Midea MRC-24CWN1-M13L Bedienungsanleitung

INSTALLATION INSTRUCTIONS

PACKAGE HEAT PUMP & AIR CONDITIONER

WARNING

These instructions are intended as an aid to qualified,

licensed service personnel for proper installation,

adjustment and operation of this unit. Read these

instructions thoroughly before attempting installation

or operation. Failure to follow these instructions may

result in improper installation, adjustment, service or

maintenance possibly resulting in fire, electrical shock,

property damage, personal injury or death.

RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION

DO NOT DESTROY THIS MANUAL

Please read carefully and keep in a safe place for future reference by a serviceman.

FEATURING R-410A

13 SEER SERIES - (2-5Tons)

TABLE OF CONTENTS

LIST OF TABLES

LIST OF FIGURES

This document is customer property and is to remain with this unit.

These instructions do not cover all the different variations of systems nor

does it provide for every possible contingency to be met in connection with

installation.

All phases of this installation must comply with NATIONAL, STATE and

LOCAL CODES. If additional information is required please contact your local

distributor.

1.0 SAFETY

WARNING

These instructions are intended as an aid to qualified, licensed service

personnel for proper installation, adjustment and operation of this unit. Read

these instructions thoroughly before attempting installation or operation.

Failure to follow these instructions may result in improper installation, adjust-

ment, service or maintenance possibly resulting in fire, electrical shock, prop-

erty damage, personal injury or death.

WARNING

The manufacturer’s warranty does not cover any damage or defect to the

heat pump caused by the attachment or use of any components, accesso-

ries or devices (other than those authorized by the manufacturer) into, onto

or in conjunction with the heat pump. You should be aware that the use of

unauthorized components, accessories or devices may adversely affect the

operation of the heat pump and may also endanger life and property. The

manufacturer disclaimer any responsibility for such loss or injury resulting

from the use of such unauthorized components, accessories or devices.

WARNING

Disconnect all power to the unit before starting maintenance. Failure to do

so can result in severe electrical shock or death.

WARNING

Do not, under any circumstances, connect return ductwork to any other heat

producing device such as a fireplace insert, stove, etc. Unauthorized use of

such devices may result in fire, carbon monoxide poisoning, explosion,

property damage, severe personal injury or death.

WARNING: This is a safety alert symbol indicating a potential hazard-

ous situation, which could result in personal injury, property and/or

product damage or death.

CAUTION: This is a safety alert symbol indicating a potential hazard-

ous situation, which could result in moderate personal injury, property

and/or product damage.

When you see the symbols below on the labels or in the manuals, be alert to

the potential or immediate hazards of personal injury, property and/or product

damage. It is the owner’s or installer’s responsibility to comply with all safety

instructions and information accompanying these symbols.

WARNING

The unit must be permanently grounded. A grounding lug is provided. Failure to

ground this unit can result in fire or electrical shock causing property damage,

severe personal injury or death.

WARNING

Only electric heater kits supplied by this manufacturer as described in this

publication have been designed, tested, and evaluated by a nationally recog-

nized safety testing agency for use with this unit. Use of any other manufac-

tured electric heaters installed within this unit may cause hazardous conditions

resulting in property damage, fire, body injury or death.

WARNING

Proposition 65: This appliance contains fiberglass insulation. Respirable

particles of fiberglass are known to the state of California to cause cancer.

As soon as unit is received, it should be inspected and noted for possible shipping

damage during transportation. It is carrier’s responsibility to cover the cost of

shipping damage. Manufacturer or distributor will not accept the claims from dealer

for any transportation damage.

1.1 INSPECTION

Refer to Fig. 2-2, 2-3 for unit physical data and to Table 6-1 & 6-2 for electrical

data.If components are to be added to a unit they must meet local codes, they are

to be installed at the dealer’s and /or the customer’s expense.

Size of unit for proposed installation should be based on heat loss / heat gain

calculations made in accordance with industry recognized procedures identified

by the Air conditioning contractors of America.

1.2 LIMITATIONS

2.0 INSTALLATION

2.1 PRE-INSTALLATION

Before installation, carefully check the following:

1. Unit should be installed in accordance with national and local safety codes,

including but not limit to ANSI/NFPS No. 70 or Canadian Electrical Code Part 1,

C22.1, local plumbing and wastewater codes and any other applicable codes.

