2579085_1412_ME Planning Manual -
Contents
1. supply line Drain vent Water drain line AHU drain Fig 1 Typical system Nortec ME Control internal installation 6 System overview 2 2 1 2 Typical system Nortec ME Control external installation i Electrical isolator Water supply line Pressure equalisation pipe Air flow direction d Tel ar 2 AI x e 9 _ Nava AHU drain 17 Water drain line Fig 2 Typical system Nortec ME Control external installation System overview 7 Schematic flow diagram Nortec ME Control AHU Pa EA ee ARI Shut off valve with strainer Inlet solenoid valve NC Drain vent to duct Water tank Stage pumps 2 max 5 Gravity solenoid drain valve NO Drain trap building side Tundish building side Fig 3 Schematic flow diagram Nortec ME Control internally mounted I Hydraulic module en E Shukom valve with strainer Inlet solenoid Pressure valve NC equalisation Evaporative cassette Water tank Stage pumps 1 max 5 Gravity solenoid drain valve NO Drain vent to duct Drain trap building side Tundish building side Fig 4 Schematic flow diagram Nortec ME Control externally mounted2. System selection Nortec ME Direct Feed Selection Glass Fibre Polyester Media Media No Software calculates Module required Software selects Droplet No Override to add Droplet Evaporative Module Separator Separator Width Height selected by Yes Software calculates Module amp Droplet separator Efficiency and Droplet Software Separator Yes Software calculates Module amp Droplet separator gt No Inline UV Yes Add selected item to order Internal Software calculates parts required Installation Method Metric Kit Software calculates parts required External Imperial Kit al Software calculates parts required gt No Blanking Kit Yes Software calculates parts required Cu No No Inlet Outlet and Purge Valves Required Yes Software calculates Parts required Control Panel ON OFF Control i m Add selected item to order Required Stage Control Add selected item to order gt No Stage Valve Kit Not suitable for ON OFF Yes Add selected item to order Control 30 System selection charts CONSULTING SALES AND SERVICE U S A 826 Proctor Avenue Ogdensburg NY 13669 CANADA 2740 Fenton Road O
3. 8 System overview Functional description The water tank is filled up to a preset upper level via the level controlled inlet solenoid valve NC When the water level in the water tank drops below a certain limit the level controlled inlet solenoid valve opens until the upper limit is reached again The Nortec ME Control provides On Off or stage control by means of the Nortec ME Control control unit and the stage pumps The Nortec ME Control control unit processes analog sensor control signals and uses them to control the stage pumps In case of a humidification cooling request with activated On Off control the inlet solenoid valve NC opens and all stage pumps start and the water flows to the distribution header above the evaporative cassettes In case of a humidification cooling request with activated stage control the inlet solenoid valve NC opens then one two three four or all five stage pumps start depending on the demand signal and evaporative module size and the water flows to the distribution header above the evaporative cassettes The distribution pipes inside the distribution header evenly supply the water to the entire surface of the evaporative cassettes where it flows down and humidifies the air flowing through the evaporative cas settes The excess water not used for humidification flows to the water tank To prevent accumulation of mineral residues and the formation of germs in the water tank the tank is completely
4. drained periodically interval or time controlled Additionally further hygiene functions can be activated Operation dependent draining of the water tank fill cycle conductivity temperature or time controlled System overview 9 2 2 2 Nortec ME Direct Feed 2 2 2 1 Typical system Nortec ME Direct Feed internal installation ot 1 Blanking plates Control unit Electrical a isolator Evaporative module Drain valve Stage valve W Hydraulic manifold withyg Supply valve optional supply valve drain valve and stage valve Water supply line Shut off valve Air flow direction Purge valve AHU drain N t Water drain line t Fig 5 Typical system Nortec ME Direct Feed internal installation with optional valves 10 System overview 2 2 2 2 Typical system Nortec ME Direct Feed external installation Air flow direction AHU drain Control units Electrical p isolat o LNN Z x gt Water supply line Shut off valve Purge valve Hydraulic manifold with optional supply valve drain valve and stage valve Water drain line Fig 6 Typical installation Nortec ME Direct Feed external installation System ov
