Thermo Products omd-70 service manual Combustible Floor Base Model: 70-BASE

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1. Combustible Floor Base Model: 70-BASE

All installations and services must be performed by qualified service personnel.

1. Combustible Floor Base Model: 70-BASE

Use the base bottom panel as a template to mark floor opening locations (see Figure 2). Cut a square opening in the floor for the supply air connector duct. Cut the opening 1-inch larger than the square template opening. (duct requires 1-inch clearance to combustible floor). Cut a combustion air duct opening in the floor 1/8-inch larger than the template opening.

Figure 2.

After cutting openings in the floor, place the bottom panel in position. Mark the square opening location on the distribution duct at the connection point of the connector duct. Remove the bottom panel. Cut an opening in the distribution duct slightly larger than the connector duct. (refer to Figure 2 for location of this cut.) Cut the connector duct to length. Install the connector duct. Bend over each tab. Insure an airtight seal by using high temperature sealant or tape on the joint. Reinstall the bottom panel over the connector duct. Insert and secure the combustion air duct. Put the base top assembly in place (see Figure-3).

IMPORTANT: A combustion air duct must be used. If the underside of the mobile home is skirted or enclosed (e.g. enclosed in a crawlspace), the combustion air intake should exit through the skirting, or enclosure, if at all possible. All joints and seams of supply ducts and combustion air ducts must be closed with a sealing method suitable to the application conditions and temperatures ( e.g. high temperature silicone caulk and/or aluminum tape).

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Contents GAS-FIREDOR OIL-FIREDFURNACE MODEL: OMD-70 INSTALLATION AND SERVICE MANUALFOR YOUR SAFETY DOWN FLOW & DIRECT VENT SEALED COMBUSTIONI. SAFETY SECTION If you do not follow these instructions exactly, a fire or explosion may result causing personal injury, loss of life or property damage Do not attempt to start the burner when All installations and services must be performed by qualified service personnel POWER SWITCH BEGINNING PAGE TABLE OF CONTENTSSECTION a. Combustible material b.Non-combustiblematerial MODELS OMD/GMDGMD-85 III. FURNACE SPECIFICATIONSMODEL BURNER DATA BLOWER DATAC.FURNACE LOCATION IV. INSTALLATION A. ROOF JACKB. STANDARD CHIMNEY Cottage Base Model: 01COT-BASE D. BASE INSTALLATIONCombustible Floor Base Model: 70-BASE Figure 1A1. Combustible Floor Base Model: 70-BASE 2. Cottage Base Model: OMCCOT-BASE IMPORTANT: Adequate combustion air must be provided under all circumstances. If the underside of the home is skirted or enclosed e.g. by an enclosed crawlspace, the combustion air intake should exit through the side of cottage base and terminate outside of the structure. All joints and seams of supply ducts and combustion air ducts must be closed with a sealing method suitable to the application conditions and temperatures e.g. using high temperature silicone caulk and/or aluminum tape E. ALCOVE INSTALLATION F. CLOSET INSTALLATIONG. COMBUSTION AIR The preferred location of the outside combustion air intake termination e.g. an optional stainless steel intake hood, part no.370183 is through the side of the structure, skirting or enclosure. An alternate termination location is under the structure in the skirted or crawlspace area providing a minimum of 50 square inches of free area exists around the perimeter for outside combustion air to be drawn through. NOTE: Combustion air cannot be drawn from the occupied space of the home Figure H. FUEL PIPING 2. Oil Tank and Piping OMD-70 All installations and services must be performed by qualified service personnel Figure J. ELECTRICAL WIRING 1.Electrical Branch Supply Circuit 4. BLOWER CONTROLLER INFORMATION FOR PSC MOTOR TERMINAL DEFINITIONS & FIELD WIRINGA. Inputs B. OutputsC. Operating Modes PSC TROUBLE SHOOTING DIAGNOSTIC FEATURES5. WIRING DIAGRAM K. BURNER INSTALLATION L.BURNER OPERATION AND ADJUSTMENT replacement parts for location identification. After the furnace is warmed up to a steady- state condition about 15 minutes, the final burner adjustment should be made using combustion instrumentation for measuring carbon dioxide CO2 or oxygen O2, carbon monoxide CO, smoke for oil furnaces, and stack temperature. In order to achieve the most efficient combustion possible, the following steps must be taken M. FLUE GAS COMBUSTION ANALYSIS BURNER COMBUSTION PARAMETERSV. DEALER MAINTENANCE A. TROUBLESHOOTINGprior to removing doors Note: Check diagnostic code through view portOMD/GMD TROUBLESHOOTING FLOWCHART Are the thermostat wires closed? If 120 VAC is After fuel valve opens, does the burner ignite? Has the high limit thermostat B.CAD CELL CHECKOUT PROCEDURE: OMD ONLY C.HEAT EXCHANGER CLEANING INSTRUCTIONSD. CLEANING OR REPLACING FLUE PIPES E. EXTENDED SHUTDOWN VI. USER INFORMATION SECTION A. WARNINGS AND CAUTIONSB. COMPONENT LOCATIONS Figure C. INSPECTION AREASE. CONTACT INFORMATION D.FILTER LOCATION AND CLEANINGINSTALLATION / SERVICE APPENDIX A. REPLACEMENT PARTS LIST