Lenox HS40-018, HS40-024, HS40-036, HS40-065, HS40-048 Installation Instructions Manual

LENNDX

INSTALLATION

,1,_2000 Lennox Industries Inc.

Dallas, Texas, USA

HS40 condensing units use R407C which is an ozone

friendly HFC refrigerant. This unit must be installed with a

matching indoor coil and line set as outlined in the Lennox
Engineering Handbook. HS40 condensing units are de-
signed for use in expansion valve systems only. They are

not designed to be used in RFC systems. An expansion
valve and filter drier approved for use with R407C have
been shipped with the unit. These components must be

installed prior to unit operation.

A, WARNING

INSTRUCTIONS

HS40 S UNITS

CONDENSING UNITS lIE_ :.)
504,186M .LU_ Publications

11/2002 Lithe U.S.A.
Supersedes 4/2000

HS40 Condensing Unit ......................... 1

Shipping & Packing List ........................ 1

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

General Information ............................ 3

Setting the Unit ................................ 3

Electrical ..................................... 3

Plumbing ..................................... 4

Flushing Existing Line Set and Indoor Coil ........ 4

Liquid & Suction Line Service Valves ............. 6

Leak Testing .................................. 7

Evacuation & Dehydration ...................... 7

Start-Up ...................................... 8

Charging ..................................... 8

System Operation ............................. 10

Maintenance .................................. 10

Start-Up & Performance Check List .............. 11

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

1 - Assembled HS40 condensing unit
1 - Bag assembly:

1 - Sight glass
1 - 5/16-3/8 inch adapter
1 - 45° elbow

1 - Expansion valve (approved for use with R407C)

1 - Drier (approved for use with R407C systems)
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.

Technical

WARNING

11/02

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIll

Page 1

A, WARNING

504,186M

IIlIIIIIIIIIIIIIIIIIIIIIIIHIIIIIIIIIIIII

INLET

©

AIR

INLET _AIR

OPTIONAL UNIT

INLET

©

AIR

SUCTION LINE

CONNECTION (162)

STAND-OFF KIT (4)_ "

(Field Installed)

COIL DRAIN OUTLETS_""_I

(Around perimeter of base)

(111)

/

INLET'_AIR

TOP VIEW

=_ C ,v

SIDE VIEW

HS40-018
HS40-024 mm 635 616 616

HS40-036
HS40-048 mm 838 819 616

HS40-065 mm 946 927 718

LIQUID LINECONNECTION

h._l

OUTDOOR

COIL FAN

COMPRESSOR

SUCTION &

LIQUID LINE

ELECTRICAL

INLETS

(19)

Model No, A B C

OPTIONAL UNIT

STAND-OFF KIT (4)_

(Field Installed) /

CONNECTION

(70)

TOP VIEW BASE SECTION

SIDE VIEW

Page 2

Theseinstructionsareintendedasageneralguideanddo
notsupersedenationalorlocalcodesinanyway,Authorities

havingjurisdictionshouldbeconsultedbeforeinstallation,
TheHS40unitis "CEmarked"inaccordancewiththere-
quirementsd the latest European Directives for Electrical

and Machinery Safety and Electromagnetic Compatibility. In
addition HS40 units have type Approval Certification with
the Gas Appliance Directive.

A - Slab Mounting
When installing the unit at grade level, install it on a level

slab that is high enough above the grade to allow water to
drain adequately. The top of slab should be located so run-

off water from higher ground will not collect around the unit,

B - Roof Mounting

Install the unit at a minimum of 101 mm above the roof's sur-
face. Ensure that the weight of the unit is properly distributed
over roof joists and rafters. Either redwood or steel supports

are recommended.

Refer to unit dimensions section for sizing mounting slab,
platforms or supports. Refer to figure 2 for installation clear-

ances.

Installation Clearances

(914 mm)

*NO TE - A service clearance of 30" (762 mm) must be main-

tained on one of the sides adjacent to the control box. Clear-
ance to one of the other three sides must be 36" (914 mm).

Clearance to one of the remaining two sides may be 12" (304
mm) and the final side may be 6" (152 mm).

NOTE - A clearance of 24" (610 mm) must be maintained
between two units.

NOTE - 48" (1219 mm) clearance required on top
of unit. Maximum soffit overhang is 36" (914 mm).

Figure 1

FIGURE 2

HS40 TYPICAL FIELD WIRING DIAGRAM

The wiring must conform with current local codes and the
current Canadian Electrical Code (CEC). Refer and comply

with local electrical codes for field wiring rules and regula-
tions.

Refer to the furnace or blower coil installation instructions for
additional wiring application diagrams and refer to unit rating

plate for minimum circuit ampacity and maximum overcur-
rent protection size.

