Lennox LPH036-160P434 Operating manual

Rooftop Package Unit
Thank you for selecting LENNOX air conditioners.Please read this
manual carefully before operation and keep it for further reference.
User and Installation MANUAL
LENNOX AIR CONDITIONERS
MODEL:
LPH036-160P434
LPH048-160P434
LPH060-160P434

Contents
1 1………………………………………………………………ACCESSORIES
………………………………………………………2 1GENERAL INFORMATION
…………………………………………………………3 DIMENSIONAL DATA 3
………………………………………… 54 LOCATIONS AND RECOMMENDATIOS
…………………………………………………………………5 INSTALLATION 6
………………………………………………………… 96 ELECTRICAL WIRING
………………………………………………………………7 SPECIFICATION 15
- …………………………………………………………………… 278STARTUP
9 MAINTENANCE AND UPKEEP
……………………………………………… 28

1. ACCESSORIES
2. GENERAL INFORMATION
Tab.1-1
Warning and Cautions appear at appropriate locations throughout this manual.s
Read these carefully.
WARNING: Indicates a potentially hazardous situation which,if not avoided,could result in
death or serious injury.
CAUTION:Indicates a potentially hazardous situation which,if not avoided,may result in minor
or moderate injury.It may also be used to alert against unsafe practices and where property-
damage-only accidents could occur.
Notice
!
Warning
!
lAsk your dealer for installation of the air conditioner. Incomplete installation performed by
yourself may result in a water leakage, electric shock, and fire.
lAsk your dealer for improvement, repair, and maintenance.
lIncomplete improvement, repair, and maintenance may result in a water leakage, electric
shock, and fire.
lIn order to avoid electric shock, fire or injury, or if you detect any abnormality such as smell of
fire, turn off the power supply and call your dealer for instructions.
lNever replace a fuse with that of wrong rated current or other wires when a fuse blows out. Use
of wire or copper wire may cause the unit to break down or cause a fire.
lDo not insert fingers, rods or other objects into the air inlet or outlet.
lWhen the fan is rotating at high speed, it will cause injury.
lNever use a flammable spray such as hair spray, lacquer or paint near the unit. It may cause a
fire.
lNever inspect or service the unit by yourself. Ask a qualified service person to perform this
work.
lKeep far away from high-frequency equipment.
lKeep away from the following places: A place where it is full of oil, gas; places where salty air
surrounding(near the coast); and a place where is caustic gas(the sulfide in hotspring).
Location in above places may cause malfunction or shorten the life span of the manchine.
1
lRead this entire manual before beginning installation procedures.
lBodily injury can result from high voltage electrical components, fast moving fans. For
protection from these inherent hazards during installation and servicing, the electrical supply
must be disconnected.
lIf operating checks must be performed with the unit operating, it is the technicians
responsibility to recognize these hazards and proceed safely.
Name of accessories Qty Shape
Manual 1
Drain pipe 1
Snap ring 1
Drain joint 1

lIn the cace of extremely strong wind, please prevent the air from flowing backwards into the
outdoor unit.
lSnow canopy is necessary in sonwfall places on the outdoor unit. Please consult the local
dealer for details.
lIn the frequent thunderstruck place, lightning proof actions should be taken.
lTo prevent refrigerant leak, contact your dealer. When the system is installed and runs in a
small room, it is required to keep the concentration of the refrigerant, if by any chance coming
out, below the limit. Otherwise, oxygen in the room may be affected, resulting in a serious
accident.
lThe refrigerant in the air conditioner is safe and normally does not leak. If the refrigerant leaks
in the room, contact with a fire of a burner, a heater or a cooker may result in a harmful gas.
lTurn off any combustible heating devices, ventilate the room, and contact the dealer where you
purchased the unit. Do not use the air conditioner until a service person confirms that the
portion where the refrigerant leaks is repaired.
lIf the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a
similarly qualified person in order to avoid a hazard.
lThe temperature of refrigerant circuit will be high, please keep the interconnection cable away
from the copper tube.
lThis appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.Children should be supervised to ensure that they do not play with the appliance.
lThat the appliance shall be installed in accordance with national wiring regulations.
lThe inverter rooftop units will blow cold wind during heating for a short time since the machine is in
the defrosting mode. And the normal heating mode will restore after the defrosting is completed.
Warning
!
2

3
3. DIMENSIONAL DATA
l3Tons C O Units Hor/(.)
Fig 3 1.-
l3Tons H Units Hor/(.)P

4
l4\5Tons C O Units Hor/(.)
Fig 3 2.-
l4\5Tons H P Units Hor/(.)

