Nordyne CMF 100-PG User Manual

Owners Manual/Installation Instructions
CMF80-PG Convertible (65, 75, and 90 KBTU/H Inputs),
CMF 100-PG (90 KBTU/H Input)
CMF80-PO Convertible (65, 75, and 90 KBTU/H Inputs),
CMF 100-PO (90 KBTU/H Input)
Counterflow Gas or Oil Heating Appliance
Read all instructions carefully before beginning the installation. Read all labels and tags
on the furnace carefully and follow all precautions outlined on those labels and tags.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
!
WARNING:
Improper installation, alteration, ser-
vice or maintenance can cause injury
or property damage. Refer to this
manual for assistance or consult a
qualified installer, service agency, or
the gas supplier for additional infor-
mation.
FOR YOUR SAFETY
WHAT TO DO IF YOU
SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call
the fire department.
Rated CMF-PG CMF-PO CMF-PG CMF-PO
BTUH 80 CONV. 80 CONV. 100 100
Input 75,000 75,000 90,000 90,000
Output 56,000 60,000 68,000 72,000
GENERAL
CMF furnaces are high quality, direct vent
furnaces used for manufactured housing, rec-
reational vehicle, and residential
†
applications.
These furnaces are offered in either power gas
(designated by PG) or power oil (designated by
PO) models. The power gas models are de-
signed for operation with either natural or pro-
pane (LP) gas.
The CMF series is convertible from power oil to
power gas, and vice versa. Furthermore, the
firing rate of the CMF80 Convertible Series can
be changed using a certified NORDYNE
conversion kit field-installed by a qualified service
technician. Refer to the “Firing Rate Conversion”
section later in these instructions for more
information on the firing rate change.
These furnaces are certified to the UL307
standards (UL 307A for oil models; UL 307B for
gas models), and can be installed in a variety of
applications, as shown in Table 1. This furnace
is not to be used for temporary heating of
buildings or structures under construction.
!
WARNING:
This furnace must be installed by a quali-
fied installing agency and in accordance
with applicable local codes and ordi-
nances that govern this type of equip-
ment. Failure to properly install the fur-
nace, base assembly, and venting sys-
tem as described herein may damage the
equipment and/or the home, can create a
fire or asphyxiation hazard, violates U.S.
listing requirements, and will void the
warranty. This furnace is NOT approved
for installation with split system air con-
ditioning. Use a NORDYNE packaged air
conditioning system.

Nordyne CMF 100-PG Specifications

General

Brand	Nordyne
Model	CMF 100-PG
Category	Heating System
Language	English

Summary

Furnace Safety and Handling

Gas Leak Safety Procedures

Immediate actions to take if a gas leak is detected.

Flammable Liquids Warning

Precautions against storing flammable vapors near appliances.

Furnace Model Overview

CMF Series Introduction

Overview of CMF convertible gas and oil furnaces.

Installation Risk Awareness

Consequences of improper installation or alteration.

Installation Requirements and Compliance

Equipment Inspection and Claims

Procedures for checking and reporting shipping damage.

Code and Standard Adherence

Installer obligations for local codes and national standards.

Venting Requirements for Housing Types

Manufactured Housing Venting

Specific venting requirements for manufactured homes.

Residential Venting Guidelines

Rules for venting residential installations, including chimney use.

Venting System Operational Checks

Pre-Operation Venting System Verification

Steps to ensure proper venting before appliance startup.

Unit Installation: Location and Clearances

Minimum Clearances to Materials

Table detailing required clearances around the furnace.

MA-200 Base Installation Procedure

Base Pan Duct Opening Preparation

Steps for cutting openings in the base pan for ducts.

MA-100 Base Installation Procedure

Floor and Duct Opening Modifications

Instructions for cutting openings in flooring and distribution ducts.

Combustion Air and Damper Installation Details

Combustion Air Ducting and Adapter

Connecting combustion air duct and installing the adapter.

Specialized Base and Closet Installation Requirements

Closet Return Air System Specifications

Minimum requirements for return air openings in closets.

Closet Installation and Roof Jack Selection

Closet Door Air Opening Requirements

Specifics on louvered doors and free area for closet installations.

SRJ Roof Jack Model Selection

Chart for choosing the correct SRJ roof jack model.

Roof Jack and Vent Pipe Assembly

Roof Jack Installation and Sealing

Steps for mounting and sealing the roof jack assembly.

Installation Diagrams and Chimney Venting

Chimney Venting Requirements

Guidelines for installing the furnace through an existing chimney.

Fuel Piping Requirements

PG Series Gas Piping Standards

Rules for sizing and installing gas supply piping.

Fuel Line Hook-Up Procedures

Oil Line Air Leak Prevention

Methods to ensure airtight oil supply lines and prevent leaks.

Furnace Wiring Diagrams

CMF Series Furnace Electrical Schematic

Diagram illustrating the furnace's wiring connections.

Electrical Connections and Fan/Limit Settings

Line Voltage Power Supply Connection

Step-by-step guide for connecting the main power.

Fan and Limit Control Functionality

Explanation of the FAN ON, FAN OFF, and LIMIT OFF levers.

Thermostat and Blower Control Settings

Thermostat Location and Wiring

Recommendations for thermostat placement and connections.

Gas Burner Operation and Safety

PG Direct Ignition Gas Burner Operation

Detailed instructions for safely operating gas burners.

Gas Furnace Input Check and Operation

Gas Furnace Startup Sequence

Step-by-step process for initiating furnace operation.

Verifying and Adjusting Gas Input Rate

Procedures for checking and setting the correct gas input.

Gas Burner Configuration and LP Conversion

Converting Natural Gas to LP Gas

Guide for converting the burner from natural gas to LP gas.

Burner Adjustment and Oil Components

Adjusting the Gas Burner Air Shutter

Setting the air shutter for optimal combustion and CO levels.

Oil Burner Operation and Firing Rate Adjustment

Oil Burner Start-Up and Air Bleeding

Procedures for priming the oil pump and starting the burner.

Firing Rate Conversion Kits

Information on adjusting the furnace's firing rate with conversion kits.

Furnace Operating Sequences and Heat Distribution

Gas Furnace Operating Sequence Details

Comprehensive steps for gas furnace operation.

Oil Furnace R7184 Control Sequence

Operational steps for oil furnaces using Honeywell R7184 control.

Troubleshooting: Burner Motor Issues

Burner Motor Not Running

Diagnosing why the burner motor fails to start.

Motor Runs, No Flame

Troubleshooting steps when the motor operates but no flame is produced.

Troubleshooting Ignition and Gas Flow

Ignition Control and Gas Valve Problems

Diagnosing issues with ignition failure and gas valve operation.

Low Heat Output and High Gas Bills

Addressing insufficient heating and excessive gas consumption.

Control Module Status and Oil Primary Control Troubleshooting

Gas Furnace Control Module Lockout Codes

Interpreting flash codes for gas furnace safety lockouts.

R7184 Control Lockout and Reset

Procedures for resetting and understanding oil furnace lockout conditions.

Oil Control Error Codes and Cad Cell Testing

R7184 Oil Control Indicator Light Errors

Troubleshooting oil furnace issues based on indicator light flashes.

Cad Cell Resistance Measurement

Testing cad cell resistance for proper flame sensing.