Enviro DV50DX NG User manual

50-741
This appliance may be installed
in an after market permanently
located, manufactured (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, unless a
certied kit is used.
SHERWOOD INDUSTRIES IS AN ENVIRONMENTALLY RESPONSIBLE COMPANY. THIS MANUAL IS PRINTED ON RECYCLED PAPER.
BY: SHERWOOD INDUSTRIES LTD
OWNER’S MANUAL
PLEASE KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
WHAT TO DO IF YOU SMELL GAS
• Open windows/extinguish any open ame.
• Do not try to light any appliance.
• Do not touch any electrical switch or use
any phone in your building.
• Immediately call your gas supplier from
a neighbour’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier, call
the re department.
WARNING
If the information in this manual is not followed exactly, a re or explosion
may result causing property damage, personal injury or loss of life.
Installation and service must be performed by a qualied installer, service
agency or the gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other ammable vapours and
liquids in the vicinity of this or any other appliance.
Massachusetts installations (Warning): This product must be installed by a licensed plumber or
gas tter when installed within the Commonwealth of Massachusetts. Other Massachusetts code
requirements: Flexible connector must not be longer than 36in, shut off valve must be a “T” handle
gas cock; only direct vent sealed combustion products are approved for bedrooms/bathrooms;
replace dampers must be removed or welded in the open position prior to the installation of a
replace insert or gas log.
DV50DX

FOR SAFE INSTALLATION AND OPERATION OF YOUR “ENVIRO” HEATER,
PLEASE CAREFULLY READ THE FOLLOWING INFORMATION:
• All ENVIRO gas-red appliances must be installed
in accordance with their instructions. Carefully read all
the instructions in this manual rst. Consult the building
authority having jurisdiction to determine the need for
a permit prior to commencing the installation.
• NOTE: Failure to follow these instructions could
cause a malfunction of the replace, which could
result in death, serious bodily injury, and/or property
damage.
• Failure to follow these instructions may also void
your re insurance and/or warranty.
GENERAL
• Installation and repair should be done by a
qualied service person. The appliance should be
inspected before the rst use and, at least, annually
by a qualied service person. More frequent
cleaning may be required due to excessive lint from
carpeting, bedding material, etc. It is imperative the
control compartments, burners and circulating air
passageways of the appliance be kept clean.
• Due to high temperatures, the appliance should
be located out of high trafc areas and away from
furniture and draperies.
Children and adults should be alerted to the
hazards of high surface temperatures and
should stay away to avoid burn or clothing
ignition.
• Young children should be carefully supervised
when in the same room as the appliance.
• Clothing or other ammable materials should not
be placed on or near the appliance.
FOR YOUR SAFETY
• Installation and service must be performed by a
qualied installer, service agency or gas supplier.
• This installation must conform to local codes or, in
the absence of local codes, to the current CAN/CGA-
B149 installation code (Canada) or National Fuel Gas
Code ANSI Z223.1.2 (USA)
• To prevent injury, do not allow anyone who is
unfamiliar with the stove to operate it.
• To prevent injury, if the pilot or pilot and
burners have gone out on their own, open the
glass door and wait 5 minutes to air out before
attempting to re-light the stove.
• Always keep the area around these appliances
clear of combustible material, gasoline and other
ammable liquids and vapours.
• These appliances should not be used as a drying
rack for clothing or for hanging Christmas stockings/
decorations.
• Due to the paint curing on the stove, a faint odor
and slight smoking will likely be noticed when the
stove is rst used. Open a window until the smoking
stops.
Always connect this gas stove to a vent system and
vent to the outside of the building envelope. Never
vent to another room or inside the building. Make sure
the specied vent pipe is used, properly sized and of
adequate height to provide sufcient draft. Inspect
the venting system annually for blockage and signs of
deterioration.
WARNING: Failure to position the parts in accordance
with the diagrams in this booklet, or failure to use only
parts specically approved with this appliance, may
result in property damage or personal injury.
WARNING: Do not operate with the glass front
removed, cracked or broken. Replacement of the
glass should be done by a licensed or qualied service
person.
• Never use solid fuels such as wood, paper,
cardboard, coal, or any ammable liquids, etc., in this
appliance.
• Do not use this heater if any part has been under
water. Immediately call a qualied service technician
to inspect the heater and to replace any part of the
control or gas control systems that have been under
water.
• Do not abuse the glass by striking it or slamming
the door shut.
Safety Precautions
2

