Lennox XP15 User manual

,1,_2008LennoxindustriesInc,

Dallas,Texas,USA

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

X_ WARNING

_, CAUTION

INSTALLATION

INSTRUCTIONS

Dave Lennox Signature ®

Collection XP15 Units

HEAT PUMP UNITS _-_Technical

505,328M U£[ Publications

04/08 Litho U.S.A.

Supersedes 03/08

XP15 Outdoor Unit ............................ 1

Shipping and Packing List ...................... 1

Unit Dimensions ............................... 2

General Information ........................... 2

Recovering Refrigerant from Existing System ..... 4

Positioning New Outdoor Unit .................. 5

Removing Panel .............................. 6

Electrical Connections ......................... 7

New or Replacement Line Set ................... 9

Brazing Line Set Connections ................... 11

Removing Existing Refrigerant Metering Device . .. 11

Testing for Leaks .............................. 11

Removing Service Valve Port Core .............. 12

Flushing Existing System ....................... 12

Installing New Refrigerant Metering Device ....... 13

Installing Service Valve Port Core ............... 14

Evacuating the System ......................... 14

Start-Up Procedures ........................... 15

System Operations ............................ 19

Lennox System Operation Monitor (LSOM) ....... 19

Defrost System ............................... 21

Maintenance .................................. 26

Homeowner Information ........................ 26

Start-Up and Performance Checklist ............. 28

AIMPORTANT

IMPORTANT

The Lennox XP15 outdoor units use HFC-410A

refrigerant, This unit must be installed with a matching

indoor coil and line set as outlined in the Lennox

Engineering Handbook, XP15 series outdoor units are

designed for use in check expansion valve (CTXV)

systems only, and are not designed to be used with other

refrigerant flow control devices. The Lennox Engineering

Handbook lists compatible indoor CTXV kits which are

ordered separately.

1 - Assembled XP15 outdoor unit

1 - Bushing (for low voltage wiring)

2 - Grommets (for liquid and vapor lines)

Check equipment for shipping damage. If you find any

damage, immediately contact the last carrier.

04/08

IIIHIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Page 1 505,328M

IIIIIIIIIIIIIIIIIIIIIIHIIIIIIIIIIIIIIIIIIIIIIII

39-1/2 DISCHARGE AIR

(1003) t

UNIT SUPPORT

FEET \

16-7/8

(429)

8 -3/4

(2_2)

3-1/8

(79) "-_

SIDE VIEW

®®®

ELECTRICAL IN_ETS __

37 (94O)

[-024 thru -042]

47 (1194)

[-048 and -060]

VAPOR LINE

INLET

LIQUID LINE

/INLET

4-7/16.__

(113)

18!1/2

(470) 7--

8 (203)

&CONTACTOR

DEFROST CONTROL

SYSTEM

OPERATION MONITOR

VAPOR VALVE AND

26-7/8 GAUGE PORT ..

(6_3) DISCHARGE LINE

3-3/4 (95) VAPOR

_' FILTER

4-5/8

(117)

BASE WITH ELONGATED LEGS

WARNING I

1 (25)

35-1/2

(902)

ACCESS VIEW

FAN

CAPACITOR

COMPRESSOR

DOME

COMPRESSOR

PLUG

LOW PRESSURE

HIGH PRESSURE

SWITCH

XP15 Parts Arrangement

These instructions are intended as a general guide and do

not supersede local codes in any way. Consult authorities

who have jurisdiction before installation.

When servicing or repairing HVAC components, ensure

caps and fasteners are appropriately tightened. Table 1

lists torque values for typical service and repair items.

Table 1. Torque Requirements

Part Recommended Torque

Service valve cap 8 ft.- lb. 11 NM

Sheet metal screws 16 in.- lb. 2 NM

Machine screws #10 28 in.- lb. 3 NM

Compressor bolts 90 in.- lb. 10 NM

Gauge port seal cap 8 ft.- lb. 11 NM

505328M 04/08

Page 2

USINGMANIFOLD GAUGE SETS

HFC-410A refrigerant manifold gauge sets must be

capable of handling higher system operating pressures.

The gauge set shall be rated for use with pressures of 0 -

800 psig on the high side, and a low side of 30 inches of

vacuum (Hg) to 250 psig, which retards when opened to

500 psig. Gauge hoses must be rated for use up to 800 psig

of pressure with a 4000 psig burst rating,

OPERATING SERVICE VALVES

IMPORTANT

The liquid and vapor lines service valves with gauge ports

as illustrated in figures 2 and 3 are used for removing

refrigerant, flushing, leak testing, evacuating, checking

charge and charging,

Each valve is equipped with a service port which has a

factory-installed valve stem.

