Monessen Hearth Systems 36CDVZRRN, 36CDVZTRN Installation Manual

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INSTALLER/CONSUMER
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CER TIF IED
SAFETY INFORMATION
PLEASE READ THIS MANUAL BEFORE INSTALLING AND USING APPLIANCE
WARNING! IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO­SION MAY RESULT CAUSING PROPERTY DAMAGE, PER­SONAL INJURY OR LOSS OF LIFE.
Builder Direct Vent Models: 36CDVZRRN (Rear Vent) 36CDVZTRN (Top Vent)
FOR YOUR SAFETY Installation and service must be performed by a qualified installer, service agency or the gas supplier.
WHAT TO DO IF YOU SMELL GAS:
Installation Instructions and
Do not try to light any appliance.
Do not touch any electric switch;
do not use any phone in your building.
Homeowner’s Manual
Immediately call your gas
supplier from your neighbor’s phone. Follow the gas suppliers instructions.
If you cannot reach your gas
supplier call the fire department.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.
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CDVZ Series Direct Vent Gas Fireplace
Table of Contents
PLEASE READ THE INSTALLATION & OPERATING INSTRUCTIONS
BEFORE USING APPLIANCE.
Thank you and congratulations on your purchase of a MHSC fireplace. IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these instructions fully may result in a possible fire hazard and will void the warranty.
Installation & Operating Instructions
General Information, Warnings, Cautions ............................................................................................3
Requirements for the Commonwealth of Massachusetts ....................................................................4
Fireplace Dimensions ..........................................................................................................................5
Locating Your Fireplace .......................................................................................................................7
Clearance to Combustibles .................................................................................................................7
Mantels .............................................................................................................................................7
Hearth .............................................................................................................................................8
Framing and Finishing .........................................................................................................................8
Hood Installation ..................................................................................................................................8
Final Finishing .....................................................................................................................................8
Gas Specifications ...............................................................................................................................9
Gas Inlet and Manifold Pressures .......................................................................................................9
High Elevations ....................................................................................................................................9
Gas Line Installation ............................................................................................................................9
Remote ON/OFF Switch ......................................................................................................................9
120V Electrical Hook Up ....................................................................................................................10
General Venting Information
General Venting .................................................................................................................................10
General Venting Information-Termination Location ...........................................................................11
General Information Assembling Vent Pipes .....................................................................................12
36CDVZR Venting - How to Use the Vent Graph ..............................................................................13
Rear Wall Venting Applications & Installation (Exterior outside wall 7” - 20” from rear of unit) ..........13
Rear Wall Vent Installation - Flex Vent PIpe ......................................................................................15
Rear Wall Vent Application (Exterior outside wall 13” - 20” from rear of unit) ....................................16
Rear Wall Vent Application (Exterior outside wall 20” - 32” from rear of unit) ....................................16
Vertical Sidewall Applications & Installation .......................................................................................17
Below Grade Installation ....................................................................................................................19
Vertical Through-the-Roof Applications & Installation ........................................................................20
36CDVZT Vertical Venting - How to Use the Vent Graph ..................................................................22
36CDVZT Top Vent Baffle ..................................................................................................................22
Vertical Sidewall Applications & Installation .......................................................................................23
Below Grade Installation ....................................................................................................................25
Vertical Through-the-Roof Applications & Installation ........................................................................26
Operating Instructions
Glass Information ..............................................................................................................................28
Louvre Removal ................................................................................................................................28
Window Frame Assembly Removal ...................................................................................................28
Glass Cleaning ..................................................................................................................................28
Logs ...........................................................................................................................................29
Ember Material and Lava Rock Placement .......................................................................................29
Flame & Temperature Adjustment .....................................................................................................29
Flame Characteristics ........................................................................................................................29
Lighting and Operating Instructions ...................................................................................................30
Troubleshooting .................................................................................................................................32
Fuel Conversion Instructions .............................................................................................................33
Maintenance
Cleaning the Standing Pilot Control System ......................................................................................35
Replacement Parts ...................................................................................................................................36
Venting Components ........................................................................................................................................38
Optional Accessories ................................................................................................................................40
Warranty .......................................................................................................................................................43
Energuide ....................................................................................................................................................44
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20014621
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Installation & Operating Instructions
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This gas appliance should be installed by a qualified installer, preferably NFI or WETT (Canada) certified, in accordance with local building codes and with current CSA-B149.1 Installation codes for Gas Burning Appliances and Equipment. For USA Installations follow local codes and/or the current National Fuel Gas Code. ANSI Z223.1/NFPA 54. FOR SAFE INSTALLATION AND OPERATION PLEASE NOTE THE FOLLOWING:
1. This fireplace gives off high temperatures and should be located out of high traffic areas and away from furniture and draperies.
2. Children and adults should be alerted to the hazards of high surface temperatures of this fireplace and should stay away to avoid burns or ignition of clothing.
3. CAUTION: Due to high glass surface temperature chil-
dren should be carefully supervised when in the same room as fireplace.
4. Young children should be carefully supervised when
they are in the same room as the appliance. Tod­dlers, young children and others may be susceptible to accidental contact burns. A physical barrier is recommended if there are at risk individuals in the house. To restrict access to a fireplace or stove, install an adjustable safety gate to keep toddlers, young children and other at risk individuals out of the room and away from hot surfaces.
5. Under no circumstances should this fireplace be modified. Parts removed for servicing should be replaced prior to operating this fireplace again.
6. Installation and any repairs to this fireplace must be performed by a qualified installer, service agency or gas supplier. A professional service person should be contacted to inspect this fireplace annually. Make it a practice to have all of your gas fireplaces checked annually. More frequent cleaning may be required due to excess lint and dust from carpeting, bedding material, etc.
7. Control compartments, burners and air passages in this fireplace should be kept clean and free of dust and lint. Make sure the gas valve and pilot light are turned off before you attempt to clean this fireplace.
8. The venting system (chimney) of this fireplace should be checked at least once a year and if needed your venting system should be cleaned.
9. Keep the area around your fireplace clear of combustible materials, gasoline and other flammable vapor and liquids. This fireplace should not be used as a drying rack for cloth­ing, nor should Christmas stockings or decorations be hung on or around the fireplace.
20014621
CDVZ Series Direct Vent Gas Fireplace
10. Under no circumstances should any solid fuels (wood, coal, paper or cardboard etc.) be used in this fireplace.
11. The flow of combustion and ventilation air must not be obstructed in any way.
12. When fireplace is installed directly on carpeting, vinyl tile or any combustible material other than wood, the fireplace must be installed on a metal or wood panel extending the full width and depth of the fireplace.
13. This fireplace requires adequate ventilation and combustion air to operate properly.
14. This fireplace must not be connected to a chimney flue serving a separate solid fuel burning fireplace.
15. When the fireplace is not in use it is recommended that the gas valve be left in the OFF position.
16. These units have been approved for bedroom use.
WARNING: Check with your electronics manufacturer before installing a television or other electronic de­vice above this fireplace.
This appliance may be installed in an aftermarket permanently located, manufactured home or 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 certified kit is used. The CDV ZR has bee n approv ed for mob ile home installations.
IMPORTANT:
PLEASE REVIEW THE FOLLOWING CAREFULLY
Remove any plastic from trim parts before turning the fireplace ON. It is normal for fireplaces fabricated of steel to give off some expansion and/or contraction noises during the start up or cool down cycle. Similar noises are found with your furnace heat exchanger or car engine. It is not unusual for your gas fireplace to give off some odor the first time it is burned. This is due to the curing of the paint and any undetected oil from the manufacturing process.
Please ensure that your room is well ventilated ­open all windows.
It is recommended that you burn your fireplace for at least ten (10) hours the first time you use it. If the optional fan kit has been installed, place the fan switch in the “OFF” position during this time.
Proposition 65 Warning: Fuels used in gas, wood­burning or oil fired appliances, and the products of combustion of such fuels, contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. California Health & Safety Code Sec. 25249.6
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CDVZ Series Direct Vent Gas Fireplace
Installation & Operating Instructions
Requirements for the Commonwealth of Massachusetts
All gas fitting and installation of this heater shall only be done by a licensed gas fitter or licensed plumber.
For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and ANSI/UL 2034 listed and IAS certified.
Signage
A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW, KEEP
CLEAR OF ALL OBSTRUCTIONS”.
Inspection
The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.
Exemptions
The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the most current edition of NFPA 54 as adopted by the Board; and
Product Approved side wall horizontally vented gas
fueled equipment installed in a room or structure separate from the dwelling, building or structure used in whole or in part for residential purposes.
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:
Detailed instructions for the installation of the venting
system design or the venting system components; and
A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies “special venting systems”, the following requirements shall be satisfied by the manufacturer:
The referenced “special venting system” instructions
shall be included with the appliance or equipment installation instructions; and
The “special venting systems” shall be Product
Approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.
A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.
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CDVZ Series Direct Vent Gas Fireplace
76”
(187 mm)
166
(422 mm)
3656M” (921 mm)
Minimum Rough Opening Width
Minimum Rough Opening Height
Minimum Rough Opening Depth
*4856M” (1226 mm) **416” (1051 mm)
*68
56M
” (1734 mm)
**586
” (1483 mm)
1756
(435 mm)
25” (635 mm)
22”
(559 mm)
1856O
(470 mm)
2156”
(537 mm)
3556M” (895 mm)
35”
(889 mm)
346M
(883 mm)
2(6”
(73 mm)
16”
(35 mm)
356M
(83 mm)
Gas Line Access
Gas Line Access
Low Voltage Electrical Access
Electrical Access
33” (838 mm)
C
L
Centerline of 7" Collar
856O
(216 mm)
Low Voltage Access
16
(35 mm)
76
(187 mm)
856O
(216 mm)
3256
(816 mm)
14”
(356 mm)
356M”
(83 mm)
*Must be adhered to if using 7TCD45KT Flex Vent Kit
**If using Rigid 45° with Starter Pipe
*4856M” (1226 mm)
**416” (1051 mm)
*3456
” (867 mm)
**2956
” (740 mm)
Fireplace Dimensions - Rear Vent
*
*
*
*
Fig. 1 Fireplace specifications and framing dimensions.
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36CDVZR / 36CDVZT
Certified To
ANSI Z21.88-2009 / CSA 2.33-2009
Vented Gas Fireplace Heaters
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CDVZ Series Direct Vent Gas Fireplace
76” (187 mm)
166
(422 mm)
3656M” (921 mm)
Minimum Rough Opening Width
Minimum Rough Opening Height
Minimum Rough Opening Depth
416” (1051 mm)
586” (1483 mm)
1756
(435 mm)
25” (635 mm)
2156
(537 mm)
3556M” (895 mm)
35”
(889 mm)
346M
(883 mm)
2(6
(73 mm)
16” (35 mm)
356M
(83 mm)
Gas Line Access
Low Voltage Electrical Access
Electrical Access
33” (838 mm)
856O” (216 mm)
Low Voltage Access
16
(35 mm)
76
(187 mm)
856O
(216 mm)
3256
(816 mm)
14”
(356 mm)
8” (203 mm)
2956
(740 mm)
416” (1051 mm)
356M
(83 mm)
Gas Line Access
CAUTION:
*Maintain minimum 1” clearance between combustible header and vent pipe.
Fireplace Dimensions - Top Vent
Fig. 2 Fireplace specifications and framing dimensions.
