Dectron LD Series, DS Series Installation Manual

DS and LD Series Dehumidifiers

Installation Manual

Dectron Co. Dectron.com

Table of Content

C - General Information
D - Delivery and Storage

 Receiving checklist.
 Shipping Damage handling
 Storage

E - Mechanical Installation

 Lifting and Rigging
 General Mechanical Installation Requirements

o General Placement of the Equipment
o Indoor Dehumidifier Installation
o Outdoor Dehumidifier installation

 Louvers Installation
 Field-Installed Outdoor Air Filter Rack Installation
 Outdoor Air and Exhaust “Door/Louver” Assembly Installation E-4

 Outdoor Condenser and Fluid Cooler Mechanical Installation
 Mechanical Installation - Special Cases

o Frame-mounted Main Blower(s) Shipping Brackets E-8
o “Split-Deck” Dehumidifier – Mechanical Field Disassembly and Assembly E-9
o “Split-Cut” Dehumidifier – Mechanical Field Assembly E-10

F - Ductwork Connection F-1

 Ductwork Layout Considerations
 Duct Connection – General Considerations
 Duct Connection – Special Cases

G - Piping Connection

 Piping Connection – General Considerations
 Condensate Drain Connection and P-trap Installation
 Pool Water Heating Connection
 Outdoor Air Condenser Piping
 Fluid Cooler Piping
 Other Piping Systems and Special Cases

o Space Heating and Space Cooling Hydronic Systems G-7
o Gas-Fired Space Heaters G-7
o “Split-Cut” Dehumidifier – Piping Assembly G-7
o Remote gas Boiler Package Installation and Piping Connection G-8

C-1
D-1

D-1
D-1
D-2

E-1

E-1
E-2
E-2
E-2
E-2
E-3
E-3

E-5
E-8

F-1
F-1
F-2

G-1

G-1
G-1
G-2
G-3
G-5
G-7

INM.XX.X.00 i April, 2018

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o

o

o

o

Table of Content (cont-d)

H - Electric Connection: Power, Control and Communication H-1

 Electrical Connection – General Consideration
 Equipment Main Power Connection
 Outdoor Air Condenser and Fluid Cooler Power and Control Connection

 Field Wiring – External Control and Communication

Fire/Smoke Detecting System Interlock H-3
Operator Panel Local and Remote Installation H-3
External BMS and WebSentry Communication H-4

 Field Wiring – Special Cases

“Split-Deck” Dehumidifier – Electrical Field Disassembly and Assembly H-6
“Split-Cut” Dehumidifier – Electrical Field Assembly H-6

H-1
H-1
H-2

H-2

H-6

April, 2018 ii INM.XX.X.00

C – General Information

General Information

This manual provides basic information about various installation aspects of the applicable Dectron Co. (Dectron)
dehumidifier and its additional and auxiliary systems and devices (outdoor condenser, fluid cooler, communication
interfaces, etc.)

Important information regarding operation, maintenance, and start up can be obtained at Dectron (see Contact Us
below).

Operating Safety (Warnings, Cautions, and Notes)

FOR YOUR SAFETY: READ BEFORE PERFORMING ANY INSTALLATION OR OTHER TASKS!

Only qualified technicians should install, operate, maintain or service mechanical equipment
including Dectron’s dehumidification system.
Make sure to read this manual before performing any installation tasks to familiarize yourself
with the equipment as well as with any potential hazards. Always exercise caution!

Beware of high pressures and chemicals!

• Dehumidifiers, equipped with compressors, contain refrigerant under high pressure; oil is
also contained in the compressor and refrigeration circuit(s)

• Some dehumidifiers may also contain other liquids such as glycol mixtures and pool water

The following warnings, cautions, and notes appear throughout this manual and referenced documentation
whenever special care must be taken to avoid potential hazards that could result in equipment malfunction or
damage, personal injury, or death.

WARNING

Indicates a potentially hazardous
situation which could result in
serious injury or death if handled
improperly.

CAUTION

Indicates a potentially hazardous
situation which could result in
moderate injury or equipment
damage if handled improperly.

Note

Indicates a situation that could
result in equipment damage or
improper/ineffective operation if
handled improperly.

INM.XX.X.00 C-1 April, 2018

C – General Information

Reference and Additional Information

For safe, efficient and problem-free operation, it is critical to handle the dehumidifier (as well as related systems
and components) properly at each step - from receiving and storage to installation and start up. Relevant
information can be found in the respective documents (Operation and Maintenance Manual, Start Up Package,
etc.) provided with the dehumidifier.

This manual and other related documents can be also obtained at Dectron (see Contact Us below).

Warranty

The Dectron standard warranty statement can be found in the Operation and Maintenance Manual, provided with
the equipment (also available at Dectron – contact factory as needed).

Attention: Warranty Conditions and Coverage.

NOTE. Dectron equipment is provided with comprehensive conditional warranty coverage. Any warranty work

to be reimbursed must be approved by Dectron Service Team prior to work commencing. Installation, start up,
maintenance etc. are not within warranty scope.
Refer to the Dectron standard warranty statement for more details on warranty conditions, scope and coverage.

