Lennox MPD-45, MPD-33, MPD-40, MPD-35 User Manual

						INSTALLATION
						INSTRUCTIONS
								DIRECT VENT
							MPD-33/35/40/45 SERIES
This appliance may be installed in an aftermarket perma-						VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELS
nently located, manufactured home (USA only) or mobile						P/N 850,014M REV. R 06/2008
home, where not prohibited by local codes. This appliance
is only for use with the type of gas indicated on the rating							MODELS
plate. This appliance is not convertible for use with other
gases, unless a certified kit is used.
							Millivolt Models		Electronic Models
In the Commonwealth of Massachusetts:							MPDT-3328CNM	MPD-4035CNM	MPDT-3328CNE	MPD-4035CNE
• Installation must be performed by a licensed plumber or							MPDT-3328CPM	MPD-4035CNM-B	MPDT-3328CPE	MPD-4035CPE
							MPDR-3328CNM	MPD-4035CPM	MPDR-3328CNE MPD-4035CNE-B
gas fitter.
							MPDR-3328CPM	MPD-4540CNM	MPDR-3328CPE	MPD-4540CNE
See Table of Contents for location of additional							MPD-3530CNM	MPD-4540CNM-B	MPD-3530CNE	MPD-4540CPE
Commonwealth of Massachusetts requirements.						MPD-3530CNM-B		MPD-4540CPM	MPD-3530CPE MPD4540CNE-B
							MPD-3530CPM		MPD-3530CNE-B
	WARNING:IFTHEINFORMATIONINTHISMANUAL
					INSTALLER: Leave this manual with the appliance.
	IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
					CONSUMER: Retain this manual for future reference.
	SION MAY RESULT CAUSING PROPERTY DAM-
	AGE, PERSONAL INJURY OR LOSS OF LIFE.
						AVERTISSEMENT: ASSUREZ-VOUS DE BIEN SUIVRE
	FOR YOUR SAFETY: Do not store or use gasoline
						LESINSTRUCTIONSDONNÉDANSCETTENOTICEPOUR
	or other flammable vapors or liquids in the vicin-					RÉDUIRE AU MINIMUM LE RISQUE D'INCENDIE OU
	ity of this or any other appliance.					POUR ÉVITER TOUT DOMMAGE MATÉRIEL, TOUTE
	FOR YOUR SAFETY: What to do if you smell gas:					BLESSURE OU LA MORT.
						POUR VOTRE SÉCURITÉ: Ne pas entreposer ni utiliser
	•	DO NOT light any appliance.
						d'essence ni d'autre vapeurs ou liquides inflammables
	•	DO NOT touch any electrical switches.
						dans le voisinage de cet appareil ou de tout autre
	•	DO NOT use any phone in your building.
						appareil.
	• Immediately call your gas supplier from a
		neighbor’s phone. Follow your gas suppliers				POUR VOTRE SÉCURITÉ: Que faire si vous sentez une
		instructions.				odeur de gaz:
	• If your gas supplier cannot be reached, call the
		fire department.				• Ne pas tenter d'allumer d'appareil.
	Installation and service must be performed by a					• Ne touchez à aucun interrupteur. Ne pas vous servir
							des téléphones se trouvant dans le batiment où
	qualified installer, service agency or the gas						vous vous trouvez.
	supplier.					• Evacuez la piéce, le bâtiment ou la zone.

•Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions du

		US		OTL Report No. 116-F-13-4		fournisseur.
						• Si vous ne pouvez rejoindre le fournisseur de gaz,
	A French manual is available upon request. Order Form Number					appelez le service dos incendies.
	850,014CF.					L'installation et service doit être exécuté par un qualifié
	Ce manuel d’installation est disponible en francais, simplement
						installeur, agence de service ou le fournisseur de gaz.
	en faire la demande. Numéro de la pièce 850,014CF.						1
				NOTE: DIAGRAMS &		ILLUSTRATIONS NOT TO SCALE.

TABLE OF CONTENTS
Packaging ........................................		page	2
Introduction .....................................		page	2
General Information .........................		page	2
Location	..........................................	page	4
Appliance and Vent Clearances .......		page	4
Vent Termination Clearances ...........		page	5
Typical Installation Sequence ..........		page	5
Detailed Installation Steps ...............		page	6
Step 1.	Framing .............................	page	6
Step 2. Routing Gas Line ...............		page	6
Fireplace Specifications ...................		page	9
Step 3. Install the Venting System . page			9
Requirements for Commonwealth
of Massachusetts ..........................		page	9
Vertical Termination Systems ..........		page	11
Vent Section Length Chart ...............		page	11
Vertical Vent Tables and Figures ......		page	11
Horizontal Termination System ........		page	16
Horizontal Vent Tables and Figures . page			18
Venting Using Flexible Vent Pipe .....		page	21
Step 4.	Field Wiring .......................	page	22
Step 5. Optional Blower Kit Wiring		page	22
Step 6. Connecting Gas Line ..........		page	23
Step 7.	Installing Logs ...................	page	24
Step 8.	Checking Unit Operation .....	page	24
Step 9. Installing Glass Door .........		page	24
Step 10. Burner Adjustments ...........		page	25
Step 11. Hood Installation ...............		page	25
Finishing Requirements ...................		page	25
Cold Climate Insulation ....................		page	26
Installation Accessories ...................		page	27
Gas Conversion Kits ..................		page 29

This installation manual will help you obtain a safe, efficient, dependable installation for your appliance and vent system.

