Empire Heating Systems MV 145 Quick start guide

INSTALLATION INSTRUCTIONS

AND

OWNER´S MANUAL

GRAVITY DIRECT VENT

WALL FURNACE

EFFECTIVE DATE

APRIL, 2004

WARNING: If the information in

these instructions are not followed

exactly,afireorexplosionmayresult

causing property damage, personal

injuryorlossoflife.

— Do not store or use gasoline or other

flammable vapors and liquids in the

vicinityofthisoranyotherappliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do

notuseanyphoneinyourbuilding.

• Immediately call your gas supplier

from a neighbor's phone. Follow the

gassupplier'sinstructions.

• If you cannot reach your gas supplier,

callthefiredepartment.

— Installation and service must be

performed by a qualified installer,

serviceagencyorthegassupplier.

This appliance may be installed in an

aftermarket, permanently located,

manufactured home (USA only) or

mobile home, where not prohibited by

localcodes.

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.

WARNING: If not installed, operated

and maintained in accordance with the

manufacturer'sinstructions,thisproduct

could expose you to substances in fuel or

from fuel combustion which can cause

deathorseriousillness.

MODELS

MV 120

MV 130

MV 145

CERTIFIED

Page 1MV1XX-2-0404

TABLE OF CONTENTS

SECTION

Important Safety Information

Safety Information for Users of LP Gas

Introduction

Specifications

Gas Supply

Clearances

Installation Instructions

Lighting Instructions

Pilot Flame Characteristics

Main Burner Flame Characteristics

Maintenance

How to Order Repair Parts

Parts List

Parts View

Troubleshooting

PAGE

7-8

8-10

12-13

Page 2 MV1XX-2-0404

IMPORTANT SAFETY INFORMATION

THIS IS A HEATING APPLIANCE

DO NOT OPERATE THIS APPLIANCE WITHOUT FRONT PANEL INSTALLED.

due to excessive lint from carpeting, bedding materials,

etc. It is imperative that control compartments, burners

andcirculating air passageways of theappliance be kept

clean.

• DO NOT put anything around the furnace that will

obstructtheflowofcombustionandventilationair.

• DO keep the appliance area clear and free from

combustible material, gasoline and other flammable

vaporsandliquids.

• DO examine venting system periodically and replace

damagedparts.

• DO make a periodic visual check of pilot and burner.

Cleanandreplacedamagedparts.

• CAUTION: Pilot hole cover must be kept tightly closed

duringoperation.

• DO NOT use this heater if any part has been under

water. Immediatelycallaqualifiedservicetechnicianto

inspect the heater and to replace any part of the control

systemandanygascontrolwhichhasbeenunderwater.

• Due to high temperatures the appliance should be

located out of traffic and away from furniture and

draperies.

• Children and adults should be alerted to the hazards of

highsurfacetemperaturesandshouldstayawaytoavoid

burnsorclothingignition.

• Young children should be carefully supervised when

theyareinthesameroomastheappliance.

• Clothing or other flammable material should not be

placedonorneartheappliance.

• Any safety screen or guard removed for servicing an

appliance must be replaced prior to operating the

appliance.

• Keepburnerandcontrolcompartmentclean.

• Ventcaphotwhilefurnaceisinoperation.

• Installation and repair should be done by a QUALI-

FIED SERVICE PERSON. The appliance should be

inspected before use and at least annually by a qualified

service person. More frequent cleaning may be required

Page 3MV1XX-2-0404

SAFETY INFORMATION FOR USERS OF LP-GAS

Someday when there may not be a minute to lose,

everyone's safety will depend on knowing exactly what to

do.If,afterreadingthefollowinginformation,youfeelyou

still need more information, please contact your gas

supplier.

• Useyourneighbor's phoneandcall atrainedLP-Gasservice

person and the fire department. Even though you may not

continuetosmellgas,donotturnonthegasagain.Donotre-

enterthebuildingorarea.

• Finally, let the service man and firefighters check for

escaped gas. Have them air out the area before you return.

