Lennox XP14-018-230, XP14-024-230, XP14-030-230, XP14-036-230, XP14-042-230 Installation Instructions Manual
...
INSTALLATION
E2015 Lennox Industries Inc.
Dallas, Texas, USA
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
GENERAL
This XP14 outdoor heat pump is designed for use with
HFC-410A refrigerant only. This unit must be installed
with an approved indoor air handler or coil. See the Len
nox XP14 Product Specifications bulletin (EHB) for ap
proved indoor component match ups.
These instructions are intended as a general guide and
do not supersede local codes in any way. Consult authori
ties having jurisdiction before installation.
CAUTION
Before attempting to perform any service or mainte
nance, turn the electrical power to unit OFF at discon
nect switch.
INSTRUCTIONS
Elite® Series XP14 Units
HEAT PUMP
507362-01
8/2015
Supersedes 7/2014
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal in
jury or loss of life.
Installation and service must be performed by a li
censed professional installer (or equivalent) or service
agency.
NOTICE !
Charging information is given on the charging pro
cedure sticker on the unit access panel. For more
in-depth information, consult the Installation and
Service Procedures manual, available as Corp.
0721-L7 on DaveNet or through the Technical Sup
port department at 800-453-6669.
Litho U.S.A.
STEP 1 -- SETTING THE UNIT -- Clearances
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. (305mm)
and the final side may be 6 in.(152 mm).
A clearance of 24 in. (610 mm) must be maintained between two units.
48 in. (1219 mm) clearance required on top of unit.
FIGURE 1
See
NOTES
See NOTES
See NOTES
See
NOTES
Control
Box
Page 1
UNIT DIMENSIONS - INCHES (MM)
A
LIQUID LINE
CONNECTION
ELECTRICAL INLETS
SUCTION LINE
CONNECTION
C
4-1/2”
(108)
SIDE VIEW
Model Number A B C
XP14-018-230 39 (991)
XP14-024-230 39 (991)
XP14-030-230 39 (991)
XP14-036-230 35 (889)
XP14-042-230 39 (991)
XP14-048-230 39 (991)
XP14-060-230 45 (1143)
UNIT SUPPORT FEET
13-7/8
(352)
7-3/4
(197)
3-1/4
(83)
27-1/8
(689)
XP14-018 AND -036 BASE WITH
ELONGATED LEGS (MEDIUM)
4-3/4”
(121)
UNIT SUPPORT FEET
20-5/8
K
(524)
4-1/2
J
(114)
3-5/8
(92)
B
TOP VIEW
30-1/2 (775) 35 (889)
35-1/2 (902) 39-1/2 (1003)
16-7/8
(429)
8-3/4
(222)
3-1/8
(79)
30-3/4
(781)
XP14-042 TO -060 BASE WITH
ELONGATED LEGS (LARGE)
26-7/8
(683)
3-3/4
(95)
4-5/8
(117)
STEP 1 -- SETTING THE UNIT
(Continued) -- Unit Placement
NOTICE !
Roof Damage!
This system contains both refrigerant and oil.
Some rubber roofing material may absorb oil,
causing the rubber to degrade. Failure to follow
this notice could result in damage to roof surface.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment.
WARNING
To prevent personal injury, as well as damage to panels,
unit or structure, observe the following:
While installing or servicing this unit, carefully stow all
removed panels so that the panels will not cause injury
to personnel, objects or nearby structures. Also, take
care to store panels where they will not be subject to
damage (e.g., being bent or scratched).
While handling or stowing the panels, consider any
weather conditions (especially wind) that may cause
panels to be blown around and damaged.
Page 2
XP14 SERIES
IMPORTANT !
Exhaust vents from dryers, water heaters and
furnaces should be directed away from the outdoor
unit. Prolonged exposure to exhaust gases and the
chemicals contained within them may cause
condensation to form on the steel cabinet and other
metal components of the outdoor unit. This will
diminish unit performance and longevity.
PLACEMENT
INSTALL UNIT AWAY FROM WINDOWS.
TWO 90° ELBOWS INSTALLED IN LINE SET
WILL REDUCE LINE SET VIBRATION.