Please read and understand these instructions before beginning your installation.

2	NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

PACKAGING

The assembled vented gas fireplace heater is packaged with:

1 - one log set located in firebox area.

2 - one envelope containing the literature package which consists of the homeowner's manual, installation instructions, log set supplement and warranty; envelope is located in the control area.

3 - one vent restrictor to be applied as shown on page 10; restrictor is taped to the envelope.

4 - one hood located behind the top panel.

5 - one bag of decorative volcanic stone located in the control area.

6 - one bag of glowing embers located in the control area.

7 - one bag of vermiculite located in control area.

INTRODUCTION

These fireplaces are designed, tested and listed for operation and installation with, and only with, Secure Vent™ Direct Vent System Components, Secure Flex™ Flexible Vent Components manufactured by Security Chimneys International and Z-Flex™ Model GA Venting Systems, listed to UL1777 and ULCS635 manufactured by Flexmaster Canada Limited. These approved vent system components are labeled for identification. DO NOT use any other manufacturer's vent components with these appliances.

Millivolt appliances are designed to operate on natural or propane gas. A millivolt gas control valve with piezo ignition system provides safe, efficient operation. External electrical power is required to operate the optional blower if installed in these units.

Electronic appliances are designed to operate on natural or propane gas. An electronic intermittent pilot ignition system provides safe, efficient operation. External electrical power is required to operate these units.

These appliances comply with National Safety Standards and are tested and listed by OmniTest Laboratories (Report No. 116-F-13-4) to ANSI Z21.88 (in Canada, CSA-2.33), and CAN/ CGA-2.17-M91 in both USA and Canada, as vented gas fireplace heaters.

Both millivolt and electronic versions of these appliances are listed by Omni-Test Laboratories for installation in bedrooms and mobile homes.

Installation must conform to local codes. In the absence of local codes, installation must comply with the current National Fuel Gas Code, ANSI Z223.1. (In Canada, the current CAN-1

B149 installation code.)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Electrical wiring must comply with the National Electrical Code ANSI/ NFPA 70 - (latest edition). (In Canada, the current CSA C22-1 Canadian Electrical Code.)

DO NOT ATTEMPT TO ALTER OR MODIFY THE CONSTRUCTION OF THE APPLIANCE OR ITS COMPONENTS. ANY MODIFICATION OR ALTERATION MAY VOID THE WARRANTY, CERTIFICATION AND LISTINGS OF THIS UNIT.

GENERAL INFORMATION

Note: Installation and repair should be performed by a qualified service person. The appliance should be inspected annually by a qualified professional service technician. More frequent inspections and cleanings may be required due to excessive lint from carpeting, bedding material, etc. It is imperative that the control compartment, burners and circulating air passage ways of the appliance be kept clean.

S'assurer que le brùleur et le compartiment des commandes sont propres. Voir les instructions d'installation et d'utilisation qui accompagnent l'appareil.

Provide adequate clearances around air openings and adequate accessibility clearance for service and proper operation. Never obstruct the front openings of the appliance.

These appliances are designed to operate on natural or propane gas only.

TYPICAL INSTALLATION

Figure 1

Millivolt Models -

Millivolt models come standard with the manu- ally-modulated gas valve; flame appearance and heat output can be controlled at the gas valve.

Input of millivolt models is shown in the following table:

Millivolt Models with

Manually-Modulated Gas Valve

Natural Gas

	Model Series	Input rate (BTU/H)
	MPDT-3328	11,700 to 17,500
	MPDR-3328
	MPD-3530	12,800 to 20,000
	MPD-4035	18,500 to 27,000
	MPD-4540	20,500 to 29,000

Millivolt Models with

Manually-Modulated Gas Valve

Propane Gas

	Model Series	Input rate (BTU/H)
	MPDT-3328	14,000 to 17,500
	MPDR-3328
	MPD-3530	15,200 to 20,000
	MPD-4035	21,500 to 27,000
	MPD-4540	22,500 to 29,000

Electronic Models -

Electronic models have a fixed rate gas valve. Input of electronic models is shown in the following table:

Electronic Models with Fixed-Rate Gas Valve

Natural and Propane Gas

	Model Series	Input rate (BTU/H)
	MPDT-3328	17,500
	MPDR-3328
	MPD-3530	20,000
	MPD-4035	27,000
	MPD-4540	29,000

All Models -

Maximum manifold pressure is 3.5 in. w.c. (0.87 kPa) for natural gas and 10 in. w.c. (2.49 kPa) for LP/Propane gas.