2. For rooftop installation, be sure the structure has enough strength to support

the weight of unit. Unit should be installed on roof curb and leveled.

3. For ground level installation, a level slab should be used.

4. Condenser airflow should not be restricted.

5. On applications when a roof curb is used, the unit must be positioned on the

curb so the front of the unit is tight against the curb.

* The above figure for reference purpose only.

2.2 CLEARANCE

All units require certain clearance for proper operation and service. Refer to

Table 2-1 for the clearances required for construction, servicing and proper

unit operation.

2.3 RIGGING AND HANDING

Exercise care when moving the unit. Do not remove any packaging until the

unit is near the place of installation. Rig the unit by attaching chain or cable

slings to the lifting holes provided in the base rails. Spreader bars, whose

length exceeds the largest dimension across the unit, MUST be used across

the top of the unit.

CAUTION

Before lifting, make sure the unit weight is distributed equally on the rigging

cables so it will lift evenly.

Units may be moved or lifted with a forklift. Slotted openings in the base rails

are provided for this purpose.

All panels must be secured in place when the unit is lifted.

The condenser coils should be protected form rigging cable damage with

plywood or other suitable material.

CAUTION

Fig. 2-1 Component Location

Compressor

Highly efficient enhanced

copper tube / aluminum fin

indoor coil

Compressor

contactor

Low voltage

terminal block

Blower motor with

slide-out blower assembly

Decorative

protective coil

guard

Heavy gauge removable

base rails

Condenser fan motor

Electric heater assembly (optional)

Highly efficient enhanced copper

tube/Aluminum fin outdoor coil

Electrical service access

compapartment panel Condensate drain

connection 3/4” NPTI

(Trap required)

Left

Condenser coil

Front

Fig. 2-2 Unit Dimensions

Low vlotage entrance 7/8” Dia.

High voltage conn. 1-23/64” Dia.

Unit size：

024, 036

* The above figure for reference purpose only.

Hi./Lo. pressure

detected valve

1/4’’ SAE

Side supply

air opening

Side return

air opeing

14-1/2"

3-55/64"

14-1/2"

2-31/32"

14-1/2" 4-17/64"

51-29/64"

24-13/16"

2-3/8"

3-23/32"

5-1/2"

2-31/32"

18-29/32"

37-23/32"

19"

Fig. 2-3 Unit Dimensions

Electrical service access

compapartment panel

Condensate drain

connection 3/4” NPTI

(Trap required)

Front

Left

Unit size：

048, 060

Condenser coil

Side supply

air opening

Side return

air opeing

* The above figure for reference purpose only.

Low vlotage entrance 7/8” Dia.

High voltage conn. 1-23/64” Dia.

Direction Distance (in.)

Direction

Distance (in.)

Top

Front

Rear

Right

Left

Bottom

Duct clearance: 1 inch clearance for all sides of air supply duct.

1. Units must be installed outdoors. Over hanging structure or shrubs should not obscure condenser air discharge outlet.

2. The minimum clearance without economizer/fresh air damper. For distance with Economizer/fresh air damper, please refer to the

relevant Install requiremnt.

3. Units may be installed on combustible floors made from wood or class A, B or C roof covering materials.

Table 2-1: Unit Clearance

NOTE

For units applied with a roof curb, the minimum clearance may be reduced from 1 inch to 1/2 inch between

combustible roof curb material and this supply air duct.

Hi./Lo. pressure

detected valve

1/4’’ SAE

14-1/2"

33-3/64"

2-3/8"

5-1/2"

2-31/32"

21-7/8" 57-61/64"

4-17/64"

14-1/2" 14-1/2" 4-49/64"

19"

42"

5-11/16"

3-23/32"

3.0 DUCTWORK

NOTE

On ductwork exposed to outside air conditioning space, use at least 2” of

insulation and a vapor barrier. Flexible joint may be used to reduce noise.

4.0 CONDENSATE DRAIN CONNECTION

1. Use female NPT threaded fitting for outside connection and make sure that

drain holes are not blocked.