5. only 14 The humidifier shall be designed to be fully evaporative so that there is no aerosol carry over which might carry microbes 15 The humidifier shall be commissioned by a customer services engineer approved supplier or other suitably trained individual Equipment Supplier The system is to be manufactured by Condair plc Artex Avenue Rustington LITTLEHAMPTON West Sussex BN16 3LN UK Tel 01903850200 Fax 01903 850 345 email sales condair com web www condair co uk 28 Specification 5 System selection charts 5 1 System selection Nortec ME Control Evaporative Media Glass Fibre Media Selection e No Polyester Dosing Pump Media M Yes gt Software selects correct Dosing Pump option e No Software selects Evaporative Module Override to add Software selects Droplet No Droplet Separator Evaporative Module Separator C J gt f i Width Height selected
6. simple installation 14 Amaximum of 5 stage control shall be available as standard and controlled by up to 5 24Vdc elec tronically commutated pumps which require no mechanical alteration to control flow rates 15 Each humidifier must include a separate programmable control unit The control unit must provide for fully automatic control of the humidification system 16 The control unit will include a touch screen control unit that allows software based commissioning and shows detailed operational service and fault conditions 17 Where necessary the control unit may be located up to 10 meters away from the evaporative module It shall be pre wired with 5 m 197 of cable 26 Specification 18 The control unit shall be capable of accepting the following methods of humidity control Humidistat thermostat or BMS interlock Integral programmable on off timer Nortec ME Control 0 5V 1 5V 0 10V 2 10V 0 16V 3 2 16V 0 20V 0 20mA 4 20mA 19 The control unit will have both a service time counter and real time hours run counter in addition to a PureFlo Ag counter 20 The control unit will initiate and control water quality dependent cleaning cycles to control the build up of concentrates in the Module Tank 21 The control unit must initiate timed drain down of the module tank at least once every 24hrs of in activity to prevent stagnation In the event of no demand for humidity the tank will drain and remain empty 2
7. 0 mm 4 75 F85 150 mm 6 85 F95 200 mm 8 95 Polyester P85 200 mm 8 85 P95 300 mm 12 95 The droplet separator cassettes are available in two different materials and must be used if face velocity exceeds 3 5 m s 689 fpm Material Media depth Nominal dimensions Glass fibre 35 mm 1 38 Polyester 65 mm 2 56 Note a deeper tank is required when P95 evaporative cassettes and droplet seperator are selected System overview 13 2 4 Evaporative module dimensions internal install Variable dimension A Width 215 mm 0 625 p 015 mm 0 625 EN Variable dimension B Height 667 mm 26 26 min 50 mm 2 Fig 9 OMEN rs elt ae module Nortec ME Control internal install Variable dimension A Width Variable dimension B Height 15 mm 0 625 443 mm 17 44 505 mm 19 92 Dimension C Depth Fig 10 Dimensions evaporative module Nortec ME Direct Feed internal install 14 System overview 2 5 Evaporative module dimensions external install Variable dimension A Width Variable dimension B Height 443 mm 17 44 505 mm 19 92 min 50 mm 2 Dimension C Depth Fig 11 Dimensions evaporative module Nortec ME Control and ME Direct Feed external install System overview 15 2 6 Clearance requirements hydraulic modules external i
8. 151 mm 5 94 REQUIRED AHU WALL Fig 13 Dimensions clearances Nortec ME Direct Feed hydraulic manifold external install System overview 17 Dimension Internal External Internal External Nortec ME Nortec ME Nortec ME Nortec ME Control Control Direct Feed Direct Feed A Width 604 mm 23 78 754 mm 29 69 904 mm 35 59 1054 mm 41 50 1204 mm 47 4 1354 mm 53 31 1504 mm 59 21 1654 mm 65 12 1804 mm 71 02 2104 mm 82 83 2254 mm 88 74 1954 mm 76 93 2404 mm 94 65 2554 mm 100 55 2704 mm 106 46 2854 mm 112 36 3004 mm 118 27 B Height 625 mm 25 750 mm 30 875 mm 35 1000 mm 40 1125 mm 45 1250 mm 50 1375 mm 55 1500 mm 59 1625 mm 64 1750 mm 69 2000 mm 79 2125 mm 84 2250 mm 89 2375 mm 94 1875 mm 74 2500 mm 99 2625 mm 104 2750 mm 109 2825 mm 114 3000 mm 118 C Depth 667 mm 26 26 443 mm 17 44 505 mm 19 92 with elbow connector fitted Water supply connector 215 mm 0 625 compression fitting 215 mm 0 625 push fit connector Water drain connector tank 254 mm 2 125 Water drain connector 228 mm 1 125 215 mm 0 625 push fit connector hydraulic module manifold System weights F
