Aira HCV - Default Chapter; Table of Contents

CONTENTS
HCV & HCVR Evaporative Cooling & Gas Heating
Page 2 of 26
Contents
GENERAL INFORMATION ............................................................................................................ 4
Unit Configurations / Components ................................................................................................ 7
OPERATING INSTRUCTIONS ....................................................................................................... 8
Wall Control Options ................................................................................................................... 8
General Operation ...................................................................................................................... 9
HCVR Return Air Models .............................................................................................................. 9
INSTALLATION INSTRUCTIONS ................................................................................................ 10
Installation Guidelines ............................................................................................................... 10
Installation .............................................................................................................................. 10
On receipt of equipment ......................................................................................................... 10
Unit Location ........................................................................................................................ 10
Flue ..................................................................................................................................... 11
Gas Supply ........................................................................................................................... 11
Electrical Supply ................................................................................................................... 11
Water Supply ........................................................................................................................ 12
Water Setup ......................................................................................................................... 12
Water Supply ........................................................................................................................ 12
Dump Valve (Optional) .......................................................................................................... 13
Drain ................................................................................................................................... 13
Roof Stands ............................................................................................................................. 14
COMMISSIONING ..................................................................................................................... 15
Cooling Section ........................................................................................................................ 15
Heating Section ........................................................................................................................ 16
Temperature Control ................................................................................................................. 17
UNIT SERVICE .......................................................................................................................... 18
Blower and Drive Components ................................................................................................... 18
Cooling Section ........................................................................................................................ 18
Heating Section ........................................................................................................................ 19
Clean and Service ................................................................................................................. 19
Remove Pilot Assembly and Burner Bars .................................................................................. 19
Remove Main Burner Bars ...................................................................................................... 19
Cleaning burners ................................................................................................................... 19
Gas Controls ......................................................................................................................... 20
Fault Finding ............................................................................................................................ 20
Cooling Section ..................................................................................................................... 20
 Inadequate cooling ................................................................................................... 20
 Pilot flame goes out.................................................................................................. 21
 Pilot flame does not light .......................................................................................... 21
 Burners do not come on when pilot flame is alight and room thermostat is ‘Made’. ........... 21
 Unit overheats and locks out limit switch .................................................................... 22