1/6 TURN 1/12 TURN

This illustrates how to use a wrench to tighten caps an additional

1/6 or 1/12 turn clockwise.

Figure 1. Cap Tightening Distances

IMPORTANT

Operating Angle-Type Service Valve

To Access Angle-Type Service Port:

A service port cap protects the service port core from

contamination and serves as the primary leak seal.

1. Remove service port cap using an appropriately sized

wrench.

2. Connect gauge to the service port.

3. When testing iscompleted, replace service port cap and

tighten as follows:

•With Torque Wrench: Finger tighten and then

tighten per table 1 on page 2.

• Without Torque Wrench: Finger tighten and with an

appropriately sized wrench to turn an additional

1/6 turn clockwise as illustrated in figure 1.

To Open and Close Angle-Type Service Valve:

A valve stem cap protects the valve stem from

contamination and assures a leak-free seal.

1, Remove stem cap with a wrench,

2. Use a service wrench with a hex-head extension

(3/16" for liquid-line valve sizes and 5/16" for

vapor-line valve sizes) to back the stem out

counterclockwise as far as it will go.

3. Replace the stem cap and tighten as follows:

• With Torque Wrench: Tighten finger tight and then

tighten per table 1 on page 2.

• Without Torque Wrench: Finger tighten and with an

appropriately sized wrench to turn an additional

1/12 turn clockwise as illustrated in figure 1,

NOTE -A label with specific torque requirements may be

affixed to the stem cap, If the label is present, use the

specified torque listed,

SERVICE PORT CAP o

SERVICE PORT _

CORE _ _ "i

CLOSED TO BOTH

INDOOR AND

OUTDOOR UNITS]

VALVE STEM

FRON%SEATEI_

TO INDOOR

UNIT

TO OUTDOOR _

UNIT

VALVE IS FRONT-SEATED

(CLOSED)

jSERV,CEPORT

,, HHERE

SERVICE PORT CAP _ _:_ VALVE IS(oPENED)BACK=SEATED

SERVICE PORT _

CORE SERVICE PORT

OPEN TO BOTH

INDOOR AND (VALVE STEM

OUTDOOR UNITS] L _ _ SHOWNOPEN)INSERTHEX

VALVE STEM WRENCH HERE

BACKED-SEATE_ __

TO INDOOR

UNIT

TO OUT UNIT

Figure 2. Angle -Type Service Valve

Page 3

XP15 SERIES

Operating Bali-Type Service Valve

To Access Bali-Type Service Port:

A service port cap protects the service port core from

contamination and serves as the primary leak seal,

1, Remove service port cap using an appropriately sized

wrench,

2. Connect gauge to the service port.

3, When testing iscompleted, replace service port cap and

tighten as follows:

•With Torque Wrench: Finger tighten and then

tighten per table table 1 on page 2.

• Without Torque Wrench: Finger tighten and use an

appropriately sized wrench to turn an additional

1/6 turn clockwise as illustrated in figure 1,

To Open and Close Bali-Type Service Valve:

A valve stem cap protects the valve stem from

contamination and assures a leak-free seal,

1, Remove stem cap with a wrench,

2, Use an adjustable wrench to open, To open valve,

rotate stem counterclockwise 90°, To close rotate

stem clockwise 90°.

3, Replace the stem cap and tighten as follows:

• With Torque Wrench: Finger tighten and then

tighten per table 1 on page 2.

• Without Torque Wrench: Finger tighten and use an

appropriately sized wrench to turn an additional

1/12 turn clockwise as illustrated in figure 1.

NOTE -A label with specific torque requirements may be

affixed to the stem cap. If the label is present, use the

specified valve listed.

To INDOOR UNIT

Open to line set when valve

is closed, to both line set

and unit when valve is open. Ball (Shown Closed)

Valve Stem

Service Port

Core

Service Port

Cap

To outdoor unit

STEM CAP

Use Adjustable Wrench To open: rotate Stem Counter-Clock-

wise 90°.To close: rotate Stem clockwise 90°.