9. 2 Systems 900 mm 35 4 or wider can be supplied with a submerged UV water treatment system that kills micro organisms in the reservoir Fault detection included 23 The humidifier shall be designed to be fully evaporative so that there is no aerosol carry over which might carry microbes 24 The humidifier shall be commissioned by a customer services engineer approved supplier or other suitably trained individual 25 Conductivity option shall be available 26 USB fault log download software upgrade capability 27 Modbus connectivity included as standard 28 BMS options Bacnet LonWorks shall be available Equipment Supplier The system is to be manufactured by Condair plc Artex Avenue Rustington LITTLEHAMPTON West Sussex BN16 3LN UK Tel 01903850200 Fax 01903 850 345 email sales condair com web www condair co uk Specification 27 4 2 Specification for the Nortec ME Direct Feed General 1 The humidifier will comply fully with New Approach CE Directives 2 The humidifier evaporative glass fibre material shall be A2 S2 DO UL Class 1 fire rating and be non particle releasing 3 The humidifier should have the option of utilising polyester evaporate material with a fire rating DIN EN 53438 Class F1 4 The humidifier shall be powered by a 100 240V single phase 50 60Hz power supply with a low power consumption of less than 125W 5 The humidifier shall be designed to optimise the airfl
10. EE 2579085 EN 1412 G V AN S NA WU U US j ld UON Ce EA PLANNING MANUAL Adiabatic air humidification air cooling system Nortec ME nortec Humidification and Evaporative Cooling Thank you for choosing Nortec Manufacturer Condair Plc Artex Avenue Rustington Littlehampton West Sussex BN16 3LN UK TEL 44 0 1903 850 200 FAX 44 0 1903 850 345 uk sales condair com www condair co uk Proprietary Notice This document and the information disclosed herein are proprietary data of Condair Plc Neither this document nor the information contained herein shall be reproduced used or disclosed to others without the written authorization of Condair Plc except to the extent required for installation or maintenance of recipient s equipment Liability Notice Condair Plc does not accept any liability due to incorrect installation or operation of the equipment or due to the use of parts components equipment that are not authorized by Condair Plc Copyright Notice Copyright 2014 Condair Plc All rights reserved Technical modifications reserved Contents 2 2 1 2 2 1 1 2 2 1 2 2 2 2 2 2 2 1 2 2 2 2 2 3 2 4 2 5 2 6 2 7 2 8 3 1 3 2 3 3 4 1 4 2 5 1 5 2 Introduction Notes on the planning manual System overview System versions System description Condair ME Control Typical system Condair ME Control internal installation T
11. Yes Software selects Evaporative Module amp Droplet Separator Efficiency and Droplet by Separator Software Yes gt Software selects Evaporative Module amp Droplet Separator gt No In line UV Yes gt Add selected item to order p No PureFlo Ag gt Yes gt Add selected item to order Internal gt Add selected item to order Installation Method Software calculates parts required External Imperial Kit Software calculates parts required gt No Blanking Kit Yes gt Software calculates parts required Control Panel gt Software selects control panel gt No Submerged UV One Bulb System 900mm 1650mm Wide Unit gt Add selected item to order Yes Two Bulb System 1800mm 2250mm Wide Unit gt Add selected item to order Three Bulb System 2400mm 3000mm Wide gt Add selected item to order Leak Detection Chi No Yes gt Add selected item to order Remote Fault No Yes Add selected item to order Conductivity m No Monitoring Yes Add selected item to order Freeze Protection Ch No Stat Yes gt Add selected item to order r gt No Connection to BMS BacNet Option Add selected item to order Yes LonWorks Option Add selected item to order Software selects Hydraulic Module Quantity of Pumps blanking caps Hydraulic Module gt No Cover M Yes gt Add selected item to order System selection charts 29 5 2 Evaporative Media
