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Shipping and Packing List

Package 1 of 1 contains:

1 - Assembled vented fireplace / vented fireplace heater

(includes log set, rock wool)

1 - Envelope containing installation instructions, user’s

manual, warranty, survey card; and with the DT/DTH
models, also a vent restrictor

1 - Eyebrow

Check for shipping damage. The receiving party should con-
tact last carrier immediately if any shipping damage is found.
All venting components are ordered and shipped separately.

Requirements

Lennox Merit

t

Series vented gas fireplaces / vented gas

fireplace heaters are Warnock Hersey certified to ANSI
Z21.88b-1999 in USA (In Canada, CSA-2.33b-M99), and
CAN/CGA-2.17-M91 in both USA and Canada.

Installation of Lennox gas appliances must conform with lo-
cal building codes. In the absence of local codes, units must
be installed according to the current National Fuel Gas
Code (ANSI-Z223.1) in the United States. The National Fuel
Gas Code is available from:

American National Standards Institute, Inc.
11 West 42nd Street
New York, NY 10036

In Canada, installation must conform with current Nation-
al Standard of Canada CAN/CGA-B149.1 “Installation
Code for Natural Gas Burning Appliances and Equip-
ment” and CAN/CGA-B149.2 “Installation Code for Pro-
pane Gas Burning Appliances and Equipment” and other
applicable local codes.

This appliance is Warnock Hersey certified for installation
clearances to combustible material as listed on appliance
rating plate and in table 2. Accessibility and service clear-
ances must take precedence over fire protection clear-
ances.

TABLE 2 - CLEARANCES TO COMBUSTIBLES

BACK

1/2 in. (13 mm); 0 in. (0 mm) spacers

SIDES

1/2 in. (13 mm); 0 in. (0 mm) spacers

TOP SPACERS

0 in. (0 mm)

FLOOR

0 in. (0 mm)

VENT

1 in. (25.4 mm)*

SERVICE CLEARANCES

FRONT

3 FeeT. (0.9 meters)

* 3 in. (75mm) above any horizontal vent component.

NOTE - For installation on combustible floors, appliance shall
not be installed directly on carpeting, tile, or other combus-
tible material other than wood flooring.

Fireplace must be installed so that electrical components
(if applicable) are protected from water.

When 120 volt power is installed, appliance must be elec-
trically grounded in accordance with local codes. In addi-
tion, in the United States, installation must conform with
the current National Electric Code, ANSI/NFPA No. 70.
The National Electric Code (ANSI/NFPA No. 70) is avail-
able from:

National Fire Protection Association
1 Battery March Park
Quincy, MA 02269

In Canada, all electrical wiring and grounding for the unit
must be according to the current regulations of the Cana-
dian Electrical Code Part I (C.S.A. Standard C22.1) and/
or local codes.

Field wiring connection with unit must meet or exceed
specifications of type T wire and withstand a maximum
temperature rise of 180

°

F (82

°

C) .

These units have been Warnock Hersey certified for
installation in bedrooms and mobile homes.

General

These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.

WARNING

Product contains fiberglass wool.

Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool. Breathing this may cause lung
cancer. (Fiberglass wool is known to the State of
California to cause cancer.)

Fiberglass wool may also cause respiratory, skin,
and eye irritation.

To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact
your supervisor.

Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379-9900 USA

1 - This appliance is certified for use with the factory-sup-

plied glass panel only. Do not operate the appliance if
the glass is broken or cracked or if the glass has been
removed. Striking the glass panel may result in glass
breakage. Replacement glass panel must be ordered
from Lennox and should only be installed by a qualified
service technician.

2 - All parts removed for servicing should be replaced be-

fore operating the appliance.

3 - Solid fuel must not be used with this appliance.
4 - Surface temperatures on the appliance are very high.

Make sure that both children and adults are aware of
the danger of burns or clothing ignition.

Summary of Contents for DR3025

Page 1: ...on Clearances 5 Framing 6 Installation 6 Venting 12 Gas Piping 21 Unit Start up 21 Adjustments 23 Service 24 Wiring Diagram Millivolt Gas Valves 24 Wiring Diagram Electronic Gas Valves 25 Repair Parts...

Page 2: ...ed firebox lining forced air fan assemblies a wall thermostat for use with vented gas fireplace heater models only and hand held remote ON OFF controls are available as options Refer to table 1 for mo...

Page 3: ...rical components if applicable are protected from water When 120 volt power is installed appliance must be elec trically grounded in accordance with local codes In addi tion in the United States insta...

Page 4: ...his includes restrictions on horizontal and ver tical vent lengths and vent termination locations 2 Center appliance between two wall studs if possible to simplify venting 3 If optional blower is used...

Page 5: ...10 254 MANTEL 8 203 MANTEL 6 152 MANTEL 4 102 MANTEL 4 102 14 356 12 305 10 254 2 51 MANTEL TOP OF APPLIANCE 6 152 NOTE Eyebrow shown as positioned in louvered front model The eyebrow position in the...

