Laarsen Associates PW User Manual
Page 2
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