12. aws Below are example water conditions that would allow a Nortec ME to operate within specification Parameter Content in supply water Concern Temperature lt 20 C 68 F Warm water favours growth of bacteria Aluminium No specific concerns Ammonium lt 0 50 mg l Odour passed to air Calcium lt 300 mg l Scale formation Chloride lt 300 mg l Corrosion of stainless steel Colour None Not directly a concern Copper lt 1 mg l Deposits and corrosion stimulation Conductivity lt 650 uS cm 1 at 20 C 68 F Total hardness and scale formation pH 6 5 to 9 5 Acid or Alkali damage to equipment ih 0 5 mg l Depositformation onoxidation anda critical support role in Legionella growth Manganese lt 0 1 mg l Deposit formation Nitrate No specific concerns Nitrite No specific concerns Odour Acceptable to users Smell passed to air Sulphate 250 mg l No specific comments Sodium No specific concerns Total organic carbon No specific concerns Turbidity lt 5 NTU No specific concerns 24 Installation requirements Parameter Content in supply water Concern Colony count 22 C lt 1000 cfu ml Indicator of contaminated water supply Coliform bacteria lt 10 cfu 100 ml Indicator of poor water quality Legionella bacteria lt 50 cfu 1000 ml Risk of Legionella Pseudomonas species lt 10 cfu 100 ml Indicator of slime forming po
13. erview 11 Schematic flow diagram Nortec ME Direct Feed AHU eso Stage valve _ _ A Hydraulic manifold optional Shut off Inlet solenoid valve with N N valve NC strainer Evaporative cassettes Drain solenoid LZ Purge solenoid valve NO valve NC Drain trap building side Tundish building side Fig 7 Schematic flow diagram Nortec ME Direct Feed System internally mounted AHU Stage valve RES OH Hydraulic manifold optional Shut off Inlet solenoid Valve with valve NC strainer 2x Drain solenoid valve NO LZ Purge solenoid valve NC Drain trap building side Tundish building side Fig 8 Schematic flow diagram Nortec ME Direct Feed externally mounted Tundish building side 12 System overview 2 3 Functional description As standard the Nortec ME Direct Feed is operated with On Off control requires a drain and a supply valve fitted to the hydraulic manifold both valves available as options and a customer supplied On Off control or the optional direct feed On Off control unit Equipped with the optional stage valves and the optional direct feed stage control unit stage control can be established In case of a humidification cooling request with standard On Off control the drain solenoid valve NO closes and the inlet solen
14. inspection commissioning and maintenance we recommend a minimum free space of 600 mm 24 before and after the evaporative module Air flow direction 395 mm 15 6 Recommended service access 600 mm 24 Recommended service access 600 mm 24 min 200 mm 7 9 Dimension a ME Control internal mounting 272 mm 10 7 ME Control external mounting 111 mm 4 4 ME Direct Feed external mounting 111 mm 4 4 ME Direct Feed external mounting 111 mm 4 4 Fig 14 Positioning of the evaporative module 22 Installation requirements The following side and top clearances must be observed when positioning the unit min 10 mm 0 4 min 10 mm 0 4 min 20 mm 0 8 Fig 15 Minimum side and top clearance for evaporative module If possible the evaporative module should be positioned on the negative pressure i e suction side of the fan Position 1 in the diagram below The maximum matrix face velocity is 3 5 m s 689 fom without droplet separator or 4 5 m s 886 fom with droplet separator for both installation positions Note Laminar air flow must be provided for system efficiency and to avoid droplet carryover Position 1 Negative pressure fan suction Position 2 Positive pressure fan discharge eve Fig 16 Mounting position in relation to the fan position Installation requi
