MRCOOL DUCT24HP230 Installation Manual

Please read this manual carefully before installation and keep it for future reference.

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Wiring Control

Install Manual

Olympus Series

Mid-Static Duct Air Handler

(9K, 12K, 18K, 24K & 48K Models)

Please keep this manual where the operator can easily find it.
Inside you will find helpful hints on how to use and maintain your

unit properly.

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● This manual gives detailed description of the precautions

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that should be brought to your attention during operation.

● In order to ensure correct service of the wired controller
please read this manual carefully before using the unit.

● For convenience of future reference, keep this manual
after reading it.

CONTENTS

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1. SAFETY PRECAUTIONS..........................................................................1

2. INSTALLATION ACCESSORY...................................................................2

3. INSTALLATION METHOD.........................................................................4

1. SAFETY PRECAUTIONS

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

Read the safety precautions carefully before installing the unit.



Stated below are important safety issues that must be obeyed.

WARNING

CAUTION

Means improper handling may lead to personal death or severe injury.

Means improper handling may lead to personal injury or property loss.

WARNING

Please entrust the distributor or professionals to install the unit.
Installation by other persons may lead to imperfect installation, electric shock or re.
Adhere to this installation manual.
Imporper installation may lead to electric shock or re.
Reinstallation must be performed by professionals.
improper installation may lead to electric shock or re.

Do not uninstall the unit unless you absolutley need to.
Uninstalling multiple times may lead to abnormal operation, heating or re of the unit.

NOTE

1

Do not install the unit in a place vulnerable to leakage of flammable gases. Once
flammable gases are leaked and left around the wire controller, fire may occure.
Do not operate with wet hands or let water enter the wire controller. Otherwise,

2

electric shock may occur.

3

The wiring should adapt to the wire controller current. Otherwise, electric leakage or
heating may occur and result in fire.
The specified cables shall be applied in the wiring. No external force may be applied

4

to the terminal. Otherwise, wire cut and heating may occur and result in fire.

1

2. INSTALLATION ACCESSORY

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Select the installation location

Don’t install at the place where cover with heavy oil, vapor or sulfureted gas,
otherwise, this product would be deformed that would lead to system malfunction.

Preparation before installation

1. Please conrm that all the following parts you have been supply.

No. Name Qty. Remarks

Wire controller

1

Installation and owner’s manual

2

Screws

3

Wall plugs

4

Screws

5

Plastic screw bars

6
7

The connective wires group

2. Prepare the following assemblies on the site.

No.

1
2

Name

Switch box

Wiring Tube(Insulating
Sleeve and Tightening
Screw)

1

1

3

3

2

2

1

Qty.(embeded
into wall)

1
1

M4X20
(For Mounting on the Wall)

For Mounting on the Wall

M4X25
(For Mounting on switch box)

For fixing on switch box

24AWG

Specification

(only for reference)

Remarks

2

2. INSTALLATION ACCESSORY

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Precaution of installing the wire controller

1. This manual provides the installation method of wire controller. Please refer to the
wiring diagram of this installation manual to wire the wire controller with indoor unit.

2. The wire controller working in low voltage loop circuit. Forbid to directly contact the
cable of 220V commercial electricity or of 380V high voltage, and don’t wire this kind
of wire in the said loop; wiring clearance between congured tubes should at the
range of 11.8~19.7in or above.

3. The shielded wire of the wire controller must be grounded reliable.

4. Upon nishing the wire controller connection, do not use a tramegger to detect the
insulation.

5. The connective cable of wire controller should not be longer than 65.62ft.

3

3. INSTALLATION METHOD

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1.Wired remote controller structure size figure

120

21

13.1

19.5

51.1

120

2.Wiring Principle Sketch:

Wire Controller

5-Core Shield Cable, the length
is decided by installation

4

Wire Joint, 5p

Fig 3-1

Fig 3-2

50

Infraed Pipe

RUN

Indoor Unit Switch Board

Indoor Unit

85.5

+5V

GND

3. INSTALLATION METHOD

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3.Wiring figure

5-core wire

The connective wires group

5-core or 4-core wire

Connect the female joint of wires group from the mainboard with the male joint of
connective wires group. (See Fig.3-3)
Please connect the other side of connective wires group with the male joint of
wires group leads from wire controller. (See Fig.3-3)

4.Remove the upper part of wire controller

Insert a slot screwdriver into the slots in the lower
part of the wire controller (2 places), and remove
the upper part of the wire controller. (Fig.3-4)

NOTICE

The PCB is mounted in the upper part of the wire
controller. Be careful not to damage the board
with the slot screwdriver.

Slots

Fig 3-4

Indoor display board

Fig 3-3

5

3. INSTALLATION METHOD

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4.Fasten the back plate of the wire controller

For exposed mounting, fasten the back plate on the wall with the 3 screws (M4×20)
and plugs. (Fig.3-5)

Back plate

Screws (M4×20)

Fig 3-5

For ush-mounting, fasten the back plate on the switch box with 2 screws (M4×25) and
fasten it on the wall with 1 screw (M4×20). (Fig.3-6)

Switch box

Back plate

Screw (M4×20)

Screws (M4×25)

Fig 3-6

NOTICE

Put on a flat surface. Be careful not to distort the back plate of the wire controller
by overtightening the mounting screws.

6

3. INSTALLATION METHOD

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5. Wiring

Top side
wire outlet

A. For exposed mounting, four outletting positions.
There are three need cutting.

Left side
wire outlet

Embedded switch
box wiring

Wiring
hole

Right side
wire outlet

Bottom side
wire outlet

B.Shielded wiring

Fig 3-8

CAUTION

Avoid the water enter into the wired remote controller, use trap and putty to seal the
connectors of wires during wiring installation. (Fig.3-9)
When under installation, reserve certain length of the connecting wire for convenient
to take down the wired remote controller while during maintenance.

Cutting place of top
side wire outlet

Fig 3-7

Wiring through the wall

Wall hole and wiring hole
Diameter of wall hole：Φ20mm

Cutting place of left
side wire outlet

Putty

Trap

Cutting place of right
side wire outlet

Putty

Trap

Fig 3-9

Putty

Trap

7

3. INSTALLATION METHOD

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6.Reattach the upper part of the wire controller

After adjusting the upper case and then buckle the upper case; avoid clamping the
wiring during installation. (

All the pictures in this manual are for explanation purpose only.
Your wire controller may vary.

Fig 3-1

Fig 3-10

0)

8

Olympus Series

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Mid-Static Duct Air Handler

(9K, 12K, 18K, 24K & 48K Models)

The design and specifications are subject to change without prior notice.

Consult with the sales agency or manufacturer for details.