WARNING

Line Voltage
To facilitate conduit, a hole is provided in the bottom of the

control box. Connect the conduit to the control box with the
proper conduit fitting,

NOTE- Units are approved for use with copper conductors

only,
24V, Class II Circuit

24V, Class II Circuit connections are made up in the low volt-
age junction box, Refer to figure 3 for the field wiring dia-
gram,

NOTE -A complete unit wiring diagram is located inside the
unit control box cover,

NOTE-SEE UNIT WIRING DIAGRAM

FOR POWER SUPPLY CONNECTIONS.

CONDENSING UNIT

Yellow

Black

NOTE-IF INDOOR UNIT IS NOT EQUIPPED WITH

BLOWER RELAY, IT MUST BE FIELD PROVIDED

AND INSTALLED (P-8-3251 OR EQUIVALENT)

'=_'= _124vLc_A_S It POWER SOURCE

ROOM THERMOSTAT

'

I

- 20 VA MINIMUM

Page 3

24V CLASS II INSTALLED AT FACTORY
24V CLASS It FIELD INSTALLED

TYPICAL INDOOR UNIT

TOHEATING

24V

CLASS II

JUNCTION

BOX

K3 INDOOR BLOWER RELAY

TRANSFORMER

TO

SPEED

TO I

HEATING

SPEED PER NATIONAL

GROUND

AND LOCAL

I CODES

FIGURE 3

IftheHS40unitisbeinginstalledwithanewindoorcoiland
lineset,theplumbingconnectionsshouldbemadeasout-
linedinthissection.Ifanexistinglinesetand/orindoorcoilis
goingtobeusedtocompletetheHS40system,refertothe
followingsectionwhichincludesflushingprocedures.

Fieldrefrigerantpipingconsistsofliquidandsuctionlines
fromthecondensingunittotheindoorevaporatorcoil.Use

LennoxL15serieslinesetsasshownintable1orusefield-
fabricatedrefrigerantlines.Referto RefrigerantPiping

Guide(Corp.9351-L9)forpropersize,type,andapplica-
tionoffield-fabricatedlines.

TABLE 1

REFRIGERANT LINE KITS

HS40 UNIT LIQUID SUCTION L15 LINE

LINE LINE SETS

HS40-018 5/16 in. 5/8 in.
HS40-024 (8 mm) (16 mm) (4.6 m - 15 m)

3/8 in. 3t4 in.

HS40-036 (10 mm) (19 mm) (4.6 m - 15 m)

318in. 7/8 in. 15-50 ft.

HS40-048 (10 mm) (22 mm) (4.6 m - 15 m)

318in. 1-1/8 in.

HS40-065 (10 mm) (29 mm) Fabricated

L15-21

15-50 ft.

L15-41

15-50 ft.

L15-65

Field

AWARNING

If refrigerant lines are routed through a wall, seal and iso-
late the opening so vibration is not transmitted to the build-

ing.
NOTE - Line length should be no greater than 15.2 m. Se-

lect line set diameters from table 1 to ensure oil return to the
compressor.

Brazing Connection Procedure

1 - The end of the refrigerant line must be cut square and its

internal shape must remain round. The line must be free
of nicks or dents and must be deburred (I.D. and O.D.)

2 - Before making line set connections, use dry nitrogen to

purge the refrigerant piping. This will help to prevent ox-
idation and the introduction d moisture into the system.

3 - Use silver alloy brazing rods (5 or 6 percent silver alloy

for copper-to-copper brazing or 45 percent silver alloy
for copper-to-brass or copper-to-steel brazing) which
are rated for use with R407C refrigerant. Wrap a wet
cloth around the valve body and the copper tube stub.

4 - Quench the joint with water or a wet cloth to prevent

heat damage to the valve core and opening port.

IMPORTANT - The tube end must stay bottomed in the
fitting during final assembly to ensure proper seating,
sealing and rigidity.

5-Install the provided thermal expansion valve (ap-

proved for use with R407C refrigerant) in the liquid line
at the indoor coil.

6 - Install the provided filter drier (approved for use with

R407C refrigerant) in the liquid line as close as pos-
sible to the expansion device. Do not leave the drier

uncapped for more than 10 to 15 minutes prior to
brazing, evacuation and leak testing.

7 - Install the sight glass on the liquid line at the outdoor

unit. Wrap the sight glass with a wet rag to protect it
during installation.

&WARNING

Plumbing Connections

HS40 Matched with New Indoor Coil and Line Set

If an existing indoor coil which was equipped with an
RFCI metering device is being replaced, the liquid line
must also be replaced prior to the installation of the

HS40 unit.

&IMPORTANT

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