Attention: Equipment Proper Usage.

CAUTION! Dehumidifier is NOT intended, and, therefore, NOT to be used, to condition (heat, cool,

ventilate etc.) premise that is still under construction. Such usage may cause equipment premature wear, poor
performance and potential failure afterwards and will void the warranty!

WARNING! Any work (installation, start up, service, maintenance, repair, etc.) on any mechanical

equipment (dehumidifier, outdoor condenser, fluid cooler, etc.) must be performed in accordance with
respective Dectron recommendations as well as submittal documentation, local Codes and Regulations, and
appropriate field practices. Failure to do so could result in personal injury, equipment damage or malfunction,
and will void equipment warranty. Only qualified and properly trained individuals should perform tasks on this
equipment.

Contact Us

Headquarter

Dectron Company

5685 Rue Cypihot
Saint Laurent QC, H4S1R3
Canada

Phone:

1.888.DECTRON

1.800.676.2566
US: 770.649.0102
Canada: 514.336.3330

Fax:

US: 770.649.0243
Canada: 514.337.3336

Dectron Co Online

Main website:

http://www.dectron.com

General Inquiries:

[e-mail]

Service/ Parts inquiries:

[e-mail]

April, 2018 C-2 INM.XX.X.00

D – Shipping and Storage

Delivery and Storage.

Receiving Checklist

Dectron inspects and fully tests each piece of equipment before it ships from the factory; however, the equipment
may suffer damage in transit.

It is highly recommended to thoroughly check for both visible and concealed damage upon the equipment arrival
and before signing the receiving papers:

 Visually inspect exterior of the equipment for damages (scratches, dents, missing elements, etc.)
 Verify the proper operation of latches and hinges on all access doors
 Inspect all coils for damage to the fin surface coating, headers or coil connections
 Manually rotate the fan wheel to ensure free movement of the shaft, bearings, and drive
 Inspect the fan housings for any foreign objects
 Inspect and test all piping for possible shipping damage
 Check the tightness of bolts on the fan structure and coils
 Inspect fan isolator shipping brackets

Shipping Damage Handling

Dectron ships freight on board (FOB), meaning that the equipment belongs to the customer as soon as the delivery
truck leaves the factory.

Note: Dectron is not responsible for any shipping damage. Should the equipment arrive damaged, follow the

instructions below to resolve the situation. Delivery cannot be refused on the basis of shipping damage.

Shipping Damage Handling Instructions:

 Note the damage in detail on the freight bill and bill of lading.
 Take clear photographs of the damaged components, areas, and portions of the equipment.
 Obtain a claim form from the carrier, fill it out, and return it promptly. Report all claims of shipping damage to

the carrier immediately and coordinate a carrier inspection if necessary.

 Contact Dectron Service Team (see Contact Us above) to notify of the noted damage.

o Have the equipment serial number (8-digit) on hand to provide to Service Team. The serial number

can be found on the equipment’s main label or bill of lading.

o Note: it is the receiver's responsibility to provide reasonable evidence that damage was not incurred

after delivery.

o Do not attempt to repair the equipment without consulting with Dectron Service Team.

INM.XX.X.00 D-1 April, 2018

D – Shipping and Storage

Storage

 Protection from the elements is required for any equipment that will be stored on a job site or holding area

before installation.

 For long-term storage, a controlled indoor environment is highly recommended.
 All factory-applied shipping protection should be removed before the equipment is put into storage. Shipping

protection material is provided by the factory for shipping only – it is not a suitable protection for short or
long-term storage.

 If long-term storage is required, warranty aspect should be considered. Refer to the Warranty section of

Operation and Maintenance Manual for more details. Please contact Dectron if you have any questions.

April, 2018 D-2 INM.XX.X.00

E – Mechanical Installation

Mechanical Installation

WARNING! All work must be done by qualified personnel in accordance with local and national Codes,

Standards and Regulations as well as respective design/submittal documentation and Dectron recommendations.

CAUTION! Obtain all necessary documentation (Dectron documentation, submittal documentation,

drawings, etc.) and familiarise yourself with it before performing installation or any other related tasks.

Lifting and Rigging

WARNING! Lifting and rigging must be done by trained professionals in accordance with proper lifting

techniques and safety procedures. Proper lifting machinery and tools and safety equipment (PPE) must be used.
Improper lifting may cause equipment damage, serious injury, or death. Dectron Technologies Inc. is not
responsible for the improper use of lifting equipment.

 Use spreader bars for lifting to prevent equipment damage. Use cables (chains or slings) as shown on Pic. E.1.

o Use dehumidifier lifting brackets at

the base frame.

 Each of the lifting cables (chains or slings)

must be capable to support the entire
weight of the equipment.

 Determine the approximate centre of

gravity before lifting. See equipment design
drawings in the submittal documents for the
total weight and weight distribution.

 Lifting cables (chains or slings) may not be of

the same length. Adjust as necessary for an
even lift.

 Do not lift equipment in windy conditions.
 Do not raise equipment overhead with

personnel below.

