INLET HOOD INSTALLATION WITH LAP OR UNEVEN SIDING............................................................................................. 29 CONNECTING THE AIR INLET DUCT AT THE GARN® UNIT ................................................................................................. 30 ADDITIONAL AIR INLET FOR MAKEUP AIR IN A RELATIVELY “AIR TIGHT” BUILDING (INCLUDES MULTIPLE UNIT INSTALLATION) .................................................................................................................................................................. 31 AIR INTAKE DAMPER.............................................................................................................................................................. 32 INSTALLING THE AIR INTAKE DAMPER .............................................................................................................................. 32 INSULATING THE AIR INTAKE DAMPER ............................................................................................................................. 32 WIRING THE AIR INTAKE DAMPER .................................................................................................................................... 35 ELECTRIC HEATING PACKAGE INSTALLATION ........................................................................................................................ 36 SPARK ARRESTOR .................................................................................................................................................................. 36 INSTALLATION .................................................................................................................................................................. 37 INSPECTION AND CLEANING ............................................................................................................................................ 38 EXHAUST FLUE INSTALLATION ............................................................................................................................................... 39 GENERAL NOTES (READ THIS FIRST).................................................................................................................................. 39 WHERE TO BUY FLUE ........................................................................................................................................................ 41 CONNECTING THE FLUE TO THE UNIT............................................................................................................................... 42 FLUE GAS DISCHARGE CLEARANCES ................................................................................................................................. 45 HORIZONTAL SIDEWALL FLUE ........................................................................................................................................... 46 EXTERNAL VERTICAL FLUE USING AN EXTERIOR TEE ........................................................................................................ 47 INTERNAL VERTICAL FLUE ................................................................................................................................................. 48 VERTICAL FLUE - HEIGHT ABOVE NEARBY BUILDING COMPONENTS ............................................................................... 48 CONNECTION TO A MASONRY CHIMNEY .......................................................................................................................... 48 MAXIMUM FLUE LENGTH (HORIZONTAL RUN AND VERTICAL HEIGHT) ........................................................................... 50 INSULATING YOUR GARN® .................................................................................................................................................... 52 AMOUNT OF INSULATION................................................................................................................................................. 52 ENCLOSURE CONSTRUCTION METHOD............................................................................................................................. 53 GARN® WHS/ETS DIGITAL CONTROLLER................................................................................................................................ 54 IDENTIFYING YOUR BOARD REVISION............................................................................................................................... 55 IDENTIFYING YOUR CHIP REVISION................................................................................................................................... 55 INSTALLING THE GARN® WHS/ETS DIGITAL CONTROLLER................................................................................................ 56 REV A WIRING PICTURES .................................................................................................................................................. 58 REV C AND REV D WIRING PICTURES ............................................................................................................................... 60 EXTENDING THE SENSOR WIRES ....................................................................................................................................... 61 DO NOT MODIFY THE DIGITAL CONTROLLER OR ADD ADDITIONAL COMBUSTION CONTROLS .......................................61 LOW WATER CUT-OFF AND TANK TEMPERATURE SENSOR STEM .................................................................................... 62 PIPING YOUR GARN® ............................................................................................................................................................. 65 WARNINGS WHEN CONNECTING TO AN EXISTING SYSTEM OR GLYCOL TREATED SYSTEM .............................................65 E. FILLING AND WATER TREATMENT .............................................................................................................................66 STEP 1 – FILL WATER SAMPLE TEST ....................................................................................................................................... 66 STEP 2 - CLEANING ................................................................................................................................................................ 67 STEP 3 - TREATMENT ............................................................................................................................................................ 68 STEP 4 – INITIAL FOLLOW-UP ................................................................................................................................................ 69 STEP 5 – LONG TERM FOLLOW-UP ........................................................................................................................................ 69 EXAMPLE WATER TESTING SCHEDULE................................................................................................................................... 70 CORROSION – WHO’S RESPONSIBLE? .................................................................................................................................... 71 NOTES ON PREVENTING CORROSION, COMMON TYPES OF CORROSION, AND WATER QUALITY ......................................... 72 PROPER CONNECTIONS AND GROUNDING....................................................................................................................... 72 WATER POLLUTION FROM RURAL WELLS ......................................................................................................................... 72 POLYPHOSPHATES AND GARN ® FILL WATER .................................................................................................................... 72 COMMON TYPES OF BOILER CORROSION ........................................................................................................................ 73 MAINTENANCE PROCEDURES TO MINIMIZE CORROSION POTENTIAL .................................................................................. 74
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GARN® WHS 1000 and WHS 2000 Manual | © HY-C® Company LLC | October 2024
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