*NOTE: If using a 2 x dimensional lumber for header, install on-end to maintain 1” minimum clearance to vent pipe.
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CDVZ Series Direct Vent Gas Fireplace
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Mantel Leg
O
N
M
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K
Y
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A
B
C
D
F
Y
B
X
X
A B C D E
V
W
X
Y
Z
Fireplace
Locating Your Fireplace
LU584-R
Fig. 3 Locate gas fireplace.
A) Flat on wall B) Cross corner C) **Island D) Room divider E) Flat on wall corner F) Chase installation Y) Refer to “Clearance to Combustibles” Section
NOTE: (Fig. 3) ** Island (C) and Room Divider (D) installation is possible as long as the horizontal portion of the vent system (X) does not exceed 20’ (6 m) with a minimum vertical of 4’ (122 cm). See details in Venting Section.
Clearance to Combustibles
Top of Unit to Ceiling ............................... 36” (914 mm)
Front of Unit to Combustibles .................. 36” (914 mm)
Appliance
Top .......................................................... 0” (0 mm)
Bottom ..................................................... 0” (0 mm)
Side ......................................................... 0” (0 mm)
Back ........................................................ 0” (0 mm)
Venting
Concentric sections of DV Vent
Top, bottom & sides .............................. 1” (25 mm)
Flex Vent................................................... 7/8” (22 mm)
NOTE: Hood must be permanently installed with three (3) sheet metal screws supplied in fireplace. (Refer to hood installation in this manual.)
Mantels
Finish Wall
Noncombustible Material
3/4” (19 mm) Scribe Moulding for use with MHSC Cabinets
Standoff
Hood
Top of Combustion Chamber
CFM146
Mantel Chart
Mantel Shelf or Mantel from Top of
Ref. Breast Plate Depth Ref. Combustion Chamber
V 10” (254 mm) A 17” (432 mm) W 8” (203 mm) B 15” (381 mm) X 6” (152 mm) C 13” (330 mm) Y 4” (101 mm) D 11” (279 mm) Z 2” (51 mm) E 9” (229 mm)
Fig. 4a Combustible mantel minimum installation.
3/4” (19 mm) Scribe Moulding for use with MHSC Cabinets
Black Surround Face
CFM164a
Side of Combustion Chamber
The height that a combustible mantel is fitted above the fireplace is dependent on the depth of the mantel. This also applies to the distance between the mantel leg (if fitted) and the fireplace.
For the correct mounting height and widths refer to Figs. 4a and 4b, and the following Mantel Charts.
The fitting of a bay window trim kit does not effect the distances and reference points referred to in the diagram and chart.
Noncombustible mantels and legs may be installed at any height and width around the appliance.
When using paint or lacquer to finish the mantel, such paint or lacquer must be heat resistant to prevent discoloration.
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CFM170
Mantel Mantel Leg FromSide
Ref. Leg Depth Ref. of Comb. Opening
F 10” (254 mm) K 11¹⁄₂” (292 mm) G 8” (203 mm) L 9¹⁄₂ (241 mm) H 6” (152 mm) M 7¹⁄₂ (191 mm) I 4” (101 mm) N 5¹⁄₂ (140 mm) J 2” (51 mm) O 3¹⁄₂ (89 mm)
Fig. 4b Combustible mantel leg minimum installation.
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CDVZ Series Direct Vent Gas Fireplace
A
B
Hearth
A hearth is not mandatory but is recommended for aesthetic purposes. We recommend a noncombustible hearth which projects out 12” (305 mm) or more from the front of the fireplace.
Cold climate installation recommendation:
When installing this unit against a non-insulated exterior wall or chase, it is mandatory that the outer walls be insulated to conform to applicable insulation codes.
Framing and Finishing
Check fireplace to make sure it is levelled and properly positioned.
To mount the appliance:
1. Choose the location.
2. This unit comes with four (4) flanges pre-mounted on both sides of the fireplace to allow two different drywall thicknesses to be used. Flange “A” is for 1/2” drywall while flange “B” is for 5/8” drywall.
3. Bend the desired flanges out 90° on both sides of the fireplace. Slide the fireplace into the framed opening until the flanges contact the front surfaces of the framing. Level the unit and secure it firmly in place.
4. The standoffs are adjustable for different drywall thicknesses. The unit is shipped from the factory at 1/2” (13 mm). Loosen the four (4) screws securing each standoff to the top of the fireplace. Slide the standoff back. Tighten the screws. This yields a 5/8” (16 mm) thick drywall space. Removing the standoff and having the tabs on the standoff face the rear of the unit yields a 3/4” (19 mm) drywall space. (Fig. 5)
NOTE: Drywall must stop at standoffs and not touch top of unit.
Flange Drywall
Position Depth A 1/2” / 13 mm B 5/8” / 16 mm
Standoff Location for Desired Finish Wall Depth at Header
Fig. 5 Nailing flanges and standoffs.
Hood
Screws
Tabs
Flange Location for Desired
Drywall Depth at Stud Wall
FP1603
FP1603a
Hood Installation
CAUTION: Hood MUST be permanently installed.
1. Remove top panel by removing two (2) screws on each end. Carefully remove hood from inside top opening.
2. Remove three (3) sheet metal screws in bottom flange of panel.
3. Install the hood by aligning the three holes in bottom flange of panel top. (Fig. 6)
4. Secure hood to bottom flange of top panel using three screws removed in Step 2. (Fig. 6)
5. Carefully remove protectors under the relief plates on top of the firebox.
6. Replace top panel.
8
Sheet Metal Screws
FP1609
Fig. 6 Secure hood to fireplace with sheet metal screws.
Final Finishing
Noncombustible materials such as brick or tile may be extended over the edges of the face of the fireplace. DO NOT cover any vent or grille panels. If a Trim Kit is going to be installed on the fireplace, the brick or tile will have to be installed flush with the edges of the fireplace.
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CDVZ Series Direct Vent Gas Fireplace
TP TH
TP
TH
Gas Specifications
Max. Min. Input Input Model Fuel Gas Control BTU/h BTU/h 36CDVZRRN Nat Millivolt 21,000 14,700 36CDVZRRP* Prop Millivolt 21,000 15,750 36CDVZTRN Nat Millivolt 21,000 14,700 36CDVZTRP* Prop Millivolt 21,000 15,750
*Using conversion kit
Gas Inlet and Manifold Pressures
Natural LP (Propane)
Inlet Minimum 5.5” w.c. 11.0” w.c.
Inlet Maximum 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10.0” w.c.
High Elevations
Input ratings are shown in BTU per hour and are certified without deration for elevations up to 4,500 feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA, installations must be in accordance with the cur­rent ANSI Z223.1/NFPA 54 and/or local codes hav­ing jurisdiction.
In Canada, please consult provincial and/or local authorities having jurisdiction for installations at elevations above 4,500 feet (1,370 m).
Gas Line Installation
When purging the gas lines, the front win­dow frame assembly must be removed.
The gas pipeline can be brought in through the rear of the appliance as well as the bottom. Knockouts are provided on the bottom behind the valve to allow for the gas pipe installation and testing of any gas connection. It is most convenient to bring the gas line in from the rear right side of the valve as this allows fan installation or removal without disconnecting the gas line.
The gas line connection can be made with properly tinned 3/8” copper tubing, 3/8” rigid pipe or an ap­proved flex connector. Since some municipalities have additional local codes, it is always best to consult your local authority and the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the USA or the CSA-B149.1 installa­tion code.
Always check for gas leaks with a mild soap and water solution. Do not use an open flame for leak testing.
1/2” Gas Supply
1/2” NPT x 1/2” Flare Shut­off Valve
3/8” Flex Line (From Valve)
FP297A
Fig. 7 Typical gas supply installation.
The gas control is equipped with a captured screw type pressure test point, therefore it is not necessary to pro­vide a 1/8” test point up stream of the control.
When using copper or flex connector use only approved fittings. Always provide a union when using black iron pipe so the gas line can be easily disconnected for burner or fan servicing. See gas specification for pres­sure details and ratings.
The fireplace valve must not be subjected to any test pressures exceeding 1/2 psi. Isolate or disconnect this and any other gas appliance control from the gas line when pressure testing.
Remote ON/OFF Switch
Installation
1. Carefully unwrap the remote wire that is attached to the valve. There are two 1/2” (13 mm) knockouts, one on each side of the outer casing.
2. Remove the knockout desired and insert the plastic snap bushing on the remote wire in the 1/2” hole. Feed the remote wire through the outer casing.
3. Attach the wire to an ON/OFF switch (not supplied) and install the switch into the receptacle box. (Fig. 8)
Remote ON/OFF Switch or Thermostat or Remote Control
Gas Control Valve
FP1224
Fig. 8 Remote switch wiring diagram.
Do not wire the remote ON/OFF wall switch for the gas fireplace to the 120 volt power supply.
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CDVZ Series Direct Vent Gas Fireplace
OUTSIDE
INSIDE
120V Electrical Hook Up
The fireplace, when installed, must be electrically connected and grounded in accordance with local codes or, in the ab­sence of local codes, with the current CSA C22.1 Canadian Electrical Code.
For USA installations follow local codes and the national electrical code ANSI/ NFPA No. 70.
It is strongly suggested that wiring of the Electrical Junction Box be carried out by a licensed electrician.
Ensure that the power to the supply line has been disconnected before commenc­ing this procedure.
The electrical junction box has been fitted standard on this model to allow for the easy connection of an op­tional fan kit.
To connect the electric box to the house electrical sup­ply follow the steps below.
1. Unscrew the retaining screw holding the electric cover to the outside of the unit. (Fig. 9)
2. Remove the knockout from the electric cover plate.
3. Insert the wire connector through the hole in the electric cover plate and secure.
4. Insert the house wire through the connector on the cover plate.
5. Secure the wires from the receptacle to the incoming line.
6. The receptacle has four wires connected to it. The receptacle is set up for a split system. The top plug of the receptacle is wired separately from the bottom one.
7. Green is ground. White is neutral, Black and red are line voltage to each plug on the receptacle.
Electric Receptacle
Electric Receptacle Cover Plate
FP1597
Fig. 9 Electric receptacle.
General Venting
Your fireplace is approved to be vented either through the side wall, or vertically through the roof.
Only MHSC venting components specifically ap-
proved and labelled for this fireplace may be used.
Vent terminations shall not be recessed into a wall or
siding.
Horizontal venting which incorporates the twist lock
pipe must be installed on a level plane without an inclining or declining slope.
Horizontal venting which incorporates the use of flex
venting shall have an inclining slope from the unit of 1” (25 mm) per 24” (610 mm).
There must not be any obstruction such as bushes,
garden sheds, fences, decks or utility buildings within 24” (610mm) from the front of the termination hood.
Do not locate termination hood where excessive snow or ice build up may occur. Be sure to check vent termi­nation area after snow falls, and clear to prevent ac­cidental blockage of venting system. When using snow blowers, make sure snow is not directed towards vent termination area.
Location of Vent Termination
It is imperative the vent termination be located observ­ing the minimum clearances as shown on the next page.
*Check with local codes or in absence of same with CSAB149.1 Installation Codes (1991) for Canada or fol­low the current National Fuel Gas Code, ANSI Z223.1/ NFPA 54 for installations in the USA.