5
4. LOCATIONS AND RECOMMENDATIONS
4.1 Horizotal airflow application
4.2 Clearances
lThe recommended clearances for single-unit installations are illustrated in Fig.4-1
lThese minimum requirements are not only an important consideration when determining unit
placement, but they are also essential to ensure adequate serviceability, maximum capacity,
and peak operating efficiency.
lAny reduction of the unit clearances indicated in these illustrations may result in condenser coil
starvation or the recirculation of warm condenser air. Actual clearances which appear to be
inadequate should be reviewed with a local engineer.
lSee the unit's nameplate for the absolute minimum clearance between the unit and any
combustible surface s .()
lThese units are design certified for outdoor installations. These units may be installed directly
on wood flooring or on Class A, Class B, or Class C roof covering material.
lLocation of the unit must allow service clearance around it. Clearance of the unit must be given
careful consideration.
lCheck the handling facilities to ensure the safety of personnel and the unit(s).
lCaution must be taken at all times to avoid Personal injuries and/or damage to equipment.
lThe unit must be mounted level for proper drainage of water through the holes in the base pan.
lThe unit must not be exposed to direct roof water runoff.
lFlexible duct connectors must be of a flame retardant material. All duct work outside of the
structure must be insulated and weatherproofed in accordance with local codes.
lHoles through exterior walls must be sealed in accordance with local codes.
lAll fabricated outdoor ducts should be as short as possible.
Fig 4 1.-

6
5. INSTALLATION
5 1 Lifting.
lRigging cables should have adequate capability to resist 3 times weight of unit. Before lift,
please check and ensure that hooks are holding tightly to unit and lifting angles are no less
than 60°.
lCloth material or hard-paper should be padded in the contact place between unit and rigging
cable. Rigging cable should be entwined a round at the hook for prevent danger by cable slip
because of weight unbalance.
lDuring lifting, anyone forbidden lingering under the lifting unit.
5 2 Rooftop units.-
lFor roof top applications using a field fabricated frame and ducts, use the following procedure:
lThe frame must be located and secured by bolting or welding to the roof. Flashing is required.
lThe hole in the roof must be prepared in advance of installing the unit.
lSecure the ducts to the roof.
lPlace the unit on the frame or roof curb.
lSecure the unit to the frame or roof curb.
lInsulate any ductwork outside of the structure with at least two (2) inches of insulation and then
weatherproof. There must be a weatherproof seal where the duct enters the structure.
lComplete the installation according to the instructions in the following sections of this manual.
Fig 5 1.-
Fig 5 2.-
Typical rooftop application with frame

7
5 3 Ground level horizontal units.-
lFor ground level installations, the unit should be positioned on a pad in the size of the unit or
larger. The unit must be level on the pad. The pad must not come in contact with the structure.
Be sure the outdoor portion of the supply and return air ducts are as short as possible.
lProceed with the installation as follows:
lPlace the unit on the pad.
lAttach the supply and return air ducts to the unit.
lInsulate any ductwork outside of the structure with at least 2 inches of insulation and
weatherproof. There must be a weatherproof seal where the duct enters the structure.
lComplete the installation according to the instructions in the following sections of this manual.
5.4 Condensate drain piping
Fig 5 3.-
Fig 5 4.-
Typical ground level application

6
8
Fig 5 5.-
5 5 Ductwork.
lAttaching horizontal ductwork to unit
lAll conditioned air ductwork should be insulated to minimize heating and cooling duct losses.
Use a minimum of two (2) inches of insulation with a vapor barrier. The outside ductwork
lmust be weatherproofed between the unit and the building.
lWhen attaching ductwork to a horizontal unit, provide a flexible watertight connection to
NOTE
Do not draw the canvas taut between the solid ducts.