FIGURE 2
SLAB MOUNTING
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
ELEVATED SLAB MOUNTING USING FEET
EXTENDERS
2” (50.8MM) SCH 40
FEMALE THREADED
ADAPTER
2” (50.8MM)
SCH 40 MALE
THREADED
ADAPTER
LEG DETAIL
Use additional 2” SCH 40 male
threaded adapters which can
be threaded into the female
threaded adapters to make
additional adjustments to level
the unit.
BASE
FIGURE 4
STABILIZING UNIT ON UNEVEN SURFACES
#10 X 1/2” LONG
SELF-TAPPING
SHEET METAL
SCREWS
STABILIZING BRACKET
(18 GAUGE METAL — 2”
WIDTH; HEIGHT AS
REQUIRED)
#10 X 1-1/4” LONG
HEX HD SCREW AND
FLAT WASHER
Concrete slab — use two
plastic anchors (hole drill 1/4”)
CORNER POST
COIL
BASE PAN
MOUNTING
SLAB
GROUND LEVEL
FIGURE 3
IMPORTANT !
This model is designed for use in check / expan
sion valve systems only. An indoor expansion
valve approved for use with HFC-410A refrigerant
must be ordered separately and installed prior to
operating the system.
! IMPORTANT !
Unit Stabilizer Bracket Use
(field-provided):
Always use stabilizers when unit is raised
above the factory height.
(Elevated units could become unstable in
gusty wind conditions.)
Stabilizers may be used on any unit installed
on unstable and uneven surfaces.
FIGURE 5
Page 3
XP14 SERIES
STEP 2 -- REFRIGERANT PIPING
IMPORTANT !
If this unit is being matched with an approved line
set or indoor unit coil that was previously charged
with mineral oil, or if it is being matched with a coil
which was manufactured before January of 1999,
the coil and line set must be flushed prior to instal
lation. Take care to empty all existing traps. Polyol
ester (POE) oils are used in Lennox units charged
with HFC-410A refrigerant. Residual mineral oil can
act as an insulator, preventing proper heat transfer.
It can also clog the expansion device and reduce
system performance and capacity.
Failure to properly flush the system per this in
struction and the detailed Installation and Service
Procedures manual will void the warranty.
WARNING
When using a high pressure gas such as
nitrogen to pressurize a refrigeration or
air conditioning system, use a regulator
that can control the pressure down to 1 or
2 psig (6.9 to 13.8 kPa).
WARNING
Refrigerant can be harmful if it is inhaled. Refrigerant
must be used and recovered responsibly.
Failure to follow this warning may result in personal
injury or death.
Flush the existing line set per the following instruc
tions. For more information, refer to the Installation
and Service Procedures manual available on Dave
Net. CAUTION - DO NOT attempt to flush and re-use
existing line sets or indoor coil when the system con
tains contaminants (i.e., compressor burn out).
If a new line set is being installed, size the piping per table 1.
TABLE 1
REFRIGERANT LINE SET — INCHES (MM)
Valve Field Con
Model
-018
-024
-030
-036
-042
-048
-060
NOTE - Some applications may require a field-provided 7/8” to 1-1/8”
adapter
nections
Liquid
Line
3/8 in.
(10 mm)
3/8 in.
(10 mm)
3/8 in.
(10 mm)
Vapor
Line
3/4 in.
(19 mm)
7/8 in.
(22 mm)
7/8 in.
(22 mm)
Recommended Line Set
Liquid
Line
3/8 in.
(10 mm)
3/8 in.
(10 mm)
3/8 in.
(10 mm)
Vapor
Line
3/4 in.
(19 mm)
7/8 in.
(22 mm)
7/8 in.
(29 mm)
L15 Line Sets
L15-41
15 ft. - 50 ft.
(4.6 m - 15 m)
L15-65
15 ft. - 50 ft.
(4.6 m - 15 m)
Field-Fabricated
NOTE - When installing refrigerant lines longer than 50
feet, refer to the Refrigerant Piping Design and Fabrica
tion Guidelines manual available on DaveNet (Corp.
9351-L9), or contact the Technical Support Department
Product Application group for assistance.
