Desa DynaVent DNV25NB User Manual

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DYNAVENT

WINDOW WALL FURNACE
DIRECT-VENT NATURAL GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
SOLID STATE IGNITION
50 60 70 80 90
50 60 70 80 90
DNV25NB
DNV40NB
25,000 and 40,000 BTU/Hr “B” Model Furnaces
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical 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.
WARNING: Improper in-
stallation, adjustment,
alteration, service, or
maintenance can cause
injury or property dam-
age. Refer to this manual
for correct installation
and operational proce-
dures. For assistance or
additional information
consult a qualified in-
staller, service agency,
or the gas supplier.
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury, or loss of life.
— Installation and ser-
vice must be performed
by a qualified installer,
service agency, or the
gas supplier.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
This appliance may be installed in an aftermarket*, permanently located, manufac-
tured (mobile) home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases.

Desa DynaVent DNV25NB Specifications

General

Model	DNV25NB
Heating Capacity	25, 000 BTU
Fuel Type	Natural Gas
Thermostat	Yes
Type	Gas Heater
Ignition Type	Piezo

Summary

Safety Information

General Safety Warnings

Crucial warnings about fire, explosion, and personal injury if instructions are not followed.

Gas Leak Detection and Response

Steps to follow if a gas leak is detected, emphasizing safety and immediate action.

Carbon Monoxide Hazards

Warning about the lethal risk of carbon monoxide poisoning and its symptoms.

Installation and Location Restrictions

Prohibits installation in certain locations and specifies minimum clearances.

Burn and Fire Hazard Warnings

Alerts users to high operating temperatures and fire risks from flammable materials.

Installation and Setup

Local Codes and Standards

Mandates adherence to local codes and national standards for installation.

Unpacking and Inspection

Instructions for safely unpacking the furnace and checking for shipping damage.

Key Product Features

Highlights key components like the hot surface ignitor and thermostat control.

Furnace Placement and Clearances

Specifies optimal locations and required distances from combustible materials.

Wall Opening and Mounting

Details on cutting openings in frame and masonry walls for furnace installation.

Thermostat Installation and Wiring

Step-by-step guide for mounting and wiring the thermostat.

Gas Supply Connection

Procedures for connecting the gas line, including pipe sizing and testing.

Electrical Supply Connection

Guidelines for connecting the furnace to a 120-volt grounded electrical supply.

Attaching Front Cover

Instructions for securely reattaching the furnace's front cover after installation.

Operation and Maintenance

Furnace Operation Safety

Essential safety precautions before and during furnace operation.

Starting and Stopping Procedures

Step-by-step instructions for turning the furnace on and off.

Thermostat Control Operation

How the thermostat regulates room temperature and controls the furnace.

Burner Flame Inspection

Guidance on checking the burner flame pattern for proper operation.

Normal Operating Sequence

Describes the internal sequence of operations during furnace startup and running.

Cleaning and Maintenance

Procedures for cleaning the cabinet, vents, and checking components.

Troubleshooting and Parts

Troubleshooting and Ignition Failures

Addresses problems like no heat, ignition failures, and excessive noise with causes and remedies.

Wiring Diagrams

Electrical schematics for the 25,000 and 40,000 BTU/Hr models.

Replacement Parts Information

Guidance on ordering parts, including warranty and parts central contacts.

Illustrated Parts List: Cabinet Assembly

Detailed breakdown of parts for cabinet assembly (25,000 BTU/Hr).

Illustrated Parts List: Combustion Chamber

Detailed breakdown of parts for the combustion chamber assembly.

Illustrated Parts List: Burner Assembly

Detailed breakdown of parts for the burner assembly.

Illustrated Parts List: Blower Assembly

Detailed breakdown of parts for the blower assembly.

Warranty Information

Limited Warranty Terms

Details the warranty coverage, duration, and exclusions for the furnace.