Dectron LH Series Manual de usuario

DEHUMIDIFIERS

LH SERIES

Dectron.com

OPERATION AND MAINTENANCE MANUAL

 
Dectron LH Series OMM 2April 2022 
Contents 
General Information .....................................................................................................................................4 
Operating Safety (Warnings, Cautions, and Notes)..................................................................................... 4 
Reference and Additional Information........................................................................................................ 5 
Contact Us.................................................................................................................................................... 5 
Basic Information..........................................................................................................................................6 
Dehumidifier View and Options................................................................................................................... 7 
Dehumidifier External Systems Connection ................................................................................................ 8 
Dehumidifier Optional Arrangement........................................................................................................... 9 
Air Conditioning Options –Outdoor Air Fluid Coolers (OAFC).................................................................. 10 
Equipment Specific Data............................................................................................................................ 12 
Layout and Components.............................................................................................................................13 
Dehumidifier Main Components ............................................................................................................... 13 
Layout and Components (continued)........................................................................................................ 15 
Control System............................................................................................................................................16 
Outdoor Air Fluid Coolers Layout and Components...................................................................................17 
Sequence of Operation ...............................................................................................................................18 
Set Points.................................................................................................................................................... 18 
Ventilation.................................................................................................................................................. 18 
Cooling........................................................................................................................................................ 18 
Cooling with Outside Air .....................................................................................................................18 
Cooling with Evaporator coil...............................................................................................................18 
Cooling with Chilled water coil ...........................................................................................................19 
Dehumidification........................................................................................................................................ 19 
Dehumidification with Outside Air .....................................................................................................19 
Dehumidification with Evaporator coil ...............................................................................................19 
Purge Mode................................................................................................................................................ 19 
Heat Recovery............................................................................................................................................ 19 
Space Heating............................................................................................................................................. 20 
Compressor(s) If applicable. ...................................................................................................................... 21 
Compressor Circuit Operation ................................................................................................................... 21 
Outdoor Fluid Cooler Operation................................................................................................................ 22 
Interface and Communication ....................................................................................................................23 

 
April 2022 3Dectron LH Series OMM 
Touch Display Operator Panel ................................................................................................................... 23 
Alarms .................................................................................................................................................24 
Remote Communication............................................................................................................................ 25 
WebSentry...........................................................................................................................................25 
BMS (Building Management System) ........................................................................................................ 25 
Basic Maintenance......................................................................................................................................26 
Maintenance and Safety ............................................................................................................................ 26 
Maintenance Key Points ............................................................................................................................ 26 
Routine Maintenance Program ................................................................................................................. 27 
Specific Components Maintenance........................................................................................................... 28 
Special Maintenance Tasks. Fluid Cooler Winterization. ........................................................................... 28 
Pools –Equipment Warranty......................................................................................................................30

Dectron LH Series OMM 4April 2022

General Information

This manual provides basic information about the applicable Dectron dehumidifier and its operation.

Important information regarding installation, maintenance, and start up as well as additional and auxiliary systems

and devices (outdoor condenser, communication interfaces, etc.) is normally provided with the dehumidifier and

can also be obtained from the manufacturer (see Contact Us below).

Operating Safety (Warnings, Cautions, and Notes)

FOR YOUR SAFETY: READ BEFORE PERFORMING ANY OPERATIONS, MAINTENANCE OR SERVICE TASKS!

Only qualified technicians should install, operate, maintain or service mechanical equipment

including current dehumidification system.

Make sure to read this manual before performing any tasks to familiarize yourself with the

equipment as well as with any potential hazards. Always exercise caution!

Beware of electrical power and high electrical voltage!

•Follow proper safety procedures –lockout, tagout, and other respective procedures

•Failure to follow safety procedures can result in serious injury or death

Beware of moving parts and hot surfaces!

•Make sure to stop all moving parts (fans, blowers, etc.) before accessing the equipment’s

internal space

•Be aware of hot surfaces (hot refrigeration, space heating pipes, coils, heaters, etc.)

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

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.

April 2022 5Dectron LH Series OMM

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 (like Installation Manual) provided with the dehumidifier.

This manual and other related documents could be obtained from the manufacturer (see Contact Us below).

Dectron

5685 Rue Cypihot,

Saint-Laurent, QC

H4S 1R3

Dectron.com

1-833-DAS-POOL (327-7665)

Schedule / Modify a Start-up:

Startups@DehumidifiedAirServices.com

Inquire about Warranty:

Warrant[email protected]

Order Parts:

Parts@DehumidifiedAirServices.com

All Other Product Support:

[email protected]

Start-up Requests: Start-ups@dehumidifiedairservices.com

Miscellaneous Inquiries: Support@dehumidifiedairservices.com

Parts Requests: Parts@dehumidifiedairservices.com

Warranty: Warranty@dehumidifiedairservices.com

Attention: Installation and Service Contractors

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 manufacturer’s 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.

Attention: Maintenance Team

CAUTION. To ensure equipment longevity and proper and efficient operation, the dehumidifier and its

auxiliary systems and devices (outdoor condenser, fluid cooler, etc.) should be maintained properly and regularly.