Installations at Altitudes of 0 to 4500 ft.- Units are tested and approved for elevations of 0 to 4500 feet (0 to 1372 meters).

Installations at Altitudes above 4500 ft.- For elevations above 4500 feet (1372 meters), install the unit according to the regulations of the local authorities having jurisdiction and, in the USA, the latest edition of the National Fuel Gas Code (ANSI Z223.1) or, in Canada, the latest edition of the CAN1-B149.1 and .2 codes.

Table 1 shows the units' gas orifice size for the elevations indicated.

The millivolt appliances are manually controlled and feature a spark ignitor (piezo) that allows the appliance's pilot gas to be lit without the use of matches or batteries. This system provides continued service in the event of a power outage.

	Model	Orifice size		Elevation
				Feet
	Series
				(meters)
		Nat.	Prop.
	MPDT-3328	#45	0.048 inch
	MPDR-3328
				0-4500
	MPD-3530	#44	#55
				(0-1370)
	MPD-4035	#37	0.062 inch
	MPD-4540	#36	#52

Table 1

Do not use these appliances if any part has been under water. Immediately call a qualified, professional service technician to inspect the appliance and to replace any parts of the control system and any gas control which have been under water.

Ne pas se servir de cet appareil s'il a été plongé dans l'eau, complètement ou en partie. Appeler un technicien qualifié pour inspecter l'appareil et remplacer toute partie du système de contrôle et toute commande qui ont été plongés dans l'eau.

This appliance may be installed in an aftermarket permanently located, manufactured home (USA only) 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.

Cet appareil peut être installé dans un maison préfabriquée (É.-U. seulement) ou mobile déjà installée à demeure si les réglements locaux le permettent.

Cet appareil doit être utilisé uniquement avec les types de gaz indiqués sur la plaque signalétique. Ne pas l'utiliser avec d'autres gaz sauf si un kit de conversion certifié est installé.

Test gage connections are provided on the front of the millivolt gas control valve (identified IN for the inlet and OUT for the manifold side). A 1/8" NPT test gage connection is provided at the inlet and outlet side of the electronic gas control valve.

Minimum inlet gas pressure to these appliances is 5.0 inches water column (1.24 kPa) for natural gas and 11 inches water column (2.74 kPa) for propane for the purpose of input adjustment.

Maximum inlet gas supply pressure to these appliances is 10.5 inches water column (2.61 kPa) for natural gas and 13.0 inches water column (3.23 kPa) for propane.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

These appliances must be isolated from the gas supply piping system (by closing their individual manual shut-off valve) during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).

Theseappliancesandtheirindividualshut-offvalves must be disconnected from the gas supply piping system during any pressure testing of that system at pressures in excess of 1/2 psig (3.5 kPa).

These appliances must not be connected to a chimney or flue serving a separate solid fuel burning appliance.

These heater rated appliances are intended for use as supplemental heaters only.

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning are similar to the flu with headaches, dizziness and/or nausea. If you have these signs, obtain fresh air immediately. Turn off the gas supply to the appliance and have it serviced by a qualified professional, as it may not be operating correctly.

WARNING: FAILURE TO COMPLY WITH THE INSTALLATION AND OPERATING INSTRUCTIONS PROVIDED IN THIS DOCUMENT WILL RESULT IN AN IMPROPERLY INSTALLED AND OPERATING APPLIANCE, VOIDING ITS WARRANTY. ANY CHANGE TO THIS APPLIANCE AND/ OR ITS OPERATING CONTROLS IS DANGEROUS. IMPROPER INSTALLATION OR USE OF THIS APPLIANCE CAN CAUSE SERIOUS INJURY OR DEATH FROM FIRE, BURNS, EXPLOSION OR CARBON MONOXIDE POISONING.

WARNING: CHILDREN AND ADULTS SHOULD BE ALERTED TO THE HAZARDS OF HIGH SURFACE TEMPERATURES. USE CAUTION AROUND THE APPLIANCE TO AVOID BURNS OR CLOTHING IGNITION. YOUNG CHILDREN SHOULD BE CAREFULLY SUPERVISED WHEN THEY ARE IN THE SAME ROOM AS THE APPLIANCE.

WARNING: DO NOT PLACE CLOTHING OR OTHER FLAMMABLE MATERIALS ON OR NEAR THIS APPLIANCE.

AVERTISSEMENT: SURVEILLER LES ENFANTS. GARDER LES VÊTEMENTS, LES MEUBLES, L'ESSENCE OU AUTRES LIQUIDES À VAPEUR INFLAMMABLES À COTE DE L'APPAREIL.

3

TOP		VENTREAR	APPLICATION		REAR
	VENT				APPLICATION
APPLICATION						VENT
TOP VENT			TOPVENT	APPLICATION	TOPVENT	APPLICATION		HORIZONTAL VENT	HORIZONTAL VENT	HORIZONTAL VENT	VERTICAL VENT
APPLICATION
					VENTTOP	APPLICATION	VERTICAL VENT	(Rear Vent Application	(Rear Vent Application	(Top Vent	(Top Vent
							(Rear Vent
								without a chase)	With a chase)	Application)	Application)
							Application)
	RECESSED
	INSTALLATION
				TOP VENT			Typical Locations
				APPLICATION

Figure 2

LOCATION

In selecting the location, the aesthetic and

Model No.