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CDVZ Series Direct Vent Gas Fireplace
V
V
V
V
V
V
V
X
X
X
D
E
B
B
B
C
B
M
B
A
J
K
F
L
VENT TERMINATION AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
H
I
Ýi`
Ãi`
Operable
Operable
Fixed
Closed
V
B
INSIDE
CORNER DETAIL
V
A
G
N
N
CFM145a
General Venting Information - Termination Location
Canadian Installations1 US Installations
A = Clearance above grade, veranda, porch, 12” (30cm) 12” (30cm) deck, or balcony
B = Clearance to window or door that may be 6” (15cm) for appliances 6” (15cm) for appliances opened < 10,000Btuh (3kW), 12” (30cm) < 10,000 Btuh (3kW), 9” for appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000 < 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for appliances > 50,000 Btuh (15kW)
C = Clearance to permanently closed window 12” (305mm) recommended to 12” (305mm) recommended to prevent window condensation prevent window condensation D = Vertical clearance to ventilated soffit located above the terminal within a horizontal 18” (458mm) 18” (458mm) distance of 2’ (610mm) from the center line of the terminal
E = Clearance to unventilated soffit 12” (305mm) 12” (305mm) F = Clearance to outside corner see next page see next page G = Clearance to inside corner (see next page) see next page see next page H = Clearance to each inside of center line 3’ (91cm) within a height of 15’ (5m) 3’ (91cm) within a height of 15’
extended above meter/regulator assembly above the meter/regulator assembly (5m) above the meter/regulator assy
I = Clearance to service regulator vent outlet 3’ (91cm) 3’ (91cm) J = Clearance to nonmechanical air supply inlet 6” (15cm) for appliances < 10,000 6” (15cm) for appliances
to building or the combustion air inlet to any Btuh (3kW), 12” (30cm) for < 10,000 Btuh (3kW), 9” other appliances appliances > 10,000 Btuh (3kW) and (23cm) for appliances > 10,000 < 100,000 Btuh (30kW), 36” (91cm) Btuh (3kW) and < 50,000 Btuh for appliances > 100,000 Btuh (30kW) (15kW), 12” (30cm) for appliances > 50,000 Btuh (15kW)
K = Clearance to a mechanical air supply inlet 6’ (1.83m) 3’ (91cm) above if within 10 feet (3m) horizontally
L = Clearance above paved sidewalk or paved 7’ (2.13m)† 7’ (2.13m)† driveway located on public property
M = Clearance under veranda, porch, deck or 12” (30cm)‡ 12” (30cm)‡ balcony
N = Clearance above a roof shall extend a minimum of 24” (610mm) above the highest point when it passes through the roof surface, and any other obstruction within a horizontal distance of 18” (450mm).
1 In accordance with the current CSA-B149 Installation Codes 2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Codes † A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings ‡ only permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor: NOTE: 1. Local codes or regulations may require different clearances.
2. The special venting system used on Direct Vent Fireplaces are certified as part of the appliance, with clearances tested and approved by the listing agency.
3. MHSC assumes no responsibility for the improper performance of the appliance when the venting system does not meet these requirements.
Fig. 10 Vent termination locations.
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11
Page 12
CDVZ Series Direct Vent Gas Fireplace
Outside Corner
Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
G =
Combustible 6" (152 mm)
Noncombustible 2" (51 mm)
F =
Combustible 6" (152 mm)
Noncombustible 2" (51 mm)
G
Balcony ­with no side wall
M =
Combustible & Noncombustible 12" (305 mm)
M
Balcony ­with perpendicular side wall
M = 24" (610 mm) P = 20” (508 mm)
M
F
Alcove Applications*
C
D
C
E
V
V
Combustible & Noncombustible
V
V
V
E = Min. 6” (152 mm) for
non-vinyl sidewalls Min. 12” (305 mm) for vinyl sidewalls
O = 8’ (2.4 m) Min.
O
P
*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All mechanical air intakes within 10’ (1 m) of a termination cap must be a minimum of 3’ (914 mm) below the termination cap. 3. All gravity air intakes within 3’ (914 mm) of a termination cap must be a minimum of 1’ (305 mm) below the termination cap.
Fig. 11 Termination clearances.
Canadian Installations:
Venting system must be installed in accordance with the current CSA-B149.1 installation code.
USA Installations:
The venting system must conform with local codes and/ or the current National Fuel Gas code ANSI Z223.1/ NFPA 54.
Only venting components manufactured by MHSC canMHSC can can be used in Direct Vent systems.
Flex Vent Pipes
Before joining the flex vent pipe to the unit, apply a bead of high temperature sealant* (provided) to the 4” pipe exiting the fireplace. Secure flex vent pipe in place with a hose clamp (provided).
*Be sure the flex pipe overlaps at least 1” (25 mm) onto the collars of the fireplace and termination. If the ter­mination has an internal bead, be sure to overlap and secure 1” (25 mm) past the bead.
12
General Information Assembling Vent Pipes
* Be sure the vent is actually crushed before proceed­ing. Apply a tug to be sure the vent will not slip off the collars.
Repeat process with 7” flex vent pipe. The same proce­dure must be performed on the vent side.
Fig. 12 Apply high temperature sealant to 4” and 7” pipes.
No.
of Caps D 1 3’ (914 mm) 2 x D 2 6’ (1.8 m) 1 x D 3 9’ (2.7 m) 2/3 x D 4 12’ (3.7 m) 1/2 x D
D
= # of Termination caps x 3
Min.
C
= (2 / # termination caps) x D
Max.
Hose Clamp
C
Min.
Max.
Actual
Actual
Actual
Actual
Actual
584-15
Apply High Tempera­ture Sealant
FP1471a
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Page 13
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
eg: A
eg: B
Twist Lock Pipes
When using MHSC twist-lock pipe, it is not necessary toMHSC twist-lock pipe, it is not necessary to twist-lock pipe, it is not necessary to use sealant on the joints. The only areas of the venting system that need to be sealed with high temperature silicone sealant are the sliding joint of any telescopic vent section used in the system.
To join the twist lock pipes together, simply align the beads of the male end with the grooves of the female end, then while bringing the pipe together, twist the pipe until the flange on the female end contacts the external flange on the male end. It is recommended that you secure the joints with three (3) sheet metal screws, however this is not mandatory with twist lock pipe.
To make it easier to assemble the joints we suggest putting a lubricant (Vaseline or similar) on the male end of the twist lock pipe prior to assembly.
Male End Female End
CDVZ Series Direct Vent Gas Fireplace
Vertical dimension from the floor of the unit
to the center of the horizontal vent pipe
Screw Holes
Fig. 13 Twist-lock pipe joints.
36CDVZR Venting
How to Use the Vent Graph
The vent chart should be read in conjunction with the following vent installation instructions to determine the relationship of the vertical and horizontal dimensions of the vent system.
1. Determine the height of the center of the horizontal vent pipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph (Fig. 14) locate the point intersecting with slanted graph line.
2. From the point of this intersection, draw a vertical line to the bottom of the graph.
3. Select the indicated dimension, and position the fireplace in accordance with same.
Example A: If the vertical dimension from the floor of the
fireplace is 11’ (3.4 m) the horizontal run to the face of the outer wall must not exceed 14’ (4.3 m).
Example B: If the vertical dimension from the floor of the unit is
7’ (2.14 m), the horizontal run to the face of the outer wall must not exceed 8¹⁄₂’ (2.6 m).
20014621
TWL100
Horizontal dimension from the outside face of the
wall to the center of the fireplace vent flange
Sidewall vent graph showing the relationship between vertical
and horizontal dimensions for a Direct Vent flue system.
Fig. 14 Sidewall venting graph. (Dimensions in feet)
Rear Wall Venting Applications
* Exterior Outside Wall
7” (178 mm) to 20” (508 mm)
From Rear of Unit *
With this application, the following rigid pipe kits may be used:
7” to 13” (178 - 330 mm) to outside wall: 7TCRVT 13” to 20” (330 - 305 mm) to outside wall: 7TCRVT1320 45° elbow with 20” (508 mm) Starter for corner applica­tions
When installed as a rear vent unit this appliance may be vented directly to a termination located on the rear wall behind the appliance.
Only MHSC venting components are approved to beMHSC venting components are approved to be venting components are approved to be
used in these applications. (Refer to “Venting Com­ponents” listed for different installation requirements)
The maximum straight out the back horizontal
distance between the rear of the appliance and the outside face of the rear wall is 20” (508 mm). The minimum is 7” (178 mm). (Fig. 15)
13
Page 14
CDVZ Series Direct Vent Gas Fireplace
20"
(508 mm)
Max.
Top View
Straight Venting
Fig. 15 Rear vent applications.
FP1598
Minimum clearances between vent pipe and com-
bustible materials are as follows:
Top - 1” (25 mm) Sides - 1” (25 mm) Bottom - 1” (25 mm)
The maximum horizontal distance between the end of the transition elbow in a corner application and the outside face of the rear wall is 20” (508 mm). (Fig. 16)
Only one 45° elbow is allowed in these installations.
Vent Opening for Combustible Wall
When using all venting except 7TCRVT1320
9³⁄₈
(240 mm)
When using 7TCRVT1320 venting Only
10³⁄₈
(264 mm)
Fig. 17 Locate vent opening on wall.
9³⁄₈
(240 mm)
9³⁄₈
(240 mm)
7¹⁄₂
(190 mm)
Fireplace Hearth
Framing Detail
Opening for Noncom-
bustible Wall
VO584-100
20” (508 mm)
Max.
FP1188
Fig. 16 Rear vent application, one 45° elbow.
Rear Wall Installation
Twist Lock Pipe
STEP 1
Locate vent opening on the wall. To locate hole center consult with appropriate fireplace dimensions, Page 4. Frame as shown below.
Combustible Walls (Fig. 17): Cut a 9³⁄₈”H x 9³⁄₈” W (240 x 240 mm) hole through the exterior wall and frame as shown. For 7TCRVT1320 cut a 10³⁄₈”H x 9³⁄₈” W (264 x 240 mm) hole.
Noncombustible Walls (Fig. 17): Hole opening must be 7¹⁄₂” (190 mm) in diameter.
STEP 2
Install interior firestop as shown in Figure 18.
STEP 3
Remove telescoping collar from termination.
14
Bend Tab
Firestop
Fig. 18 Install firestop.
FP1600
STEP 4
Bend tab on outer casing up and insert collar onto fire­place collars. (Fig. 18)
STEP 5
Twist the termination collar so it locks onto fireplace col­lars. Run screw through tab to keep collar from turning. (Fig. 19)
STEP 6
Slide fireplace into position.
STEP 7
From the outside of the house, slide the termination onto the collars.
STEP 8
Secure the termination to the house with the four (4) screws provided.
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Page 15
CDVZ Series Direct Vent Gas Fireplace
22”
(559 mm)
C
L
C
L
to Floor
2956O
(749 mm)
Finished Wall
Secure with Screw
Vent Termination
Firestop
FP1005a
Fig. 19 Side view of final unit location.
Rear Wall Vent Installations -
45° Flex Vent Pipe
Using Kit 7TCD45KT
NOTE: The corner placement dimensions on Page
5, Figure 1 of the manual must be adhered to! Figures 20 & 21 show general installations. Refer to instructions below for a detailed description of instal­lation.
