Zehnder Rittling Centair CMEV.4e Installation Instructions Manual Download | Manualshive

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Centair CMEV.4e / CMEV.4eHT

Central Mechanical Extract Ventilation

Installation Instructions

CMEV.4e / CMEV.4eHT

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Summary of Contents for Centair CMEV.4e

Page 1: ...Centair CMEV 4e CMEV 4eHT Central Mechanical Extract Ventilation Installation Instructions CMEV 4e CMEV 4eHT ...

Page 2: ...Specification 3 2 0 Installation Instructions 4 2 1 General Preparation 4 2 2 Positioning Application 5 2 3 Mounting 5 2 4 Ducting Guidelines 6 2 5 Electrical 7 3 0 On Site Commissioning 11 4 0 Performance Graphs 13 5 0 Guarantee 14 Contents ...

Page 3: ...ppropriate 125mm Grilles ZGS2 Hardwired switch providing switching between low and high option ZGS1 Hardwired switch providing switching between low medium and high option 1 1 7 Warning This appliance can be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruc...

Page 4: ...d to cut out the spigot blank and connect duct See Figure 1 2 1 2 125mm duct should be used to provide the best performance levels required for compliance with building regulations The CMEV 4e range has been tested with both 125mm and 100mm round ducting Note Reducing ductwork to 100mm will increase system resistance and affect overall specific fan power ratings Technical Services can be contacted...

Page 5: ...ase when positioning mounting the product to a surface 2 2 3 Figure 1 Optional Fifth Spigot 2 2 3 Figure 2 Mounting Orientations 2 3 Mounting 2 3 1 Determine the duct inlet and exhaust configuration and the best orientation for the unit for this installation also taking account of the access to the electrical services and whether the fifth inlet port supplied capped off located on the unit base ma...

Page 6: ...y fix ducts using metal jubilee clips or heavy duty plastic cable ties and appropriate non hardening sealant for air tightness WARNING Do not use screws for connection and ensure jubilee clips are not over tightened 2 4 6 Flexible Ducting Ensure ducting lengths are kept to a minimum and ducting is pulled taut so that it is smooth and straight Where bends are necessary and where ducting is run in r...

Page 7: ... see diagrams a triple pole or a double pole switch having a minimum contact separation of 3 0mm must be used to provide isolation for the unit 2 5 7 The recommended switches sensors for use with either models are For CMEV 4e wire using either switch live lighting circuit with without external sensor or via a Zehnder ZGS2 2 position switch with an external sensor see below for function details For...

Page 8: ...ed 2 6 2 Two speed control via ZGS2 switch CMEV 4eHT only 2 6 3 Three speed control via light switch for trickle boost speeds and medium speed activation via remote sensor CMEV 4e only 2 6 4 Three speed control via ZGS2 switch for trickle boost speeds and medium speed activation via remote sensor CMEV 4e CMEV 4eHT 2 6 5 Three speed control via ZGS1 switch CMEV 4eHT only ...

Page 9: ...m the mains supply before removing the fan motor assembly 1 Remove external locking screw 1 CAUTION Fan motor assembly is free to move after the next operation in ceiling installations please ensure the fan is manually supported during the following steps 2 Rotate anti clockwise noting LINE INDICATOR moving from the LOCKED to UNLOCKED position See Figure 5a 3 Fan motor assembly can now be lowered ...

Page 10: ...w Pin 2 is a volt free contact for additional sensors 6 Secure the cable within the internal cable clamp provided 7 Carefully realign the lid to the pot controls and respective screw connections and secure with the three connecting screws 2 7 5 Figure 6 Connecting BMS Wiring Step 1 Step 3 Step 2 Step 4 Step 6 Step 5 Step 7 BMS Cable Pin Function Conection to External Circuit 1 Speed 0 10V positive...

Page 11: ...ning 3 1 Overview 3 1 1 This section covers set up configuration of the unit on installation and altering pre set factory settings Dependant on which model has been installed the following set up and configuration will apply 3 1 2 CMEV 4eHT Only Greenwood TimerSMARTTM and Greenwood HumidiSMARTTM The CMEV 4eHT features a fully automatic integral timer function and humidity function which monitors t...

Page 12: ... extract valves and also the pot settings for trickle and boost speeds on the front page of this installer guide Figure 8 Speed Pot Setting Adjustment Panel Note Fan performance can be adjusted between these set points for further fine tuning as the motor is 100 variable in range 3 1 8 Valve Set up Performance levels to be verified at the extract valves using an appropriate method such as a rotati...

Page 13: ...13 4 0 Performance Graphs 4 0 1 Airflow Characteristics for CMEV 4e CMEV 4eHT Models ...

Page 14: ...e as standard with the option to extend to a 6 Year Guarantee subject to registration Terms and conditions apply 5 1 1 This does not affect your statutory rights 5 1 2 Full details available on request from 44 0 1276 408404 or www greenwood co uk info greenwood co uk ...

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Page 16: ...ferred to are in millimetres unless otherwise shown Zehnder Group UK Ltd reserves the right to change specifications and prices without prior notice Copyright Zehnder Group UK Ltd 2021 Zehnder Group UK Limited Watchmoor Point Camberley Surrey GU15 3AD Customer Services 44 0 1276 408404 Technical Services 44 0 1276 408402 Email info greenwood co uk Web www greenwood co uk 05 10 874 Issue 7 May 2021...

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