NOTE - For new or replacement line set installation, refer
to Service and Application Note - Corp. 9112-L4 (C-91-4).
WARNING
Fire, Explosion and Personal Safety Haz
ard. Failure to follow this warning could
result in damage, personal injury or
death.
Never use oxygen to pressurize or purge
refrigeration lines. Oxygen, when ex
posed to a spark or open flame, can
cause fire and/or an explosion, that could
result in property damage, personal injury
or death.
WARNING
Polyol ester (POE) oils used with HFC-410A
refrigerant absorb moisture very quickly. It is very
important that the refrigerant system be kept closed
as much as possible. DO NOT remove line set caps
or service valve stub caps until you are ready to
make connections.
IMPORTANT !
Some scroll compressors have an internal vacuum
protector that will unload scrolls when suction
pressure goes below 20 psig. A hissing sound will
be heard when the compressor is running un
loaded. Protector will reset when low pressure in
system is raised above 40 psig. DO NOT REPLACE
COMPRESSOR.
Page 4
XP14 SERIES
STEP 2 -- REFRIGERANT PIPING -- (Continued)
TYPICAL EXISTING FIXED ORIFICE
1A
DISTRIBUTOR
ASSEMBLY
A - On fully cased coils, remove the coil access and plumbing panels.
B - Remove any shipping clamps from the liquid line and distributor as
sembly.
C - Using two wrenches, disconnect liquid line from liquid line orifice hous
ing. Take care not to twist or damage distributor tubes during this pro
cess.
D - Remove and discard fixed orifice, valve stem assembly (if present)
and Teflon® washer as illustrated above.
E - Use a field-provided fitting to temporarily reconnect the liquid line to the
indoor unit's liquid line orifice housing.
(UNCASED COIL SHOWN)
DISTRIBUTOR TUBES
LIQUID LINE ORIFICE HOUSING
TEFLON® RING
FIXED ORIFICE
REMOVE AND DISCARD
WHITE TEFLON
(IF PRESENT)
®
SEAL
LIQUID LINE ASSEMBLY
(INCLUDES STRAINER)
REMOVAL PROCEDURE
OR
BRASS NUT
1B
TWO-PIECE PATCH PLATE
(UNCASED COIL ONLY)
CONNECT GAUGES AND EQUIPMENT FOR
FLUSHING PROCEDURE
2
VAPOR LINE
SERVICE VALVE
EXISTING
INDOOR
UNIT
LIQUID LINE SERVICE
VALV E
RECOVERY
CYLINDER
LIQUID
D
A - HCFC-22 cylinder with clean refrigerant (positioned to deliver liquid
refrigerant) to the vapor service valve.
B - HCFC-22 gauge set (low side) to the liquid line valve.
C - HCFC-22 gauge set center port to inlet on the recovery machine with an
empty recovery tank connected to the gauge set.
D - Connect recovery tank to recovery machine per machine instructions.
CYLINDER CONTAINING
CLEAN HCFC-22 TO BE
USED FOR FLUSHING
(Positioned to deliver liquid
refrigerant)
A
1
B
VAPOR
NEW
OUTDOOR
UNIT
C
GAUGE
MANIFOLD
LOW HIGH
OPENED
TANK
RETURN
INLET
DISCHARGE
RECOVERY MACHINE
CLOSED
TYPICAL EXISTING EXPANSION VALVE REMOVAL
PROCEDURE (UNCASED COIL SHOWN)
ORIFICE
HOUSING
EQUALIZER
LINE
STUB END
TEFLON
RING
VAPOR
CHECK
EXPANSION
VALV E
®
LIQUID LINE
ASSEMBLY WITH
BRASS NUT
LINE
TEFLON
RING
SENSING
LIQUID LINE
DISTRIBUTOR
TUBES
DISTRIBUTOR
ASSEMBLY
MALE EQUALIZER
LINE FITTING
SENSING BULB
A - On fully cased coils, remove the coil access and plumbing panels.
B - Remove any shipping clamps from the liquid line and distributor
assembly.
C - Disconnect the equalizer line from the check expansion valve
equalizer line fitting on the vapor line.
D - Remove the vapor line sensing bulb.
E - Disconnect the liquid line from the check expansion valve at the
liquid line assembly.