Properly trained LP-Gas service people should repair the

leak,thencheckandrelightthegasapplianceforyou.

have been out of service for a time may develop internal

rust which will cause odor fade. If such conditions are

suspected to exist, a periodic sniff test of the gas is

advisable. If you have any question about the gas odor,

call your LP-gas dealer. A periodic sniff test of the LP-

gasisagoodsafetymeasureunderanycondition.

• If,at any time, youdonot smell theLP-Gasodorant and you

think you should, assume you have a leak. Then take the

same immediate action recommended above for the

occasionwhenyoudodetecttheodorizedLP-Gas.

• If you experience a complete "gas out," (the container is

under no vapor pressure), turn the tank valve off

immediately. If the container valve is left on, the container

may draw in some air through openings such as pilot light

orifices. If this occurs, some new internal rusting could

occur. If the valve is left open, then treat the container as a

new tank. Always be sure your container is under vapor

pressure by turning it off at the container before it goes

completely empty or having it refilled before it is

completely empty.

odorant. Odorants in LP-Gas also are subject to oxidation.

This fading can occur if there is rust inside the storage tank or

inirongaspipes.

The odorant in escaped gas can adsorb or absorb onto or into

walls,masonryandothermaterials and fabrics in a room. That

will take some of the odorant out of the gas, reducing its odor

intensity.

LP-Gas may stratify in a closed area, and the odor intensity

could vary at different levels. Since it is heavier than air, there

may be more odor at lower levels. Always be sensitive to the

slightest gas odor. If you detect any odor, treat it as a serious

leak.Immediatelygointoactionasinstructedearlier.

Propane(LP-Gas)isaflammablegaswhichcancausefires

andexplosions.Initsnaturalstate,propaneisodorlessand

colorless. You may not know all the following safety pre-

cautions which can protect both you and your family from

an accident. Read them carefully now, then review them

point by point with the members of your household.

• Do not operate electric switches, light matches, use your

phone.Donotdoanythingthatcouldignitethegas.

•Get everyone out of the building or area. Do that

IMMEDIATELY.

•Closeallgastankorcylindersupplyvalves.

•LP-Gas is heavier than air and may settle in low areas

such as basements. When you have reason to suspect a

gas leak, keep out of basements and other low areas. Stay

outuntilfirefightersdeclarethemtobesafe.

• Learnto recognizetheodorof LP-gas.Your local LP-Gas

Dealer can give you a "Scratch and Sniff" pamphlet. Use it

to find out what the propane odor smells like. If you suspect

thatyourLP-Gashasaweakorabnormalodor,callyourLP-

GasDealer.

• If you are not qualified, do not light pilot lights, perform

service, or make adjustments to appliances on the LP-Gas

system. If you are qualified, consciously think about the

odor of LP-Gas prior to and while lighting pilot lights or

performingserviceormakingadjustments.

• Sometimes a basement or a closed-up house has a musty

smell that can cover up the LP-Gas odor. Do not try to light

pilotlights, perform service, or make adjustments in an area

where the conditions are such that you may not detect the

odoriftherehasbeenaleakofLP-Gas.

• Odorfade, due tooxidation by rustoradsorption onwallsof

new cylinders and tanks, is possible. Therefore, people

should be particularly alert and careful when new tanks or

cylinders are placed in service. Odor fade can occur in new

tanks, or reinstalled old tanks, if they are filled and allowed

to set too long before refilling. Cylinders and tanks which

Some people cannot smell well. Some people cannot smell

theodor ofthechemicalputinto thegas.You mustfindout

if you can smell the odorant in propane. Smoking can

decreaseyourabilitytosmell. Beingaroundanodorforatime

can affect your sensitivity or ability to detect that odor.

Sometimes other odors in the area mask the gas odor. People

may not smell the gas odor or their minds are on something

else. Thinking about smelling a gas odor can make it easier to

smell.

The odorant in LP-gas is colorless, and it can fade under

somecircumstances.For example, if there is an underground

leak, the movement of the gas through soil can filter the

LP-GAS WARNING ODOR

If a gas leak happens, you should be able to smell the gas because of the odorant put in the LP-Gas.

That's your signal to go into immediate action!

