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LAARS Heating Systems
Page 2
TABLE OF CONTENTS
SECTION 1.
General Information
3C.
3D.
1A.
1B.
1C.
1C-1.
SECTION 4.
Maintenance
1C-2.
1D.
Introduction ................................................... 3
Flow Requirements ...................................... 4
Variable Water Flow Systems ...................... 4
A Special Note About 3-Way
Water Valves ................................................ 5
System Pressure Requirements ................... 5
Warning Regarding Chilled
Water Systems ............................................. 5
SECTION 2.
Installation
2A.
2B.
2B-1.
2B-2.
2C.
2D.
2E.
2F.
2G.
2H.
Boiler Placement .......................................... 5
Installation of Indoor Boilers ......................... 6
Combustion Air Supply ................................. 6
Venting ......................................................... 7
Installation of Outdoor Heater ....................... 7
Freeze Protection ......................................... 8
Gas Supply and Piping ................................. 8
Electrical Wiring ............................................ 9
Piping of System to Boiler ............................ 9
Filling Fully-Connected System .................. 10
SECTION 3.
Operation
3A.
3B.
Initial Start Up ............................................. 10
To Start Up System .................................... 11
To Turn Off Boiler ....................................... 12
To Shut Down System ................................ 12
................................................................... 12
SECTION 5.
Troubleshooting and Analysis of
Service Problems
................................................................... 13
SECTION 6.
Conversion of VW from Indoor
to Outdoor Models
................................................................... 15
SECTION 7.
Parts Description and Order Numbers
................................................................... 18