Shelf Height inches (mm)

functional use of the appliance are primary

Top Vent - with One 90 Degree Elbow

Rear Vent - Straight Out the Back

concerns. However, vent system routing to the

Secure Vent

Secure Flex

Secure Vent

Secure Flex

exterior and access to the fuel supply are also

MPDT-3328

44 1/2 (1130)

46 1/4 (1175)

N/A

N/A

important. Due to high temperatures the

appliance should be located out of traffic

MPDR-3328

N/A

N/A

33 1/4 (845)

33 1/4 (845)

and away from furniture and draperies.

MPD-3530

46 1/2 (1181)

48 1/4 (1226)

35 1/4 (895)

35 1/4 (895)

Consideration should be given to traffic ways,

MPD-4035

51 1/2 (1308)

53 1/4 (1353)

40 1/4 (1022)

40 1/4 (1022)

furniture, draperies, etc., due to elevated sur-

MPD-4540

face temperatures (Figure 2 ). The location

should also be free of electrical, plumbing or

Do not insulate the

other heating/air conditioning ducting.

Do not insulate the

space between the

These direct vent appliances are uniquely suited

space between the

appliance and the

appliance and the

area above it.

for installations requiring a utility shelf posi-

area above it.

tioned directly above the fireplace. Utility shelves

like these are commonly used for locating tele-

vision sets and decorative plants.

Shelf Height

To provide for the lowest possible shelf surface

Shelf Height

(see table)

(see table)

use the alternate rear vent outlet with attached

venting routed in a way to minimize obstruc-

tions to the use of the space above the appli-

Shelf Above Fireplace With Top Venting

Shelf Above Fireplace With Rear Venting

ance. Do not insulate the space between the

appliance and the area above it. See Figure 3.

Figure 3

The minimum height from the base of the appli-

ance to the underside of combustible materials

used to construct a utility shelf in this fashion is

1/2 in. (13 mm)

shown in the table in Figure 3.

BACK

0 in. (0 mm) spacers

The appliance should be mounted on a fully

1/2 in. (13 mm)**

*Note: 3 in. (75 mm) above any horizontal/

supported base extending the full width and

SIDES

depth of the unit. The appliance may be located

0 in. (0 mm) spacers

inclined vent component.

on or near conventional construction materi-

TOP SPACERS

0 in. (0 mm)

**Note: See page 5, step 1 for clearance

als. However, if installed on combustible mate-

rials, such as carpeting, vinyl tile, etc., a metal

FLOOR

0 in. (0 mm)

requirements to the nailing flange located

or wood barrier covering the entire bottom

at each side of the unit and any screw

From Bottom

surface must be used.

64 in. (1626 mm)

heads adjacent to it.

APPLIANCE AND VENT CLEARANCES

of Unit to

Ceiling

The appliance is approved with zero clearance

VENT

1 in. (25.4 mm)*

to combustible materials on all sides (as de-

tailed in Table 2 ), with the following exception:

SERVICE CLEARANCES

When the unit is installed with one side flush

with a wall, the wall on the other side of the unit

FRONT

3 Feet. (0.9 meters)

must not extend beyond the front edge of the

unit. In addition, when the unit is recessed, the

Table 2

side walls surrounding the unit must not extend

4

beyond the front edge of the unit. See Figure 2.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

VENT TERMINATION CLEARANCES

These instructions should be used as a guideline and do not supersede local codes in any way. Install vent according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the current standards of CAN/CGA-B149.1 and - B149.2 in Canada.

Vertical Vent Termination Clearances

Terminate single vent caps relative to building components according to Figure 4.

TERMINATION HEIGHTS FOR VENTS ABOVE FLAT OR SLOPED ROOFS

Horizontal Overhang

2 FT MIN.

Vent

Termination

Storm Collar

Flashing

Concentric

Vent Pipe

2 FT	Vertical
MIN.	Wall
Lowest
Discharge
Opening
H*
	X
	12
Roof Pitch is X/12

1 inch (25.4 mm) Minimum Clearance to Combustibles

*H = MINIMUM HEIGHT FROM ROOF TO LOWEST DISCHARGE OPENING OF VENT

	Roof Pitch	H
		(feet)
	Flat to 6/12	1.0
	Over 6/12 to 7/12	1.25
	Over 7/12 to 8/12	1.5
	Over 8/12 to 9/12	2.0
	Over 9/12 to 10/12	2.5
	Over10/12 to 11/12	3.25
	Over 11/12 to 12/12	4.0

Figure 4

Terminate multiple vent terminations according to the installation codes listed on this page.

