Panasonic U-26PE1U6, U-36PE1U6, U-42PE1U6, U-26PS1U6, U-36PS1U6 installation

INSTALLATION INSTRUCTIONS

Split System Air Conditioner

This air conditioner uses the refrigerant R410A.

NOTE External diameter of service port R410A: 5/16"

Model No.

Outdoor Units

	Type	Outdoor Unit Type	26	36	42	Remarks
			U-26PE1U6	U-36PE1U6	U-42PE1U6	Cooling/Heating
	U	Single
			U-26PS1U6	U-36PS1U6	U-42PS1U6	Cooling

Indoor Units

Type	Indoor Unit Type	26	36	42	Remarks
U1	4-Way Cassette	S-26PU1U6	S-36PU1U6	S-42PU1U6	with Wired Remote Controller: CZ-RTC2
K1	Wall Mounted	S-26PK1U6			with Wireless Remote Controller: CZ-RWSK1U
T1	Ceiling	S-26PT1U6	S-36PT1U6	S-42PT1U6	with Wired Remote Controller: CZ-RTC2
F1	Low Silhouette Duct	S-26PF1U6	S-36PF1U6		with Wired Remote Controller: CZ-RTC2

Remote Controllers

Timer Wired Remote Controller	CZ-RTC2	Timer Wired Remote Controller comes with Instructions Manual.
	CZ-RWSU1U	for U1 and T1 type Indoor units
Wireless Remote Controller	CZ-RWSC1U	for F1 type Indoor units
	CZ-RWSK1U	for K1 type Indoor units

Units should be installed by licensed contractor according to local code requirements.

85464369531020

CV6233186979

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IMPORTANT!

Please Read Before Starting

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

For safe installation and trouble-free operation, you must:

Carefully read this instruction booklet before beginning.

Follow each installation or repair step exactly as shown.

Observe all local, state, and national electrical codes.

Pay close attention to all warning and caution notices given in this manual.

This symbol refers to a hazard or

WARNING

unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or

unsafe practice which can result CAUTION in personal injury or product or

property damage.

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

WARNING When Wiring

ELECTRICAL SHOCK CAN CAUSE

SEVERE PERSONAL INJURY OR DEATH.

ONLY A QUALIFIED, EXPERIENCED

ELECTRICIAN SHOULD ATTEMPT TO

WIRE THIS SYSTEM.

•Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.

•Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

•Ground the unit following local electrical codes.

•Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.

•To prevent possible hazards from insulation failure,

the unit must be grounded.

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

When Installing…

Select an installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.

CAUTION Keep the fire alarm and the air outlet at least 5 feet away from the unit.

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

When Connecting Refrigerant Tubing

•Ventilate the room well, in the event that is refrigerant gas leaks during the installation. Be careful not to allow contact of the refrigerant gas with a flame as this will cause the generation of poisonous gas.

•Keep all tubing runs as short as possible.

•Use the flare method for connecting tubing.

•Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

•Check carefully for leaks before starting the test run.

	• When performing piping work do not
	mix air except for specifled refrigerant
WARNING	(R410A) in refrigeration cycle. It
	causes capacity down, and risk of
	explosion and injury due to high
	tension inside the refrigerant cycle.

•Refrigerant gas leakage may cause fire.

•Do not add or replace refrigerant other than specified type.

It may cause product damage, burst and injury etc.

•Do not leak refrigerant while piping work for an installation or re-installation, and while repairing refrigeration parts. Handle liquid refrigerant carefully as it may cause frostbite.

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When Servicing

•Turn the power OFF at the main power box (mains) before opening the unit to check or repair electrical parts and wiring.

•Keep your fingers and clothing away from any moving parts.

•Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

	•	Do not clean inside the indoor and
WARNING
		outdoor units by users. Engage
		authorized dealer or specialist for
		cleaning.
	•	In case of malfunction of this
		appliance, do not repair by yourself.
		Contact to the sales dealer or service
		dealer for a repair.

CAUTION

Others

• Do not touch the air inlet or the sharp aluminum fins of the outdoor unit. You may get injured.

•Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.

•Confirm after installation that no refrigerant gas is leaking. If the gas comes in contact with a burning stove, gas water heater, electric room heater or other heat source, it can cause the generation of poisonous gas.

	• Do not touch the air inlet or the
CAUTION	sharp aluminum fins of the
	outdoor unit. You may get injured.

• Do not sit or step on the unit, you may fall down accidentally.

• Do not stick any object into the FAN CASE.

You may be injured and the unit may be damaged.

Check of Density Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit.

The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its density should rise excessively. Suffocation from leakage of refrigerant is almost non-existent. With the recent increase in the number of high density buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power, etc.

Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a single unit of the multi air conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit (and in the event of an emergency, measures can be made before injury can occur).

