Mitsubishi Electric LAHN-1 User manual

INSTALLATION MANUAL
For safe and effective use of this kit, please read this installation manual thoroughly before installing these components.
FOR INSTALLER
MANUFACTURED FOR:
MITSUBISHI ELECTRIC US, INC.
CITY MULTI®N-Generation Y-Series Outdoor Units
LAHN-1, LAHN-2, LAHN-3, and LAHN-4 Low Ambient Hoods
for use with:
The low ambient kit allows full cooling capacity down to -10°F ambient*.
*: Full cooling capacity down to -10°F ambient at consistent cooling demand levels not less than 50% of the rated capacity.

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Contents
1. Inspecting the shipment
1. &KHFNWKHXQLWUDWLQJSODWHWRFRQ¿UPVSHFL¿FDWLRQVDUHDV
ordered.
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GDPDJH7DNHVSHFLDOFDUHWRH[DPLQHWKHXQLWLIWKHFDUWRQLV
GDPDJHG
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'DPDJHFODLPVVKRXOGEH¿OHGZLWKWKHFDUULHULPPHGLDWHO\
&ODLPVRIVKRUWDJHVVKRXOGEH¿OHGZLWKWKHVHOOHUZLWKLQGD\V
Components included in the LAHN-1/LAHN-3 Kit
LAHN-1/LAHN-3 (MAIN)
/RZ$PELHQW+RRGZLWK
'DPSHUDQG&RQWURO%R[
Components included in the LAHN-2/LAHN-4 Kit
LAHN-2/LAHN-4 (SUB)
/RZ$PELHQW+RRGZLWK
'DPSHU
 ,QVSHFWLQJWKHVKLSPHQW.........................................................2
 &RPSRQHQWVUHTXLUHGSHURXWGRRUXQLW...................................4
 6DIHW\SUHFDXWLRQV.................................................................
 8QLWSODFHPHQWDQGFOHDUDQFHV ..............................................6
 (TXLSPHQWVXSSRUWV................................................................6
 $GGLWLRQDOURRIWRSPRXQWLQJJXLGHOLQHV..................................7
 ,QVWDOOLQJWKHGLVFKDUJHKRRGV..............................................8
 0DNLQJWKHHOHFWULFDOFRQQHFWLRQV...........................................9
 :LULQJGLDJUDP .....................................................................11
 ,QVWDOOLQJWKHZLQGGHÀHFWRUV ..............................................12
 7HVWLQJWKHKRRG .................................................................13
 'DPSHUEODGHDGMXVWPHQW ..................................................14

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(12) - Screws
(4) - Screws for Installation
NOTE:7KHFRPSRQHQWVVKRZQLQWKLVLPDJHDUHIRURQO\RQHZLQG
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** NOT APPLICABLE

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2. Components required per outdoor unit
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Part Number Description
LAHN-1 /RZ$PELHQW+RRG$VVHPEO\PDLQZLWKGDPSHUFRQWUROER[ )RUVLQJOHIDQPRGXOHV³6´
$OVRFRPELQHGZLWK/$+1IRUODUJHUGXDOIDQPRGXOHV³;/´
LAHN-2 /RZ$PELHQW+RRG$VVHPEO\VXE
&RPELQHGZLWKWKH/$+1IRUGXDOIDQ³;/´PRGXOHV
LAHN-3 /RZ$PELHQW+RRG$VVHPEO\PDLQZLWKGDPSHUFRQWUROER[
)RUGXDOIDQ³/´PRGXOHV
LAHN-4 /RZ$PELHQW+RRG$VVHPEO\VXE
&RPELQHGZLWK/$+1IRUGXDOIDQ³/´PRGXOHV
SWDN-1 6LGH:LQG'HÀHFWRULQFOXGHVSDUWV¿WVDOOPRGXOHV
WDN-1 )URQW5HDU:LQG'HÀHFWRUSDFNDJHUHTXLUHGIRUWKH³6´PRGXOHSDFNDJHVUHTXLUHGIRUWKH³;/´PRGXOH
WDN-2 )URQW5HDU:LQG'HÀHFWRUSDFNDJHVUHTXLUHGIRUWKH³/´PRGXOH
**MESCA Provided 6QRZ:LQG*XDrds 5HIHUHQFH
Bulletin: &0B3$%BBBB&0B/$+1B/RZ$PELHQW+RRGB718+HDW3XPSB5HOHDVH
** NOT APPLICABLE

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Warning:
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Warning:
x This kit must be installed by an authorized dealer or
properly trained technician.
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VHFXUHO\VRWKDWWKHRXWVLGHIRUFHRIWKHFDEOHLVQRW
applied to the terminals.
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circuit.
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x 'RQRWUHFRQVWUXFWRUFKDQJHWKHVHWWLQJVRIWKH
protections devices.
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Warning:
Before attempting installation or service work disconnect
all power to this equipment and/or ice formation during
defrost.
3. Safety precautions
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Warning:
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Caution:
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 SUHYHQWGDPDJHWRWKHXQLW

