Installation Instructions
Required Notice for Massachusetts Installations
FIRE, EXPLOSION, and Asphyxiation Hazard
Furnace Reliability Hazard
CUT Hazard
Water Damage to Property Hazard
Frozen Water Pipe Hazard
Winter Shutdown
Location and Clearances
Installation Positions
Installation Requirements
Carbon Monoxide Poisoning Hazard
Condensate Trap and Drain Lines
Furnace Installation Considerations
Horizontal Furnace Installation
Leveling
Dimensions and Clearances
Outdoor Combustion Air Method
Air Openings and Connecting Ducts
Knock Outs
Confined Space Installation
Requirements
Indoor Combustion Air Unconfined Space
Make the Following Check
Ventilation Air
Venting and Combustion Air Check
Contaminated Combustion Air
For Two Pipe Installation Direct Vent
Dual Certified Direct or Non- Direct Vent
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
Vent Pipe Connection
Connecting Vent and Combustion Air Piping
Combustion Air Pipe Connection Direct Vent
Horizontal Termination
Connecting Vent Pipes and Termination
Joining Pipe and Fittings
Vent Termination Shielding
Using Exterior Risers
Vertical Termination
Multi Vent Termination Clearances
Concentric Vent and Combustion-Air
Carbon Monoxide POISONING, Fire and Explosion Hazard
Concentric Vent Termination
Vertical & Horizontal Termination
40,000, 50,000, 60,000, & 75,000 Btuh Furnaces
Fire and Explosion Hazard
Gas Piping Requirements
Gas Supply Requirements
Fire Hazard
Electrical Operation Hazard
Typical Gas Piping for Upflow
General Derating Rules
High Altitude Air Pressure Switch
Propane Conversion
Additional Propane Connection Requirements
Changing Orifices for High Altitude
Electrical SHOCK, Fire or Explosion Hazard
Junction Box J- Box Relocation
Power Supply Wiring
Final Gas Piping Check
Thermostat Heating
Furnace Control Fuse
Cooling
Optional Equipment
Tap Select Interface Board
Sizing
Installation
Connections
Insulation
Addition Of Air Conditioning
Filter Installation using Filter Rack
Filters
Combustible Floor Installation
Subbase for Combustible Floor
Gas Supply Pressure
Manifold Gas Pressure Adjustments
Startup
Main Burner Flame Check
Temperature Rise Check
Natural Gas Input Rating Check
Hard Wired Continuous Fan Operation
Blower Adjustments
Continuous- Fan using G
Changing Blower Speed
On = OFF =
Continuous Circulating Fan G Request
Low Cooling Y1 Request
High Cooling Y1 & Y/Y2 or Y/Y2 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