1. Determine where the termination is to be in­stalled. Locate the center of the hole 29Z\x
(749 mm) off the floor. (Fig. 20)
NOTE: The location of the termination hole must be
adhered to!
2. Install the firestop as shown on Page 14.
3. Remove the flex vent and extend the flex vent out to its longest length.
4. Bend the tab on the back of the fireplace up. (Fig.
18)
5. Insert the collar on the flex vent that has the twist lock embosses on it onto the collar of the fire-
Termination
Flex Section
Appliance Collars
FP1473
Fig. 20 Grasp the vent pipe close to the collar and bend to 45° angle. Do not exceed 45°.
place. Twist the collar to “lock it” onto the fireplace. Run a screw through the tab and into the collar to secure the collar onto the fireplace.
6. Bend the flex pipe up 90° as close to the fireplace as possible. (Fig. 21)
7. Slide the fireplace partially into the corner and, while holding the vertical portion of the flex vent pipe, grab the exposed end collar and bend it down to the height of the opening in the wall.
8. While pushing the unit in place, slide the collar through the firestop. NOTE: It may be necessary to trim some material off of the collar. The collar is made long to accommodate brick finished houses. (Fig. 23)
9. Secure the collar in place by running a screw through the tab in the firestop and through the col­lar.
10. Slide the termination into the collar and secure with the 4 screws provided. (Fig. 23)
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Page 16
CDVZ Series Direct Vent Gas Fireplace
FP1604
Fig. 21 Bend flex pipe up 90° as close to fireplace as pos­sible.
Corner Framing
Do Not Exceed 45° Bend
Screw
Screws
Flex Vent
Collar
13” - 20”
(330 - 508 mm)
Fig. 24 The centerline of the termination must be 24¹⁄₂ (622 mm) off the floor.
24¹⁄₂
(622 mm)
FP1605a
3. Proceed with Step 3 of “Rear Wall Vent Application *Exterior Outside Wall 20” to 32” (508-813 mm) from Rear of Unit” section (below).
Rear Wall Vent Application
* Exterior Outside Wall
20” - 32” (508 - 813 mm)
From Rear of Unit * Using Flex Vent Kit
7TCD45KT
Termination
FP1606
Fig. 22 Rear view of corner installation.
Screw
Screws
Flex Vent
Collar
FP1605
Fig. 23 Secure collar in place, slide termination into collar.
Rear Wall Vent Application
* Exterior Outside Wall
13” to 20” (330 - 508 mm)
From Rear of Unit * Using Flex Venting Kit
1. Determine the location of the termination. (Fig. 24) IMPORTANT: Vent must have a 2¹⁄₂” (64 mm) rise
for this application.
2. Locate the hole 24Z\x” (622 mm) off the floor. This is the center line of the termination. Refer to “Rear Wall Installation Twist Lock Pipe” section.
1. Determine where the termination is to be installed. (Fig. 25)
2. Locate the hole 27Z\v” (692 mm) off the floor. This is the center line of the termination. Refer to “Rear Wall Installation Twist Lock Pipe” section.
Screw
Screws
Flex Vent
Collar
20” - 32”
(508 - 813 mm)
Fig. 25 The centerline of the termination must be 27¹⁄v (692 mm) off the floor.
27¹⁄v
(692 mm)
FP1605a
3. Mount the flex pipe assembly to the fireplace collars and twist the collar that the flex pipe is attached to onto the fireplace.
4. Once the collar is twisted onto the fireplace collar, secure with a screw through the tab. (Fig. 19)
5.
While sliding the fireplace into position, lift up the end of the flex pipe and slip it through the firestop. *Be careful not to extend the flex too much. The flex pipe
16
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Page 17
CDVZ Series Direct Vent Gas Fireplace
10 ft. (3048 mm)
7 ft. 6 in. (2286 mm)
7 ft. (2134 mm)
A
B
Maximum 3' (914mm)
Maximum
20 ft. (6.1m)
7.5'
(2.3m)
needs to have an immediate rise before going hori­zontal. NOTE: Be careful not to distort the outer flex as this will affect the performance of the fireplace.
6. Secure the collar to the firestop by bending the tab out on the firestop and running a screw through the tab and collar.
7. From outside the house, slide the termination onto the collars sticking through the firestop.
8. Secure the termination to the house with the four (4) screws provided. Be sure to seal around the termi­nation and house cladding.
Vertical Sidewall Applications
Since it is very important that the vent­ing system maintain its balance between the combustion air intake and the flue gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to.
The Vent Graph shows the relationship between vertical and horizontal side wall venting and will help to deter­mine the various dimensions allowable.
Minimum clearance between vent pipes and combustible materials is 1” (25 mm) on top, bottom and sides unless otherwise noted.
When vent termination exits through foundations less than 20” below siding outcrop, the vent pipe must flush up with the siding. It is always best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent length.
The horizontal vent run refers to the total length of vent pipe from the flue collar of the fireplace to the face of the outer wall.
Horizontal plane means no vertical rise exists on this portion of the vent assembly.
The maximum horizontal vent run is 20 ft. (6.1 m)
when the vertical vent rise is 7¹⁄₂ ft. (2.3 m). (Fig. 26)
Vertical Dimension 7¹⁄₂’ Minimum When Horizontal Run is 20’
CFM141
Fig. 26 Maximum number of 90° elbows is three (3).
20014621
7TDV90
7TCDV90
The maximum number of 90° elbows per side wall
installation is three (3).
If a 90° elbow is used in the horizontal vent run
(level height maintained) the maximum horizontal vent length is reduced by 36” (914 mm). (Fig. 27) This does not apply if the 90° elbows are used to increase or redirect a vertical rise. (Fig. 28)
7TCDV90
CFM142
Fig. 27 Maximum horizontal vent run.
90° Elbow = 3 ft.
A + B = 17 ft. (Max.)
CFM147
Fig. 28 Maximum vent run with elbows.
Example: According to the chart the maximum
horizontal vent length in a system with a 7.5’ (2.3 m) vertical rise is 20’ (6 m) and if a 90° elbow is required in the horizontal vent it must be reduced to 17’ (5.2 m). In Figure 28 Dimension A plus B must not be greater than 17’ (5.2 m).
The maximum number of 45° elbows permitted per
side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run.
For each 45° elbow installed in the horizontal run,
the length of the horizontal run MUST be reduced by 18” (45 cm). This does not apply if the 45° elbows are installed on the vertical part of the vent system.
The maximum number of elbow degrees in a system
is 270°. (Fig. 29)
17
Page 18
CDVZ Series Direct Vent Gas Fireplace
8
X
1
2
3
4
1 + 2 + 3 + 4 = 270
o
Example: Elbow 1 = 90° Elbow 2 = 45° Elbow 3 = 45° Elbow 4 = 90° Total angular variation = 270°
Ensure Pipes are Concentric
7TCDV90
CFM143a
Fig. 30 Always start vertical run with 7TCDV90 on 36CDVR unts.
Fig. 29 Maximum number of elbows.
•IMPORTANT• Minimum clearance between vent pipes and
combustible materials is one (1”) inch (25 mm)
on bottom, sides and top.
Twist Lock Vent Starter Kit 7TCRVT, plus Elbow 7TCDV90 must be used in Vertical Sidewall installations.
Canadian & USA Installations:
The venting system must conform with local codes, or in the absence of local codes, with National Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition, or CSA B149.1 Installation Code.
Only MHSC venting components specifically approved and labelled for this fireplace may be used.
Vertical Sidewall Installation
STEP 1
Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible or noncombustible, cut opening to size. (Page 14, Fig.
17)
For combustible walls first frame in opening.
Combustible Walls (Fig. 17): Cut a 9³⁄₈”H x 9³⁄₈” W (240 x 240 mm) hole through the exterior wall and frame. For 7TCRVT1320 cut a 10³⁄₈”H x 9³⁄₈” W (264 x 240 mm) hole.
Noncombustible Walls (Fig. 17): Hole opening must be 7.5” (190 mm) in diameter.
STEP 2
Slide venting component on collar of fireplace. Secure component to fireplace by running a screw (self-tap­ping) through tab & into outer casing. (Fig. 30)
CFM132
STEP 3
Measure the horizontal length requirement including a 2” (51 mm) overlap, i.e. from the elbow to the outside wall finish plus 2”, or the distance required if installing a second 90° elbow. (Fig. 31)
Always install hori­zontal venting on a level plane.
CFM136
Fig. 31 Measure horizontal length including 2” overlap.
STEP 4
Use appropriate length of pipe section - telescopic or fixed - and install the horizontal vent sections. A starter section of pipe which goes through the wall is packaged with the 7TCRVT kit, and can be cut to suit if necessary. (Fig. 32)
Sealing between the vent pipe and firestop with high temperature sealant will restrict cold air being drawn in around fireplace.
STEP 5
Guide the vent termination’s 4” and 7”
collars into their respective vent pipes. Double check that the vent pipes overlap the collars by 2” (51 mm). Secure the termination to the wall with screws provided and caulk around the wall plate to weatherproof. (Fig. 33)
18
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Page 19
CDVZ Series Direct Vent Gas Fireplace
X
X
X
24" (610mm)
Minimum*
High Temperature Sealant
CFM137
Fig. 32 Apply high temperature sealant.
CFM138
Fig. 33 Horizontal length requirement.
STEP 6
Support the horizontal pipes every 36” (914 mm) with metal pipe straps. Make sure that the horizontal vent pipe is installed on a level horizontal plane.
STEP 7
Re-check the fireplace to make sure that it is levelled, properly positioned, and nailed or screwed to the floor. If applied, the fireplaces adjustable frame drywall strips (nailing flanges) should be fastened. Refer to “Framing & Finishing”.
Below Grade Installation
When it is not possible to meet the required vent ter­minal clearances of 12” (305 mm) above grade level a snorkel vent kit #7TDVSNORK is required. It allows installation depth of down to 7” (178 mm) below grade level. The 7” is measured from the center of the hori­zontal vent pipe as it penetrates through the wall.
If venting system is installed below ground, we recommend a window well with adequate and proper drainage.
Ensure sidewall venting clearances are observed.
The maximum horizontal run with 24” vertical rise is 36” (914 mm) from the back of the fireplace to the face of the exterior wall. See vent graph (Page 13) for extended horizontal run if the vertical rise exceeds 24” (610 mm).
1. Establish vent hole through the wall. (Fig. 17)
2. Remove soil to a depth of approximately 16” (406mm) below base of snorkel. Install window well (not supplied). Refill hole with 12” (305 mm) of coarse gravel leaving a clearance of approximately 4” (102 mm) below snorkel. (Fig. 34)
3. Install vent system. See Page 14, Steps 2 through 5.
4. Ensure a watertight seal is made around the vent pipe coming through the wall.
5. Apply high temperature sealant caulking around the 4” and 7” snorkel collars.
6. Slide into the vent pipe and secure to the wall.
7. Level the soil to maintain a 4” (102 mm) clearance below snorkel. (Fig. 34)
7TDVSNORK (Snorkel)
Firestop
7” Pipe
Foundation Wall
4” (102mm) Clearance Min.
Window Well
Gravel
Drain
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*A minimum of 24” (608mm) vertical pipe must be installed when using 7TDVSNORK Kit.
BG400
Fig. 34 Below grade installation.