Table of Contents
Safety Precautions.....................................................................................................2
Table of Contents......................................................................................................3
Codes And Approvals.................................................................................................4
Specications............................................................................................................5
Dimensions....................................................................................................5
Rating Label Location......................................................................................5
Operating Instructions...............................................................................................6
Pilot Lighting Instructions................................................................................6
Pilot Light......................................................................................................7
Venturi Adjustment.........................................................................................7
Burner Lighting..............................................................................................8
Remote Controls.............................................................................................8
Air Diverter Control.........................................................................................8
Blower Speed.................................................................................................8
Maintenance And Service...........................................................................................9
Routine Maintenance......................................................................................9
Cleaning The Glass.........................................................................................9
Cleaning The Firebox......................................................................................9
Replacing Glass..............................................................................................9
Cleaning Decorative Surfaces.........................................................................10
Glass Door Removal......................................................................................10
Fuel Conversion............................................................................................11
Initial Installation.....................................................................................................12
Introduction.................................................................................................12
Placement....................................................................................................12
Corner Installation........................................................................................13
Raised Fireplaces and Hearths.......................................................................13
Fireplace Surround........................................................................................14
Mantle Clearances........................................................................................15
Vent Parts and Terminal Clearances...............................................................15
Vent Termination Restrictions........................................................................16
Venting........................................................................................................17
Vent Congurations and Restrictor Settings....................................................18
Horizontal Termination..................................................................................19
Vertical Termination......................................................................................20
Ducting........................................................................................................23
Electrical Requirements.................................................................................24
Gas Line Connection and Testing...................................................................25
Secondary Installation..............................................................................................26
Ceramic Brick Liner Removal.........................................................................26
Log Set and Ember Installation......................................................................26
Log Set Assembly.........................................................................................27
Burner and Fan Removal...............................................................................30
Troubleshooting.......................................................................................................31
Parts List - Components...........................................................................................32
Parts Diagram.........................................................................................................33
Parts List- Options...................................................................................................34
Warranty.................................................................................................................35
Installation Data Sheet.............................................................................................36
3

DIRECT VENT ONLY: This type is identied by the prex DV. This appliance draws all of its air for
combustion from outside the dwelling, through a specially designed vent pipe system.
This appliance has been tested and approved for installations from 0 feet to 4500 feet (1372 m) above
sea level.
In the USA: The appliance may be installed at higher altitudes. Please refer to your American Gas
Association guidelines which state: the sea level rated input of Gas Designed Appliances installed at
elevations above 2000 (610 m) feet is to be reduced 4% for each 1000 feet (305 m) above sea level.
Refer also to local authorities or codes which have jurisdiction in your area regarding the de-rate
guidelines.
In Canada: When the appliance is installed at elevations above 4500 feet (1372 m), the certied high
altitude rating shall be reduced at the rate of 4% for each additional 1000 feet (305 m).
• This appliance has been tested by INTERTEK (Warnock Hersey) and found to comply with the
established VENTED GAS FIREPLACE HEATER standards in CANADA and the USA as follows:
VENTED GAS FIREPLACE HEATER (DV50DX; NG/LPG)
TESTED TO: ANSI Z21.88a-2003/CSA 2.33a-2003 VENTED GAS FIREPLACE HEATERS
CAN/CGA 2.17-M91 GAS FIRED APPLIANCES FOR HIGH ALTITUDES
CSA P.4.1-02 TESTING METHOD FOR MEASURING ANNUAL FIREPLACE EFFICIENCY
This ENVIRO DV50DX Fireplace:
• Has been certied for use with either natural or propane gases. (See rating label.)
• Is not for use with solid fuels.
• Is approved for bedroom or bed sitting room. (IN CANADA: must be installed with a listed wall
thermostat. IN USA: see current ANSI Z223.1 for installation instructions.)
Codes And Approvals
• Must be installed in accordance with local codes. If none exist, use current
installation code CAN/CGA B149 in Canada or ANSI Z223.1/NFPA 54 in the
USA.
• Must be properly connected to an approved venting system and not connected
to a chimney ue serving a separate solid-fuel burning appliance.
IMPORTANT NOTICE (Regarding rst re up): When the unit is turned
on for the rst time, it should be turned onto high without the fan on for
the rst 4 hours. This will cure the paint, logs, gasket material and other
products used in the manufacturing process. It is advisable to open a
window or door, as the unit will start to smoke and can irritate some people.
After the unit has gone through the rst burn, turn the unit off including the
pilot, let the unit get cold then remove the glass door and clean it with a
good gas replace glass cleaner, available at your local ENVIRO dealer.
4

