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General| Model | ML196UHE Series |
|---|---|
| Efficiency Rating | Up to 96% AFUE |
| Blower Type | Variable Speed |
| Fuel Type | Natural Gas |
| Warranty | Limited Lifetime Heat Exchanger Warranty |
| Heating Capacity (BTU/h) | 60, 000 - 100, 000 |
Electrical shock and improper installation warnings.
Caution regarding sharp metal edges and protective gear.
Details AFUE, input/output Btuh, and temperature rise.
Indicates Energy Star certification status.
Covers pipe sizes, blower specs, and electrical data.
Provides shipping weight information.
Lists optional cabinet and condensate drain accessories.
Details optional control and filter kit options.
Lists optional night service and termination kits.
Lists optional venting accessories.
Blower data for model 030XE36B.
Blower data for model 045XE36B.
Blower data for model 070XE36B.
Blower data for model 070XE48B.
Blower data for model 090XE36C.
Blower data for model 090XE48C.
Blower data for model 090XE60C.
Blower data for model 110XE60C.
Blower data for model 135XE60D.
Diagram showing the location of major furnace components.
Procedures for handling components to prevent ESD damage.
Details on transformer, door switch, circuit breaker, and ignition control.
Description of specific control box components.
Description of the integrated ignition control system.
Lists and describes terminal connections for ignition control.
Table of diagnostic codes for ignition control 103217-03.
Explains the sequence of electronic ignition.
Details heating and cooling fan on/off delay settings.
Lists diagnostic codes and statuses for ignition control 107163-01.
Description and troubleshooting of flame rollout switches.
Description of the heat exchanger assembly.
Details on the gas valve and its operation.
Procedure for measuring flame signal and troubleshooting.
Procedure for testing the ignitor's resistance and voltage.
Steps to measure flame signal using a digital meter.
Checks ignitor circuit resistance via 4-pin plug.
Checks ignitor resistance at the 2-pin jack-plug.
Checks ignitor voltage during warm-up period.
Table listing orifice sizes for various models.
Description and function of the pressure switch.
Steps for measuring pressure differential using a manometer.
Table of common pressure switch issues and corrective actions.
Notes on blower balancing and input voltage requirements.
Troubleshooting steps for the blower motor.
Description of secondary limit controls.
Tests for motor module resistance and blower spin.
Procedure for installing a replacement motor control module.
Details approved piping and fitting materials and standards.
Lists primer and solvent cement specifications.
Lists approved venting systems for Canada.
Critical warning about flammable fumes from PVC glue.
Step-by-step guide for cementing pipe joints.
Guidelines for pipe support and wall thickness.
Instructions for replacing a furnace in a common vent system.
Guidance for routing and terminating exhaust piping.
Information on DuraVent and Centrotherm venting systems.
Guidelines for intake and exhaust pipe sizing.
Step-by-step process for determining correct pipe size.
Diagrams for horizontal direct/non-direct vent pipe connections.
Instructions for direct vent intake pipe routing.
Instructions for non-direct vent intake pipe routing.
Installation details for equipment in a confined attic space.
Installation details for equipment in a confined crawlspace.
Guidelines for vent termination placement and clearances.
Important notes regarding termination practices.
Clearance requirements for US non-direct vent installations.
Clearance requirements for Canadian non-direct vent installations.
Clearance requirements for US direct vent installations.
Clearance requirements for Canadian direct vent installations.
Guidelines for intake/exhaust pipe placement and separation.
Details for roof and side wall vent terminations.
Requirements for supporting side wall vent piping.
Guidance for installing multiple furnace terminations.
Details for straight and extended wall terminations.
Details on alternative terminations using TEEs/elbows.
Requirements for non-direct vent exhaust piping terminations.
Instructions for venting in crawl space applications.
Shows locations for condensate trap and plugs.
Diagrams for remote condensate trap locations.
Guidance on routing condensate lines and venting.
Diagram of trap with optional overflow switch.
Configuration for furnace with separate drain.
Configuration for furnace with common drain.
Drain configuration for horizontal discharge, separate drain.
Drain configuration for horizontal discharge, common drain.
Important note about venting combined drains.
Diagram for trap and drain assembly using 1/2" PVC.
Diagram for trap and drain assembly using 3/4" PVC.
Initial checks before starting the furnace.
Steps for initiating heating operation.
Critical safety instruction regarding gas leak detection.
Procedure for placing the furnace into operation.
Procedure for priming the condensate trap.
Steps for operating the gas valve.
Procedure for turning off gas supply to the unit.
Troubleshooting steps for furnace non-operation.
Information on CSA design certification.
Guidelines for gas piping installation.
Warning and recommended methods for gas leak detection.
Procedure for testing gas supply pressure.
Procedure for measuring manifold pressure.
Procedure for checking combustion CO2 levels.
Notes on installation at high altitudes and requirements.
Warning regarding electrical shock hazard and grounding.
Procedure for checking voltage at the integrated control.
General procedure for blower operation and thermostat settings.
Explanation of temperature rise factors for ML196UH units.
Procedure for measuring external static pressure.
Information on changing blower speed tap settings.
General safety warnings for performing maintenance.
Instructions for checking and cleaning the blower wheel.
Instructions for inspecting, cleaning, or replacing filters.
Warnings regarding wiring size and circuit breakers.
Procedure for checking and cleaning condensate hose screens.
Detailed steps for cleaning the heat exchanger assembly.
Caution regarding corrosive nature of some leak detection soaps.
Wiring diagram for heating units.
Flowchart detailing normal and abnormal heating sequences.
Troubleshooting steps related to ignition and flame sensing.
Troubleshooting steps for limit and pressure switches.
Flowchart detailing normal and abnormal cooling sequences.
Sequence of operation for continuous fan and accessories.