19
Page 20
CDVZ Series Direct Vent Gas Fireplace
Do not back fill around snorkel. A clearance of at least 4” (102 mm) must be maintained between the snorkel and the soil.
If the foundation is recessed, use recess brackets (not supplied) for securing lower portion of the snorkel. Fasten brackets to wall first, then secure to snorkel with self drilling #8 x 1/2 sheet metal screws. It will be necessary to extend vent pipes out as far as protruding wall face. (Fig. 35)
Snorkel
Foundation Recess
Recess Brackets
Watertight Seal Around Pipe
Fig. 35 Snorkel installation, recessed foundation.
Wall Screws
Sheet Metal Screws
BG401
Example: Maximum horizontal length 0 x 45° elbows = 10’ (3 m)
1 x 45° elbows = 8¹⁄₂’ (2.6 m) 2 x 45° elbows = 7’ (2.1 m)
3. A minimum of an 8’ vertical rise.
4. Two sets of 45° elbows offsets within these vertical installations. From 0 to a maximum of 8’ (2.4 m) of vent pipe can be used between elbows. (Fig. 37)
5. 7DVCS must be used to support offsets. (Fig. 36) This application will require that you first determine the roof pitch and use the appropriate 7DVSKV (A, B or F). (Refer to Venting Components List, Page 27)
Max.
8’
(2.4 m)
45°
Max.
8’
(2.4 m)
50’
(15 m)
Typical Ceiling
Support
Application
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for:
1. Vertical installations up to 50’ (15 m) in height. Up to 10’ (3 m) horizontal vent run can be installed within the vent system using a maximum of three 90° elbows.
2. Up to two 45° elbows may be used within the horizontal run. For each 45° elbow used on the horizontal level the maximum horizontal length must be reduced by 18” (457 mm).
Maximum
10’
Minimum
8’ (2.4 m) /
Maximum
50’ (15 m) Vertical
Rise
Fig. 36 Support straps for horizontal runs.
(3 m)
Pipe Straps Every 3’ (914 mm)
CFM148
45°
Typical Roof
Support Ap-
plication
Typical Offset Installation
Fig. 37 Typical vertical roof applications.
FP1021
Vertical Through-the-Roof Installation
1. Locate your fireplace.
2. Plumb to center of the (4”) flue collar from ceiling above and mark position.
3. Cut opening equal to 9³⁄₈” x 9³⁄₈” (240 x 240 mm). 10³⁄₈” x 9³⁄₈” (264 x 240 mm) when using 7TCRVT1320.
4. Proceed to plumb for additional openings through the roof. In all cases, the opening must provide a minimum of 1 inch clearance to the vent pipe, i.e., the hole must be at least 9³⁄₈” x 9³⁄₈” (240 x 240 mm).
5. Place fireplace into position.
6. Place firestop(s) #7DVFS or Attic Insulation Shield #7DVAIS into position and secure. (Fig. 38)
20
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Page 21
CDVZ Series Direct Vent Gas Fireplace
11"
11"
Min. 2' (610 mm)
Attic Insulation Shield
Joist
Ceiling Installation
Upper Floor
Joist
Firestop Spacer
Nails (4)
CFM100
Fig. 38 Place firestop spacer(s) and secure.
If there is room above ceiling level, firestop spacer must be installed on both the bottom and the top side of the ceiling joists. If an attic is above ceiling level a 7DVAIS (Attic Insulation Shield) must be installed. (Fig. 38)
7. Install roof support (Fig. 39) and roof flashing making sure upper flange is below the shingles. (Fig. 40)
8. Install appropriate pipe sections until the venting is above the flashing. (Fig. 40)
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig
41)
Roof
2’ Min.
Roof Support
50’
(15 m)
Attic Insulation Shield
Attic Insulation
Joists
Fig. 39 Typical straight-up installation.
3 #5 Sheet Metal Screws per Joint
Sealant
Fig. 40 Roof flashing.
The enlarged ends of the vent section always face down. (Fig. 37)
Vent Termination
Storm Collar
Roof Flash­ing
Joists
FP1022
Storm Collar
TWL101a
20014621
FP1185
Fig. 41 Minimum termination to roof clearance.
21
Page 22
CDVZ Series Direct Vent Gas Fireplace
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
eg: A
eg: B
X
36CDVZT Vertical Venting
How to Use the Vent Graph
The vent chart should be read in conjunction with the following vent installation instructions to determine the relationship of the vertical and horizontal dimensions of the vent system.
1. Determine the height of the center of the horizontal vent pipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph (Fig. 42), locate the point intersecting with the slanted graph line.
2. From the point of this intersection, draw a vertical line to the bottom of the graph.
3. Select the indicated dimension, and position the fireplace in accordance with same.
Example A:
If the vertical dimension from the floor of the fireplace is 11’ (3.4 m) the horizontal run to the face of the outer wall must not exceed 14’ (4.3 m).
Example B:
If the vertical dimension from the floor of the unit is 7’ (2.14 m), the horizontal run to the face of the outer wall must not exceed 8¹⁄₂’ (2.6 m).
36 CDVZT Top Vent Baffle
The 36CDVZT is shipped with a restrictor installed in the unit. This allows for a better flame when installing a vertical venting configuration. Below is a rough esti­mate of opening positions based on vent length. This is a guide. More fine tuning can be done by a qualified installer. Adjust the restrictor so there is no lifting of the flame from the burner tube and the flame is not dirty to create soot.
To adjust:
1. Loosen the two (2) screws securing the flue baffle. (Fig. 43)
2. Remove two (2) screws from either side of the flue box. (Fig. 43) Adjust the restrictor. (Fig. 44)
3. Tighten the screws in the flue baffle and insert the two (2) screws removed earlier through the slots in the restrictor.
Flue Box
Loosen Screws
Flue Pipe
Remove Screws from Either side
Flue Baffle
Vertical dimension from the floor of the unit
to the center of the horizontal vent pipe
Horizontal dimension from the outside face of the
wall to the center of the fireplace vent flange
Sidewall vent graph showing the relationship between vertical
and horizontal dimensions for a Direct Vent flue system.
Fig. 42 Sidewall venting graph. (Dimensions in feet)
22
Fig. 43 Loosen screws securing flue baffle.
Restrictor
Up to 10’ (3 m) X = 1¹⁄₂” (38 mm) 10’ to 40’ (12 m) X = 1¹⁄v” (32 mm)
Fig. 44 Adjust the restrictor for best flame appearance.
FP1797
FP1799
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Page 23
Vertical Sidewall Applications
20' (6m)
7.5' (2.3m)
3'
(914mm)
7.5'
(2.3m)
A
B
A + B = 17' (5.2m) Max.
Since it is very important that the vent­ing system maintain its balance between the combustion air intake and the flue
gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to.
The vent graph showing the relationship between verti­cal and horizontal side wall venting will help to deter­mine the various dimensions allowable.
Minimum clearance between vent pipes and combustible materials is one 1” (25 mm) on top, bottom and sides unless otherwise noted.
When the vent termination exits through foundations less than 20” (508 mm) below siding outcrop, the vent pipe must flush up with the siding.
It is always best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent length. The horizontal vent run refer to the total length of vent pipe from the flue collar of the fireplace to the face of the outer wall.
CDVZ Series Direct Vent Gas Fireplace
FP1237
Fig. 46 Maximum horizontal vent run.
1 x 90° elbow in horizontal plane = 3’ (914mm)
Pipe Straps Every 3’ (914mm)
Pipe Straps Every 3’ (914mm)
Firestop/Zero Clearance Sleeve
FP1012
Fig. 45 Support straps for horizontal runs.
Horizontal plane means no vertical rise exists on this portion of the vent assembly.
The maximum number of 90° elbows per side wall
installations is three (3).
If a 90° elbow is fitted directly onto the fireplace
flange the maximum horizontal vent run before the termination or a vertical rise is 36” (914 mm).
If a 90° elbow is used in the horizontal vent run
(level height maintained) the maximum horizontal vent length is reduced by 36” (914 mm). This does not apply if the 90° elbows are used to increase or redirect a vertical rise.
Example: According to the chart the maximum
In Figure 46, Dimension A plus B must not be
20014621
horizontal vent length in a system with a 7.5’ (2.3 m) vertical rise is 20’ (6 m) and if a 90° is required in the horizontal vent it must be reduced to 17’ (5.2 m).
greater than 17’ (5.2 m).
FP1238
Fig. 47 Maximum vent run with elbows.
The maximum number of 45° elbows permitted per
side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run.
For each 45° elbow installed in the horizontal run,
the length of the horizontal run MUST be reduced by 18” (457 mm). This does not apply if the 45° elbows are installed on the vertical part of the vent system.
The maximum number of elbow degrees in a system
is 270°. (Fig. 48)
Vertical Sidewall Installations
STEP 1
Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible or noncombustible, cut opening to size. (Fig. Page 13, Fig. 17)
For combustible walls first frame in opening. Combustible Walls: (Fig. 17) Cut a 9³⁄₈”H x 9³⁄₈”W (240
x 240 mm) hole through the exterior wall and frame as shown. or 7TCRVT1320 cut a 10³⁄₈”H x 9³⁄₈” W (264 x 240 mm) hole.
Noncombustible Walls: (Fig. 17) Hole opening must be 7¹⁄₂” (190 mm) in diameter.
23
Page 24
CDVZ Series Direct Vent Gas Fireplace
1
2
3
4
X
X
Example: Elbow 1 = 90° Elbow 2 = 45° Elbow 3 = 45° Elbow 4 = 90°
Total angular variation = 270°
1 + 2 + 3 + 4 = 270°
FP1241
Fig. 50 Horizontal length requirement.
Always install horizontal venting on a level plane.
FP1239
Fig. 48 Maximum number of elbow degrees.
STEP 2
Place fireplace into position. (Fig. 49) Measure the verti­cal height (X) required from the base of the flue collars to the center of the wall opening.
STEP 3
Attach appropriate venting component(s) to the fire­place with three (3) screws. (Fig. 50) Follow with the installation of the inner and outer elbow. Again secure joints with three (3) sheet metal screws.
FP1240
STEP 5
Use appropriate length of pipe sections - telescopic or fixed - and install the horizontal vent sections. The sec­tions which go through the wall are packaged with the starter kit, and can be cut to suit if necessary. (Fig. 48)
Sealing the gaps between the vent pipe and firestop with high temperature sealant will restrict cold air being drawn in around fireplace.
STEP 6
Guide the vent terminations 4” and 7” collars into their respective vent pipes. Double check that the vent pipes overlap the collars by 2” (51 mm). Secure the termina­tion to the wall with screws provided and caulk around the wall plate to weatherproof. (Fig. 52) As an alterna­tive to screwing the termination directly to the wall you may also use expanding plugs or an approved exterior construction adhesive. You may also attach the termi­nation with screws through the inner body into the 4” (102 mm) vent pipe however for this method you must extend the 4” (102 mm) pipe approximately 6” (152 mm) beyond the outer face of the wall.
Support horizontal pipes every 3’ (914 mm) with metal pipe straps. Make sure the horizontal vent pipe is in­stalled on a level horizontal plane.
Fig. 49 Vertical height requirement.
STEP 4
Measure the horizontal length requirement including a 2” (51 mm) overlap, ie from the elbow to the outside wall face plus 2” (51 mm) (or the distance required if installing a second 90° elbow). (Fig. 50)
24
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Page 25
FP1242
Fig. 51 Through the wall.