Main vent
diameter 6 1/2"
The center of the ducting
hook-ups are 10 3/16"
from the center of the
main vent.
Gas/electrical
inlets are the
same on both
sides.
203/8"
(518mm)
75/16"
(186mm)
445/8"
(1134mm)
395/8"
(1006mm)
61/8"
(155mm)
81/8"
(206mm)
273/4"
(704mm)
1"
(25mm)
2"
(51mm)
17/16"
(37mm)
333/16"
(843mm)
4815/16"
(1243mm)
21/4"
(57mm)
101/16"
(256mm)
21/4"
(57mm)
RATING LABEL LOCATION:
The rating label is located under the control panel and is attached to a rectangular metal sheet that is
chained to the replace.
Specifications
INSTALLATION OPTIONS:
• Parallel to a wall or placed in a corner • With a oor hearth or raised up the wall
• Ducting to other rooms • Vertical or horizontal venting
WARNING:
Operation of this heater when not connected to a properly installed and maintained venting system can
result in carbon monoxide (CO) poisoning and possible death.
DIMENSIONS:
Figure 1. Dimensions of the Firebox.
5

WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY A FIRE OR EXPLOSION
MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OF LOSS OF LIFE.
PILOT LIGHTING INSTRUCTIONS:
Figure 2. Lighting instruction label.
CAUTION: Hot while operating. Do not touch. Severe burns may result. Keep children,
clothing, furniture, gasoline or other flammable vapors away.
CAUTION: Do not operate this fireplace with the glass removed, cracked or broken. Replacement of the panel(s) should
be done by a licensed or qualified person! This appliance needs fresh air for safe operation and must be installed with
provisions for combustion and ventilation air. See installation and operating instructions manual. Keep burner and control
compartment clean.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage, or
loss of life. Refer to owner's information manual provided with this appliance. For assistance or additional information
consult a qualified installer, service agency or the gas supplier.
Keep burner and control compartment clean. See installation and operating instructions accompanying appliance.
FOR YOUR SAFETY READ BEFORE
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING
PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
A) This appliance is equipped with a pilot, which must be lit by
hand by following these instructions exactly.
B) BEFORE LIGHTING smell all around the appliance area for
gas and next to the floor because some gas is heavier than
air and will settle on the floor.
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 neighbors' phone. Follow the gas
suppliers instructions. If you cannot reach your gas supplier, call
the fire department.
C) Use only your hand to push in or turn the gas control knob;
NEVER use tools. If the knob will not push in or turn by hand,
do not try to repair it. Call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
D) Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been under water.
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information above on this label.
2. Turn off all electrical power to this appliance.
3. Turn off the gas control knob clockwise to the off position.
4. Open door. Wait five (5) minutes to clear out any gas. Close
door. If you smell gas STOP! Follow “B” in the above safety
information. If you do not smell gas go to the next step.
5. Find pilot-located to the right behind the side log. Turn the gas
control knob counter-clockwise to “PILOT”. Push the
gas control in fully and hold, Keep knob depressed
for about 30 seconds after pilot is lit. Release knob.
If pilot goes out, repeat steps 4 through 5.
WARNING: this gas valve has a lockout device, which will
not allow the pilot burner to be relit until the thermocouple
has cooled. If the knob does not pop up when released,
stop and immediately call your service technician or gas
supplier.
If the pilot does not stay lit after several tries, turn the gas
control knob to “OFF” and call your service technician or
gas supplier.
6. Turn the gas control knob counter clockwise to the
“ON” position. Flip the burner switch to “ON” THEN TURN
THE “HI/LOW” knob to the desired setting.
7. Turn on the electrical power to the unit.
TO TURN OFF GAS TO APPLIANCE
1. Flip burner switch to “OFF”
2. Turn the gas control knob clockwise to the “OFF”
position
3. Turn off all electrical power to the appliance if service is to
be performed.