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VWDQGDUGPRXQWLQJFOHDUDQFHV
Top View
Prevailing
Wind
Outdoor Units
Building Wall
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air recirculation.
4. Unit placement and clearances
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OHDVWDJUDGHEROW
CONCRETE PAD OR STRUCTURE
MINIMUM 3/8"
STAINLESS
STEEL OR EQUAL
STRENGTH TO AT
LEAST A GRADE 5
BOLT AND NUT
5. Equipment supports
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.
IMPORTANT!
The equipment supports must elevate the unit at least
DERYHWKHH[SHFWHGPD[LPXPVQRZIDOOOHYHOSOXV´PP
The equipment supports must be an
open construction to minimize snow drifting
and/or ice formation during defrost.

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6. Additional rooftop mounting guidelines
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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.
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ZLQGV
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IMPORTANT!
For all roof top installations, safety straps must be attached
between the hood(s) and the equipment support structure.
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IMPORTANT!
For all roof top
installations, safety straps
must be attached between
the hood(s) and the unit
support structure.
Safety strap
provided by
others.

8
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7. Installing the discharge hood(s)
Warning:
Before attempting installation or service work, disconnect
all power to this equipment.
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STEPS:
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/$+1KRRGVZKHQLQVWDOOLQJRQDGXDOIDQPRGXOH
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these steps.
STEPS
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SURFHHGLQJZLWKWKHIROORZLQJVWHSV
1. /RRVHQWKHVHWVFUHZVHFXULQJWKHERWWRPULJKWGDPSHUURGRQ
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2. /RRVHQWKHVHWVFUHZVHFXULQJWKHERWWRPOHIWGDPSHUURG
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DETAIL A
PROVIDED SCREW
H
OOD
BRACKET
FAN GUARD SCREW
PROVIDED NUT
STEP 1 STEP 2 STEP 3
DETAIL B
LAHN-1
LAHN-3 LAHN-2
LAHN-4
B
Warning:
Because of component weight, hood requires 2 people lift
it into place.

9
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Warning:
Before attempting installation or service work, disconnect
all power to this equipment.
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KNOCKOUT
OPTIONS
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disconnects.
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Cabinet Opening Must be removed
prior to inserting
wires
Knockout adapter
Nut
Cabinet Opening
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IMPORTANT!
Only install conduit clamps on the corner panel as shown or
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puncturing the unit internal piping resulting
in a leak and loss of refrigerant charge.
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the detail.
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.
DETAIL

10
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Warning:
Before attempting installation or service work disconnect
all power to this equipment.
0$.(685(32:(56833/<727+(81,7,62))%()25(
352&((',1*
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&RQQHFWJURXQGZLUHGRWWHGOLQHWRJUHHQJURXQGOXJ³*´LQVLGHWKH
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/RFDWHWKHPDLQ3&ERDUG
Step 2  /RFDWH &1$& DQG &1 FRQQHFWLRQV RQ WKH PDLQ 3&
ERDUG
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Step 4 &KDQJH',3VZLWFK6:DQG 6:WR21 IRUHVS
fan operation.
Step 5 6HFXUHDQ\H[WUDRUORRVHZLUHVZLWKZLUHWLHVWUDSVSURYLGHG
CN505
CNAC2
CNAC2
CN505
Change fan operation to 0.32 esp
IMPORTANT!
6HWIXQFWLRQVHWWLQJ³21´
STEP 1 STEP 2
STEP 3 STEP 4

11
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9. Wiring diagram
Ground
R(1) Common
C(2) + Hot
(3) 2-10VDC
(5)
Terminal strip
Factory switch positions
10K ohm thermistor
CNAC2 Connection
LAHN-1/LAHN-3 Wiring Diagram
Outdoor Unit Control Board
Black
Red
230V
Control Box Mounted on Hood
Transformer
40 VA
Damper Actuator
Orange
208v
White
24 V
240 volt ac
NC Relay
24v
C
Circuit Board
black
white
orange
Com
red
red
red
red
black
white
blue
green
orange
white
black
red
red
13
4
5
+
+
-
-
Sensor 2-10VDC
Y=0Y=0
To reversing valve 21S4a
Serial Number
Date of Manufacture
Initials
connector) to the wire that corresponds to the
outdoor unit supply voltage as shown below
CN505 Connection
CNAC2
1amp
on the board. Connect the white wire (male
For Use with Modular N-Generation
Y-Series Outdoor Units Only
plug with four wires onto the spare connection.
208 volt = orange wire (female connector)
move and secure cap to unused wire
the CN505 connection. Connect the white
the CN505 connection. Plug the white
male connector from the low ambient kit onto
Disconnect white plug with four wires from
230/460 volt = white wire (female connector)
Insert the black plug into the CNAC2 connection
Manufactured for Mitsubishi Electric US, Inc.
Low Ambient Hood
Part Number LAHN-1/LAHN-3
Supply Voltage 208/230V, 1-phase, 60Hz
Amps 0.20
Fuse Size
230/460v (wh)
208v (or)
common (blk)
M
F
F
red
red
green
1ampfuse black
white
6
5
4
3
2
1
FM
MF
yellow