ASHRAE and the International Mechanical Code of the ICC as well as CSA provide guidance and define safeguards related to the use of refrigerants, all of which define a Refrigerant Concentration Level (RCL) of 25 pounds

per 1,000 cubic feet for R410A refrigerant.

For additional guidance and precautions related to refrigerant safety, please refer to the following documents:

International Mechanical Code 2009 (IMC-2009) (or more recently revised)

ASHRAE 15

ASHRAE 34

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Precautions for Installation Using New Refrigerant

1. Care regarding tubing

1-1. Process tubing

Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless Pipes and Tubes.”

Tubing size: Be sure to use the sizes indicated in the table below.

Use a tube cutter when cutting the tubing, and be sure to remove any fl ash. This also applies to distribution joints (optional).

When bending tubing ø5/8" or smaller, use a bending radius that is 4 times the outer diameter of the tubing or larger.

Use sufficient care in handling the tubing. Seal the tubing ends with CAUTION caps or tape to prevent dirt, moisture, or other foreign substances

from entering. These substances can result in system malfunction.

						Unit: inch
Material				O
Copper tube	Outer diameter	1/4	3/8		1/2	5/8
	Wall thickness	t0.032	t0.032		t0.032	t0.04

1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A refrigerant deterioration and compressor defects. Due to the features of the refrigerant and refrigerating machine oil, the prevention of water and other impurities becomes more important than ever.

2. Be sure to recharge the refrigerant only in liquid form.

2-1. Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause defects of the unit.

2-2. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining refrigerant and recharge the required total amount of new refrigerant after fi xing the leak.

3. Different tools required

3-1. Tool specifi cations have been changed due to the characteristics of R410A. Some tools for R22and R407C-type refrigerant systems cannot be used.

		New	R407C tools
	Item		compatible	Remarks
		tool?
			with R410A?
	Manifold gauge	Yes	No	Types of refrigerant, refrigerating machine oil, and
				pressure gauge are different.
	Charge hose	Yes	No	To resist higher pressure, material must be changed.
	Vacuum pump	Yes	Yes	Use a conventional vacuum pump if it is equipped
				with a check valve. If it has no check valve,
				purchase and attach a vacuum pump adapter.
	Leak detector	Yes	No	Leak detectors for CFC and HCFC that
				react to chlorine do not function because
				R410A contains no chlorine. Leak detector
				for HFC134a can be used for R410A.
	Flaring oil	Yes	No	For systems that use R22, apply mineral oil (Suniso oil)
				to the fl are nuts on the tubing to prevent refrigerant
				leakage. For machines that use R407C or R410A, apply
				synthetic oil (ether oil) to the fl are nuts.

* Using tools for R22 and R407C and new tools for R410A together can cause defects.

Manifold gauge

Vacuum pump

Outlet

Inlet

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3-2. Use R410A exclusive cylinder only.

When charging with a refrigerant cylinder, use an electronic scale for charging refrigerant. In this case, if the volume of refrigerant in the cylinder becomes less than 20% of the fully-charged amount, the composition of the refrigerant starts to change. Thus, do not use the refrigerant if the amount in the charging cylinder is less than 20%. Also, charge the minimum necessary amount to the charging cylinder before using it to charge the air conditioning unit.

Configuration and characteristics of cylinders

Valve

Liquid

Single valve

Charge liquid refrigerant with cylinder in up-side-down position.

Fig. 1

Valve

Liquid

Single valve (with siphon tube)

Charge with cylinder in normal position.

Fig. 2

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CONTENTS

Page

IMPORTANT!. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Please Read Before Starting Check of Density Limit

Precautions for Installation Using New Refrigerant

1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-1. Tools Required for Installation (not supplied) 1-2. Type of Copper Tube and Insulation Material 1-3. Additional Materials Required for Installation 1-4. Tubing Size

2. SELECTING THE INSTALLATION SITE . . . . . . . . . . 11

2-1. Outdoor Unit

2-2. Air-Discharge Chamber for Top Discharge 2-3. Installing the Unit in Heavy Snow Areas 2-4. Precautions for Installation in Heavy Snow

Areas

2-5. Dimensions of Wind Ducting

2-6. Dimensions of Snow Ducting

3. HOW TO INSTALL THE OUTDOOR UNIT . . . . . . . . 20

3-1. Installing the Outdoor Unit

3-2. Drainage Work

3-3. Routing the Tubing and Wiring

4. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . 21

4-1. General Precautions on Wiring

4-2. Recommended Wire Length and Wire Diameter for Power Supply System

4-3. Wiring System Diagrams

4-4. How to Connect Wiring to the Terminal

5. HOW TO INSTALL THE TIMER WIRED REMOTE CONTROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

NOTE

Refer to the Instruction Manual attached to the Timer Remote Controller.

