Armcor DHP Series Manuel utilisateur

Installation and

Operation Manual

DHP – Dehumidication PAC Unit

DHP500 – DHP5000

ufactured

by Armcor

ufactured

by Armcor

Contents

Equipment Application 3

Safety 4

Location of Equipment 5

Minimum Access Requirements for Maintenance

Noise Levels

Fresh Air Inlet and Exhaust Air Outlet

Drainage

Installation Instructions 6

Unpacking and Inspection

Unit Handling

Lifting with a Crane

Lifting with a Forklift

Equipment Connections 7

Ductwork

Filters

Electrical Requirements

Mains Power Supply and Fusing

Standard Equipment Layout 8

Features 9

General Maintenance 11

General

Monthly Maintenance Schedules

Guide to How Frequency According to Usage is

Established

Three Monthly Checks Maintenance Schedules

Annual Maintenance Schedules

Warranty 12

What The Warranty Policy Covers

What The Warranty Policy Does Not Cover

The Warranty Will Not Apply If;

How to Make a Warranty Claim

Pre-start Checklist 13

Commissioning Checklist 14

2 DHP – Dehumidication PAC Unit Installation and Operation Manual 2021

The DHP series are packaged dehumidication unit

designed to provide an economical and practical

solution for humidity control. Reduction in moisture

content is achieved by a combination of a plate heat

exchanger and a packaged air-conditioning system. The

solution is achieved through a 3 stage process where

the air is cooled and dehumidied through the sensible

heat exchanger; further cooled and dehumidied

through the cooling coil; then passing

back through the opposite airow path of the sensible

heat exchange media to be reheated to the required

supply air setpoint temperature.

Every proposed installation must be subject to an

engineered design by a mechanical services consultant.

Armcor Air Solutions is not responsible for the

performance of equipment in applications for which the

equipment was not designed or specied.

Equipment Application

DHP – Dehumidication PAC Unit Installation and Operation Manual 2021 3

WARNING

Improper installation, service, maintenance, or

use can cause explosion, re, electrical shock,

or other conditions, which may cause personal

injury or property damage and will void the

warranty.

Check with Armcor Air Solutions for any

information required on this equipment.

DANGER

Electrical shock can cause personal injury or

death. Before performing any work on this

equipment, the electrical supply must be turned

off to avoid the possibility of shock, injury, or

damage to the equipment. There may be more

than one power supply circuit.

Installation by Authorised Personnel

• Only trained and qualied personnel should install, repair or

service heat recovery and/or air handling equipment.

• Installing and servicing equipment can be hazardous due to

electrical and mechanical components.

• When working on equipment, observe precautions in all

literature, tags and labels attached to or shipped with the

unit. Follow all safety codes and guidelines. Wear work

gloves, safety goggles and protective clothing.

• All work must comply with relevant SAA Wiring Rules

and local authority codes. Installers must ensure that all

statutory regulations and by laws have been addressed.

• Installers must ensure that the structures built to support

the equipment have been suitably constructed for the

purpose, all safety precautions have been applied prior to

installation, and all preparation work has been suitably

sized and installed for its purpose.

Safety

4 DHP – Dehumidication PAC Unit Installation and Operation Manual 2021

It is important that the selected location for the equipment is suitable and

can adequately accommodate the unit’s physical size, the unit weight and

has safe and suitable access for correct operation and future maintenance

requirements.

Location of Equipment

Minimum Access Requirements

for Maintenance

• The unit must be mounted so that sufcient space is

allowed for installation and service access.

• Maintenance personnel need to gain access to all

parts of the unit and be able to remove components

such as fans and lters via access doors as required.

• Unless otherwise specied the following minimum

access should be available:

- 800mm clearance for electrical connections

- 1200mm for all access doors on the unit or if no

access door is provided 1200mm from the front of

the unit.

Noise Levels

• Do not locate equipment adjacent to sleeping

quarters unless background noise levels have been

checked and permitted by the appropriate authority.

• It is recommended that rubber supporting or

vibration absorbing pads be used to support the unit

to minimise any vibration being transmitted into the

building structure. We recommend wafe pad to be

used under the base frame and exible couplings be

tted to the supply and return ducts to reduce any

vibration transfer.

Fresh Air Inlet

• The location of the fresh air inlets must adhere to the

Australian Standards AS 1668.2.

• The fresh air intake should be positioned clear of

any objects which could obstruct the airow and be

a minimum distance of 6 metres from any exhaust

discharge ducts from the unit or any other adjacent

equipment. Refer to Australian Standards AS 1668.2.

• The fresh air inlet should be tted with a cowl or

other suitable means of weatherproong.

Drainage

• Equipment should be installed with a positive fall

to ensure water drains away freely through drain

outlets. Drain lines must be as large as or larger than

the tting to which the line is being connected. Each

drain should be separately trapped.

• All condensate drains must have a ‘P” Trap tted and

have a minimum fall of 20mm per metre length.

• If drain lines are to be extended from the inside to the

outside of the building they must be extended beyond

walls of the building to eliminate the possibility of

damage caused by drain water running down the

exterior surface of the building wall.

• When a drain is exposed to freezing temperatures or

subject to the formation of condensation, the drain

should be insulated.

IMPORTANT: ALL UNITS LOCATED IN PLANT ROOMS

MUST HAVE DRAIN TRAYS UNDER THE COMPLETE UNIT.

DHP – Dehumidication PAC Unit Installation and Operation Manual 2021 5

Installation Instructions

Unpacking and Inspection

• The unit should be inspected upon delivery for

possible external damage incurred during transport.

If damage is evident, it should be noted on the freight

docket and contact is to be made with the Armcor

Air Solutions sales ofce. A claim should be lodged

with the shipping company within 3 days if goods are

damaged or incomplete. No claims will be recognised

after this date.

