
Warning:
Before
attempting installation or service work disconnect all power to this equipment
Electrical
Connections
MAKE SURE POWER SUPPLY TO THE UNIT IS OFF BEFORE PROCEEDING
Step 1 Run the wires into the upper panel controls compartment.
Connect ground wire (dotted line) to green ground lug “G” inside the control box.
Locate the main PC board marked with an “X”
Step 2 Locate CNAC2 and CN505 connections on the PCB
Step 3 Follow the connection instructions on the diagram below.
Step 4 Change DIP switch SW6-4 and SW6-5 to ON for 0.12 esp fan operation
Secure any extra or loose wires with wire tie straps provided.
CN505
CNAC2
Outdoor Unit Control Board
CNAC2 Connection
Make connections as shown
CNAC2
Insert the black plug into the CNAC2
connection on the board. Connect the
white wire (male connector) to the wire that
corresponds to the outdoor unit supply voltage.
Cover unused wire with cap plug provided
208 volt = orange wire (female connector)
230/460 volt = white wire (female connector)
CN505 Connection
To reversing valve 21S4a
Change fan operation to 0.12 esp
Turn SW6-4 to the ON position
Turn SW6-5 to the ON position
4
CN505
5
Disconnect white plug with four wires from
the CN505 connection. Plug the white
male connector from the low ambient kit onto
OFF
SW6
ON
the CN505 connection. Connect the white
plug with four wires onto the spare connection.
© 2013 Mitsubishi Electric US, Inc.
10
WIRING DIAGRAM
LAHK-1 Wiring Diagram
Control Box Mounted on Hood
green
40 VA
Transformer
Ground
orange
orange
white
white
black
black
Damper Actuator
208v
R
24 V
230V
4
red
black
red
C
5
red
red
Com
red
white
240 volt ac
Black
(1)
Common
Red
(2)
+ Hot
White
(3)
2-10VDC
Orange
(5)
Y=0
Y=0
NC Relay
red
blue
1
3
Terminal strip
Circuit Board
+
Sensor
Factory switch positions
2-10VDC
-
C24v+
Outdoor Unit Control Board
10K ohm thermistor
CNAC2 Connection
common (blk)
1 amp fuse
230/460v (wh)
208v (or)
white
CNAC2
F
Insert the black plug into the CNAC2 connection
on the board. Connect the white wire (male
connector) to the wire that corresponds to the
outdoor unit supply voltage as shown below
move and secure cap to unused wire
208 volt = orange wire (female connector)
230/460 volt = white wire (female connector)
CN505 Connection
To reversing valve 21S4a
yellow
red
Part Number
LAHK-1
Supply Voltage
208/230V, 1-phase, 60Hz
Amps
0.20
Fuse Size
1 amp
M
F
red
Low Ambient Hood
black
F
M
M
F
6
5
4
3
2
1
For use with Modular PURY and PUHY
outdoor units
T/Y(S)KMU Series Only
Serial Number
Date of Manufacture
CN505
Initials
green
Disconnect white plug with four wires from
the CN505 connection. Plug the white
male connector from the low ambient kit onto
the CN505 connection. Connect the white
plug with four wires onto the spare connection.
Manufactured for Mitsubishi Electric US, Inc
© 2013 Mitsubishi Electric US, Inc.
11
Installing the Wind Deflectors
Part #SWDK-1, RWDK-1 and RWDK-2
IMPORTANT!
The equipment supports must elevate the unit
at least 12" above the maximum expected snow
depth or 12" above the ground. Whichever is
higher. The equipment supports should be an
open design to minimize snow drifting and or
ice forming during defrost.
Operational Test
Outdoor unit must be in cooling mode.
All hoods and damper controls are tested at the factory
before shipping. To perform an operational test once the
installation has been completed, follow the steps below.
.
Operation testing when the outdoor ambient is
ABOVE 50°F
1. Turn on power to the outdoor unit.
2. Make sure the outdoor unit is in cooling mode.
3. Locate the outdoor temperature sensing
thermistor at the end of the short conduit coming
out the side of the control panel, it can be seen
inside the plastic shield.
4. Using an aerosol dusting sprayer, invert the can
and spray the thermistor with very short bursts
of the cold liquid. Caution! Do Not overspray
the thermistor as it could be damaged. It may
take 10 – 20 seconds for the internal
thermistor temperature to drop. The damper
will start to move toward the closed position after
the thermistor drops below 50°F
5. Once the thermistor warms above 50°F, it will
move back to the full open position indicating the
low ambient kit is working as designed.
STEPS:
1. Remove rear wire guard(s) from unit and discard.
Retain screws for rear RWDK wind deflector
installation. Remove two top screws from side
of unit and retain, use these and 4 provided
screws for SWDK-1 side deflector installation.
AVOID TOUCHING OR DAMAGING COIL SURFACE!
2. Install the center screws part way first and then
hang the wind deflector over the coil.
Operation testing when the outdoor ambient is
BELOW 50°F
1. Turn on power to the outdoor unit.
2. Make sure the outdoor unit is in cooling mode.
3. The damper will move toward the closed
position to a predetermined position based on
the outdoor ambient temperature indicating the
low ambient kit is working as designed.
If either of the tests above fails, please check all
electrical connections according to the previous
installation instructions and test again. If the unit still
does not test correctly, contact your Mitsubishi
Distributor
3. Install remaining screws and tighten all 6 screws
securely. Repeat with all wind deflectors.
© 2013 Mitsubishi Electric US, Inc.
12