Page

6.HOW TO PROCESS TUBING . . . . . . . . . . . . . . . . . . . 24

6-1. Connecting the Refrigerant Tubing

6-2. Connecting Tubing between Indoor and Outdoor Units

6-3. Insulating the Refrigerant Tubing

6-4. Taping the Tubes

6-5. Finishing the Installation

7.LEAK TEST, EVACUATION AND ADDITIONAL REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . . . 28

7-1. Leak Test

7-2. Evacuation

7-3. Charging Additional Refrigerant

7-4. Finishing the Job

8.TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8-1. Preparing for Test Run

8-2. Caution

8-3. Test Run Procedure

8-4. Items to Check Before the Test Run 8-5. Test Run Using the Remote Controller 8-6. Precautions

8-7. Table of Self-Diagnostic Functions and Corrections 8-8. Examples of Wiring Diagrams

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1. GENERAL

This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.

1-1. Tools Required for Installation (not supplied)

1.Flathead screwdriver

2.Phillips head screwdriver

3.Knife or wire stripper

4.Tape measure

5.Level

6.Sabre saw or key hole saw

7.Hacksaw

8.Core bits

9.Hammer

10.Drill

11.Tube cutter

12.Tube fl aring tool

13.Torque wrench

14.Adjustable wrench

15.Reamer (for deburring)

1-2. Type of Copper Tube and Insulation Material

Copper tubing for connecting the outdoor unit to the indoor unit is available in kits which contain the liquid and gas tubing, fi ttings and insulation. Consult your nearest sales outlet or A/C workshop.

If you wish to purchase these materials separately from a local source, you will need:

1.Deoxidized annealed copper tube for refrigerant tubing.

2.Foamed polyethylene insulation for copper tubes as required to precise length of tubing.

Wall thickness of the insulation should be not less than 5/16 in.

3.Use insulated copper wire for fi eld wiring. Wire size varies with the total length of wiring. Refer to Section 4. “Electrical Wiring” for details.

	CAUTION	Check local electrical codes
		and regulations before
		obtaining wire. Also, check
		any specified instructions or
		limitations.

1-3. Additional Materials Required for Installation

1.Refrigeration (armored) tape

2.Insulated staples or clamps for connecting wire (See your local codes.)

3.Putty

4.Refrigeration tubing lubricant

5.Clamps or saddles to secure refrigerant tubing

6.Scale for weighing

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1-4. Tubing Size

Single type

Refrigerant tubing between the indoor and outdoor units should be kept as short as possible.

The length of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference between the 2 units. During tubing work, try to make both the tubing length (L) and the difference in elevation (H1) as short as possible. Refer to Table 1-2.

Single

Main tubing L	H1

Table 1-1

Indoor unit type

26, 36 types

42 type

Maximum length

165 ft.

165 ft.

Charge-less tubing length (actual length)

10 – 100 ft.

15 – 100 ft.

Additional charge per 1 ft.

0.43 oz.

Maximum indoor-outdoor

If outdoor unit is higher

H1

100

height difference

If outdoor unit is lower

H1

50

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Table 1-2 Tubing Data for Models

	Tubing Data				Models	U-26PE1U6	U-36PE1U6	U-42PE1U6
						U-26PS1U6	U-36PS1U6	U-42PS1U6
	Tubing size	Liquid tube			in. (mm)	3/8 (9.52)	3/8 (9.52)	3/8 (9.52)
	outer diameter	Gas tube			in. (mm)	5/8 (15.88)	5/8 (15.88)	5/8 (15.88)
	Limit of tubing length				(ft.)	165	165	165
		Outdoor unit is placed				100	100	100
	Limit of elevation	higher.			(ft.)
	difference between
		Outdoor unit is placed
	the 2 units					50	50	50
		lower.			(ft.)
	Max. allowable tubing length at shipment				(ft.)	10 – 100	10 – 100	10 – 100
	Required additional refrigerant *1				(oz./ft.)	a) 0.43	b) 0.43	b) 0.43
	Refrigerant charged at shipment				(lbs.)	4.2	6.2	7.9
	No additional charge of compressor oil is necessary.
	*1 If total tubing length becomes 100 to 165 ft., charge additional refrigerant by 0.43 oz./ft.
	Table 1-3 List of Connection Tube Sizes
			Main tubing (L)
	Type capacity of indoor units			26 – 42
	Gas tube				ø5/8"
	Liquid tube				ø3/8"
	Amount of additional charge per 1 ft.			0.43 oz.

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CAUTION

WARNING

1. This unit requires no additional refrigerant charge up to 100 ft. tubing length.

In case of more than 100 ft., additional refrigerant charge is required. Refer to Table 1-3.

