MHD-18, MHD-24 Atmos

Product Information: MHD-18 and MHD-24

MHD-18 and MHD-24 are models of a heating and cooling unit
produced by Dettson Industries Inc. The product is manufactured in
Sherbrooke, Qc, Canada.

The unit consists of several components such as panels, electric
box, fan, motor, sound blanket, four-way valve, and compressor. The
unit must be serviced by a qualified service technician only.

Table of Contents

1. Warning
2. Disassembly of Panels
3. Disassembly of Electric Box
4. Disassembly of Fan
5. Disassembly of Motor
6. Disassembly of Sound Blanket
7. Disassembly of Four-Way Valve
8. Disassembly of Compressor

Usage Instructions

Before disassembling the unit, please read the following
instructions carefully:

Warning

Follow all safety information provided in the outdoor unit
manual X62434. Make sure the power to the unit is turned off at all
times during disassembly.

Disassembly of Panels

To disassemble the panels, refer to section 2.1 for MHD-18 and
section 2.2 for MHD-24.

Disassembly of Electric Box

To disassemble the electric box, refer to section 3.1 for MHD-18
and section 3.2 for MHD-24.

Disassembly of Fan

To disassemble the fan, refer to section 4.

Disassembly of Motor

To disassemble the motor, refer to section 5.

Disassembly of Sound Blanket

To disassemble the sound blanket, refer to section 6.

Disassembly of Four-Way Valve

To disassemble the four-way valve, refer to section 7.

Disassembly of Compressor

To disassemble the compressor, refer to section 8.

Please note that these instructions are for disassembly purposes
only. For any other usage or maintenance instructions, please refer
to the product manual or consult a qualified service
technician.

DISASSEMBLY INSTRUCTIONS

Models: MHD-18 MHD-24

Servicing of the unit must be performed by a qualified service technician.

Printed in Canada on 100% recycled paper

2022-12-23

Dettson Industries Inc. Sherbrooke, Qc, Canada
www.dettson.com
X62436 Rev.A

Table of Contents

1 Warning

2

2 Disassembly of Panels

3

2.1 MHD-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 MHD-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Disassembly of Electric Box

10

3.1 MHD-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 MHD-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Disassembly of Fan

12

5 Disassembly of Motor

13

6 Disassembly of Sound Blanket

14

7 Disassembly of Four-Way Valve

15

8 Disassembly of Compressor

16

1 Warning
Follow all safety information provided in the outdoor unit manual X62434. Make sure the power to the unit is turned off at all time during disassembly.
2

2 Disassembly of Panels
2.1 MHD-18
3

4

5

2.2 MHD-24
6

7

8

9

3 Disassembly of Electric Box
3.1 MHD-18
10

3.2 MHD-24
11

4 Disassembly of Fan
12

5 Disassembly of Motor
13

6 Disassembly of Sound Blanket
14

7 Disassembly of Four-Way Valve
15

8 Disassembly of Compressor
16

References

• Dettson | Proud manufacturer of heaters