12
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2'8DQGGLVFDUGAVOID TOUCHING OR DAMAGING THE COIL
SURFACE!
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WDN-2.
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GHÀHFWRUDQGrepeat steps 3 and 4.
6. Follow Steps 7-9 for Large and XLarge ODUs ONLY7KHVH
VWHSVDUHIRULQVWDOOLQJWKHZLQGGHÀHFWRUVRQWKHIURQWDQGEDFNRI
WKH/DUJHDQG;/DUJH2'8V
)RULQVWDOODWLRQRQWKHIURQWDQGEDFNRIWKH2'8SLFNXSWKHOHIW
SDQHORIWKHZLQGGHÀHFWRUDQGVFUHZLQWRWKHWRSPRVWDYDLODEOH
KROHLQWKH2'8XVLQJWKHVFUHZSURYLGHG7KHSRVLWLRQRIWKHWRS
PRVWDYDLODEOHKROHGLIIHUVGHSHQGLQJRQWKHGHVLJQDWHGVXUIDFHRI
the ODU.
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PRVWDYDLODEOHKROHLQWKH2'87KHSRVLWLRQRIWKHERWWRPPRVW
DYDLODEOHKROHZLOOGLIIHUGHSHQGLQJRQWKHGHVLJQDWHGVXUIDFHRIWKH
ODU.

13
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11. Testing the hood
2SHUDWLRQWHVWLQJZKHQWKHRXWGRRUDPELHQWLV$%29()
1. 7XUQRQSRZHUWRWKHRXWGRRUXQLW
2. 0DNHVXUHWKHRXWGRRUXQLWLVLQFRROLQJPRGH
3. /RFDWHWKHRXWGRRUWHPSHUDWXUHVHQVLQJWKHUPLVWRUDWWKHHQGRI
WKHVKRUWFRQGXLWFRPLQJRXWWKHVLGHRIWKHFRQWUROSDQHO7KH
WKHUPLVWRUFDQEHVHHQLQVLGHWKHSODVWLFVKLHOG
4. 8VLQJDQDHURVROGXVWLQJVSUD\HULQYHUWWKHFDQDQGVSUD\WKH
WKHUPLVWRUZLWKYHU\VKRUWEXUVWVRIWKHFROGOLTXLG
Caution! Do Not overspray the thermistor as it could be
GDPDJHG,WPD\WDNH±VHFRQGVIRUWKHLQWHUQDO
thermistor temperature to drop.
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WKHWKHUPLVWRUGURSVEHORZ)
 2QFHWKHWKHUPLVWRUZDUPVDERYH)LWZLOOPRYHEDFNWRWKH
IXOORSHQSRVLWLRQLQGLFDWLQJWKHORZDPELHQWNLWLVZRUNLQJDV
GHVLJQHG
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1. 7XUQRQSRZHUWRWKHRXWGRRUXQLW
2. 0DNHVXUHWKHRXWGRRUXQLWLVLQFRROLQJPRGH
3. 7KHGDPSHUZLOOPRYHWRZDUGWKHFORVHGSRVLWLRQWRD
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LQGLFDWLQJWKHORZDPELHQWNLWLVZRUNLQJDVGHVLJQHG
4. 2QFHWKHWKHUPLVWRUZDUPVDERYH)LWZLOOPRYHEDFNWRWKH
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GHVLJQHG
3LFNXSWKHULJKWSDQHORIWKHZLQGGHÀHFWRUDQGrepeat steps 7
DQGIRUWKHULJKWVLGHV
/LQHXSWKHIURQWSDQHORIWKHZLQGGHÀHFWRUZLWKWKHVLGHSDQHOV
RIWKHZLQGGHÀHFWRUDOUHDG\LQVWDOOHGDQGWLJKWHQWKHVFUHZV
XVLQJWRUTXHRI1.P
NOTE)RU6PDOODQG;/DUJH2'8XVH:'1DQGIRU/DUJH
2'8XVH:'16:'1FDQEHXVHGIRUWKHVLGHVRIDQ\2'8
,IHLWKHURIWKHWHVWVDERYHIDLOVSOHDVHFKHFNDOOHOHFWULFDOFRQQHFWLRQVDFFRUGLQJWRWKHSUHYLRXVLQVWDOODWLRQLQVWUXFWLRQVDQGWHVWDJDLQ
,IWKHXQLWVWLOOGRHVQRWWHVWFRUUHFWO\FRQWDFW\RXU0LWVXELVKLGLVWULEXWRU
Ambient Temp Hood Angle Output Voltage Resistance
>)@ >@ v
-10 80 8.78 117960
 80 8.78 100184
0707.9
70 7.9 72906
10 70 7.9 62460
 70 7.9 
20 60 7.04 46220
 60 7.04 39917
30 60 7.04 
 60 7.04 30000
40 23(1 2 26104
 23(1 2 22767
OPEN 60 70 80
50
45
40
35
30
25
20
15
10
5
0
-5
-10
= As Temperature Increases
= As Temperature Decreases
Damper Angle [°]
Outdoor Ambient Temperature [°F]
LAHN Damper Hysteresis Control
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FRPSOHWHGIROORZWKHVWHSVEHORZ3OHDVHUHIHUWRWKHFKDUWDQGWDEOHEHORZIRUGHWDLOHGFRQWUROORJLF