2.In case of multi type installation, indoor units should be installed within the same room. If multi type indoor units are installed in different rooms, temperature control may develop problems because thermostat operation must follow the thermostat condition of 1 indoor unit only (the main unit).

Always check the gas density for the room in which the unit is installed.

Check of density limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit.

The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its density should rise excessively. Suffocation from leakage of

refrigerant is almost non-existent.

With the recent increase in the number of high density buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power, etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a single unit of the multi air conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit (and in the event of an emergency, measures can be made before injury can occur).

ASHRAE and the International Mechanical Code of the ICC as well as CSA provide guidance and defi ne

safeguards related to the use of refrigerants, all of which defi ne a Refrigerant Concentration Level (RCL) of 25 pounds per 1,000 cubic feet for R410A refrigerant.

For additional guidance and precautions related to refrigerant safety, please refer to the following documents:

International Mechanical Code 2009 (IMC-2009) (or more recently revised)

ASHRAE 15

ASHRAE 34

10

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2. SELECTING THE INSTALLATION SITE

2-1. Outdoor Unit

AVOID:

heat sources, exhaust fans, etc. (Fig. 2-1) damp, humid or uneven locations

DO:

choose a place as cool as possible.

choose a place that is well ventilated and outside air temperature does not exceed maximum 115°F constantly.

allow enough room around the unit for air intake/ exhaust and possible maintenance. (Fig. 2-2)

use lug bolts or equal to bolt down unit, reducing vibration and noise.

if cooling operation is to be used when the outdoor air temperature is 23°F or below, install a duct on

the outdoor unit.

Installation space

Distance between obstructions and the unit air inlet and outlet must be as shown below.

*3

Inlet side C

More than 1/2"

More than 1/2"

*2 *4

Outlet side More than 3.3 ft.

*1

Fig. 2-2

Exhaust fan

Hot air

Heat source

Outdoor unit

Fig. 2-1

(Obstruction above unit)

Air direction chamber

(field supply)

	B
	A
*1	Inlet side
	More than 8"
	(Obstruction on
	inlet side)

(Ground)

Fig. 2-3

	Concerning inlet-side distance “C” (Fig. 2-2)
CAUTION	The minimum for distance “C” is 6" if there are no obstructions on the outlet side
	(wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance
	“C” is 8".
	If the unit is installed with the outlet side facing wall *1, then there must be no obstructions
	on 2 of the remaining 3 sides: *2, *3, *4.
	If wall *1 is on the outlet side (Fig. 2-2), or if obstructions are present on all 3 sides *2,
	*3, and *4 (Fig. 2-2), then the minimum distance for “A” and “B” is 80" (Fig. 2-3). Even
	if there is no wall on the outlet side, a minimum of 3.3 ft. is required.

Installation requirements

provide a solid base (concrete block, 4"×16" beams or equal), a minimum of 6" above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Fig. 2-4)

use lug bolts or equal to bolt down unit, reducing vibration and noise.

Anchor bolts (4 pieces)

Fig. 2-4

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2-2. Air-Discharge Chamber for Top Discharge

Be sure to install an air discharge chamber in the fi eld when:

it is diffi cult to keep a space of min. 20" between the air discharge outlet and an obstacle.

the air discharge outlet is facing a sidewalk and discharged hot air may bother passers-by. Refer to Fig. 2-5.

2-3. Installing the Unit in Heavy Snow Areas

In locations with strong wind, snow-proof ducting should be fi tted and direct exposure to the wind should be avoided as much as possible.

Countermeasures against snow and wind

In regions with snow and strong wind, the following problems may occur when the outdoor unit is not provided with a platform and snow-proof ducting:

a)The outdoor fan may not run and damage to the unit may occur.

b)There may be no air fl ow.

c)The tubing may freeze and burst.

d)The condenser pressure may drop because of strong wind, and the indoor unit may freeze.

2-4. Precautions for Installation in Heavy Snow Areas

(1)The platform should be higher than the max. snow depth. (Fig. 2-6)

(2)The 2 anchoring feet of the outdoor unit should be used for the platform, and the platform should be installed beneath the air intake side of outdoor unit.

(3)The platform foundation must be fi rm and the unit must be secured with anchor bolts.

(4)In case of installation on a roof subject to strong wind, countermeasures must be taken to prevent the unit from being blown over.

12

Air discharge

Air discharge

Fig. 2-5

In regions with signifi cant snowfall, the outdoor unit should be provided with a platform and snow-proof duct.

					With snow-
Without snow-
proof ducting					proof ducting
(Low platform)					(High platform)

Fig. 2-6

Outdoor

Unit

Duct

Air

Intake

Fig. 2-7

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