Thermo-pride OMD-70 User Manual

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GAS-FIRED OR OIL-FIRED FURNACE
DOWN FLOW & DIRECT VENT (SEALED COMBUSTION)
MODEL: OMD-70
INSTALLATION AND SERVICE MANUAL
For installation in:
1. Manufactured Homes
2. Modular Homes/Buildings
3. Site Construction—Residential (Single Story Dwellings)
:
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.
: If the information in these instructions is not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property
damage. Refer to this manual. For assistance or additional information consult a qualified installer, service
agency, or fuel supplier.
: Do not use this appliance if any part has been underwater. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the electrical or control system that has been
underwater.
PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH THE USER
AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL.
THERMO PRODUCTS, LLC.
POST OFFICE BOX 217
NORTH JUDSON, IN 46366
PHONE: (574) 896-2133
MO-467
ECN 5135-MA 100615
MADE IN USA
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Summary of Contents

Page 1 - MODEL: OMD-70

GAS-FIRED OR OIL-FIRED FURNACE DOWN FLOW & DIRECT VENT (SEALED COMBUSTION) MODEL: OMD-70 INSTALLATION AND SERVICE MANUAL For installation in:

Page 2

All installations and services must be performed by qualified service personnel. III. FURNACE SPECIFICATIONS MODEL OMD-70 GMD-85 HEAT INPUT R

Page 3

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

Page 4

All installations and services must be performed by qualified service personnel. IV. INSTALLATION A. ROOF JACK The roof jack assembly and accessor

Page 5

All installations and services must be performed by qualified service personnel. 4. This furnace is U.L. listed for closet, alcove or freestanding a

Page 6

All installations and services must be performed by qualified service personnel. 1. Combustible Floor Base Model: 70-BASE Use the base bottom panel

Page 7

All installations and services must be performed by qualified service personnel. If the combustion air passageway cannot terminate outside of the skir

Page 8

All installations and services must be performed by qualified service personnel. IMPORTANT: Adequate combustion air must be provided under all circums

Page 9

All installations and services must be performed by qualified service personnel. E. ALCOVE INSTALLATION In this application, a minimum of 18 inches

Page 10

All installations and services must be performed by qualified service personnel. 2. The return air opening may be located in the top, the center or

Page 11

All installations and services must be performed by qualified service personnel. The preferred location of the outside combustion air intake terminati

Page 12

All installations and services must be performed by qualified service personnel. I. SAFETY SECTION This page and the following two pages contain var

Page 13

All installations and services must be performed by qualified service personnel. Figure 6. 19

Page 14

All installations and services must be performed by qualified service personnel. H. FUEL PIPING Sizing and installation of fuel lines must be in acc

Page 15

All installations and services must be performed by qualified service personnel. : The furnace and its gas valve must be disconnected from the gas sup

Page 16

All installations and services must be performed by qualified service personnel. If possible, install the tubing under the floor. Specific information

Page 17

All installations and services must be performed by qualified service personnel. Figure 7. J. ELECTRICAL WIRING All electrical wiring must be inst

Page 18

All installations and services must be performed by qualified service personnel. : When testing electrical equipment, always follow standard electrica

Page 19

All installations and services must be performed by qualified service personnel. Once the furnace is installed, check the thermostat heat anticipato

Page 20 - Figure 6

All installations and services must be performed by qualified service personnel. “C” 24 VAC common from transformer “CC” Compressor Contactor

Page 21

All installations and services must be performed by qualified service personnel. The control provides a 120 VAC output for an electronic air cleaner

Page 22

All installations and services must be performed by qualified service personnel. DIP SWITCH 2 SECTION STATE BLOWER DELAY TIMES 1 2 3 4 ON - SEC O

Page 23

All installations and services must be performed by qualified service personnel. : If you do not follow these instructions exactly, a fire or explosio

Page 24

All installations and services must be performed by qualified service personnel. 5. WIRING DIAGRAM 29

Page 25

All installations and services must be performed by qualified service personnel. K. BURNER INSTALLATION The burner mounts to the furnace on three mou

Page 26

All installations and services must be performed by qualified service personnel. 8. The furnace is now ready for burner adjustment, refer to the foll

Page 27

All installations and services must be performed by qualified service personnel. replacement parts for location identification). After the furnace is

Page 28

All installations and services must be performed by qualified service personnel. range is between 70°F to 100°F. A lower temperature rise usually resu

Page 29

All installations and services must be performed by qualified service personnel. V. DEALER MAINTENANCE THIS SECTION IS ONLY TO BE PERFORMED BY TRA

Page 30 - 5. WIRING DIAGRAM

All installations and services must be performed by qualified service personnel. YesSet thermostat subbase to "HEAT"Does thermostat make con

Page 31

All installations and services must be performed by qualified service personnel. 36 Is there combustionairflow to the furnace?YesYesYesYesIs there 12

Page 32 - 2) or oxygen (O2) analyzer

All installations and services must be performed by qualified service personnel. 37 While ignition electrodesare sparking does fuel valve open?NoYesY

Page 33 - 2, O2 and CO readings

All installations and services must be performed by qualified service personnel. 38 After fuel valve opens,does the burner ignite?Check the fuel supp

Page 34

All installations and services must be performed by qualified service personnel. : If you suspect there is a problem with the furnace, the venting sys

Page 35

All installations and services must be performed by qualified service personnel. 39 Does the circulating airblower turn off afterthermostat is satisf

Page 36

All installations and services must be performed by qualified service personnel. B. CAD CELL CHECKOUT PROCEDURE: (OMD ONLY) 1. Remove cad cell lea

Page 37

All installations and services must be performed by qualified service personnel. 4. With access to the inside of the heat exchanger through the burne

Page 38

All installations and services must be performed by qualified service personnel. Flue pipes should be inspected during the annual maintenance check-u

Page 39

All installations and services must be performed by qualified service personnel. VI. USER INFORMATION SECTION A. WARNINGS AND CAUTIONS: : If

Page 40

All installations and services must be performed by qualified service personnel. B. COMPONENT LOCATIONS The following diagram shows a typical furnace

Page 41

All installations and services must be performed by qualified service personnel. 2. EXTERIOR OF FURNACES: The furnace exterior should be inspected fo

Page 42 - Figure 8

All installations and services must be performed by qualified service personnel. APPENDIX A. REPLACEMENT PARTS LIST 46

Page 43

All installations and services must be performed by qualified service personnel. 47

Page 45

All installations and services must be performed by qualified service personnel. This page and the following page contain reproductions of the various

Page 46

All installations and services must be performed by qualified service personnel. 5 POWERSWITCH

Page 47

All installations and services must be performed by qualified service personnel. TABLE OF CONTENTS SECTION BEGINNING PAGE I. SAFETY SECTION

Page 48

All installations and services must be performed by qualified service personnel. II. GENERAL INSTRUCTIONS AND CLEARANCES NOTE: READ THIS SECTION BEF

Page 49

All installations and services must be performed by qualified service personnel. b. Non-combustible material: “...material that is not capable of bein

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