FP1243
Fig. 52 Apply high temperature sealant to collars or termina­tions.
CDVZ Series Direct Vent Gas Fireplace
Below Grade Installations
When it is not possible to meet the required vent ter­minal clearances of 12” (305 mm) above grade level a snorkel vent kit is recommended. It allows installation depth of down to 7” (178 mm) below grade level. The 7” is measured from the center of the horizontal vent pipe as it penetrates through the wall.
If venting system is installed below ground, we recommend a window well with adequate and proper drainage.
Ensure sidewall venting clearances are observed.
If installing a snorkel a minimum 24” (610 mm) vertical rise is necessary. The maximum horizontal run with the 24” (610 mm) vertical pipe is 36” (914 mm). This measurement is taken from the collar of the fireplace (or transition elbow) to the face of the exterior wall. Refer to the Sidewall Vent Graph for extended horizontal run if the vertical rise exceeds 24” (610 mm).
1. Establish vent hole through the wall. (Page 14, Fig.
17)
2. Remove soil to a depth of approximately 16” (406 mm) below base of snorkel. Install drain pipe. Install win­dow well (not supplied). Refill hole with 12” (305 mm) of coarse gravel leaving a clearance of approximately 4” (102 mm) below snorkel. (Fig. 53)
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe coming through the wall.
5. Apply high temperature sealant caulking around the 4” and 7 “ snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the wall.
7. Level the soil to maintain a 4” (102 mm) clearance below snorkel. (Fig. 53)
20014621
Do not back fill around snorkel. A clearance of at least 4” (102 mm) must be maintained between snorkel and the soil.
If the foundation is recessed, use recess brackets (not supplied) for securing lower portion of the snorkel. Fasten brackets to wall first, then secure to snorkel with self drilling #8 x 1/2 sheet metal screws. It will be necessary to extend vent pipes out as far as protruding wall face. (Fig. 54)
25
Page 26
CDVZ Series Direct Vent Gas Fireplace
Max. 10' (3m)
Max. Height
40' (12m)
Min. Height
756O' (2.3m)
Zero Clearance Sleeve (if required)
Firestop
7” Pipe
24” (610mm) Minimum*
BG402
Fig. 53 Below grade installation.
Foundation Recess
Recess Brackets
Watertight Seal Around Pipe
Fig. 54 Snorkel installation, recessed foundation.
Screws
Gravel
Drain
Foundation Wall
*A minimum of 24” (610mm) ver­tical pipe must be installed when using the 7TDVSNORK Kit.
*The 22” (559mm) vertical rise (center to center) of the snorkel may be included for calculationof max. horizontal run.
Snorkel
Wall Screws
Sheet Metal Screws
7TDVSNORK (Snorkel)
4” (102mm) Clearance Min.
Window Well
BG401
Pipe Straps Every 3’ (914mm)
FP1244
Fig. 55 Support straps for horizontal runs.
Two sets of 45° elbows offsets within these vertical
installations. From 0 to a maximum of 8’ (2.m) of vent pipe can be used between elbows. (Fig. 56)
7DVCS must be used to support offsets. (Fig. 58)
This application will require that you first determine the roof pitch and use the appropriate starter kit. (Refer to Venting Components List)
The minimum height of the vent above the highest
point of penetration through the roof is 2’ (610 mm). (Fig. 60)
This Gas Fireplace has been approved for:
Vertical installations up to 40’ (12 m) in height. Up
Up to two 45° elbows may be used within the
Example: Maximum horizontal length 0 x 45° elbows = 10’ (3 m) 1 x 45° elbows = 8¹⁄₂’ (2.6 m) 2 x 45° elbows = 7’ (2.1 m)
A minimum of an 8’ (2.4 m) vertical rise.
26
Vertical Through-the-Roof Applications
to a 10’ (3 m) horizontal vent run can be installed within the vent system using a maximum of two 90° elbows. (Fig. 55)
horizontal run. For each 45° elbow used on the horizontal level the maximum horizontal length must be reduced by 18” (457 mm).
Vertical Through-the-Roof Installation
1. Locate your fireplace.
2. Plumb to center of the (4” (102 mm) flue collar from ceiling above and mark position.
3. Cut opening equal to 9³⁄₈” x 9³⁄₈” (240 x 240 mm).10³⁄₈” x 9³⁄₈” (264 x 240 mm) when using 7TCRVT1320.
4.
Proceed to plumb for additional openings through the roof. In all cases, the opening must provide a minimum of 1” (25 mm) clearance to the vent pipe, i.e., the hole must be at least 9³⁄₈” x 9³⁄₈” (240 x 240 mm).
5. Place fireplace into position.
6. Place firestop(s) #7DVFS or Attic Insulation Shield #7DVAIS into position and secure. (Fig. 57)
7. Install roof support (Fig. 58) and roof flashing making sure upper flange of flashing is below the shingles. (Fig. 59)
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Page 27
1
2
3
4
Max. 8' (2.4m)
1 + 2 + 3 + 4 = 270°
11"
11"
Min.
2' (610 mm)
CDVZ Series Direct Vent Gas Fireplace
8. Install appropriate pipe sections until the venting is above the flashing. (Fig. 58)
9. Install storm collar and seal around the pipe.
10. Add additional vent lengths for proper height. (Fig.
60)
11. Apply high temperature sealant to 4” and 7” collars.
Fig. 56 Typical offset application.
Attic Insulation Shield
Joist
FP1245
Typical Roof Support
Application
Typical Ceiling Sup-
Fig. 58 Roof and ceiling supports.
Fig. 59 Roof flashing.
port Application
#8 Sheet Metal Screws (3 per joint)
Sealant
Storm Collar
CFM110
TWL101a
Ceiling In-
Upper Floor
stallation
Fig. 57 Place firestop spacer(s) and secure.
Firestop Spacer
Nails (4)
20014621
Joist
CFM100
CFM190
Fig. 60 Minimum termination to roof clearance.
If there is a room above ceiling level, firestop spacer must be installed on both the bottom and the top side of the ceiling joists. If an attic is above ceiling level a 7DVAIS (Attic Insulation Shield) must be installed.
The enlarged ends of the vent section always face downward. (Fig. 59)
27
Page 28
CDVZ Series Direct Vent Gas Fireplace
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Operating Instructions
Glass Information
Only glass approved by MHSC should be used on this fireplace.
The use of any non-approved replacement glass will
void all product warranties.
Care must be taken to avoid breakage of the glass.
Do not operate appliance with glass front
removed, cracked or broken.
Replacement glass (complete with gasket) is
available through your MHSC dealer and should only be installed by a licensed qualified service person.
Lower Clamps
Window Frame Assembly
Fig. 62 Window frame assembly removal.
Push Clamp Handle
Window Frame Assembly
Pull Clamp Hook
FP1228
Valve Access Panel Removal
The valve access panel is removed by lifting the panel vertically and pulling it away from the appliance. (Fig. 61)
Fig. 61 Remove lower panel.
Window Frame Assembly Removal
1. Turn the fireplace OFF (including the pilot)
2. If the unit has been operating allow time for the components to cool.
3. Remove the lower panel door. (Fig. 61)
4. Release the two clamps securing the lower edge of the window frame assembly by pulling down on the handles. (Fig. 62)
5. Tilt the window frame assembly out slightly at the bottom, lift the window frame assembly up and away from the fireplace.
6. To replace the window frame assembly reverse the procedure.
28
Valve Ac­cess Panel
FP2377
Glass Cleaning
It is necessary to periodically clean glass. During start­up condensation, which is normal, forms on the inside of the glass. This condensation causes lint, dust and other airborne particles to cling to glass surface.
Also initial paint curing may deposit a slight film on the glass. It is therefore recommended the glass be cleaned two or three times with a non-ammonia based household cleaner and warm water (We recommend gas fireplace glass cleaner) within the first few weeks of operation.
After the initial cleaning process the glass should be cleaned two or three times during each operating season depending on the environment in the house.
Clean glass after first two weeks of operation.
Do not clean glass when hot.
Do not use abrasive cleaners.
Do not strike or slam the glass.
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Page 29
CDVZ Series Direct Vent Gas Fireplace
L
O
H
I
Turn
counterclockwise
to increase
flame height
Turn clockwise
to decrease
flame height
Logs
The 36CDVZ logs are shipped in place. If a log is broken, refer to the replacement parts list for a replace­ment. Figure 63 shows where the logs are secured to the fireplace.
Figure 63
Lava Rock
Ember Material and Lava Rock Placement
Separate the ember material into small pieces, roughly 1/2” in diameter and place on the front burner tube. Do NOT pack down, leave in fluffy, loose condition for most
realistic ember effect. (Fig. 62)
The lava rock provided with this fireplace must be placed on the firebox base around the burner assembly. (Fig. 63)
Under no circumstances should this lava
rock be placed on any part of the burner.
LG480
Ember Material
Flame & Temperature Adjustment
RN/RP & EN/EP Models
For units equipped with “HI/LO” valves the flame adjustment is accomplished by rotating the “HI/LO” adjustment knob located near the center of the gas control valve. (Figs. 64)
SIT 820 Valve
Fig. 64 Flame adjustment knob for SIT valve.
Yellow Flame
Figure 66
Flame Characteristics
It is important to periodically perform a visual check of the pilot and burner flames. Compare them to the illustrations. (Figs. 65 & 66)
If the flame patterns appear abnormal contact a qualified service provider for service and adjustment.
SIT RN/RP
FP1541
Fig. 65 Correct pilot flame appearance.
20014621
LG481
Red Glow, Yellow Tips
29
Page 30
CDVZ Series Direct Vent Gas Fireplace
*"/
"
"
"
P
I
L
O
T
O
F
F
O
F
F
5
4
3
2
1
O
F
F
P
i
l
o
t
3/8" - 1/2"
Lighting and Operating Instructions
FOR YOUR SAFETY READ BEFORE LIGHTING
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 heater has a pilot which must be lit manu-
ally. When lighting the pilot follow these instruc­tions exactly.
B. BEFORE LIGHTING smell all around the
heater area for gas. Be sure to smell 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 fireplace
Do not touch any electric switch
Do not use any phone in your building
Immediately call your gas supplier from a
neighbor’s phone.
Lighting Instructions
Follow the gas supplier’s 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. Applying force or any attempted repair may result in a fire or explosion.
D. Do not use this fireplace if any part has been under
water. Immediately call a qualified service techni­cian to inspect the heater and to replace any part of the control system and any gas control which has been under water.
1. STOP! Read the safety information above.
2. Turn off all electrical power to the fireplace.
3. For MN/MP/TN/TP appliances ONLY, go on to Step 4. For RN/RP appliances turn the ON/OFF switch to “OFF” position or set thermostat to lowest level.
4. Open control access panel.
5. Push in gas control knob slightly and turn clock­wise to “OFF”.
Euro SIT SIT NOVA
Honeywell
6. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety infor­mation above. If you do not smell gas, go to the next step.
7. Remove glass door before lighting pilot. (See Glass Frame Removal section).
8. Visibly locate pilot by the main burner.
9. Turn knob on gas control counterclockwise
to “PILOT”.
10. Push the control knob all the way in and hold. Immediately light the pilot by repeatedly depress­ing the piezo spark ignitor until a flame appears. Continue to hold the control knob in for about one (1) minute after the pilot is lit. Release knob and it will pop back up. Pilot should remain lit. If it goes out, repeat steps 5 through 8.