		Horizontal Vent Termination Clearances
		Combustible Projection	All horizontal terminations
		2-1/2 inches or less in length	may be located as close
	Combustible Projection		as 6” (152mm) to any
			(non-combustible and
greater than 2-1/2 inches in length			combustible) exterior
			sidewall. This distance
Ventilated			may be decreased to
Soffit	Unventilated		2” (51mm) for non-
			combustible exterior
		Soffit
			sidewalls only, if the
		3"	SV4.5HT-2 termination
			is used.
		(76 mm)
18"		12"	Termination Kit
(457 mm)		(305 mm)
		Termination Kit
Figure 5 -		Side Elevation View

Horizontal Vent Termination Clearances

The horizontal vent termination must have a minimum of 3" (76 mm) clearance to any overhead combustible projection of 2-1/2" (64 mm) or less. See Figure 5. For projections exceeding 2-1/2" (64 mm), see Figure 5. All horizontal terminations may be located as close as 6" (152mm) to any (non-combustible and combustible) exterior sidewall. This distance may be decreased to 2" (51mm) for non-combus- tible exterior sidewalls only, if the SV4.5HT-2 termination is used. For additional vent location restrictions refer to Figure 8 on page 7.

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation follows, however, each installation is unique resulting in variations to those described.

See the page numbers references in the following steps for detailed procedures.

Step 1. (page 6) Construct the appliance framing. Position the appliance within the framing and secure with nailing brackets.

Step 2. (page 6) Route gas supply line to appliance location.

Step 3. (page 9) Install the vent system and exterior termination.

Step 4. (page 22) Field Wiring

a.Millivolt Appliances – Install the operating control switch (not factory provided) and bring in electrical service line for forced air circulating blower (optional equipment).

b.Electronic Appliances – Field wire and install operating control switch.

Step 5. (page 22) Install blower kit (optional equipment).

Step 6. (page 23) Make connection to gas supply.

Step 7. (page 24) Install the logs, decorative volcanic stone and glowing embers.

Step 8. (page 24) Checkout appliance operation.

Step 9. (page 24) Install glass door frame assembly.

Step 10. (page 25) Adjust burner to ensure proper flame appearance.

Step 11. (page 25) Install the hoods.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

5

DETAILED INSTALLATION STEPS

The appliance is shipped with all gas controls and components installed and pre-wired. Remove the shipping carton, exposing the front glass door. Remove the top panel. Remove the cardboard from underneath the pressure relief plates. Press in simultaneously the left and right side of the bottom hinged panel, to release it. Lower the bottom hinged panel. Open the two latches (located under the firebox floor) securing the glass door. Remove the door by tilting it outward at the bottom and lifting it up. Set the door aside protecting it from inadvertent damage. See Figure 53 on page 24.

Step 1. FRAMING

Frame these appliances as illustrated in Figure 9 on page 8, unless the appliance is to be installed in a corner. See Figure 10 on page 8 for corner framing installations. All framing details must allow for a minimum clearance to combustible framing members as shown in

Table 2.

If the appliance is to be elevated above floor level, a solid continuous platform must be constructed.

Headers may be in direct contact with the appliance top spacers but must not be supported by them or notched to fit around them. All construction above the appliance must be self supporting. DO NOT use the appliance for structural support.

The fireplace should be secured to the side framing members using the unit's nailing flanges - one top and bottom on each side of the fireplace front. See Figure 6. Use 8d nails or their equivalent.

	Side	Unit Nailing Flange
		(No clearance to
	Framing
		combustible
		framing is required)
	Left Side Front Corner of Fireplace Shown
	(Right Side Requirements the Same)
	Unit Being Secured By Its Nailing Flanges
		To The Framing
	Note: The nailing flanges, combustible members
	and screw heads located in areas directly adjacent
	to the nailing flanges, are EXEMPT from the 1/2”
	clearance to combustible requirements for the
	firebox outer wrapper. Combustible framing may be
	in direct contact with the nailing flanges and may
	be located closer than 1/2” from screw heads and
	the firebox wrapper in areas adjacent to the nailing
	flanges. Frame the opening to the exact dimensions
	specified in the framing details of this manual.

Figure 6

Step 2. ROUTING GAS LINE

Route a 1/2" (13 mm) gas line along the inside of the right side framing as shown in Figure 7. Gas lines must be routed, constructed and made of materials that are in strict accordance with local codes and regulations. All appliances are factory-equipped with a flexible gas line connector and 1/2 inch shutoff valve. (See step 6 on page 23).

Right Side

Front Corner of

Fireplace Framing

3" (76 mm)

6-1/2" (152 mm)

Figure 7

6	NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS

NOTE: Local Codes Or Regulations

* See Item D in the Text Below.

May Require Different Clearances.

NOTE: Location Of The Vent Termination

N

P

N

Exterior Wall

Center Line

Inside

of Termination

Corner Detail

Must Not Interfere With Access To The

O

Electrical Service.

*18”

V

Horizontal

V

G

Q

Termination

V

18”

Ventilated Soffit

A

Inside Corner

A

= 9” in U.S.

Detail D

= 12” in Canada

H

3 ft.

B

B

X

D

C

V

A

A

V

L

V

Fixed

V

Operable

Closed

Window

3 ft.