• IF MAJOR DAMAGE IS APPARENT, DO NOT LIFT UNIT

ON TO SITE WITHOUT PRIOR APPROVAL FROM

ARMCOR.

• The unit was tested and inspected prior to packing

and was in perfect condition at the time of despatch.

• Check unit rating plate to ensure the correct unit

matches the job specications.

Unit Handling

• Protective crating or packaging and the pallets

should not be removed until the unit is at the point of

installation.

• When removing packaging or crating, be careful not

to damage, scratch or dent the unit.

• After removal of packaging, all removable access

panels should be opened to inspect for unit internal

damage.

Lifting with a Crane

• SAFETY – when installing or working on equipment,

always adhere to safety codes and guidelines.

Wear safety goggles, work gloves, work boots and

protective clothing.

• All external units are provided with substantial lifting

lugs on each corner at the base frame. NOTE – All

units should be lifted into position using SLINGS and

NOT CHAINS. (Chains may damage exterior nish on

the fan unit).

• Where units have to be craned into position,

installers must check that the unit weight is within

the safe tolerance of the working capacity of the

crane.

• Prepare for lifting with spreaders as you would do

with lifting air conditioning equipment.

• When lifting equipment never stand under the load.

• Beware of lifting equipment onto roof areas in windy

conditions. Only lift when weather conditions are

favourable.

Lifting with a Forklift

• Exercise extreme caution when lifting with a forklift.

Do not exceed the height limit of the forklift and

never allow the forklift forks to make contact directly

with the bottom panel of the unit.

• Make careful consideration of the unit’s centre

of gravity and distribute the weight equally

on both forks. Test load to see if the weight is

equally distributed. Do this by lifting the unit a

few centimetres off the ground level and checking

stability before lifting any further or before

transporting the unit.

6 DHP – Dehumidication PAC Unit Installation and Operation Manual 2021

Equipment Connections

Ductwork

• Air distribution ductwork must be designed to allow

for the specied air ow without excessive pressure

levels. The unit should be situated as close as

possible to the point of use to prevent unnecessary

long runs of ductwork.

• Sheetmetal ductwork is recommended for use with

all Armcor Air Solutions equipment.

• Ducts should be insulated in accordance with BCA

Section J-5.

• Fan inlet conditions can affect the fan performance,

particularly where duct bends cause a non-uniform

ow and swirl at the inlet. To reduce losses due

to fan systems effect, adequate length of straight

duct between any elbow and the fan inlet should be

provided or turning vanes used in the elbow.

• Poor fan outlet conditions will also affect the fan

performance. Armcor recommends a minimum of

1000mm of straight duct directly after the fan outlet.

Filters

• 50mm panel lters are a minimum recommendation

for all equipment.

• Filters MUST be tted to the fresh air inlet. Where

there is no provision for lters within the unit, the

installing contractor is responsible to incorporate

lters in the ductwork system external to the unit.

• It is recommended that temporary disposable lters

are used during construction & commissioning.

• Where a Heat Exchanger is incorporated in the

equipment, warranty will be void if lters are not

tted.

IMPORTANT: NEVER OPERATE A UNIT WITHOUT FILTERS

FITTED TO THE FRESH AIR INTAKE.

Electrical Requirements

• The power requirement and voltage are detailed on

the equipment technical specications (available at

armcor.com.au) and are on the identication/serial

number plate attached to each unit.

• An electrical diagram is attached to the electrical box

on the unit.

Mains Power Supply and Fusing

• A single-phase power supply rated at 240v (+/- 5%)

50Hz or a 3-phase power supply rated at 415 volts is

required to operate the unit within manufacturer’s

tolerance. Check the name plates for correct voltage.

• We recommend an isolator be mounted externally

to the unit (not supplied) and a suitably sized

circuit breaker mounted back at the distribution

board to provide local isolation during service and

maintenance periods.

• Main cables and control circuit wires are to be

connected as per wiring diagram.

• All wiring must comply with relevant local wiring

regulations.

• The unit requires a main circuit breaker capable of

handling the full load of the unit and selected in

accordance with SAA Wiring Rules.

• All wiring is to be independently colour coded.

• Single phase fan motors are internally protected and

there is no need for external overloads.

DHP – Dehumidication PAC Unit Installation and Operation Manual 2021 7

Standard Equipment Layout

Supply Air

Outlet

Fresh Air

Intake

1 Fresh Air passes through filter.

2 Air off Heat Exchange - cooled and dehumidified.

3 Air off DX Coding Coil - cooled and dehumidified.

4 Air off DX Heat Exchange - warmed to Supply Air Outlet Temperature.

8 DHP – Dehumidication PAC Unit Installation and Operation Manual 2021

Features

Oil Sight Glass

Oil should be visible during operation after the unit has

stabilised.

Compressor

Control Board

Sight Glass

Sight glass is not necessarily clear. Do not charge on

sight glass with reverse cycle systems.

TX Valve

All TX valves have adjustment for super heat settings.

8-11K is acceptable for R407C.

DHP – Dehumidication PAC Unit Installation and Operation Manual 2021 9

Filter Dryer (Biow type)

Must be replaced if the system is opened.

Drip Tray Drains

All drains should be trapped externally to the unit.

Compressor Bracket

Do not remove compressor bracket, this bracket is for

transport and for the operation of the compressor.

Electrical Connection

Tighten all electrical connections before starting and

commissioning unit.

Phase Failure

Relay

Fan Control Card.

Adjust pots for speed

control of supply & exhaust fans

Pipe Clamps

Tighten all pipe clamps before starting. These clamps

may loosen in transport.

10 DHP – Dehumidication PAC Unit Installation and Operation Manual 2021

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