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58MVP Variable-Capacity Multipoise Condensing Gas Furnace Installation, Start-Up, and Operating Instructions For Sizes 040–100 Series 111 CANADIAN GAS ASSOCIATION ® ama A PP R O VED R A93040 NOTE: Read the entire instruction manual before starting the installation. Index Page SAFETY CONSIDERATIONS .3 Dimensional Drawing .2 Clearances to Combustibles 4 INTRODUCTION 3 APPLICATIONS 3-11 General 3 Upflow Applications 3-6 Downflow Applications .6-8 Horizontal Left (Supply-Air Discharge) Applications .8-9 Horizontal Right (Supply-Air Discharge) Applications .10-11 LOCATION 11-12 General 11 Low-Fire Only Installation 11-12 Furnace Location Relative to Cooling Equipment 12 Hazardous Locations .12 INSTALLATION 12-17 Leveling Legs (If Desired) 12-13 Installation On a Concrete Slab .13 Installation On a Combustible Floor (Downflow Applications) 13 Installation In Horizontal Applications .13-15 Filter Arrangement 15 Bottom Closure Panel .15 Gas Piping 16-17 ELECTRICAL CONNECTIONS .17-20 115-v Wiring 17-19 24-v Wiring .19 Accessories 19-20 DIRECT VENTING .20-26 Removal of Existing Furnaces from Common Vent Systems .20 Combustion-Air and Vent Piping .20-23 Concentric Vent and Combustion-Air Termination Kit Installation 23-25 Multiventing and Vent Terminations 25-26 CONDENSATE DRAIN 26-29 Fig.
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1–Multipoise Orientations A93041 General 26 Application 28 Condensate Drain Protection .28-29 SEQUENCE OF OPERATION 29-32 Self-Test Mode 29 Heating Mode 29-30 Heat Mode–Two Stage .30 Emergency Heat Mode .30 Cooling Mode 30-31 Heat Pump Mode 31 Continuous Fan Mode 31 Component Test .31-32 START-UP PROCEDURES 32-37 General 32 Select Setup Switch Positions .32-33 Prime Condensate Trap With Water 33 Purge Gas Lines 33 Adjustments .33-37 Set Gas Input Rate 33-36 Set Temperature Rise 36-37 Set Thermostat Heat Anticipator 37 CHECK SAFETY CONTROLS 37 Check Primary Limit Control .37 Check Pressure Switch .37 CHECKLIST 37 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.