Window

F

V

C

J

V

C

B

B

M

C

B

A

I

V

X = Air Supply Inlet

= Vent Termination

= Area where Termination is not Permitted

V

Canadian Installation*

US Installation**

A = Clearance above grade, veranda, porch, deck, or balcony.

12 inches (30cm)*

12 inches (30cm)**

B = Clearance to window or door that may be opened.

6 inches (15cm) for appliances

6 inches (15cm) for appliances

< 10,000 Btuh (3kW), 12 inches (30cm)

< 10,000 Btuh (3kW), 9 inches (23cm)

for appliances > 10,000 Btuh (3kW)

for appliances > 10,000 Btuh (3kW) and

< 50,000 Btuh (15kW), 12 inches (30cm)

for appliances > 50,000 Btuh (15kW)**

C = Clearance to permanently closed window

12 inches (305mm) recommended to

9 inches (229mm) recommended to

prevent window condensation

prevent window condensation

D = Vertical clearance to ventilated soffit located above the

18 inches (458mm)

18 inches (458mm)

termination within a horizontal distance of 18 inches (458mm)

from the center line of the termination

E = Clearance to unventilated soffit***

12 inches (305mm)

12 inches (305mm)

F = Clearance to outside corner

5 inches (12.7cm) minimum

5 inches (12.7cm) minimum

G = Clearance to inside corner

6 inches (15.2cm) minimum

6 inches (15.2cm) minimum

H = Clearance to each inside of center line extended above

3 feet (91cm) within a height of 15 feet

3 feet (91cm) within a height of 15 feet

meter/regulator assembly

above the meter/regulator assembly*

above the meter/regulator assembly**

I = Clearance to service regulator vent outlet

3 feet (91cm)*

3 feet (91cm)**

J = Clearance to nonmechanical air supply inlet to building or

6 inches (15cm) for appliances

6 inches (15cm) for appliances

the combustion air inlet to any other appliance

< 10,000 Btuh (3kW), 12 inches (30cm)

< 10,000 Btuh (3kW), 9 inches (23cm)

for appliances > 10,000 Btuh (3kW)

for appliances > 10,000 Btuh (3kW) and

< 50,000 Btuh (15kW), 12 inches (30cm)

for appliances > 50,000 Btuh (15kW)**

K = Clearance to a mechanical air supply inlet

6 feet (1.83m)*

3 feet (91cm) above if within 10 feet

(3m) horizontally**

L = Clearance above paved sidewalk or paved diveway located

7 feet (2.13m)‡

7 feet (2.13m)‡

on public property

M = Clearance under veranda, porch, deck or balcony

12 inches (30cm)*‡

12 inches (30cm)‡

N = Depth of Alcove (Maximum)

6 feet (1.83m)*

6 feet (1.83m)**

O = Clearance to Termination (Alcove)

6 inches (15.2mm)*

6 inches (15.2mm)**

P = Width of Alcove (Minimum)

3 feet (91cm)*

3 feet (91cm)*

Q = Clearance to Combustible Above (Alcove)

18 inches (457mm)*

18 inches (457mm)**

* In accordance with the current CSA-B149.1 National Gas And Propane Installation Code.

** In accordance with the curent ANSI SZ223.1/NFPA 54 National Fuel Gas Codes.

*** Clearance required to vinyl soffit material - 30 inches (76cm) minimum.

‡ 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:

Figure 8

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

7

FIREPLACE FRAMING SPECIFICATIONS

FRAMING WITH SQUARE HORIZONTAL TERMINATION (SV4.5HT-2)

VENT FRAMING -

Framing should be constructed

of

2x4 or larger lumber.

TOP VENT WITH ONE

90° ELBOW

10-1/2

Framing Dimensions

(267)

VENT FRAMING -

Model No.

A

B

C

D

E

REAR VENT WITH

NO ELBOWS

in.

33 1/4

33 1/4

-----

37 3/4

12 7/8

7

MPDT-3328

(178)

mm

845

845

-----

959

327

5-1/8

(130)12-1/8

								(308)			MPDR-3328	in.	33 1/4	33 1/4	19 5/8	-----	12 7/8
												mm	845	845	498	-----	327
												in.	35 1/4	35 1/4	21 11/16	39 3/4	16
						7					MPD-3530
						(178)						mm	895	895	551	1010	406
				5-1/8				12-1/8
B		D		(130)
												in.	40 1/4	40 1/4	26 11/16	44 3/4	16
								(308)			MPD-4035
												mm	1022	1022	678	1137	406
				C							MPD-4540	in.	45 1/4	40 1/4	26 11/16	44 3/4	16
					E							mm	1149	1022	678	1137	406
		1/2 A

A

Inches (mm)

E is the required framing depth dimension when the finish material (drywall) thickness is 1/2 in. (13mm).

Figure 9

Note-

Venting requirements for rear vent applications in corner installations -

- the horizontal vent length “a” to “b,” must not exceed 28 inches (711 mm)

MPDT-3328 AND MPDR-3328 Models -

Dimensions A to F occur when one 45 degree elbow

is connected directly to the appliance collar.

