Nordyne CMF 100-PO 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-PO Specifications

General

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

Summary

General Information and Safety

Essential Safety Precautions

Provides critical safety warnings, including procedures for gas leaks and general handling.

Furnace Model Specifications

Details input and output ratings for different CMF furnace models.

Installation Requirements Overview

Equipment Inspection and Code Compliance

Covers initial equipment checks and adherence to installation codes and regulations.

Combustion Air and Ventilation Needs

Ensures adequate air supply for safe and efficient furnace operation.

Venting System Guidelines

Venting for Manufactured Housing

Specific venting requirements applicable to manufactured home installations.

Residential Installation Venting

Venting requirements and procedures for residential applications.

Unit Installation Clearances

Clearances to Adjacent Materials

Specifies minimum required spacing from surrounding materials for safe installation.

Combustion Air and Venting Installation Details

Damper Installation Procedures

Instructions for installing automatic shut-off dampers in the venting system.

Closet Installation Guidelines

Return Air System Requirements for Closets

Specifies conditions for closet return air openings and system design.

Roof Jack Selection and Assembly

Roof Jack Accessories Chart

A guide to selecting appropriate roof jack models and accessories for installation.

Vent Pipe and Roof Jack Connection

Securing the Vent Pipe to the Roof Jack

Step-by-step instructions for connecting the vent pipe to the roof jack assembly.

Fuel Line Connections

Gas Piping Installation Requirements

Critical procedures and requirements for installing gas supply lines.

Oil Piping Installation Guidelines

Recommended procedures for installing oil supply lines and tank connections.

Fuel Tank Hook-Up Procedures

One Line Fuel System Hook-Up

Instructions for connecting the single-line oil supply system.

Two Line Fuel System Hook-Up

Instructions for connecting the two-line oil supply system.

Wiring Diagrams and Electrical Layouts

CMF Series Furnace Wiring Diagram

Illustrates the electrical connections for the main furnace unit.

Power Gas Burner Wiring Diagram

Shows the electrical connections specific to the PGB power gas burner.

Electrical Wiring Procedures

Line Voltage Requirements

Ensuring correct voltage, frequency, and phase for power supply.

Line Voltage Connection Steps

A step-by-step guide for connecting the main power supply to the appliance.

Thermostat and Fan/Limit Controls

Room Thermostat Installation Guidelines

Recommendations for thermostat location, wiring, and anticipator adjustment.

Fan and Limit Control Settings

Instructions for adjusting blower operation and safety limit settings.

Gas Burner Operating Instructions

PG Direct Ignition Burner Start-Up

Detailed procedures for safely starting and operating PG direct ignition gas burners.

Furnace Input and Orifice Verification

Natural and LP Gas Orifice Selection Table

Table to determine the correct gas orifice size based on firing rate and gas type.

Gas Burner Adjustments and Conversion

Gas Burner Controls and Air Shutter Settings

Adjusting gas valve controls and air shutters for optimal burner performance.

Natural to LP Gas Conversion Procedure

Step-by-step guide to convert the furnace from natural gas to LP gas.

Oil Burner Operating Procedures

Oil Burner Start-Up and Air Bleeding

Instructions for initial oil burner start-up and removing air from the fuel line.

Firing Rate Conversion for Oil Models

Procedures for adjusting the firing rate of the CMF oil furnaces.

Furnace Operating Sequences

Gas Furnace Heating Cycle Operation

Step-by-step description of the heating cycle for gas furnaces.

Oil Furnace Heating Cycle Operation

Step-by-step description of the heating cycle for oil furnaces.

Gas Burner Troubleshooting Guide

Burner Motor and Ignition System Issues

Diagnosing problems related to the burner motor and ignition system.

Control Module Status Indicators

Gas Furnace Error Code Interpretations

Explains status light indications for gas furnace lock-outs and faults.

Oil Furnace Error Code Interpretations

Explains status light indications for oil furnace lock-outs and faults.

Honeywell R7184 Control Troubleshooting

Diagnosing Burner Start-Up Failures

Troubleshooting steps for issues preventing the burner from starting.

Cad Cell Resistance Testing Procedures

Methods for checking the cad cell resistance for proper flame sensing.