If knob does not pop up when released, stop and immediately call your service technician or gas supplier.
If after several tries, the pilot will not stay lit, turn the gas control knob to “OFF” and call your service technician or gas supplier.
11. Replace glass door.
12. Turn gas control knob to “ON” position.
13. For RN/RP appliances turn the ON/OFF switch to “ON” position or set thermostat to desired setting.
14. Turn on all electrical power to the fireplace.
1. Turn the ON/OFF switch to Off position or set the thermostat to lowest setting.
2. Turn off all electric power to the fireplace if service is to be performed.
30
To Turn Off Gas to Fireplace
3. Open control access panel.
4. Push in gas control knob slightly and turn clock­wise to “OFF”. Do not force.
5. Close control access panel.
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Page 31
CDVZ Series Direct Vent Gas Fireplace
HI
LO
Lighting and Operating Instructions
For Fireplaces equipped with SIT822 Gas Valve (EN or EP)
WARNING:If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury and loss of life.
FOR YOUR SAFETY READ THE FOLLOWING WARNINGS
BEFORE LIGHTING THE APPLIANCE
A. This fireplace is equipped with an ignition device
which automatically lights the pilot. DO NOT try to light the pilot by hand.
B. BEFORE OPERATING, smell all around the
appliance area for gas. Be sure to smell next to the floor because some gas is heavier than the air and will settle on the floor.
What to do if you smell gas
Do not try to light any appliance
Do not operate any electrical switch.
Do not use any phone in your building.
Immediately call your gas supplier from a
neighbor’s phone.
Lighting Instructions
1. STOP! Read the safety information above before
continuing.
2. Turn off all electrical power to the appliance.
3. This appliance is equipped with an ignition device which automatically lights the pilot. DO NOT try to light the pilot by hand.
4. Access the gas control by lowering the lower access door (louvre assembly).
Follow the gas suppliers instructions.
If you cannot contact 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 attempting 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 replace any part of the control system and any gas control that has been under water.
5. Turn the remote switch, if used, OFF. Turn the wireless remote, if used, OFF.
6. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas STOP. Follow instructions B in the safety warnings above. If you do not smell gas go onto the next step.
7. Close the access door.
8. Turn ON all electrical power to the appliance.
9. Turn remote switch or wireless remote to “ON”.
10. If the appliance will not operate, follow the instructions TURNING OFF THE GAS TO THE APPLIANCE and call your service technician or gas supplier.
Turning Off the Gas to the Appliance
1. Turn the remote switch to the “OFF” position.
2. Turn OFF all electrical power to the fireplace if service is required.
3 Open the lower access panel.
4. Turn the shut-off valve on the flexible gas line to the “OFF” position.
20014621
1/2” Gas Supply
1/2” NPT x 1/2” Flare Shut-Off Valve
Valve in the on position
3/8” Flex Line (From Valve)
FP297A
31
Page 32
CDVZ Series Direct Vent Gas Fireplace
Troubleshooting the Gas Control System
SIT NOVA 820 MILLIVOLT VALVE
NOTE: Before trouble shooting the gas control system, be sure external gas shut off is in the “On” position.
WARNING: BEFORE DOING ANY GAS CONTROL SERVICE WORK, REMOVE GLASS FRONT.
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
1. Spark ignitor will not light A. Defective or misaligned Using a match, light pilot. If pilot lights, turn off electrode at pilot. pilot and push the red button again. If pilot will not light - check gap at electrode and pilot-should be 1/8” to have a strong spark.
B. Defective ignitor (Push Button) Push Piezo Ignitor Button. Check for spark at electrode and pilot. If no spark to pilot, and elec- trode wire is properly connected, replace ignitor.
2. Pilot will not stay lit after A. Defective pilot generator Check pilot flame. Must impinge on thermo- carefully following lighting (thermocouple), remote wall couple/thermopile. Note: this pilot burner assem­ instructions. switch. bly utilizes both-a thermocouple and a thermopile. The thermocouple operates the main valve operation (On and Off). Clean and or adjust pilot for maximum flame impingement on thermopile and thermocouple.
B. Defective automatic valve Turn valve knob to “Pilot”. Maintain flow to pilot; millivolt meter should read greater than 10 mV. If the reading is okay and the pilot does not stay on, replace the gas valve. Note: An interrupter block (not supplied) must be used to conduct this test.
3. Pilot burning, no gas to A. Wall switch or wires defective Check wall switch and wires for proper connec- main burner tions. Jumper wire across terminals at wall switch, if burner comes on, replace defective wall switch. If okay, jumper wires across wall switch wires at valve, if burner comes on, wires are faulty or connections are bad.
B. Thermopile may not be 1. Be sure wire connections from thermopile at generating sufficient gas valve terminals are tight and thermopile is fully millivoltage. inserted into pilot bracket.
2. One of the wall switch wires may be grounded. Remove wall switch wires from valve terminals if pilot now stays lit, trace wall switch wiring for ground. May be grounded to fireplace or gas supply.
3. Check thermopile with millivolt meter. Take reading at thermopile terminals of gas valve. Should read 250-300 millivolts (minimum 150) while holding valve knob depressed in pilot position and wall switch “Off”. Replace faulty thermopile if reading is below specified minimum.
C. Plugged burner orifice. Check burner orifices for debris and remove.
D. Defective automatic valve Turn valve knob to “On”, place wall switch to “On” operator. millivolt meter should read greater than 100 mV. If the reading is okay and the burner does not come on, replace the gas valve.
4. Frequent pilot outage A. Pilot flame may be too low Clean and/or adjust pilot flame for maximum flame problem. or blowing (high) causing the impingement on thermopile and thermocouple. pilot safety to drop out.
B. Possible blockage of the vent Check the vent terminal for blockage (recycling the terminal. flue gases)
32
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Page 33
CDVZ Series Direct Vent Gas Fireplace
Fuel Conversion Instructions
The conversion of this appliance from one gas to another must be carried out by an authorized service provider.
The procedure for converting from one gas to another is the same regardless of the initial gas used. The only variation is in the orifice sizes and component part numbers. Your authorized service provider will ensure the correct parts are used.
1. Disconnect power to the unit and shut off the gas sup­ply.
2. Remove window frame assembly.
3. Remove the lava rock and ember material. (Fig. 67)
Remove Screws
Pilot Assembly
Burner Tube
Fig. 69 Remove burner tube and rear log support.
Orifice
FC111
Fig. 70 Remove orifice from brass elbow.
Remove Screws
Rear Log Support
Brass Elbow
FC114
Ember Material
Fig. 67 Remove lava rock and ember material.
Lava Rock
Front Log
CO134
4. Push the log support towards the back of the fireplace and lift out the front log mounting assembly. (Fig. 68)
5. Remove the two (2) screws securing the rear log to the back of the firebox. Remove the three (3) screws securing the rear log support to the back of the fire­box. (Fig. 69)
Remove Screws
Log Support & Front Log
Fig. 68 Remove rear log and log support and front log.
CO135
6. Remove the two (2) screws securing the burner tube to the burner pan. (Fig. 69)
7. Remove the orifice from the brass elbow. Use a 9/16” open end wrench to hold the elbow while using the 1/2” wrench to remove the orifice. (Fig. 70)
Air Shutter Adjustment Screw
LP: Fully Open NG: 1/8” Open
FC112
Fig. 71 Adjust air shutter.
8. Install the new conversion orifice.
9. Loosen the adjusting screw that holds the air shutter to the burner tube. Adjust air shutter to:
LP - fully open; NG - 1/8” open. (Fig. 71)
10. Install the burner tube and secure with the two (2) screws removed earlier.
11. Burner orifice installation complete.
Pilot Conversion NOTE: It is not necessary to remove the pilot tube for
conversion.
1. Remove pilot hood by lifting up. (Fig. 72)
2. Remove pilot orifice with the appropriate size Allen wrench. (Fig. 73)
3. Install conversion pilot orifice.
4. Reinstall pilot hood. Be sure to align pilot hood with index tab.
Pilot conversion installation is complete.
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CDVZ Series Direct Vent Gas Fireplace
D
E
F
O
F
F
P
I
L
O
T
O
A
B
C
O
F
F
P
I
L
O
T
O
Pilot Hood
Pilot Bracket
Fig. 72 Remove pilot hood.
Index Tab
Allen Wrench
CO105a
3. Install the enclosed identification label (F) to the valve body where it can be easily seen.
Testing for Leaks
1. Apply gas to the system and light the pilot.
2. With a soapy solution check for leaks around the
pilot assembly where the tube enters the pilot assembly. Tighten fitting if necessary.
3. Light the main burner and check for leaks around
the new pressure regulator assembly. Tighten screws if necessary.
4. With the main burner “ON” rotate the Hi/Lo knob
and verify the proper burner operation.
Pilot Flame Adjustment
Typically, the top 3/8” or 1/2” of the thermopile should be engulfed in the pilot flame. (Fig. 75)
To adjust pilot burner:
1. Remove pilot adjustment cap located on valve.
2. Adjust pilot screw to provide properly sized flame.
3. Replace pilot adjustment cap.
Snap Ring
CO106a
Fig. 73 Remove pilot orifice and replace with conversion orifice.
Valve Regulator Conversion SIT 820 NOVA Gas Control Valve (Fig. 74)
1. Using a Torx T20 or slotted screwdriver, remove and save the three pressure regulator mounting screws (A), pressure regulator tower (B) and diaphragm (C).
2. Ensure the rubber gasket (D) is properly positioned and install the new HI/LO pressure regulator to the valve using the new screws (E) supplied with the kit. Tighten screws securely. (Reference torque - 25 in.LB)
3/8” - 1/2” (10 - 13 mm)
FP1541
Fig. 75 Correct pilot flame appearance.
Reassembly
1. Turn the fireplace off.
2. Reverse Steps 3-6 in ‘Burner Orifice Conversion’ to reassemble fireplace.
3. Reinstall glass door.
4. Conversion of the fireplace is complete.
Fig. 74 Nova SIT820 Gas Valve.
34
FC107/108
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CDVZ Series Direct Vent Gas Fireplace
Maintenance
Burner and Burner Compartment
It is important to keep the burner and the burner compartment clean. At least once per year the logs and lava rock/ember material should be removed and the burner compartment vacuumed and wiped out. Remove and refit the logs as per the instructions in this manual.
Always handle the logs with care as they are fragile and may also be hot if the fireplace has been in use.
FK12 Fan Assembly
The fan unit requires periodic cleaning. At least once per month in the operating season open the lower louvre panels and wipe or vacuum the area around the fan to remove any build up of dust or lint.
Cleaning the Standing
Pilot Control System
The burner and control system consist of:
burner gas orifice
pilot assembly thermopile
millivolt gas valve
Most of these components may require only an occasional checkup and cleaning and some may require adjustment. If repair is necessary, it should
be performed by a qualified technician.
1. Turn off pilot light at gas valve.
2. Allow fireplace to cool if it has been operating.
3. Remove window frame assembly. (Refer to Window Frame Assembly Removal section.)
4. Vacuum burner compartment especially around orifice primary air openings.
5. Visually inspect pilot. Brush or blow away any dust or lint accumulation.
6. Ignite pilot - Refer to Lighting Instructions.
7. Reinstall window frame assembly.
To obtain proper operation, it is imperative that the pilot and burner’s flame characteristics are steady, not lifting or floating.
