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