Figure 3. Bali-Type Service Valve

Remove existing HCFC-22 refrigerant using one of the

following methods:

METHOD 1:

If the existing outdoor unit is not equipped with shut-off

valves, or if the unit is not operational and you plan to use

the existing HCFC-22 or refrigerant to flush the system:

1, Disconnect all power to the existing outdoor unit,

2, Connect to the existing unit a gauge set, clean

recovery cylinder and a recovery machine. Use the

instructions provided with the recover machine on how

to setup the connections,

3, Remove all HCFC-22 refrigerant from the existing

system, Check gauges after shutdown to confirm that

the entire system is completely void of refrigerant,

4, Disconnect the liquid and vapor lines from the existing

outdoor unit,

5, Remove the existing outdoor unit,

NOTE -Use recovery machine instructions for specific

setup requirements.

Recovery Machine

Clean Recovery Cylinder

Manifold Gauges

Outdoor/_Unit

Figure 4. Typical Refrigerant Recovery (Method 1)

METHOD 2:

If the existing outdoor unit is equipped with manual shut-off

valves and you plan to use new HCFC-22 refrigerant to

flush the system -

1, Start the existing HCFC-22 system in the cooling

mode and close the liquid line valve,

2, Pump all of the existing HCFC-22 refrigerant back into

the outdoor unit,

NOTE -It may be necessary to bypass the low pressure

switches to ensure complete refrigerant evacuation.

505328M 04/08

Page 4

3.Whenthelowsidesystempressuresreach0 psig,

closethevaporlinevalve,

4. Disconnectall powerto theexistingoutdoorunit.

Checkgaugesaftershutdownto confirmthat the

valvesarenotallowingrefrigeranttoflowbackintothe

lowsideofthesystem,

5. Disconnecttheliquidandvaporlinesfromtheexisting

outdoorunit.

6. Removetheexistingoutdoorunit,

CAUTION

See Unit Dimensions on page 2 for sizing mounting slab,

platforms or supports, Refer to figure 5 for mandatory

installation clearance requirements.

NOTES:

Service clearance of 30 in, (762 mm) must be maintained on one of

the sides adjacent to the control box,

Clearance to one of the other three sides must be 36 in, (914 mm)

Clearance to one of the remaining two sides may be 12 in. (305

mm) and the final side may be 6 in, (152 mm)

48 in, (1219 ram) clearance required on top of unit,

A clearance of 24 in, (610 mm) must be maintained between two

units

Figure 5. Installation Clearances

POSITIONING CONSIDERATIONS

Some localities are adopting sound ordinances based on

the unit's sound level registered from the adjacent

property, not from the installation property, Install the unit

as far as possible from the property line. When possible,

do not install the unit directly outside a window, Glass has a

very high level of sound transmission. For proper

placement of unit in relation to a window see the provided

illustration in figure 6.

Install unit away

from windows

Two 90° elbows installed in line set -

will reduce line set vibration.

Figure 6. Outside Unit Placement

PLACING UNIT ON SLAB

When installing a unit at grade level, the top of the slab

should be high enough above the grade so that water from

higher ground would not collect around the unit as

illustrated in figure 7. Slab may be level or have a slope

tolerance away from the building of not more than two

degrees, or 2 inches per 5 feet (51 mm per 1524 mm).

Install unit level or, if on a slope, maintain slope tolerance of 2

degrees (or 2 inches per 5 feet [50 mm per 1.5 m]) away from

building structure.

Building

Structure

7/ Mounting

Slab

-T--

Figure 7. Ground Level Slab Mounting

INSTALLING UNIT ON ROOF

Install the unit a minimum of 6 inches (152 mm) above the

roof surface to avoid ice build-up around the unit. Locate

the unit above a load bearing wall or area of the roof that

can adequately support the unit, Consult local codes for

rooftop applications.

If unit coil cannot be mounted away from prevailing winter

winds, a wind barrier should be constructed as illustrated in

figure 8. Size barrier at least the same height and width as

outdoor unit, Mount barrier 24 inches (610 mm) from the

sides of the unit in the direction of prevailing winds.

Page 5

XP15 SERIES

PREVAILING _.

WINTER WINDS

I WIND BARRIER

INLET AIR ,_

INLETAIR

O INLET AIR

2_'_6" 10 ram)

With unit positioned at installation site, remove two side

Iouvered panels to expose the unit base pan. Install the

brackets as illustrated in figure 10 using conventional

practices; replace the panels after installation is complete.

IMPORTANT

Figure 8. Rooftop Application and Wind Barrier

NOTE -If necessary for stability, anchor unit to slab as

described in Stabilizing Unit on Uneven Surfaces.

ELEVATING THE UNIT

These units are outfitted with elongated-shaped feet as

illustrated in figure 9.

