Laars HWG-M2-150 Installation, Operation And Maintenance Instructions - page 2
Page 2
LAARS HEATING SYSTEMS
To the Installer: After installation these instructions
must be given to the owner or left on or near the
Water Heater.
To the User: This booklet contains important
information that will help you in maintaining and
operating this Water Heater. Please retain it for
future reference.
Warning: Should overheating occur or the gas
supply fail to shut off, turn off the manual gas
control valve to the appliance.
Important: This unit must be installed in accordance
with state and local codes by a qualified installer!
TABLE OF CONTENTS
SECTION 1.
Introduction and Unpacking
1A.
Special Installation Considerations............... 3
1B.
Checklist of Materials Installer
Must Provide ................................................ 3
1C.
Unpacking .................................................... 3
SECTION 2.
Locating and Clearances
2A.
Locating the 9600 HWG ............................... 4
2B.
Locating the Unit for Proper Venting
Distance from the Outside Wall or
Roof Termination .......................................... 4
2C.
Locating Vent Openings on Outside Wall ..... 5
2D.
Locating Unit for Proper Vent Height ............ 5
2E.
Locating Unit with Respect to Ventilation ..... 5
2F.
Locating Unit with Respect to
Storage Tanks .............................................. 5
SECTION 3.
Installation
3A.
Installing Vent Piping Terminal ..................... 5
3B.
Connecting Gas to the 9600
HWG Water Heater ...................................... 6
3C.
Connecting Water System Piping,
Fittings & Accessories .................................. 6
3D.
Tank Temperature Control ........................... 7
3E.
Condensate Drain Connection ..................... 7
3F.
Electrical Connections .................................. 7
3G.
Main Power .................................................. 7
3H.
Temperature Control .................................... 7
SECTION 4.
Start Up
4A.
Filling the System ....................................... 10
4B.
Operation Checklist .................................... 10
SECTION 5.
Maintenance
5A.
Owner Care and Maintenance ................... 11
5B.
Routine De-Liming Procedure .................... 11
5C.
Therostat Replacement .............................. 11
5D.
Vent and Condensate Drain Inspection
(performed annually) .................................. 11
5E.
Cleaning Combustion Chamber Coil
and/or Burner ............................................. 12
5F.
Combined Water (potable) Heating and
Space Heating ............................................ 12
SECTION 6.
Quick Reference Trouble Shooter
6A.
Short Cycling .............................................. 13
6B.
9600 Overheats Quickly or
Knocks During Operation ........................... 13
6C.
Delayed Ignition .......................................... 13
6D.
Occasional Lockouts .................................. 13
S9301A Control Module ............................. 14
SECTION 7.
Replacement Parts List
................................................................... 17