White Outdoor FUEL HD120 THERMOSTAT

THERMOSTAT

GROUND

BROWN RED

RED

YELLOW

YELLOW WHITE

BLACK

WHITE

BLACK

GREEN

8910

HI LO

YELLOW

BLUE

RED

NIPPLE

HOSE ADAPTER

TEE

NIPPLE

CAP

TO GAS CONTROL

Contents

Main MODELS OUTPUT (Btuh) FUEL HD120 120,000 Congratulations! Owner's Manual and Instructions GreenGro PlusGreenhouse Heaters ATTENTION ALL USERS Page Page Table of Contents General Information SPECIFICATIONS HD120 MMooddeell Heater Specifications Safety Precautions FUEL GAS ODOR ODOR FADING -- NO ODOR DETECTED ATTENTION -- CRITICAL POINTS TO REMEMBER! Page Installation Instructions GENERAL FIG. 1 AIR DIVERTER INSTALLATION INSTRUCTIONS INDOOR INSTALLATION INSTRUCTIONS FIG. 3 FIG. 2 THERMOSTAT Page MANUAL SHUT-OFF VALVE, HOSE AND REGULATOR ASSEMBLY FIG. 5 FIG. 6 FIG. 7 ATTENTION Shut-Down Instructions Start-Up Instructions Cleaning Instructions Maintenance Instructions FIG. 8 MOTOR AND FAN WHEEL ASSEMBLY Service Instructions BBuurrnn HHaazzaarrdd GENERAL FFiirree aanndd EExxpplloossiioonn HHaazzaarrdd IGNITER AND FLAME SENSOR FLAPPER ADJUSTMENT FIG. 10 TESTING THE MANUAL RESET HIGH LIMIT SWITCH FIG. 13 ATTENTION FIG. 14 MATERIALS REQUIRED Gas Pressure Checks Troubleshooting Instructions READ THIS ENTIRE SECTION BEFORE BEGINNING TO TROUBLESHOOT PROBLEMS. 20 Yes Yes HEATING MODE Problem Yes Yes 21 Problem Page Page VENTILATION MODE Electrical Connection and Ladder Diagram DSI CONTROL TRANSFORMER SELECTOR SWITCH ELECTRICAL LADDER DIAGRAM Heater Component Function Page Parts Identification PARTS LIST Warranty Policy Replacement Parts and Service HEATER PARTS