BASE

LEG DETAIL 2"(50.8MM)

SCH 40

FEMALE

THREADED

ADAPTER

Figure 9. Elevated Slab Mounting using Feet

Extenders (Larger Base Units)

If additional elevation is necessary, raise the unit by

extending the height of the unit support feet. This may be

done with 2" SCH 40 female threaded adapter. The

specified coupling will fit snuggly into the recess portion of

the feet. Use additional 2" SCH 40 male threaded adapters

which can be threaded into the female threaded adapters

to make additional adjustments to the level of the unit.

NOTE -Keep the height of extenders short enough to

ensure a sturdy installation, If it is necessary to extend

further, consider a different type of field-fabricated

framework that is sturdy enough for greater heights.

STABILIZING UNIT ON UNEVEN SURFACES

To help stabilize an outdoor unit, some installations may

require strapping the unit to the pad using brackets and

anchors commonly available in the marketplace.

Page 6

Slab Side Mounting

#101/2" LONG

SELF-DRILLING SHEET

METAL SCREWS /

STABILIZING BRACKET

(18 GAUGE METAL - 2"

RW/DTDHi HEIGHT AS _,_1 f, _

#10 1-1/4" LONG HEX

HD SCREW AND

FLATWASHER

PLASTIC ANCHOR - USE IF CONCRETE

(HOLE DRILL 1/4"); NOT IF PLASTIC SLAB

(HOLE DRILL 1/8").

IDeck Top

Mounting

STABILIZING MINIMUM 1

BRACKET (18 PER SIDE

GAUGE METAL - 2"

WIDTH; HEIGHT

AS REQ'D); BEND

TO FORM RIGHT FOR EXTRA

ANGLE STABILITY

ONE BRACKET PER SIDE (MIN.); FOR EXTRA STABILITY,

TWO BRACKETS PER SIDE, 2" FROM EACH CORNER.

Figure 10. Installing Stabilizer Brackets

CAUTION

505328M 04/08

REMOVE4SCREWSTOREMOVEPANELFOR

ACCESSINGCOMPRESSORANDCONTROLS.

_ INSTALLBYPOSITIONINGPANELWITHHOLES

ALIGNED;INSTALLSCREWSANDTIGHTEN.

Figure 11. Access Panel

IMPORTANT! DO NOT ALLOW K-_

PANELS TO HANG ON UNIT BY

TOP TAB. TAB IS FOR ALIGNMENT )

ANDNOTDESIGNEDTOSUPPORT

WE,GHTOFPANEL

PANEL SHOWN SLIGHTLY _ _

ROTATED TO ALLOW TOP TAB TO _

EXIT (OR ENTER) TOP SLOT FOR _

REMOVING (OR INSTALLING) _

PANEL.

SCREW

L. HOLES......_ _iiii_///l _

ii t_

Detail A

Detail B -_-_\_

ROTATE IN THIS DIRECTION;

THEN DOWN TO REMOVE PANEL

MAINTAIN MINIMUM PANEL ANGLE (AS CLOSE TO PARALLEL WITH THE UNIT

AS POSSIBLE) WHILE INSTALLING PANEL. HOLD DOOR FIRMLY ALONG

ANGLE MAY BE TOO THE HINGED SIDE TO MAINTAIN

EXTREME FULLY-ENGAGED TABS

PREFERRED ANGLE

FOR INSTALLATION

Detail D

Figure 13. Removing/Installing Louvered Panels

(Detail D)

ACCESS PANEL

Removal and reinstallation of the access panel is

illustrated in figure 11,

LOUVERED PANELS

Remove the Iouvered panels as follows:

1, Remove two screws, allowing the panel to swing open

slightly.

2, Hold the panel firmly throughout this procedure.

Rotate bottom corner of panel away from hinged

corner post until lower three tabs clear the slots as

illustrated in figure 12, detail B.

3, Move panel down until lip of upper tab clears the top

slot in corner post as illustrated in figure 12, detail A,

Position and Install Panel--Position the panel almost

parallel with the unit as illustrated in figure 13, detail D with

the screw side as close to the unit as possible. Then, in a

continuous motion:

• Slightly rotate and guide the lip of top tab inward as

illustrated in figure 12, details A and C; then upward

into the top slot of the hinge corner post.

• Rotate panel to vertical to fully engage all tabs,

• Holding the panel's hinged side firmly in place, close

the right-hand side of the panel, aligning the screw

holes.

