- Laars Heating Systems installation and/or operation water heater

LAARS HEATING SYSTEMS
Page 2
SECTION 1.
General Information
1A. Introduction................................................... 3
1B. Heater Identification ..................................... 3
1C. Flow Requirements ...................................... 4
1D. Water Chemistry........................................... 4
SECTION 2.
Installation
2A. Heater Placement......................................... 4
2B. Installation of Indoor Heaters ....................... 4
2B-1. Combustion Air Supply ................................. 6
2B-2. Venting ......................................................... 6
2C. Installation of Outdoor Heaters..................... 7
2D. Gas Supply and Piping ................................. 7
2E. Electrical Wiring............................................ 8
2F. Water Piping of System ................................ 8
2G. Water Expansion .......................................... 9
2H. Pump Performance and Installation ........... 10
2I. Water Pressure .......................................... 16
2J. Tank Installation ......................................... 16
2K. Two-Temperature System .......................... 16
SECTION 3.
Operation
3A. Controls - General ...................................... 16
3B. Initial Start-Up............................................. 17
TABLE OF CONTENTS
3C. To Start Up System .................................... 18
3D. To Turn Off Heater ....................................... 19
3E. To Shut Down System ................................ 19
SECTION 4.
Maintenance
................................................................... 19
SECTION 5.
Troubleshooting and Analysis of
Service Problems
................................................................... 20
SECTION 6.
Parts Descriptions and Order Numbers
................................................................... 22
SECTION 7.
Outdoor Parts Descriptions and
Order Numbers
................................................................... 30
SECTION 8.
Optional Parts Descriptions and
Order Numbers
................................................................... 32