Clean Blower Motor: (2 per year) At least twice per year (preferably during the heating season) use compressed air and a high velocity nozzle to remove accumulated dust from the windings of the draft inducer motor. Excessive dust accumulation will block airflow around motor windings creating hot spots that may terminate motor operation via a thermal safety switch. Hot spots may start a fire. Hot windings shorten motor life. The motor bearings do not require periodic lubrication. Combustion Air Intake Hood: (frequently) Periodically inspect the combustion air intake hood and screen located at the rear of the GARN® unit on the outside wall of the building in which the GARN® unit is located. Remove all leaves, paper, etc – anything that may reduce or prevent the intake of combustion air to the unit. During winter months periodically remove snow from the area near the hood and ice from the hood screen. A restricted air intake means inefficient, smoky combustion. This allows creosote to condense on the inside surfaces of flue tubes creating a fire hazard. A restricted air intake can also amplify or create “puffing” during combustion. Fuel Loading Door Gasket: (every 5 years) Periodically examine the fuel loading door tadpole gasket for tears, permanent compression set, burn outs, or other degradation. Replace the entire gasket when damage is found. Replacement gaskets are available from your GARN® dealer or the GARN Store. Inner Door Gasket is part # P-0008.
USE ONLY TADPOLE DOOR GASKET THAT IS MANUFACTURED SPECIFICALLY FOR GARN® WHS EQUIPMENT.
If the fuel loading door does not tightly seal against the front face of the air collar, open the door and rotate the inner door assembly counter clockwise one half turn to increase the seal pressure. Shut and latch the door to check. Repeat this process until the seal is snug. Only adjust the door when it is cool. The door will seal tighter when hot due to thermal expansion.
REPLACING THE DOOR GASKET
1) When the insulated disk (inner door) is cool, grasp the inner stainless door assembly and rotate it counterclockwise until the assembly is free of the unit (approximately 3 to 10 full revolutions) 2) Find some way to support the inner door while you disassemble it. A medium sized round trash can or barrel works well. Brace it well or have someone hold it while putting pressure on the screws. 3) Unscrew the sheet metal screws holding the two sides together. Set screws aside for reuse later. 4) Put on a dust mask. 5) Carefully pry the domed sheet metal up. Lift slowly. Disrupt the insulation as little as possible 6) Remove old gasket. 7) Using gloves, make sure the flat surface is free from insulation or any other material. 8) Mark the position of one of the bottom screw holes so it can be seen after the door is re-assembled. 9) Place the circular, tadpole gasket around the flat surface. 10) Set the door skin on the gasket and center.
GARN WHS 1000 and WHS 2000 Manual © HY-C Company LLC - September 2024
98
Made with FlippingBook - professional solution for displaying marketing and sales documents online