Failure to do so could negatively affect natatorium comfort levels and people’s health. It could also lead to

equipment damage, malfunction, premature tear and ware and may void equipment warranty.

Dectron LH Series OMM 6April 2022

Basic Information

Pic. C.1

April 2022 7Dectron LH Series OMM

Dehumidifier View and Options

Standard NH series dehumidifiers are semi-custom: while basic concept and layout is the same, options and

specific systems and components layout and location may vary from one dehumidifier to another. One of the

typical dehumidifier arrangement is shown on Pic.C.1.

Dehumidifier Options

•Indoor or outdoor installation.

oNote: Pic. C.1. shows outdoor model, equipped with louvers (to protect air intake and discharge

openings from elements). Indoor model would have ducts connected to respective openings, no

louvers would be needed.

•Refrigeration Capacity (compressorless ’00’ model or cooling capacity in tons) –zero to three compressors

(see Dehumidifier Optional Arrangement below for more details):

oZero-compressor dehumidifier option (6,000 to 64,000 CFM Supply cabinet, models NH000).

oTwo-compressor dehumidifier option (18 to 80 tons, models NH018 to NH080).

oThree-compressor dehumidifier option (90 to 120 tons, models NH090 to NH120).

•Airflow/ductwork connection *. Pic. C.1 shows some options only; each option location availability depends on

the dehumidifier installation (indoor or outdoor) and other options:

oReturn Air (RA) ductwork connection - top, bottom, end, sides.

oSupply Air (SA) ductwork connection –top, bottom, sides.

oOA1ductwork connection/termination –top, sides.

oEA1 and optional EA2 ductwork connections/terminations –end, sides.

oOptional OA2 ductwork connection/termination - top, sides.

•Optional Space Heating - hot water coil, electric or gas heater **.

•Heat Recovery (HR) circuit.

•Air Conditioning (AC)* –compressorless can have a chilled water coil option; cooling refrigeration has external

water cooling or fluid cooler (packaged or separate) options.

oNote: Pic. C.1 shows outdoor model without a packaged fluid cooler.

o“Packaged’ AC option is available for outdoor models only; alternatively, indoor and outdoor models

could be fitted for separate/remote AC option –remote fluid cooler or other external cooling media

source.

* Some available options (tonnage, ductwork connections, AC options etc.) are shown. Refer to the submittal

and other relevant documentation for your dehumidifier’s options.

** For specific details on space heating (hot water, gas, electric) option, refer to the submittal and other

documentation:

Attention! Equipment Clearances and Dimensions!

CAUTION! For equipment proper operation, maintenance and service, respective clearances should be

maintained. Generally, 30” clearances to the equipment must be kept for the maintenance and service purposes.

For the specific required clearances information, as well as dehumidifier overall dimensions, distances to pipe

connections, duct connections etc., refer to the submittal documentation.

Dectron LH Series OMM 8April 2022

Dehumidifier External Systems Connection

Pic. C.1 shows provisions for external systems connections, including ductwork, electric power and various piping

connections.

✓Except for the condensate, all other piping systems are optional and may not be present in each

dehumidifier

•Condensate Drain Line –bottom, side (through the dehumidifier base).

•Air Conditioning (AC) Connection.

oChilled water coil option –bottom, side.

oPackaged AC option (outdoor dehumidifier with outdoor fluid cooler (OAFC) incorporated with the

dehumidifier), does not require piping connection to external AC system or device.

▪Packaged outdoor models typically have the OAFC mounted at the end of the dehumidifier;

alternatively, if requested, OAFC could be mounted on the roof of the dehumidifier.

oRemote (“split”) AC option (indoor or outdoor dehumidifier, connected to external cooled

water/glycol system or remote fluid cooler) –side or end (through the compressor compartment

wall) connection.

•Space heating (Hot Water connection) –bottom, side.

•Space Heating (Gas Heater connection, gas line).

•Electric Power and Control Connection. Typically the power lines are to be brought directly to the main

electric panel. However, if applicable the electric power could be brought to the dehumidifier disconnect,

which is normally incorporated with main electric panel.

WARNING! Gas Line. The gas line must be installed in accordance with respective device documentation

(boiler, furnace, etc.) and local codes and regulations.

CAUTION! Current manual shows general/default connections’ location. For details regarding specific

dehumidifier’s connections (actual location, piping sizes and position dimensions, circuit type and flow direction

etc.), refer to the dehumidifier’s submittal documentation as well as dehumidifier’s labels and stickers.

NOTE. Dehumidifier MUST be equipped with a P-trap at the condensate connection for proper operation! If

dehumidifier is requested from the factory without P-trap, one MUST be installed on site prior to dehumidifier

being commissioned. Refer to the Installation Manual for details.

April 2022 9Dectron LH Series OMM

Dehumidifier Optional Arrangement

Multi-Compressor Arrangement and Compressor Compartment Layout

NH series dehumidifier, depending on required capacity, could have two or three compressors. Pic.C.2 shows

options of dehumidifier supply air (SA) end and compressor compartment arrangement, based on number of

compressors and overall tonnage of the unit.

The end compressor compartment location is used for all tonnages in the NH series.

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