MPD-3530, MPD-4035 and MPD-4540 Models -

Dimensions D and F occur when one 45 degree

elbow is connected directly to the appliance collar.

b

F

MPD and MPDR units

7 (178)

MPD and MPDT units

Inches

(millimeters)

C

E

D

Model No.

A

B

C

D

E

F

a

MPDT-3328

in.

33 1/8

48 1/2

34 5/16

17 3/16

241/4

5

MPDR-3328

mm

841

1232

872

437

616

127

MPD-3530

in.

35 1/8

57 1/2

40 5/8

19 3/16

28 3/4

6 1/8

mm

892

1461

1032

487

730

156

A

MPD-4035

in.

40 1/8

61 3/16

43 11/32

19 3/16

30 11/16

7 7/8

mm

1019

1554

1101

487

779

200

B

MPD-4540

in.

45 1/8

66 3/8

46 15/16

19 3/16

33 3/16

9 3/4

Back wall of chase/enclosure

mm

1146

1686

1192

487

843

248

(including any finishing materials)

Figure 10

Corner Framing with Square Termination (SV4.5HT-2)

8

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

FIREPLACE SPECIFICATIONS

FRAMING

G

(Louvered Front Model Shown)

SPACERS

(Top and Sides

H

* *See Note 1

and Rear)

*CONCENTRIC FLUE

FLUE - 4-1/2 (114)

COMBUSTION AIR - 7-1/2 (190)

* MPD models have a top and rear vent

MPDR models have only a rear vent

MPDT models have only a top vent

J

* *Note 1 - Collars protrude one inch on MPDT-3328 and MPDR-3328 models.

Top View

NOTE - Eyebrow

N

hood shown as positioned

1/2 (13)

E

3 (76)

in louvered front model.

GAS INLET

* * See Note 1

(Either Side

6 (152)

and bottom)

A

OPTIONAL ELECTRICAL

ELECTRICAL

C

B

L

INLET KNOCKOUT,

D

REQUIRING A FIELD

1-5/8

F**

INLET

PROVIDED JUNCTION BOX

(42)

2-3/4 x 2 (70 x 51)

1-3/8 (35)

COVER PLATE with

(Either Side)

M

KNOCKOUT)

K

Front View

Right Side View

**Rear vent models only

Model No.

A

B

C

D

E

**F

G

H

J

K

L

M

N

MPDT-3328

in.

33 1/8

30 1/8

17

27 1/2

33 1/8

19 5/8

21 1/2

10 3/4

6 13/16

3

8 11/32

2 2/3

13

MPDR-3328

mm

841

765

432

699

841

498

546

273

173

76

212

70

330

MPD-3530

in.

35 1/8

32 1/8

19

29 1/2

35 1/8

21 11/16

24 7/8

12 7/16

9

3

9

3

16

mm

892

816

483

749

892

551

632

316

220

76

220

76

406

MPD-4035

in.

40 1/8

37 1/8

24

34 1/2

40 1/8

26 11/16

29 7/8

14 15/16

9

3

9

3

16

mm

1019

943

610

876

1019

678

759

379

220

76

220

76

406

MPD-4540

in.

40 1/8

37 1/8

24

39 1/2

45 1/8

26 11/16

34 7/8

17 7/16

9

3

9

3

16

mm

1146

943

610

1003

1146

678

886

443

220

76

220

76

406

Figure 11

Step 3. INSTALL THE VENT SYSTEM

These fireplaces are designed, tested and

Massachusetts And New York City, NY

General Information

listed for operation and installation with,

Requirements

and only with, Secure Vent™ Direct Vent

These appliances are approved for installation

System Components, Secure Flex™ Flex-

These instructions should be used as a guide-

in the following USA locations listed in the

ible Vent Components manufactured by

line and do not supersede local codes in any

following:

way. Install vent according to local codes,

Security Chimneys International and Z-

Massachusetts:

these instructions, the current National Fuel

FLEX™ Model GA Venting Systems listed

Gas Code (ANSI-Z223.1) in the USA or the

to UL1777 and ULCS635 manufactured by

These fireplaces are approved for installation

in the US state of Massachusetts if the follow-

current standards of CAN/CGA-B149.1 and -

Flexmaster Canada Limited.

ing additional requirements are met-

B149.2 in Canada.

These approved vent system components

• Installation and repair must be done by a

are labeled for identification. DO NOT use

plumber or gas fitter licensed in the Common-

anyothermanufacturer'sventcomponents

wealth of Massachusetts.

with these appliances. These fireplaces

• The flexible gas line connector used shall not

exceed 36 inches (92 centimeters) in length.

must be vented directly to the outside.

• The individual manual shut-off must be a T-

handle type valve.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

9

Massachusetts Horizontal Vent Requirements

In the Commonwealth of Massachusetts, horizontal terminations installed less than seven

(7) feet above the finished grade must comply with the following additional requirements:

•A hard wired carbon monoxide detector with an alarm and battery back-up must be installed on the floor level where the gas fireplace is installed. The carbon monoxide detector must comply with NFPA 720, be ANSI/UL 2034 listed and be ISA certified.