F - Disconnect the check expansion valve from the liquid line orifice
housing. Take care not to twist or damage distributor tubes during
this process.
G - Remove and discard check expansion valve and the two Teflon
rings.
H - Use a field-provided fitting to temporarily reconnect the liquid line to
the indoor unit's liquid line orifice housing.
FLUSHING LINE SET
The line set and indoor unit coil must be flushed with at least the same
3
amount of clean refrigerant that previously charged the system. Check
the charge in the flushing cylinder before proceeding.
A - Set the recovery machine for liquid recovery and start the recovery
machine. Open the gauge set valves to allow the recovery
machine to pull a vacuum on the existing system line set and indoor
unit coil.
B - Position the cylinder of clean HCFC-22 for delivery of liquid
C - After all of the liquid refrigerant has been recovered, switch the
D - Close the valve on the inverted HCFC-22 drum and the gauge set
B
refrigerant and open its valve to allow liquid refrigerant to flow into
the system through the vapor line valve. Allow the refrigerant to
pass from the cylinder and through the line set and the indoor unit
coil before it enters the recovery machine.
recovery machine to vapor recovery so that all of the HCFC-22
vapor is recovered. Allow the recovery machine to pull the system
down to 0.
valves. Pump the remaining refrigerant out of the recovery
machine and turn the machine off.
®
LINE
LIQUID
LINE
®
FIGURE 6
Page 5
XP14 SERIES
STEP 2 -- REFRIGERANT PIPING -- Brazing Procedures
CUT AND DEBUR
Cut ends of the refrigerant lines square (free from nicks or dents)
1
and debur the ends. The pipe must remain round. Do not crimp end
of the line.
CUT AND DEBUR
LINE SET SIZE MATCHES
SERVICE VALVE CONNECTION
SERVICE VALVE
COPPER TUBE
REDUCER
CONNECTION
STUB
LINE SET SIZE IS SMALLER
THAN CONNECTION
REFRIGERANT LINE
DO NOT CRIMP SERVICE VALVE
CONNECTOR WHEN PIPE IS
SMALLER THAN CONNECTION
CAP AND CORE REMOVAL
Remove service cap and core from
2
both the vapor and liquid line service
ports.
SERVICE PORT
CAP
SERVICE
PORT
CORE
LIQUID LINE SERVICE
VALV E
VAPOR LINE SERVICE
VALV E
ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND VAPOR LINE SERVICE VALVES
3
Flow regulated nitrogen (at 1 to 2 psig) through the low-side refrigeration gauge set into the liquid line service port valve, and out of the
vapor line service port valve.
A - Connect gauge set low pressure side to
liquid line service valve (service port).
B - Connect gauge set center port to bottle of
nitrogen with regulator.
C - Remove core from valve in vapor line
service port to allow nitrogen to escape.
ATTACH
GAUGES
HIGHLOW
USE REGULATOR TO FLOW
NITROGEN AT 1 TO 2 PSIG.
SERVICE
PORT
CORE
SERVICE
PORT CAP
VAPOR SERVICE PORT MUST BE OPEN
TO ALLOW EXIT POINT FOR NITROGEN
VAPOR LINE
INDOOR
UNIT
LIQUID LINE
C
LIQUID LINE SERVICE
CAUTION
Brazing alloys and flux contain materials which are
hazardous to your health.
Avoid breathing vapors or fumes from brazing
operations. Perform operations only in well-ventilated
areas.
Wear gloves and protective goggles or face shield to
protect against burns.
Wash hands with soap and water after handling brazing
alloys and flux.
VAPOR LINE
SERVICE
VALV E
VALV E
FIGURE 7
B
OUTDOOR
UNIT
WHEN BRAZING LINE SET TO
A
SERVICE VALVES, POINT FLAME
AWAY FROM SERVICE VALVE.
Danger of fire. Bleeding the refrigerant
charge from only the high side may
result in pressurization of the low side
shell and suction tubing. Application of
a brazing torch to a pressurized system
may result in ignition of the refrigerant
and oil mixture. Check the high and low
pressures before applying heat.
NITROGEN
WARNING
Page 6
XP14 SERIES
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