Munters WDP Manual de usuario
Installation manual
Manuale di installazione
WDP
Gutter system
Sistema di distribuzione dell'acqua
WDP
Ag/MIT/UmGb-2216-10/14 rev 1.0
2© Munters AB, 2018
Munters reserves the right to make alterations to specifications, quantities, dimensions etc. for production
or other reasons subsequent to publication.
The information contained herein has been prepared by qualified experts within Munters. While we
believe the information is accurate and complete, we make no warranty or representation for any particular
purpose. The information is offered in good faith and with the understanding that any use of the units or
accessories in breach of the directions and warnings in this document is at the sole discretion and risk of
the user.
3
© Munters AB, 2018
Contents
1. General 4
1.1 Disclaimer 4
1.2 Introduction 4
1.3 Notes 4
2. Before using 5
2.1 Delivery check 6
2.2 Packaging and transport 6
2.3 Typical installations 6
3. Installation 7
3.1 Mounting the brackets 7
3.2 Assembling the bottom gutter 9
3.3 Mounting the sides 10
3.4 Assembling the top gutter 11
3.5 Inserting the drains 12
3.6 Inserting the CELdek® pads 13
3.7 Double "T" profile for Celdek®pads overlapping 14
3.8 Water distribution components 15
3.9 Plumbing kit components for the distribution pipes 17
4. Commissioning 19
4.1 First time start up 19
4.2 Setting the bleed-off rate 19
4.3 Trouble shooting 20
5. Maintenance 21
5.1 Mineral deposits 21
5.2 Algae 21
5.3 Regular maintenance 21
5.4 Replacement of a CELdek® pad 22
6. Technical specifications 23
6.1 Pump functioning 23
6.2 General 23
6.3 Water tank 24
4
© Munters AB, 2018
1. General
1.1 Disclaimer
Munters reserves the right to make alternations to specifications, quantities, dimensions etc. for production or
other reasons, subsequent to publication.
The information contained herein has been prepared by qualified experts within Munters.
While we believe the information is accurate and complete, we make no warranty or representation for any
particular purposes. The information is offered in good faith and with the understanding that any use of the
units or accessories in breach of the directions and warnings in this document is at the sole discretion and risk
of the user.
Any complaints concerning the products are conditioned by the strict compliance of the instructions contained
by the manual. The manufacturer reserves the right to forfeit any claims e.g. corrosion resulting from non-
observance of the instructions and non-compliant use e.g. proper bleed-off.
1.2 Introduction
Congratulations on your excellent choice of purchasing a Munters WDP gutter system!
In order to realise the full benefit from this product it is important that it is installed, commissioned and
operated correctly. Before installation or using the WDP gutter system, this manual should be studied carefully.
It is also recommended that it is kept safely for future reference.
The manual is intended as a reference for installation, commissioning and day-to-day operation of the Munters
WDP gutter system.
1.3 Notes
Date of release: April 2014.
Munters cannot guarantee to inform users about changes or to distribute new manuals to them.
All rights reserved. No part of this manual may be reproduced in any manner whatsoever without the expressed
written permission of Munters.
The contents of this manual are subject to change without notice.
WARNING!
•All the components and spare parts MUST be stored in dry and clean
environment
•Max environment temperature during assembling and/or storage shall not
exceed 50°C.
•DO NOT stock packages under direct sunrays.
5
© Munters AB, 2018
2. Before using
WARNING! The presence of Chlorine in the water will cause corrosion to the Gutter. DO NOT USE
water containing Chlorine.
WARNING! The presence of Chlorides in the water will cause corrosion to the Gutter. DO NOT
USE water having Chlorides content higher than 200mg/l.
WARNING! Do not expose the gutter system to substances containing barium polysulfide
(insecticides, pesticides and fungicides) as irreversible damage may occur to the gutter system.
Please note the limits for make-up water and sump water at ambient temperature for evaporative cooling
systems.
Constituent Make-up* Water Sump ** Water Reasons
Chlorides (as Cl) <50 mg/l <200 mg/l
High Chlorides will cause corrosion of metal
parts. Chlorides are contributed by contaminants
such as sodium chloride. Chlorine is a minor
contributor
Chlorine or
Bromine 0-1.5 mg/l *** 0 mg/l
Chlorine and bromine will rarely control algae
because they are
both very volatile and will not stay in the water.
Both will turn
Munters pads soft and shorten their life.
pH 6.0-8.5 7.0-9.0
Low pH is acid and will cause the paper to be
brittle. High pH is
more like lye and causes the paper to become
fluffy like cotton.
Pads will last the longest with a pH of 7 to 9. If
the water absorbs
ammonia from the air drawn across the pads,
the pH can increase to as high as 10.5. Bleed off
definitely helps to control pH.