Page 6: ...he appliance Joints between the finished wall and the fireplace edges can only be sealed with a 300_F 149_C minimum sealant Non combustible materials can be used to cover the gap between the combustib...

Page 7: ...DT DTH DR DRH 3025 LOG PLACEMENT Log Stamping Part Number Log Number 1 195 2 196 3 197 4 198 Lennox Part Number Lennox Part Number for entire log set 18L76 19L60 19L61 19L62 19L63 4 2 1 3 2 3 4 1 FIG...

Page 8: ...DT DTH DR DRH 3530 LOG PLACEMENT Log Stamping Part Number Log Number 1 199 2 1910 3 1911 4 1912 2 3 4 1 Lennox Part Number Lennox Part Number for entire log set 18L77 19L64 19L65 21L10 21L11 4 2 1 3 F...

Page 9: ...LOG PLACEMENT Log Stamping Part Number Log Number 1 1919 2 1918 3 1920 4 1923 Lennox Part Number Lennox Part Number for entire log set 18L78 19L67 19L66 19L68 19L69 5 6 1921 19L70 1922 19L71 2 3 4 1...

Page 10: ...CEMENT Log Stamping Part Number Log Number 1 1924 2 1925 3 1920 4 1922 Lennox Part Number 19L72 19L73 19L68 19L71 5 6 1923 19L69 1921 19L70 1926 19L74 7 4 2 1 3 6 5 7 2 3 1 5 4 6 7 Lennox Part Number...

Page 11: ...g to figure 37 Electronic Ignition Units All electronic ignition units require 120 volt wiring Install wiring according to fig ure 38 When 120 volt electrical power is applied the ap pliance must be e...

Page 12: ...collars before assembling vent to collar Outer pipe must also be se cured to outer collar using three sheet metal screws See figure 11 Sealant must be applied to all rigid pipe joints and the outer pi...

Page 13: ...ESTRICTOR TOP FLUE OUTLET FIGURE 13 1 Provide a firestop spacer any time vent pipe must pass through a combustible floor ceiling or wall See figure 14 Refer to listing on page 26 for catalog num bers...

Page 14: ...2 ft min 6 ft max 3 ft min 9 ft max 4 ft min 12 ft max 5 ft min 15 ft max 17 ft max 6 ft min H V1 V2 V1 V2 40 ft Maximum H 17 ft Maximum Firestop Spacer must be used any time vent pipe passes through...

Page 15: ...t min 4 ft max 3 ft min 6 ft max 4 ft min 8 ft max 40 ft max 8 ft max H2 H1 V Firestop Spacer must be used any time vent pipe passes through combustible floor or ceiling or wall FIGURE 20 VERTICAL VEN...

Page 16: ...use only with Lennox approved concentric vent pipe either rigid or flexible vent pipe may be used when horizontally venting the fireplace through a side wall DT DTH Applications See figures 23 24 or...

Page 17: ...max 15 ft max V1 H1 H2 6 ft min 17 ft max 20 ft max 17 ft max Firestop Spacer must be used any time vent pipe passes through combustible floor or ceiling or wall RIGID VENT PIPE SHOWN FLEXIBLE VENT P...

Page 18: ...top Spacer must be used any time vent pipe passes through combustible floor or ceiling or wall RIGID VENT PIPE SHOWN FLEXIBLE VENT PIPE MAY ALSO BE USED NOTE THE LONGEST LENGTH OF FLEX AVAILABLE IS 48...

Page 19: ...MINATION AT TOP 3 in 76mm 1 in 25mm FIRESTOP SPACER AT INSIDE WALL SURFACE FACEPLATE INTEGRAL TO VENT TERMINATION VENT TERMINATION The termination faceplate shall not be recessed into a wall or siding...

Page 20: ...vice regulator vent outlet 3 ft 915mm in the United States and 6 ft 1 8m in Canada minimum J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance...

Page 21: ...32 LEAK CHECK After gas piping is completed carefully check all piping connections factory and field for gas leaks Use a leak detecting solution or other preferred means CAUTION Some soaps used for l...

Page 22: ...ob counterclock wise to ON 9 Restore electrical power to appliance if applicable 10 Turn ON the burner switch if applicable or set the thermostat to the desired setting if applicable 11 Close the bott...

Page 23: ...roved for elevations of 0 4500 feet 0 1372 meters When installing this unit at an elevation above 4500 feet 1372 meters consult the local authorities having jurisdiction ELECTRICAL NOTE These checks a...

Page 24: ...e and outside glass surfaces using a mild deter gent water solution and a soft cloth DO NOT use abrasive cleansers which might scratch the high temperature glass surface DO NOT clean glass when surfac...

Page 25: ...Unit mounted ON OFF switch is available as a factory installed option or can be ordered separately and field installed Wall mounted ON OFF switch is field provided Thermostat is available as a factor...

Page 26: ...it 97K75 45 Grate Kit 96K16 30 4 Piece Polished Brass Trim Assembly 96K17 35 4 Piece Polished Brass Trim Assembly Catalog Number Description 96K18 40 4 Piece Polished Brass Trim Assembly 96K19 45 4 Pi...

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