Operating Instructions
For Your Safety, Read Safety Precautions And Lighting Instructions Before Operating.
6

Operating Instructions
PILOT LIGHT:
1. Turn off the gas to the replace. If not recently done, remove the glass and let the unit air out
for at least ve (5) minutes to clear out any gas. Turn on gas to the heater. Leak test all joints
with soapy water. NEVER USE AN OPEN FLAME FOR LEAK TESTING.
 
Figure 3. Pilot ame.
2. Start the pilot by pressing the gas control knob and turning it to PILOT.
While holding the gas control knob in, press the piezo ignitor several
times until the pilot light starts. Hold the gas control knob in for thirty
(30) seconds. Check that the pilot has fully engulfed the thermocouple
assembly (see Figure 3).
3. Start the main burner by turning the gas control knob to ON and then turn
the rocker switch to ON. Check that all burner ports have ame.
4. Leak test all gas joints again.
VENTURI ADJUSTMENT:
The venturi adjustment lever is centered above the control panel.
The venturi allows the amount of air coming into the replace to be adjusted in order to accommodate
different climates and venting arrangements. Start the pilot and then the burner. Make sure the pilot
ame is burning normally and none of the burner ports are plugged. Let the replace burn for roughly
fteen (15) minutes and then examine the ames.
The ideal ame will be blue at the base and
light orange above (see Figure 42). The ames
should be of medium height. If the ames look
like this, no venturi adjustment is needed. If
the ames are fairly short and mostly blue, the
replace is getting too much air. Therefore, the
air shutter should be closed (push in) slightly
until the correct ames are achieved. Flames
that are very orange, with tall dark stringy tips
are not getting enough air. Open (pull out) the
venturi until the ames clean up. If the venturi is
opened, then closed all the way, and the correct
ames cannot be attained, turn off the gas and
contact the dealer.
Figure 4. Venturi Adjustment Lever
Warning: Incorrect venturi adjustment may lead to improper combustion, which is a safety hazard.
Contact the dealer if there is any concern about the venturi adjustment.
NEVER USE AN OPEN FLAME FOR LEAK TESTING
7

Operating Instructions
BURNER LIGHTING:
A) Make sure the pilot is lit.
B) Turn gas control knob COUNTER CLOCKWISE to ON.
C) Flip the burner switch to ON.
D) Turn HI/LO knob to the desired ame height.
E) Turn on all electrical power to the unit.
NOTE: Check that all burner holes are lit.
TO TURN GAS FIREPLACE OFF
Flip switch to OFF to turn off burners only.
If the replace is to be turned off for the season, or for
servicing, turn the gas shut off valve to OFF. DO NOT
FORCE IT. If the unit is going to be serviced, turn off the electrical power to the unit as well.
NOTE: When the unit is turned on for the rst time, it should be turned onto high, with the fan OFF, for
the rst four (4) hours. This will cure the paint, logs, gasket material, and other products used in the
manufacturing process. It is advised that a door or window be opened as the unit will start to smoke,
which can irritate some people. After the unit has gone through the rst burn, turn the unit OFF, including
the pilot, and let the unit get completely cold. Then remove the glass and clean it with a good gas
replace glass cleaner, available at your local Enviro dealer. See MAINTENANCE AND SERVICE - CLEANING THE
GLASS and MAINTENANCE AND SERVICE - GLASS DOOR REMOVAL.
REMOTE CONTROLS:
This replace can use an optional remote control or an optional cordless wall thermostat. If either of
these are to be used to control the replace for the majority of the time, leave the ON/OFF switch (on the
control panel) in the remote/thermostat position. Consult the instructions included with the remote/wall
thermostat for operation guidelines.
AIR DIVERTER CONTROL:
When the blower is on, the amount of air ow into the room can be adjusted
with the air diverter. When the lever is to the far left the room receives the
air, when the lever is to the far right the air goes out the duct and when
the lever in the middle the air goes to both the duct and the room. Lever is
found above the right end of the control panel, see Figure 6.
BLOWER SPEED:
The blower will come on only when the replace is up to temperature (approximately
20 minutes). The speed of the fan can be changed by turning the fan control knob.
To turn the blower off, turn the knob COUNTER CLOCKWISE until it “clicks” off
(Figure 7).
It is advisable not to operate the blower below 1/3 speed as it puts a strain on the
windings of the blower and running the blower at lower speeds could also cause
premature fan failure.
Figure 5. Control Panel
Figure 7. Fan
Control
Room
Duct
AirDiverter
Figure 6. Air Diverter