*) Make-up water is the water supply needed to replace the water which is lost by evaporation in a closed-circuit gutter system;
**) Sump water is the water found in the covered tank or cistern;
Sources of water:
•Deep wells or municipal water supplies are recommended;
•***) Chlorinated municipal make-up water is not recommended for spray on pads;
•Lake and river water should be filtered and chemically treated for microbial growth;
•Seawater, brackish water and reclaimed water are not recommended;
•Rainwater, reverse osmosis water, demineralized water and zeolite softened water should be used with
caution. Consult Munters before using.
Note: only pure water evaporates from the evaporative cooling pads. Naturally occurring components such
as sodium and chlorides, minerals and contaminants such as sulfur or barium present in the water, do not
evaporate. Over the time, as these substances concentrate in the remaining water, they can become harmful
resulting in damaging the gutter system and the evaporative cooling pads.
Any disregard of the above warnings and recommendations shall exonerate the manufacturer from any liability
and shall be considered improper use of the gutter system.
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© Munters AB, 2018
2.1 Delivery check
Upon receipt, inspect the item for external damage and if found, inform the forwarding agent without delay.
Check the data on all the rating plates of the pumps, especially voltage and frequency.
2.2 Packaging and transport
Since the gutter segments consist of numerous long pieces, care should be taken when the pieces are handled
and stored. If the pieces are placed on a heap, the sides of the heap should be supported to prevent the heap
from collapsing and causing injury.
2.3 Typical installations
Typical ways in which the WDP system in combination with CELdek®evaporative cooling pads can be
installed in structures are indicated in the diagrams below. The diagrams depict structures as seen from above
with the relative placement of Euroemme®extraction fans and CELdek®evaporative cooling pads. The
WDP system is intended for installation on the outside of the structure.
CELdek® evaporative cooling pads Extraction fans
CELdek®evaporative cooling pads
WDP gutter system
Structure wall
7
© Munters AB, 2018
3. Installation
3.1 Mounting the brackets
The gutter sections are manufactured in five different
lengths, 3m, 2.4, 1.8, 1.2 and 0.6m. An installation
can be compiled by using different combinations
of the lengths. Use Diagram 1 to decide on the
placement of the various lengths of gutter.
Mount each bottom bracket using q.ty 2, Ø8 Fisher.
Mount each top bracket using q.ty 2,Ø6 Fisher.
ALIGNMENT!
Verify the distance between the top and bottom
brackets continuously. Place the bottom support
gutter every meter and the top gutter support where
it is required.
Ensure that all the top brackets and a the
bottom brackets are mounted on the same
horizontal level. Use a spirit-level or other
suitable device. (see pictures on side)
H+212
8
© Munters AB, 2018
Gutter sections
Available lengths: 0.6 m – 1.2 m – 1.8 m – 2.4 m – 3.0 m
It is recommended to use as many as possible 3.0 m sections, than complete the required length with a shorter
cut on size section.
Please note that total length must be a multiple of 0.6 m.
Examples:
1. total length 12 m: use q.ty 4 sections with 3.0 m length;
2. total length 16.8 m: use q.ty 5 sections with 3.0 m length and q.ty 1 section with 1.8 m length.
Water supply and drain
Using 0.75 hp pump on 100 mm thick evaporative pad it is suggested to place a water supply every 24 m and
a water drain every 12 m.
Using 0.75 hp pump on 150 mm thick evaporative pad it is suggested to place a water supply every 16 m and
a water drain every 12 m.
If several water connections are required, divide distance between them uniformly.
q.ty 2 water connections L/4 L/2 L/4
q.ty 3 water connections L/6 L/3 L/3 L/6
q.ty 4 water connections L/8 L/4 L/4 L/4 L/8
Diagram 1
9
© Munters AB, 2018
3.2 Assembling the bottom gutter
Join the section of the bottom gutter, then start
applying silicon in correspondence of the holes. Fix the
bottom gutter using q.ty 6, M6 x 16 hex screws and its
nuts.
Apply silicon to the groove on the bottom gutter as
indicated in the picture on the left. Do it for both sides
of the gutter.
To ensure a watertight seal, apply silicon to both the inside
and outside of the gutter and spread it.
Once the whole bottom gutter length has been
assembled and the silicon cured, wash any debris out by
using water. Lock it on its support as shown in the
picture.
In the 150mm thickness gutter add the extra
CELdek®Pad support supplied every 600mm.
Note: the new CELdek Pad supports are supplied unfolded
(flat).
Before installing the CELdek pad supports, please bend the
flat edges on the dotted lines, forming a square cube like
indicated below. After, please place the extra CELdek Pad
supports inside the bottom gutter every 600mm.
10
© Munters AB, 2018
3.3 Mounting the sides
1. In correspondence of the side panels cut the
bottom gutter at 30mm distance from the
external edge, then bend it flat.
2. Apply the silicon on the bottom part of the sides
and in correspondence of the holes.
3. Fix the side to the bottom gutter by q.ty 6, M6x16
hex-screws and its nuts. Tighten bolts and nuts
by mean of q.ty 2, Ø 10 spanner.
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