Contents
Installation Instructions
Required Notice for Massachusetts Installations
Furnace Reliability Hazard
CUT Hazard
FIRE, EXPLOSION, and Asphyxiation Hazard
Frozen Water Pipe Hazard
Winter Shutdown
Water Damage to Property Hazard
Carbon Monoxide Poisoning Hazard
Installation Positions
Installation Requirements
Location and Clearances
Leveling
Furnace Installation Considerations
Horizontal Furnace Installation
Condensate Trap and Drain Lines
Dimensions and Clearances
Air Openings and Connecting Ducts
Knock Outs
Outdoor Combustion Air Method
Requirements
Confined Space Installation
Indoor Combustion Air Unconfined Space
Ventilation Air
Venting and Combustion Air Check
Make the Following Check
For Two Pipe Installation Direct Vent
Dual Certified Direct or Non- Direct Vent
Contaminated Combustion Air
Sizing Combustion Air and Vent Pipe
Combustion Air and Vent Piping Insulation Guidelines
Single Piping only
Vent Termination Clearances
Direct Vent Termination Clearance
Other than Direct Vent Termination Clearance
Frozen and Burst Water Pipe Hazard
Condensate Drain Trap
Only
Upflow Installations Top Vent See Fig
Side View
Upflow Installations Vent through Left-Side See Fig
PVC
All Models Vent through Right-Side See Fig
Exhaust
Downflow Left-Side Vent and Trap See Fig
Downflow Right-Side Vent and Trap
Downflow Right-Side Vent and Trap See Fig
Exhaust
Horizontal Left through Top See Fig
Inlet
Horizontal Left-Side Vent See Fig
Horizontal Right through Top
Horizontal Right through Top See Fig
Exhaust
Horizontal Right-Side Vent See Fig
Connecting Vent and Combustion Air Piping
Combustion Air Pipe Connection Direct Vent
Vent Pipe Connection
Connecting Vent Pipes and Termination
Joining Pipe and Fittings
Horizontal Termination
Multi Vent Termination Clearances
Using Exterior Risers
Vertical Termination
Vent Termination Shielding
Concentric Vent and Combustion-Air
Concentric Vent Termination
Vertical & Horizontal Termination
Carbon Monoxide POISONING, Fire and Explosion Hazard
40,000, 50,000, 60,000, & 75,000 Btuh Furnaces
Fire Hazard
Gas Piping Requirements
Gas Supply Requirements
Fire and Explosion Hazard
Typical Gas Piping for Upflow
Electrical Operation Hazard
Additional Propane Connection Requirements
High Altitude Air Pressure Switch
Propane Conversion
General Derating Rules
Electrical SHOCK, Fire or Explosion Hazard
Changing Orifices for High Altitude
Thermostat Heating
Power Supply Wiring
Final Gas Piping Check
Junction Box J- Box Relocation
Tap Select Interface Board
Cooling
Optional Equipment
Furnace Control Fuse
Insulation
Installation
Connections
Sizing
Filter Installation using Filter Rack
Filters
Addition Of Air Conditioning
Subbase for Combustible Floor
Combustible Floor Installation
Manifold Gas Pressure Adjustments
Startup
Gas Supply Pressure
Temperature Rise Check
Natural Gas Input Rating Check
Main Burner Flame Check
Changing Blower Speed
Blower Adjustments
Continuous- Fan using G
Hard Wired Continuous Fan Operation
On = OFF =
Low Cooling Y1 Request
High Cooling Y1 & Y/Y2 or Y/Y2 Request
Continuous Circulating Fan G Request
Heating Request with Gas Shut Off
Furnace Control Board Diagnostic Codes See Fig
Wiring Diagram
Thermostat Wiring Guide
No Connection SINGLE-STAGE Thermostat
TWO-STAGE
Catalog No 58HDV---01SI