 Test lift the equipment 24 inches to verify

proper operation of lifting machinery and
positioning of lift points such that the lifted equipment is level.

 To avoid damage, do not attach intake or exhaust hoods prior to lifting

Pic. E.1

“Split-Cut” Dehumidifier Lifting

Some dehumidifiers may, if requested, be shipped in sections to be assembled on site.

 Never assemble split sections before lifting them to the installation location.

o Always lift sections separately, as received from the factory.

 Lift each section using its lifting lugs/brackets.

INM.XX.X.00 E-1 April, 2018

E – Mechanical Installation

Junction box

General Mechanical Installation Requirements

Equipment (dehumidifier, outdoor condenser, fluid cooler, etc.) should be installed in accordance with respective local Codes and
Regulations as well as applicable submittal documentation. There are several general key installation points:

General Placement of the Equipment

 Equipment must be installed on a firm, levelled surface, with provision for vibration absorption.
 Service and operational clearances to the equipment must be always maintained.

o Access to ALL doors, louvers, filter racks, access ports and covers must not be restricted. Some

installations may require cat-walks (over ducts, pipes, etc.) or other means of access to otherwise
restricted side of the equipment.

o Dehumidifier: may require up to 30” clearance for proper operation, service and maintenance;
o Outdoor Condenser (OACC)/Fluid Cooler (OAFC): may require up to 36” clearance all around and up

to 96” clearance above fan for proper operation, service, and maintenance.

 Avoid installing OACC/OAFC in a pit, where it’s surrounded on all four sides by walls,

structures, etc. If such an installation cannot be avoided, the following must be maintained:

 the min. clearances must be increased to double width of the OACC/OAFC all around;
 surrounding structures’ height must not exceed the height of the OACC/OAFC.

NOTE. For equipment-specific data (dimensions, clearances, accessibility, etc.) refer to equipment submittal

documentation, Operation and Maintenance Manual, and equipment labels and stickers.

Indoor Dehumidifier Installation (dehumidifier, installed in mechanical room)

 No chemicals allowed to be stored in the same mechanical room;

o other stored materials must not block access to the equipment for service and maintenance.

 Mechanical room must have operational floor drain.
 Ceiling-suspended installation: support dehumidifier from (underneath) the base; refer to submittal

documentation for dehumidifier weight distribution for proper selection and positioning of support.

 Outdoor Air (OA) intake box. Some dehumidifiers with outdoor intake option, may have an OA intake box,

mounted onto the OA intake opening or provided separately to be field-installed. If latter is the case:

o install box over the OA opening, attach it to the dehumidifier with provided self-tapping screws.
o Attach OA duct to the box (see Ductwork

Connection chapter).

o Control/electrical contractor: connect

control wire harness to the OA box devices
(actuators, sensor etc.) inside the junction
box (see Pic. E.2) – follow the junction box
legend and dehumidifier wiring diagram.

Pic. E.2

Outdoor Dehumidifier Installation

 Roof Curb. If the dehumidifier is installed on a roof curb, it must utilize curb gasket material (to create a

moisture and weather seal between the dehumidifier and a roof curb).

o ATTENTION! Before placing onto a roof curb, consider accessibility underneath the dehumidifier for

various mechanical and electrical systems connections (power, drain, other piping, etc.)

o ATTENTION! It is not recommended to use space within a roof curb as a supply or return duct.

 Consider the direction of strong prevailing winds – it may negatively affect equipment operation (cross-flow of

exhausted and fresh air and/or flue gases, elements (rain, snow) aspiration into the OA opening, etc.)

April, 2018 E-2 INM.XX.X.00

E – Mechanical Installation

OA sensor

Support lip

Cover panel

Outdoor Dehumidifier – Louvers Installation

To protect outdoor-installed dehumidifier openings (outdoor air intake, exhaust air discharge, etc.) against
elements, louvers are installed or provided separately for field installation. If latter is the case:
 Uncrate/unwrap provided louver and place it over respective opening/damper (Pic. E.3):

o Larger louvers require two persons to lift and place the louver
o Dehumidifier with larger louvers also have louver support lip over the damper.

 Adjust louver position – shift it slightly left or right as needed to ensure louver side walls and access panels do

not interfere with damper linkage, actuators, filter racks, sensors, etc.

 Once the louver is positioned properly, attach it to the dehumidifier with the provided self-tapping screws on

all four sides. If access panels were removed for louver installation, reattach the panels and close the latch.

Pic. E.3

Outdoor AND Indoor Dehumidifier - Field-installed OA (outdoor air intake) Filter Rack Installation

If the Outdoor Air intake (OA) filter rack is shipped separately, it should be attached to respective opening/damper
once dehumidifier is installed. This may apply to both, indoor and outdoor installed dehumidifiers.

 Attach filter rack to the damper with provided self-tapping screws; position rack as shown on Pic. E.4.
 Once the rack is installed, insert/install OA sensor (thermistor or combo sensor, as shown in the picture)

between the damper and the filters; ensure that the sensor will not interfere with the damper blades motion.

INM.XX.X.00 E-3 April, 2018

Pic. E.4