8

Maintenance And Service
ROUTINE MAINTENANCE:
At least once a year, run through the following procedures to ensure the system is clean and working
properly. Check the burner to see if all the ports are clear and clean. Check the pilot to make sure it is not
blocked by anything. The pilot ame should be blue with little or no yellow on the tips.
Warning: Clearances must be sufcient to allow access for maintenance and service
Warning: Failure to position the parts in accordance with this manual, or failure to use only parts
specically approved with this appliance may result in property damage or personal injury.
The venting system must be periodically examined; it is recommended the examination is done by a
qualied agency.
CLEANING THE GLASS:
When the replace has cooled, remove the face of the replace along with the glass. See MAINTENANCE
AND SERVICE - GLASS DOOR REMOVAL. Check the gasket material on the back of the glass, making sure that
it is attached and intact.
During a cold start up, condensation will sometimes form on the glass. This is a normal condition with all
replaces. However, this condensation can allow dust and lint to cling to the glass surface. Initial paint
curing of the appliance can leave a slight lm behind the glass, a temporary problem. The glass will need
cleaning about two weeks after installation. Use a mild glass cleaner and a soft cloth; abrasive
cleaners will damage the glass and plated surfaces. Depending on the amount of use, the glass
should require cleaning no more than two or three times a season. Do not clean the glass when it is
hot.
CLEANING THE FIREBOX:
Remove the logs carefully, as they are very fragile. Gently remove all the embers and rock wool and place
on a paper towel. Vacuum the bottom of the rebox thoroughly. Carefully clean any dust off the logs and
remove any lint from the burner and pilot. At this time, inspect the burner pan for cracking or severe
warping. If a problem is suspected, contact the dealer. Check the logs for deterioration or large amounts
of soot; a small amount on the bottom side of the logs is normal. Replace the logs and embers as in the
LOG SET AND EMBER INSTALLATION section. If new/more embers and rock wool are required, contact your
nearest ENVIRO dealer.
REPLACING GLASS:
The glass in the replace is a high temperature ceramic. If the glass is damaged in any way, a factory
replacement is required (see PARTS LIST - COMPONENTS). Wear gloves when handling damaged glass door
assembly to prevent personal injury. When the glass door assembly is being transported, it must be
wrapped in newsprint and tape and/or a strong plastic bag. Do not operate with the glass front removed,
cracked or broken. Removal and replacement of the glass from the door must be done by a licensed or
qualied service person. The glass must be purchased from an ENVIRO dealer. No substitute
materials are allowed.
9

Maintenance And Service
CLEANING DECORATIVE SURFACES:
Painted and porcelain faces should be wiped with a damp cloth periodically. If a plated face has been
purchased, it should be unpacked/unwrapped carefully to avoid getting anything on the surface of the
nish, including cleaners, polish and nger prints. It is important to note that ngerprints and other
marks can leave a permanent stain on plated nishes. To avoid this, give the face a quick wipe with
denatured alcohol on a soft cloth BEFORE lighting the replace. Never clean the face when it is
hot. Do not use other cleaners as they may leave a residue, which can become permanently etched into
the surface.
If your ngers come into contact with the antique copper nish, the oils left as ngerprints on the copper
can cause discoloration, which will eventually turn green in that area. You can clean the patina or discolored
areas of the antique copper nish with “OO” 3M green sanding pads. These can be purchased from most
hardware stores. On the areas with discoloration, use the sanding pads to sand in the same direction as
the brushed nish, then blend the nish by feathering in the surrounding area. This renishing procedure
has been approved by the manufacturer and will not harm the nish. Please note: ANTIQUE COPPER IS
THE ONLY FINISH THAT CAN BE SANDED, DO NOT SAND PEWTER, GOLD OR NICKEL FINISHES.
GLASS DOOR REMOVAL:
glass
In order to install the log set, and for regular
cleaning, the glass door will need to be
removed. With the face off, there are two
(2) handles on either side of the glass. They
rotate 90° until parallel with the oor (see
Figure 8). The top of the glass will move
away from the rebox and then the glass
door can be lifted off the resting points.
To replace the glass door, simply reverse the
above procedure.
Warning: Do not touch or attempt to
remove the glass if the replace is not
completely cold.
WARNING: Never operate the replace
with the glass removed.
Figure 8. Glass Removal Handle
10