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VAM350~2000J8VEB
Heat reclaim ventilation unit
4P664012-1 - 2021.08
14.4
To install the anchor bolts .............................................................................................................................................. 47
14.5
Duct connections ............................................................................................................................................................ 48
15.1
About connecting the electrical wiring .......................................................................................................................... 50
15.1.1
Precautions when connecting the electrical wiring....................................................................................... 50
15.1.2
Guidelines when connecting the electrical wiring......................................................................................... 51
15.1.3
Wiring connection .......................................................................................................................................... 51
15.1.4
Component electrical specifications .............................................................................................................. 52
15.1.5
Specifications for field supplied fuses and wires ........................................................................................... 53
15.2
Opening the switch box .................................................................................................................................................. 54
15.3
Electrical connections for additional field supplied damper ......................................................................................... 61
15.4
To connect the electrical wiring ..................................................................................................................................... 61
15.5
To connect the monitoring output................................................................................................................................. 63
16.1
About control systems .................................................................................................................................................... 64
16.2
Independent system ....................................................................................................................................................... 65
16.3
Linked operation control system.................................................................................................................................... 65
16.4
Central control system.................................................................................................................................................... 66
16.5
EKVDX option .................................................................................................................................................................. 67
17.1
To change settings .......................................................................................................................................................... 69
Case 1: Change settings with BRC1E53.......................................................................................................... 69
Case 2: Change settings with BRC301B61 ..................................................................................................... 70
Case 3: Change settings with BRC1H ............................................................................................................. 71
17.2
Field settings ................................................................................................................................................................... 72
17.3
Settings for all configurations......................................................................................................................................... 74
17.3.1
About setting 19(29)-0-04 and 19(29)-0-05 .................................................................................................. 75
17.3.2
Independent system....................................................................................................................................... 75
17.3.3
1-group linked-control system ....................................................................................................................... 76
17.3.4
Linked control with more than 2 groups ....................................................................................................... 76
17.3.5
Direct duct connection................................................................................................................................... 77
17.3.6
Central control system ................................................................................................................................... 78
17.3.7
EKVDX option - extra settings......................................................................................................................... 81
17.4
About the controller ....................................................................................................................................................... 82
17.4.1
BRC1E53 controller......................................................................................................................................... 82
17.4.2
BRC301B61 controller .................................................................................................................................... 85
17.4.3
BRC1H controller ............................................................................................................................................ 87
17.5
Detailed explanation of settings..................................................................................................................................... 88
17.5.1
About fresh-up operation............................................................................................................................... 88
17.5.2
About the external damper operation........................................................................................................... 89
17.5.3
About the CO₂ sensor ..................................................................................................................................... 90
17.5.4
About nighttime free cooling operation ........................................................................................................ 94
17.5.5
About the precool and preheat function....................................................................................................... 95
17.5.6
About preventing a feeling of draft................................................................................................................ 95
17.5.7
About 24-hour ventilation.............................................................................................................................. 95
17.5.8
About the ultra-low setting ............................................................................................................................ 96
17.5.9
About the electrical heater operation ........................................................................................................... 96
17.5.10 About external linkage input.......................................................................................................................... 96
17.5.11 About filter contamination check .................................................................................................................. 96
18.1
Overview: Commissioning .............................................................................................................................................. 97
18.2
Checklist before commissioning..................................................................................................................................... 97
18.3
Checklist during commissioning ..................................................................................................................................... 98
18.3.1
About the test run .......................................................................................................................................... 98
20.1
Overview: Maintenance and service .............................................................................................................................. 100
20.2
Maintenance safety precautions.................................................................................................................................... 100
20.2.1
To prevent electrical hazards ......................................................................................................................... 100
20.3
Checklist for maintenance of the heat reclaim ventilation unit .................................................................................... 101
21.1
Overview: Troubleshooting ............................................................................................................................................ 102
21.2
Precautions when troubleshooting ................................................................................................................................ 102
21.3
Solving problems based on error codes ......................................................................................................................... 102
Table of contents
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102
Installer and user reference guide
3
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Troubleshooting