Typically, the top 3/8” to 1/2” of the thermopile should be engulfed in the pilot flame. (Refer to Page 35, Figure
75)
To adjust pilot burner: (by qualified service technician)
1. Remove pilot adjustment cap
2. Adjust pilot screw to provide properly sized flame.
3. Replace pilot adjustment cap.
The primary air shutter is set at factory and should only be adjusted, if necessary, by a qualified service technician.
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CDVZ Series Direct Vent Gas Fireplace
16
14a,b
13
20
2
6a,b
7
10
11
12
15
17
21
22
23
3
8
19
1a
1b
18
26
25
MHSC reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time, without notice.
CDVZ
Ref. Description 36CDVZ 1a. Log Rear Assy 20012251
1b. Log Middle Assy 20012108
2. Hood 20010312
3. Burner Tube 20010333
4. Orifice Burner - Natural (not shown) 72386 5a. Orifice Pilot - Natural (not shown) 10002268 5b. Orifice Pilot - Propane (not shown) 10002269 6a. PIlot Assy SIT - RN 37D0018 6b. Pilot Assy SIT - RP 37D0019
7. Pilot Tubing w/Fittings SIT 26D0665
8. Pilot Hood 10002385
9. Manifold Tubing (not shown) 20010162
10. Thermocouple - RN/RP 24D0808
11. Thermopile - RN/RP 7533113
12. Electrode Ignitor w/Cable RN/RP 10001297
13. Ignitor Piezo SIT 820 Valve 52464 14a. Valve SIT 820 - RN 52677 14b. Valve SIT 820 - RP 52678
36
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CDVZ Series Direct Vent Gas Fireplace
CDVZ (continued)
Ref. Description 36CDVZ
15. Flexible Gas Line w/ON/Off Shut-Off Valve 20002500
16. Fan Assy (FK12 Option) FK12
17. Electrical Cord (6 ft.) 51865
18. Door Assy 20010207
19. Frame Window 20010320
20. Clamp Frame Window 10000949
21. Clean Face Panel 20014132
22. Valve Access Panel 20014134
23. Grommet 20010348
24. Wire/Bushing Assy (not shown) 20010346
25. Lava Rock 20000376
26. Ember Material 51915
Fuel Conversion Kits
36CDVZ NG to LP Kit # 20010507 36CDVZ LP to NG Kit # 20014425
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CDVZ Series Direct Vent Gas Fireplace
584E
584F
VERTICAL VENTING
Description Model Number Vertical Vent Termination Kits Vertical Vent Termination w/ Storm Collar 7TDVSKV
(flashing NOT included)
Vertical Vent Termination w/ Storm Collar - 8 pack 7TDVSKV/8 (flashing NOT included)
Vertical Vent Termination w/ 1/12 - 6/12 Flashing, Storm 7TDVSKVA* Collar and Ceiling Support Kit
Vertical Vent Termination w/ 6/12 - 12/12 Flashing, 7TDVSKVB* Storm Collar and Ceiling Support Kit
Vertical Vent Termination w/ Flat Flashing, Storm Collar 7TDVSKVF* and Ceiling Support Kit
Twist Lock Pipe 12" - 18" Adjustable Vent Length 7TDVP1218
35" - 64" Adjustable Vent Length 7TDVP3564
8" Vent Pipe - 4 pack 7TDVP8/4
12" Vent Pipe - 4 pack 7TDVP12/4
24" Vent Pipe - 4 pack 7TDVP24/4
36" Vent Pipe 7TDVP36
36" Vent Pipe - 30 pack 7TDVP36/30
48" Vent Pipe 7TDVP48
48" Vent Pipe - 30 pack 7TDVP48/30
Twist Lock Elbows 45° Elbow for Vertical/Horizontal Offset 7TDV45
45° Elbow for Vertical Offsets - 8 pack 7TDV45/8
90° Elbow for Vertical/Horizontal Offset 7TDV90
90° Elbow for Vertical/Horizontal Offset - 8 pack 7TDV90/8
Shields and Supports 1" Firestop 7DV1FS
1" Attic Insulation Shield 7DV1AIS
Combination Horizontal Offset/Roof Support 7DVCS
38
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CDVZ Series Direct Vent Gas Fireplace
584E
584F
HORIZONTAL VENTING
Description Model Number Horizontal Vent Termination Kits Rear Vent Hot Touch Termination Kit w/ 10" to 16" 7TBRHTK
Adjustable Termination Pipe, Firestop, and Hot Touch Termination w/ Siding Shield
Up and Out Side Wall Termination Kit w/ 10" to 16" 7TDVSCTK Adjustable Termination Pipe, 90° Elbow, Firestop, and Cool Touch Termination w/ Siding Shield
Rear Vent Cool Touch Termination w/ Siding Shield for 7TRVCT/8 Straight-out Applications and Firestop - 8 pack
Rear Vent Hot Touch Termination w/ Siding Shield for 7TRVHT/8 Straight-out Applications and Firestop - 8 pack
Termination Guard for 7" T.L. Rear Vent Hot Touch 7TRVTG Terminations 97TRVT/7TSVKT)
Snorkel Termination 7TDVSNORK
7" T.L. DVRTSB Termination Screen Guard 7TBSG
Vent kit for 45° installations or 13” - 32” Rear Vent 7TCD45KT
Twist Lock Pipe 10" - 16" Adjustable Termination Pipe - 4 pack 7TDVPA/4
12" - 18" Adjustable Vent Length 7TDVP1218
35" - 64" Adjustable Vent Length 7TDVP3564
8" Vent Pipe - 4 pack 7TDVP8/4
12" Vent Pipe - 4 pack 7TDVP12/4
24" Vent Pipe - 4 pack 7TDVP24/4
36" Vent Pipe 7TDVP36
36" Vent Pipe - 30 pack 7TDVP36/30
48" Vent Pipe 7TDVP48
48" Vent Pipe - 30 pack 7TDVP48/30
Twist Lock Elbows 45° Elbow for Vertical/Horizontal Offset 7TDV45
45° Elbow for Vertical Offsets - 8 pack 7TDV45/8
90° Elbow for Vertical/Horizontal Offset 7TDV90
90° Elbow for Vertical/Horizontal Offset - 8 pack 7TDV90/8
90° Elbow (unitized) for Rear Vent to Vertical Vent 7TCDV90
Shields and Supports 1" Firestop 7DV1FS
3" Firestop 7DV3FS
1" Attic Insulation Shield 7DV1AIS
Combination Horizontal Offset/Roof Support 7DVCS
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CDVZ Series Direct Vent Gas Fireplace
Optional Accessories Available
Fan Kits
FK12
This auxiliary fan system increases the efficiency of the circulation of the heating air.
The FK12 Fan Assembly is a fixed speed fan system and does not allow for variable speed control.
Specifications
115 Volts / 60 Hz / 56 Watts.
Maintenance
The fan itself does not require regular maintenance, however periodic cleaning of the fan and the surrounding area is required.
Check the area under the control door (lower louvre assembly) and in front of the fan and wipe or vacuum this area at least once a month during the operating season.
Installation
The fan assembly is supplied fully wired eliminating the need for a licensed electrician to carry out the installation.
1. Remove the lower Louvre assembly. Move the fan & bracket assembly around the gas valve and lines to locate the unit against the back wall of the appliance, resting on the base.
2. With the protective cover removed from the self­adhesive ‘Velcro’ strips apply mild pressure to the fan & bracket unit to secure the strips to the metal panels. No further securing is required.
3. Power to the fan can be supplied by plugging the supplied lead into a conveniently located wall socket or by using the receptacle in the bottom of the unit.
Fan
Receptacle
Wiring Instructions
The fireplace, when installed, must be electrically connected and grounded in accordance with local codes or, in the absence of local codes, with the current CSA C22.1 Canadian Electric Code.
For USA installations follow the local codes and the national electrical code ANSI/NFPA No. 70.
Should this fan require servicing or repair the power supply must be disconnected.
Any electrical rewiring of this fan must be done by a licensed electrician.
Remote Controls
Optional remote control units are available to control different functions of the appliances.
Model Functions Controlled RCB,RCM, On/Off Remote RCBE,WMTD RCST,RCSTE,RCT, ON/OFF Thermostat Remote WWTD,RCSTEB, RCSITE, RCSIT WT Wall Thermostat MVWS Wall Switch
Optional Trim
The Perimeter trim is designed to enhance the look of the fireplace.
Model Description 36CDVTK Perimeter Trim Black
FP1602
Fig. 76 FK12 fan placement.
40
Gas Lines
Valve
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CDVZ Series Direct Vent Gas Fireplace
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CDVZ Series Direct Vent Gas Fireplace
42
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CDVZ Series Direct Vent Gas Fireplace
LIMITED LIFETIME WARRANTY
Lifetime Warranty
The following components are warranted for life to the original owner, subject to proof of purchase: Firebox, Combus­tion Chamber, Heat Exchanger, Grate and Stainless Steel Burners.
Five Year Warranty
The following components are warranted for five (5) years to the original owner, subject to proof of purchase: Ceramic Fiber Logs.
Basic Warranty
MHSC warrants the components and materials in your gas appliance to be free from manufacturing and material defects for a period of two (2) years from date of installation. After installation, if any of the components manufactured by MHSC in the appliance are found to be defective in materials or workmanship, MHSC will, at its option, replace or repair the defective components at no charge to the original owner. MHSC will also pay for reasonable labor costs incurred in replacing or repairing such components for a period of two (2) years from date of installation. Any products presented for warranty repair must be accompanied by a dated proof of purchase.
This Limited Lifetime Warranty will be void if the appliance is not installed by a qualified installer in accordance with the installation instructions. The Limited Lifetime Warranty will also be void if the appliance is not operated and main­tained according to the operating instructions supplied with the appliance, and does not extend to (1) firebox/burner assembly damage by accident, neglect, misuse, abuse, alterations, negligence of others, including the installation thereof by unqualified installer, (2) the costs of removal, reinstallation or transportation of defective parts on the appli­ance, or (3) incidental or consequential damage. All service work must be performed by an authorized service repre­sentative.
This warranty is expressly in lieu of other warranties, express or implied, including the warranty of merchantability of fitness for purpose and of all other obligations or liabilities. MHSC does not assume for it any other obligations or liabilities in connection with sale or use of the appliance. In states that do not allow limitations on how long an implied warranty lasts, or do not allow exclusion of indirect damage, those limitations of exclusions may not apply to you. You may also have additional rights not covered in the Limited Lifetime Warranty.
MHSC reserves the right to investigate any and all claims against the Limited Lifetime Warranty and decide upon method of settlement.
For information about this warranty, contact:
Technical Services MHSC 149 Cleveland Drive Paris. KY 40361
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Efficiency Ratings
Based on CSA P.4.1-09
Model EnerGuide Ratings Steady State (%) D.O.E. Fireplace Efficiency (%) Fan-OFF Fan-ON (AFUE%)
36CDVZRRN 66.9 76 76.5 63 36CDVZRRP 66.9 77 78 63 36CDVZTRN 57 76 76.5 63 36CDVZTRP 57 77 78 63
MHSC
149 Cleveland Drive • Paris, Kentucky 40361
www.mhsc.com
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