15. ll be glad to assist you 4 Introduction System overview System versions The Nortec ME is available in two basic system versions Control system water is circulated with pumps in the evaporative module and periodically drained Direct feed system water is drained after flowing down the evaporative cassettes Nortec ME Control System Model designation Description Nortec ME Control Complete system with software configurable control unit with display Hydraulic module with pumps can be mounted internally or externally to the AHU duct Nortec ME Direct Feed System Model designation Description Nortec ME Direct Feed The standard version includes the evaporative module and a hydraulic manifold without valves The hydraulic manifold must be equipped with a drain and a supply as mini mum If stage control is required the hydraulic manifold can be equipped with stage valves additionally The purge is to be fitted in the water supply line near the water inlet All valves are available as options or must be sup plied by the customer Additionally two optional control units one for On Off control and for stage control are available System overview 5 2 2 System description 2 2 1 Nortec ME Control 2 2 1 1 Typical system Nortec ME Control internal installation i Electrical isolator A
16. mental friendly amp 100 biodegradable chemical which provides a prophylactic disinfection dose and is effective against all types of microorganisms including legionella and E coli DISIFIN XL may be added to the tank whilst the system continues operating and left to dissolve away naturally Please refer to the maintenance section for further guidance Note Adding DISIFIN XL or other disinfection chemicals will increase the conductivity in the tank This should be taken into account on systems where a conductivity control system is in use refer to the software section in the operation manual If you are in any doubt about the suitability of water quality please contact your Nortec representative who will be pleased to support you Installation requirements 25 4 Specification 4 1 Specification for the Nortec ME Control General 1 The humidifiers will comply fully with New Approach CE Directives and UL requirements 2 The humidifier evaporative glass fibre material shall be A2 S2 DO UL Class 1 fire rating and be non particle releasing 3 The humidifier should have the option of utilising polyester evaporate material with a fire rating DIN EN 53438 Class F1 4 The humidifier shall be powered by a 100 240V single phase 50 60Hz power supply with a low power consumption of less than 278W 5 The humidifier shall be designed to optimise the airflow across its surface area and allow evapora tion of the desired quantit
17. nking Kit to secure Nortec ME system and prevent air bypass within the duct AHU Hydraulic Module Cover Provides additional mechanical protection for the hydraulic module Internal Installation Kit Kit to install the hydraulic module inside the duct AHU External Installation Kit Kit to install the hydraulic module outside the duct AHU Remote Fault Indication Provides volt free contacts for remote fault and service requirement indica tion for BMS systems Freeze Protection Stat Low temperature protection system to prevent damage to the Nortec ME in winter conditions BMS Connectivity LonWorks BacNet available separately BMS communication protocol for remote system monitoring Leak Detection Provides additional fault indication for the Nortec ME by monitoring for stand ing water detected in duct AHU Conductivity monitoring Water conductivity controlled system with thermal compensation to maintain hygiene and minimise media scaling System overview 19 Options Nortec ME Nortec ME Control Direct Feed Submerged UV e Submerged ultra violet steriliser installed in the evaporative module tank to enhance system hygiene Available to suit systems 900 mm 35 43 wide or greater PureFlo Ag Silver ion anti microbial system installed in the water supply line to enhance system hygiene with a residual effect In Line UV Ultra violet s
18. nstall MINIMUM 25 mm 0 98 CLEARANCE TYP HYDRAULIC MOUNTING BRACKET DETAILA 80 mm 3 1 5 HOLE 6 91 4 33 n MINIMUM CLEARANCE OF 300 mm 11 81 REQUIRED 325 mm 310 mm 12 80 12 20 AHU WALL DETALA WHEN PLANNING THE INSTALLATION OF A ME CONTROL SVBICAL HYDRAULI SYSTEM WITH EXTERNAL HYDRAULICS THE CLEARANCE REQUIRED OUTSIDE THE AHU FOR THE FOLLOWING SHOULD BE CONSIDERED DISTRIBUTION HOSES PRESSURE EQUALISATION FEED THROUGH PLATES INLET ASSEMBLY DRAIN PLUMBING DRAIN TRAP MOUNTING POSITION Fig 12 Dimensions clearances Nortec ME Control hydraulic module external install 16 System overview MINIMUM 25 mm 0 98 CLEARANCE TYP 450 mm 17 72 PURGE VALVE normally closed STAGE VALVES CH normally open INLET VALVE DRAIN VALVE normally closed normally open Ele E EI E N Bg 5 3 1 2 4 SI 182 mm 7 17 g coil voltage 24 Vdc DETAILA WHEN PLANNING THE INSTALLATION OF A ME DIRECT FEED SYSTEM WITH EXTERNAL HYDRAULICS THE CLEARANCE REQUIRED OUTSIDE THE AHU FOR THE FOLLOWING SHOULD BE CONSIDERED DISTRIBUTION HOSES FEED THROUGH PLATES INLET ASSEMBLY DRAIN PLUMBING DRAIN TRAP MINIMUM CLEARANCE OF