When panel is correctly positioned and aligned, insert the

screws and tighten.

Figure 12. Removing/Installing Louvered Panels

(Detail A, B and C)

A'kWARNING

In the U,S.A., wiring must conform with current local codes

and the current National Electric Code (NEC). In Canada,

wiring must conform with current local codes and the current

Canadian Electrical Code (CEC),

ELECTRICAL AND CONTROL CONNECTIONS

Refer to the furnace or blower coil installation instructions

for additional wiring application diagrams and refer to unit

nameplate for minimum circuit ampacity and maximum

overcurrent protection size.

NOTE -Connect conduit to the unit using a proper conduit

fitting. Units are approved for use only with copper

conductors. A complete unit wiring diagram is located on

the back side of the unit's access panel.

NOTE -For proper voltages, select thermostat wire gauge

per the following chart:

Page 7

XP15 SERIES

Table 2. Wire Run Length

Wire Run Length AWG # Insulation Type

less than 100' (30m) 18 color-coded, temperature

more than 100' (30m) 16 rating 35°C minimum

1. Install room thermostat (ordered separately) on an

inside wall approximately in the center of the area and

5 feet (1.5 m) from the floor. Do not install on an outside

wall or where sunlight, drafts or vibrations affect it.

2. Install low voltage wiring from outdoor to indoor unit

and from thermostat to indoor unit as illustrated in

figure 14.

3. Install line voltage power supply to unit from a properly

sized disconnect switch as illustrated in figure 15.

4. Ground unit from ground lug as illustrated in figure 15

to unit disconnect switch, or to an earth ground.

LI _._

RTI$

AMBIENT

SENSOR

R721 DEFROST

COIL SENSOR

S4HIGH

PRESSURE

SWITCH

$87 LOW

PRESSURE

SWITCH

REVERSING

VALVE

LZ_

OMPRESSOR

CONTACTOR

54O

AI32

HRI A

AI32

EQUIPMENT

GROUND

COMPRESSOR

CONTACTOR

BLACK TBI

(W5_

(W8

"-(v _

CB31MV

CBX32MV A2 SIGNATURE

81M2B

TWISTEO

PAIR

•I

A NOTE

FOR USE WITH COPPER CONDUCTORS ONLY.

REFER TO UNIT RATING PLATE FOR

MINIMUM CIRCUIT AMPACITY AND

MAXIMUM OVER CURRENT PROTECTION SIZE

A REFER TO COMPRESSOR N UNIT

FOR ACTUAL TERMINAL mRmANGEMENT.

Z_ WARNING

ELECTRIC SHOCK HAZARD,CAN CAUSE INJURY

OR DEATH.UNIT MUST BE GROUNDED IN

ACCOROANCE WITH NATIONAL AND LOCAL CODES.

A RTI4 SENSOR, OUTDOOR TEMP (OPTIONAL)

LINE VOLTAGE FIELD INSTALLED

CLASS II VOLTAGE FIELD INSTALLED

Figure 14. Typical Low-Voltage Field Wiring

GROUND

208-230/60/1 L1

K1-1 COMPRESSOR CONTACTOR

GROUNDLUG CONTROLBOX _'-

CONTACTOR

DEFROST CONTROL

BOARD (DCB)

-''_/ L_)NNNTOoXRt LYs'<oTE_ OPERATION

"__ _[3_/ _ CAPACITOR

WARNING! - ELECTRIC SHOCK HAZARD. Can cause INJURY or DEATH. Unit must be grounded in accordance with national and local codes.

NOTE - For use with copper conductors only. Refer to unit rating plate for minimum circuit ampacity and maximum over-current protection size.

Figure 15. Typical High-Voltage Field Wiring (Unit Panel)

505328M 04/08

Page 8

This sectionprovidesinformationon installationor

replacementofexistinglinesets.Iflinesetsarenotbeing

installedorreplace,thenproceedtoBrazing Connections

on page 11.

If refrigerant lines are routed through a wall, seal and

isolate the opening so vibration is not transmitted to the

building, Pay close attention to line set isolation during

installation of any HVAC system. When properly isolated

from building structures (walls, ceilings, floors), the

refrigerant lines will not create unnecessary vibration and

subsequent sounds.

REFRIGERANT LINE SET

Field refrigerant piping consists of liquid and vapor lines

from the outdoor unit (sweat connections) to the indoor unit

coil (flare or sweat connections). Use Lennox L15 (sweat,

non41are) series line sets, or use field-fabricated

refrigerant lines as listed in table 3.