14
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12. Damper blade adjustment
IMPORTANT!
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:KHQZRUNLQJSURSHUO\WKHGDPSHUZLOOEHDSSUR[LPDWHO\
FORVHGDW)DQGEHORZ7KHIROORZLQJSURFHGXUHZLOODOORZSURSHU
DGMXVWPHQW
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SURSHUO\
Belimo motor angle indicating
scale shown below. The factory setting for the mechanical stop LVVKRZQEHORZDWGHJUHHKRRGDQJOH
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Basic Service Overview
1. 6HWGDPSHUPRWRUVWRSWRGHJUHHV
2. /RRVHQ³8´EROWVRQGDPSHUVKDIW
3. &UDQNWKHPRWRUDJDLQVWWKHGHJUHHVWRSWKHQORFNLQWR
SRVLWLRQ
4. 6HWGDPSHUWRDSSUR[ó´RSHQ8VHGDPSHUFUDQNKDQGOHDV
VSDFHU
 5HWLJKWHQ³8´EROWVRQGDPSHUVKDIW
6. 5HOHDVHPRWRUE\VOLJKWO\FUDQNLQJZLWKKDQGOH
&KHFNRSHUDWLRQPDQXDOO\
7. 7KHJRDOLVWRKDYHó´RSHQLQJRQGDPSHUDVVHPEO\
LQWKHGHJUHHSRVLWLRQ

15
© 2019 Mitsubishi Electric US, Inc. 6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH
STEP BY STEP INSTRUCTIONS:
1. /RRVHQWKH3KLOLSVKHDGVFUHZIRUWKHPHFKDQLFDOVWRS
1.
2. 6OLGHWKHPHFKDQLFDOVWRSWRKDOIZD\EHWZHHQDQGDQG
WLJKWHQWKHVFUHZPDNLQJVXUHWKHORFDWLQJWHHWKRQWKHVWRSDUH
HQJDJHGLQWRWKHDFWXDWRUPRWRUWHHWK
3. /RRVHQWKHQXWVRQWKHGDPSHUVKDIW³8´FODPS 4. 8VLQJWKHFUDQNKDQGOHWXUQWKHPRWRUFRXQWHUFORFNZLVHXQWLOWKH
LQGLFDWRUVQXJVDJDLQVWWKHVWRSDWGHJUHHV
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GDPSHUEODGHQHDUWKHVFUHZVDVVKRZQWRHQVXUHLWLVRSHQ
DSSUR[LPDWHO\óLQFKDWGHJUHHV

16
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7. +ROGLQJWKHEODGHVDJDLQVWWKHKDQGOHUHWLJKWHQWKHQXWVRQ
WKHGDPSHUVKDIW³8´FODPS
(QVXUHWKDWWKHHQGRIWKHVKDIWLVÀXVKWRWKHHGJHRIWKHFODPS
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8. 6OLJKWO\FUDQNWKHKDQGOHWRUHOHDVHWKHPRWRU7KHGDPSHUZLOO
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Review and Manual Test
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© 2019 Mitsubishi Electric US, Inc. 6SHFL¿FDWLRQVDUHVXEMHFWWRFKDQJHZLWKRXWQRWLFH
MEUS DOC# MD-1922-K001 Ver. 3, November 2019
Please be sure to put the contact address/telephone number on
this manual before handing it to the customer.
This product is designed and intended for use in the
commercial environment.
www.mylinkdrive.com
Toll Free: 800-433-4822
Manufactured for MITSUBISHI ELECTRIC US, INC.