19. oid valve NC opens and the water flows to the distribution header above the evaporative cassettes In case of a humidification cooling request with optional stage control unit the drain solenoid valve NO closes and the inlet solenoid valve NC opens Depending on the demand signal and the evaporative module size additionally stage valve two three four and five open to supply water to the distribution header of the corresponding evaporative cassettes bank The distribution pipes inside the distribution header evenly supply the water to the entire surface of the evaporative cassettes where it flows down and humidifies the air flowing through the evaporative cassette matrix The excess water not used for humidification flows to the water tank and then directly to the drain Both optional direct feed control units On Off control unit and stage control unit support time based flushing of the water supply line once a purge valve available as option is fitted in the supply line Every 20 hours the water supply line is flushed via the purge valve to prevent water stagnation in the water supply line which can lead to the grow of micro organisms in the water supply line Evaporative cassettes droplet separator The evaporative cassettes are available in two different evaporative materials with different humidifica tion efficiencies Material Type Cassette depth Maximum humidification efficiency Glass fibre F75 10
20. or system weights please contact your Nortec representative 18 System overview 2 7 2 8 Operating range Operating parameter Range 10 C 50 F 60 C 140 F 20 C 68 F Maximum matrix face velocity without droplet separator 3 5 m s 689 fpm 4 5 m s 886 fpm 2 5 bar 29 72 5 psi see chapter 3 3 Inlet water quality requirements 100 240 V 1 50 60 Hz lt 278 W 5 stages no options fitted Minimum continuous operating air temperature Maximum continuous operating air temperature Maximum feed water temperature Maximum matrix face velocity with droplet separator Admissible water supply pressure Water quality Electrical supply Power consumption Nortec ME Control Options Options Nortec ME Control Nortec ME Direct Feed Glass fibre Media Composite non particle releasing glass fibre media with anti microbial im pregnation and A2 S2 dO UL Class 1 fire rating Available in 75 100 mm 4 85 150 mm 6 and 95 200 mm 8 ef ficiencies Polyester Media Robust patented synthetic media with hygroscopic impregnation and DIN EN53483 Class F1 fire rating Available in 85 200 mm 8 95 300 mm 12 efficiencies Droplet Separator Droplet catching matrix increasing maximum face velocity limit without drop let carry over from 3 5 m s 689 fpm to 4 5 m s 886 fpm Evaporative Module Bla
21. ow across its surface area and allow evaporation of the desired quantity of water with no carry over of water droplets into the airstream 6 The rate of evaporation shall be dictated by the air volume and temperature humidifier physical di mensions and the matrix depth The depth of matrix used shall govern the efficiency of the system up to 95 7 The construction of this humidifier will allow for an optional droplet seperator to be fitted should the air velocity be greater than 3 5 m s 689 fpm to ensure no droplet carryover 8 The humidifier shall be evaporative adiabatic type and consequently incorporate a free cooling effect following the enthalpy line on the psychometric chart 9 All evaporative module metalwork shall be 304 stainless steel that includes a water distribution system to ensure uniform delivery of the water across the evaporative surface 10 The hydraulic unit shall be installed either inside or outside the air handling unit to allow for main tenance of the hydraulic unit to be carried out without interrupting the supply air 11 A 5 stage control option shall be available 12 Where necessary the optional control unit may be located up to 10 meters away from the evapora tive module It shall be pre wired with 5 m 197 of cable 13 The option to use the following humidity control methods shall be available Humidistat thermostat BMS interlock 0 10Vdc or 2 10Vdc control signal stage control unit