MATCHING WITH NEW OR EXISTING INDOOR COIL

AND LINE SET

IMPORTANT

When installing refrigerant lines longer than 50 feet, see

the Lennox Refrigerant Piping Design and Fabrication

Guidelines, or contact Lennox Technical Support Product

Applications for assistance. To obtain the correct

information from Lennox, be sure to communicate the

following points:

Model (XP15) and size (e.g. -060) of unit.

Line set diameters for the unit being installed (from

table 3)

Number of elbows and if there is a rise or drop of the

piping.

Line sets for heat pump applications can not be installed

underground. For more information see the Lennox

Refrigerant Piping Design and Fabrication Guidelines, or

contact Lennox Technical Support Product Applications

for assistance.

Table 3. Refrigerant Line Sets

Valve Sizes Recommended Line Set

Model Liquid Vapor Liquid Vapor L15

Line Line Line Line LineSets

-024 3/8 in. 3/4 in. 3/8 in 3/4 in. L15-41

-030 (10mm) (19mm) (10mm) (19mm) 15-50ft.

-- (5 - 15 m)

-036

-042 3/8 in. 7/8 in 3/8 in. 7/Sin L15-65

15 - 50 ft.

(10mm) (22mm) (10mm) (22mm) (5-15m)

3/8 in. 1-1/8 in, 3/8 in. 1-1/8 in, Field

-060 (10 ram) (29 ram) (10 ram) (29 ram) Fabricated

INSTALLING LINE SET

Line Set Isolation--This reference illustrates

procedures, which ensure proper refrigerant line set

isolation:

• Installation of line sets on horizontal runs is

illustrated in figure 16.

• Installation of line sets on vertical runs is illustrated

in figure 17 on page 10.

• Installation of a transition from horizontal to

vertical is illustrated in figure 18 on page 10.

TO HANG LINE SET FROM JOIST OR RAFTER,

USE EITHER METAL STRAPPING MATERIAL OR

ANCHORED HEAVY NYLON WIRE TIES.

WIRE TIE (AROUND

VAPOR LINE ONLY

STRAPPING MATERIAL

(AROUND VAPOR LINE

ONLY)

8 FEET TAPE OR

WIRE TIE

STRAP THE VAPOR LINE TO THE

METAL JOIST OR RAFTER AT 8 FEET

SLEEVE INTERVALS THEN STRAP THE

TAPE OR LIQUID LINE TO THE VAPOR LINE.

FLOOR JOIST OR _ _ _%

ROOF RAFTER _-

_._ I1

Figure 16. Refrigerant Line Sets: Installing

Horizontal Runs

Page 9

XP15 SERIES

IMPORTANT-

OUTSIDEWALLREFRIGERANTLINESMUST

NOTCONTACTWALL.VAPORLINELIQUIDLINE

NOTE-SIMILAR

INSTALLATION

PRACTICESSHOULDBE

USEDIFLINESETISTO

BEINSTALLEDON

EXTERIOROFOUTSIDE

WALL.

VAPORLINEWRAPPED

WITHARMAFLEX

PVC_ CAULK

PIPE FIBERGLASS

INSULATION

IMPORTANT!

REFRIGERANTLINES

MUSTNOTCONTACT

STRUCTURE.

ANCHOREDHEAVY

NYLONWIRETIE

WALL

STUD

METALSLEEVE

AUTOMOTIVE

MUFFLER-TYPEHANGER

WALL

STUD

STRAPLIQUIDLINE

TOVAPORLINE

JIDLINE

VAPORLINE-WRAPPED

INARMAFLEX

IUIDLINE

TOVAPORLINE

LIQUID

LINE

VAPORLINEWRAPPED

METALSLEEVE INARMAFLEX

Figure 17. Refrigerant Line Sets: Installing Vertical

Runs (New Construction Shown) Figure 18. Refrigerant Line Sets: Transition from

Vertical to Horizontal

CUT AND DEBUR

INSTALL CORE ONLY FOR

3OTH SERVICE PORTS after they

have coolED.

INDOOR UNIT

REMOVE CAP AND CORE FROM

BOTH LIQUID AND SUCTION

SERVICE PORTS

outdoor

UNIT

SERVICE PORT MUST BE

OPEN TO ALLOW EXIT

POINT FOR NITROGEN SERVICE

j SUCTION LINE _/VALVE

_QU_DUNE SERV_CEJ

VALVE

Figure 19. Brazing Connections

Page 10

505328M 04/08

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