2. Insulation may be needed for drain line to prevent sweating.

3. Drain pan has two drain connections on each side to provide flexibility of

connection and drainage. Make sure proper pitch and plugging if second

connection is not used.

4. Use a sealing compound on male pipe threads. Install the condensate

drain line (NPT) to spill into an open drain.

A closed return duct system shall be used. This shall not preclude use of

economizers or ventilation air intake. Flexible joints may be used in the

supply and return duct work to minimize the transmission of noise.

When fastening duct work to the side duct flanges on the unit, insert the

screws through the duct flanges only. DO NOT insert the screws through

the casing. Outdoor duct work must be insulation and waterproofed.

CAUTION

NOTE

Be sure to note supply and return openings. Refer to Fig. 2-2 and 2-3

for information concerning supply and return air duct openings.

Consult local codes for special requirements.

To provide extra protection from water damage, install an additional drain pan,

provided by installer, under the entire unit with a separate drain line. Manufac-

turer will not be responsible for any damages due to the failure to follow these

requirements.

4.1 INSTALL DRAIN PIPE

Duckwork should be made and sized by installer and in accordance with Air

Manual from Conditioning Contractors of America and local codes.

6.1 POWER WIRING

1. Proper electrical power should be available at unit. Voltage tolerance should not

be over 10% from rating voltage.

2. If any of the wire must be replaced, replacement wire must be the same type

as shown in nameplate, wiring diagram and electrical data sheet.

3. Install a branch circuit disconnect of adequate size to handle starting current,

located within sight of, and readily accessible to the unit.

4. ELECTRIC HEATER - If the Electric Heater is installed, unit may be equipped

with 30~60A. circuit breakers or fuse. These breaker(s) protect the internal wiring

in the event of a short circuit and serve as a disconnect. Circuit breakers installed

within the unit do not provide over-current protection of the supply wiring and

therefore may be sized larger than the branch circuit protection.

• Supply circuit power wiring must be 221 °F minimum copper conductors only.

See Electrical Data in this section for ampacity, wire size and circuit protector

requirements. Supply circuit protective devices may be either fuses or “HACR”

type circuit breakers.

• Two 1-3/8” knockouts on the back panel are provided for connection of power

wiring to electric heater.

• Power wiring is connected to the power terminal block in unit electric heater

cabinet.

See Electrical Heater Installation Instruction for details.

6.0 ELECTRICAL WIRING

Field wiring must comply with the National Electric Code (NEC) or Canadian

Electrical Code (CEC) and any applicable local ordinance.

WARNING

Disconnect all power to unit before installing or servicing. More than one

disconnect switch may be required to de-energize the equipment. Hazard-

ous voltage can cause severe personal injury or death.

Units are shipped without a filter or filter racks. It is the responsibility of the

installer to secure a filter in the return air ductwork or install a filter/frame Kit.

Filter must always be used and must be kept clean. When filter become dirt

laden, insufficient air will be delivered by the blower, decreasing your units

efficiency and increasing operation costs and wear-and tear on the unit and

controls.

Filters should be checked monthly; this is especially important since this unit is

used for both heating and cooling.

5.0 FILTERS

• Make sure, after installation, separation of control wiring and power wiring

has been maintained.

6.2 GROUNDING

WARNING

The unit must be permanently grounded. Failure to do so can result in

electrical shock causing personal injury or death.

• Grounding may be accomplished by grounding metal conduit when installed in

accordance with electrical codes to the unit cabinet.

• Grounding may also be accomplished by attaching ground wire(s) to ground

lug(s) provided in the unit wiring compartment.

6.3 CONTROL WIRING

IMPORTANT: Class 2 low voltage control wiring SHOULD NOT be run in

conduit with main power wiring and must be separated from power wiring,

unless class 1 wire of proper voltage rating is used.

• Low voltage control wiring should be 18 AWG color-coded. For lengths

longer than 50 ft, 16 AWG wire should be used.

• Two 7/8” holes can be used for control wires going into the unit, one on left

side and one at the bottom.

Thermostat should be mounted on an inside wall about 58” from floor and

will not be affected by unconditioned air, sun and/or heat exposure. Follow

the instruction carefully because there are many wiring requirements.

See Fig. 6-1 ~ 2, Table 6-1 ~ 2

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