22. rements 23 3 3 Inlet water quality requirements Nortec Humidity Ltd recommends that the Nortec ME must be connected to a clean wholesome drinking water quality mains water supply For areas of hard water and to minimise scale build up the water supply may be treated by a reverse osmosis system RO Reverse osmosis For Nortec ME systems supplied with RO water it is recommended that the system is operated within the following parameters The use of RO water fed tanks and reservoirs is only permitted as part of a man aged and hygiene monitored water system and should form part of the water system risk assessment System Conductivity Nortec ME Control gt 5 uS cm 1 at 20 C 68 F Nortec ME Direct Feed gt 30 uS cm 1 at 20 C 68 F Other water supplies There is a growing demand to utilise sustainable water sources to help overcome scarcity challenges and recycle water It is possible to use high quality treated effluent for non wholesome applications The following gives guidance on reclaimed water quality that may be acceptable for use within the Nortec ME Effluent treated water must be treated by an appropriate water treatment method and risk assessed to ensure it is safe and suitable for use in the Nortec ME unit It is the responsibility of the user to ensure that the water supply system is part of a managed hygiene monitored water system risk assessed and complies with the local regulations and byl
23. tential Controlled substances N DANGER Many of the following controlled substances are toxic for example vinyl chloride is highly toxic flam mable and carcinogenic and could be evaporated off the matrix and passed to the airflow Therefore it is important to note that any supply water coming from complex waste water which may contain these contaminates should therefore be carefully risk assessed by a water treatment specialist Controlled substances Controlled substances Clostridium perfringens including spores 1 2 dichloroethane Acyamide O SY Epichlorohydrin Fluoride Antimony Lead Arsenic Mercury Benzene Nickel Benzo a pyrene Pesticides Boron Polycyclic aromatic hydrocarbons Bromate Selenium Cadium Tetrachloroethene and Trichloroethene Chromium Trihalomethanes Cyanide Vinyl chloride Water monitoring The Nortec ME water system must be monitored for hygiene as part of the maintenance programme for the building in which it is installed Disinfection Chemical Depending on the system hygiene itis advised that preventative disinfection chemical should be added to the Nortec ME water tank Nortec ME Control only at an appropriate frequency such as a monthly basis Nortec recommends adding disinfection chemical DISIFIN XL to the tank at approx 500 ppm strength on a monthly basis to control microbiological activity DISIFIN XL is a safe non toxic environ
24. teriliser installed in the water supply line to enhance hygiene Dosing Pump Dosing system for use with polyester media to enhance water absorption on system start up Stage Valves Valve kit which facilitates stage control of direct feed systems using customer controls or the Nortec ME Direct Feed stage control unit Available in 2 3 4 and 5 stage versions Inlet Drain and Purge Valve Valve kit for customers who wish to create their own basic on off direct feed control system On Off Control Unit On Off control unit for simple control of Nortec ME Direct Feed systems which includes timed purge function to enhance system hygiene Stage Control Unit Stage control unit for simple analogue control of Nortec ME Direct Feed systems which includes timed purge function to enhance system hygiene 20 System overview Installation requirements 3 1 Requirements regarding the AHU air duct The following requirements regarding the AHU air duct must be observed The AHU air duct floor must be designed with a loading capacity capable of supporting the evapora tive module s weight The weight of the evaporative module must be calculated Please contact your Nortec representative in this matter In the area where the evaporative module is installed the floor of the AHU air duct must offer a plane support lengthwise and crosswise The duct AHU section where the evaporative module is to be installed m
25. ttawa Ontario K1T 3T7 TEL 1 866 NORTEC1 FAX 613 822 7964 1 EMAIL nortec humidity com no rtec WEBSITE www humidity com