•A metal or plastic identification plate must be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade and be directly in line with the horizontal termination. The sign must read, in print size no less than one-half (1/2) inch in size, GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.

New York City, NY:

These fireplaces are approved for installation in New York City in the US state of New York.

The vent system may not service multiple appliances, and must never be connected to a flue serving a solid fuel burning appliance. The vent pipe is tested to be run inside an enclosing wall (such as a chase). There is no requirement for inspection openings in the enclosing wall at any of the joints in the vent pipe.

Preparing the Appliance Vent Collar on MPD-3530/4035/4540 Series (Combined Top and Rear Vent) Models

Each of the unit's two vent collars are sealed with a cover plate and a seal plate and gasket. The cover, and seal plate and gasket must be removed from the vent collar being used. Refer to Figure 12 for top vent usage and Figure 13 for rear, and the following steps to prepare the appropriate collar for use.

From the vent collar being used, remove the four screws securing the vent seal plate and gasket. Remove and discard the seal plate and gasket.

When the top vent collar is being used, from inside the firebox, loosen the two screws in the keyhole slots of the cover plate and remove the remaining two cover plate securing screws. Remove and discard the cover plate. Reinstall and securely tighten all four screws.

When the rear vent collar is being used, from inside the firebox, remove the two screws securing the lintel to the rear wall of the firebox, then remove the lintel. Remove the four cover plate securing screws. Remove and discard the cover plate.

10

Reinstall and securely tighten all four cover plate screws. Re-secure the lintel to the rear wall of the firebox.

WARNING: FAILURE TO REINSTALL AND SECURELY TIGHTEN COVER PLATE SCREWS COULD RESULT IN LEAKAGE OF FLUEPRODUCTSINTOTHELIVINGSPACE. VENTCOVERPLATEANDVENTSEALPLATE MUST REMAIN SECURELY INSTALLED ON UNUSED VENT COLLAR. FAILURE TO DO SO COULD RESULT IN LEAKAGE OF FLUE PRODUCTS INTO LIVING SPACE.

ON MPD-3530/4035/4540 SERIES MODELS (COMBINED TOP AND REAR VENT UNITS)

TOP VENT SEAL & COVER PLATE REMOVAL

WHEN USING THE TOP VENT

(OUTSIDE UNIT)	VENT SEAL PLATE
	GASKET
	SECURING
CABINET TOP	SCREWS

TOP VENT

FIREBOX TOP

VENT

COVER PLATE COVER PLATE SECURING SCREWS

(INSIDE UNIT)

CROSS SECTION

Figure 12

ON MPD-3530/4035/4540 SERIES MODELS (COMBINED TOP AND REAR VENT UNITS)

REAR VENT SEAL & COVER PLATE REMOVAL

WHEN USING THE REAR VENT

COVER PLATE	VENT SEAL PLATE
SECURING SCREWS	GASKET
LINTEL	SECURING
SECURING
SCREWS	SCREWS
	REAR VENT
LINTEL
	CABINET BACK
(INSIDE UNIT)	(OUTSIDE UNIT)

CROSS SECTION

Figure 13

Installation of Vent Restrictor

A vent restrictor may be needed with this appliance, install vent restrictor (provided) in the appliance top flue outlet as shown in Figure 14

(MPDT-3328, MPD-3530, MPD-4035 and MPD4540) or rear flue outlet as shown in Figure 15

(MPD-3530, MPD-4035 and MPD-4540). It is held in place by friction, only.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

VENT RESTRICTOR INSTALLATION
	(TOP VENT)
A vent restrictor may be needed when
vertically terminating the vent system above
the roof (when using the appliance top vent),
install vent restrictor in the top vent of the
fireplace outlet on MPD-3530/4035/4540
and MPDT-3328 series models.
If needed, install the restrictor orientated as
shown, either from inside or outside the unit,
in the inner fireplace collar.
RESTRICTOR
INNER
FIREPLACE
COLLAR	APPLIANCE TOP
	VENT OUTLET
Figure 14

VENT RESTRICTOR INSTALLATION

(REAR VENT)

A vent restrictor may be needed when horzontally terminating the vent system from the rear of the appliance (when using the appliance rear vent), install vent restrictor in the rear vent of the fireplace outlet on MPD-3530/4035/4540 series models, in any installation that has a vertical vent run in excess of three feet (0.914 meters).

If needed, install the restrictor orientated as shown, either from inside or outside the unit, in the inner fireplace collar.

INNER FIREPLACE	APPLIANCE REAR
COLLAR	VENT OUTLET
	RESTRICTOR

Figure 15

Select Venting System - Horizontal or Vertical

With the appliance secured in framing, determine vent routing and identify the exterior termination location. The following sections describe vertical (roof) and horizontal (exterior wall) vent applications. Refer to the section relating to your installation. A list of approved venting components is shown in the two tables on page 27 and the two tables on page 28.