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Carrier Atmosphera 42EM series - Default Chapter; Table of Contents

Carrier Atmosphera 42EM series
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The photograph on the front cover is for illustrative purposes only and is not part of any offer for sale or contract. The
manufacturer reserves the right to change the design at any moment without prior warning.
1 - INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.1 - Comfort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 - Air quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.3 - Carrier QUALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 - FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1 - General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.2 - Several possible configurations . . . . . . . . . . . . . . . . . .6
2.3 - Operating limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.4 - Physical and electrical data . . . . . . . . . . . . . . . . . . . . . .8
2.5 - Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . .10
3 - SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . .17
3.1 - General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.2 - Precautions against electrocution . . . . . . . . . . . . . . . .17
3.3 - General installation recommendations . . . . . . . . . . . .17
3.4 - Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4 - MAIN COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . .18
4.1 - Fresh air controller . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.2 - Filter and filter access . . . . . . . . . . . . . . . . . . . . . . . . .18
4.3 - Water coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.4 - Aluminium condensate drain pan . . . . . . . . . . . . . . . .19
4.5 - Electric heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.6 - Fan motor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .20
5 - DIFFERENT ATMOSPHERA CONFIGURATIONS 21
6 - CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.1 - Control with room thermostat only . . . . . . . . . . . . . . .23
7 - TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . .24
7.1 - Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
7.2 - Flexible water pipes . . . . . . . . . . . . . . . . . . . . . . . . . .25
7.3 - Technical specification for the heating/cooling
changeover switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
8 - ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
8.1 - Carrier electronic thermostat . . . . . . . . . . . . . . . . . . .26
8.2 - Maestro Zone User Interface . . . . . . . . . . . . . . . . . . .26
8.3 - Wall-mounted base for Zone User Interface . . . . . . . .26
8.4 - Maestro wall-mounted sensor . . . . . . . . . . . . . . . . . . .26
8.5 - Three-speed wall-mounted thermostat for the
numerical Maestro controller . . . . . . . . . . . . . . . . . . . .26
8.6 - Condensate drain pump . . . . . . . . . . . . . . . . . . . . . . . .27
9 - ATMOSPHERA PERFORMANCE DATA . . . . . . . .28
9.1 - Cooling capacity - water coil . . . . . . . . . . . . . . . . . . .28
9.2 - Heating capacity - water coil . . . . . . . . . . . . . . . . . . .30
9.3 - Water coil pressure drops . . . . . . . . . . . . . . . . . . . . . .32
9.4 - Water valve pressure drops . . . . . . . . . . . . . . . . . . . . .33
9.5 - Sound power levels . . . . . . . . . . . . . . . . . . . . . . . . . . .34
9.6 - Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
9.7 - Air flow data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
10 - CODIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
11 - SPECIFICATION GUIDE . . . . . . . . . . . . . . . . . . . .52
TABLE OF CONTENTS

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