26. ust be waterproof Downstream directly after the evaporative module a drain pan with provision for running water to waste must be installed The drain must be connected via a drain trap to the waste water line of the building The drain trap must be sufficiently high so that the drain trap is not emptied by the air pressure in the duct The drain pan and the drain trap must be accessible for cleaning and disinfec tion as part of the periodic maintenance of the system For installation and maintenance sufficiently large maintenance doors before and after the evapora tive module must be available in the AHU air duct The supply air must be filtered We recommend to install an air filter with quality standard F7 EU7 or better before the evaporative module If no air filter or an air filter with lower quality is installed an increased maintenance will result An even air flow over the full cross section of the evaporative module must be guaranteed In case of low ambient temperature the AHU air duct must be insulated to prevent the moist air from condensing inside the duct If the AHU air duct is equipped with a heating coil make sure it is at least 600 mm 24 away from the evaporative module Appropriate clearance must be available for the hydraulic module hydraulic manifold and associated plumbing when installing externally Installation requirements 21 3 2 Requirements regarding the positioning of the evaporative module For
27. y of water with no carry over of water droplets into the airstream 6 The rate of evaporation shall be dictated by the air volume and temperature humidifier physical dimensions and the matrix depth The depth of matrix used shall govern the efficiency of the system up to 95 7 The construction of this humidifier will allow for an optional droplet seperator to be fitted should the air velocity be greater than 3 5 m s 689 fpm to ensure no droplet carryover 8 humidifier shall be evaporative adiabatic type and consequently incorporate a free cooling effect following the enthalpy line on the psychometric chart 9 All evaporative module metalwork shall be 304 stainless steel that includes a water distribution system to ensure uniform delivery of the water across the evaporative surface 10 The evaporative humidifier shall include a patented compact self contained hydraulic unit that in corporates a water tank and up to 5 pumps that can be mounted inside or outside the AHU The hydraulic unit shall include Biomaster antimicrobial additive 11 The hydraulic unit shall be installed either inside or outside the air handling unit to allow for mainte nance of the hydraulic unit to be carried out without interrupting the supply air 12 The humidifier will have a pump assisted drain minimise hygiene cycle duration All tank sizes should drain in lt 15 minutes 13 The humidifier overflow shall be integrated into a single drain connection for
28. ypical system Condair ME Control external installation Condair ME Direct Feed Typical system Condair ME Direct Feed internal installation Typical system Condair ME Direct Feed external installation Evaporative cassettes droplet separator Evaporative module dimensions internal install Evaporative module dimensions external install Clearance requirements hydraulic modules external install Operating range Options Installation requirements Requirements regarding the AHU air duct Requirements regarding the positioning of the evaporative module Inlet water quality requirements Specification Specification for the Condair ME Control Specification for the Condair ME Direct Feed System selection charts System selection Condair ME Control System selection Condair ME Direct Feed 21 21 22 24 26 26 28 29 29 30 Contents 3 1 Introduction 1 1 Notes on the planning manual Limitation The subject of this planning manual is the Nortec ME Evaporative Humidifier and Cooler in its different versions This planning manual contains system overviews of the different versions of the Nortec ME available options notes on installation requirements duct positioning water quality requirements requirements of the supply water to be used unit specifications system selection guide If you have questions after reading this documentation please contact your Nortec representative They wi
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