NO ODOR DETECTED - ODOR FADE

SOME POINTS TO REMEMBER

Page 4 MV1XX-2-0404

INTRODUCTION

SPECIFICATIONS

InstallationinResidentialGarages

Gas utilization equipment in residential garages shall be

installed so that all burners and burner ignition devices are

locatednotlessthan18"(457mm)abovethefloor.

Such equipment shall be located, or protected, so it is not

subjecttophysicaldamagebyamovingvehicle.

QualifiedInstallingAgency

Installation and replacement of gas piping, gas utilization

equipment or accessories and repair and servicing of

equipment shall be performed only by a qualified agency. The

term "qualified agency" means any individual, firm,

corporation or company which either in person or through a

representative is engaged in and is responsible for (a) the

installationorreplacement of gas piping or (b)theconnection,

installation, repair or servicing of equipment, who is

experienced in such work, familiar with all precautions

required and has complied with all the requirements of the

authorityhavingjurisdiction.

The installation must conform with local codes or, in the

absenceoflocalcodes,with theNational FuelGas CodeANSI

Z223.1/NFPA54*NaturalGasandPropaneInstallationCode,

CSAB149.1.

*Available from the American National Standards Institute, Inc., 11 West

42ndSt.,NewYork,NY10036.

HighAltitudes

For altitudes/elevations above 2,000 feet (609.9 m), input

ratingsshouldbereducedattherateof4percentforeach1,000

(305m) feet above sea level. Canadian High Altitudes for

locations having an elevation above mean sea level between

2,000 feet (609.9 m) and 4,500 feet (1370m), use orifices as

indicatedinthefollowingtable:

Introduction

Always consult your local Building Department regarding

regulations, codes or ordinances which apply to the

installationofadirectventwallfurnace.

InstructionstoInstaller

1. Installer must leave instruction manual with owner after

installation.

2. Installer must have owner fill out and mail warranty card

suppliedwithfurnace.

3. Installer should show owner how to start and operate

furnaceandthermostat.

Warning:

Any change to this furnace or its control can be

dangerous. This is a heating appliance and any panel,

door or guard removed for servicing an appliance

mustbereplacedpriortooperatingtheappliance.

GeneralInformation

This furnace is design certified in accordance with American

National Standard/CSA Standard Z21.86b and CSA 2.32b-

2002 by the Canadian Standard Association, as a Gravity

Direct Vent Wall Furnace to be installed on an outside wall

accordingtotheseinstructions.

Any alteration of the original design, installed other than

as shown in these instructions or use with a type of gas not

shownontheratingplateistheresponsibilityoftheperson

andcompanymakingthechange.

Important

All correspondence should refer to complete Model No.,

SerialNo.andtypeofgas.

Notice: During initial firing of this unit, its paint will bake out

and smoke will occur. To prevent triggering of smoke alarms,

ventilatetheroominwhichtheunitisinstalled.

Model

Input BTU/HR (KW)

Min. Input BTU/HR (KW)

Efficiency Rating* (%)

Height (inches / mm)

Width (inches / mm)

Depth (inches / mm)

Gas Inlet

Input Vent Diameter (inches / mm)

Output Vent Diameter (inches / mm)

MV 145

20,000 (5.81)

6,900 (2.00)

72%

24.4 / 620

27.3 / 688

6.75 / 170

3/8” NPT

6 1/4” (160 mm)

3 1/2” (89 mm)

MV 120

8,400 (2.44)

3,800 (1.10)

72%

24.4 / 620

21.2 / 538

6.75 / 170

3/8” NPT

3 9/16” (90 mm)

2 1/8” (54 mm)

MV 130

14,000 (4.07)

6,000 (1.74)

72%

24.4 / 620

27.3 / 688

6.75 / 170

3/8” NPT

4 3/4” (121 mm)

2 5/8” (67 mm)

*The efficiency rating of the appliance is a product thermal efficiency determined under continuous operating conditions and was

determinedindependantlyofanyinstalledsystem.

Page 5

0-2000feet (0-610 m) 2000-4500 feet (610-1370 m)

MOD

MV 120

MV 130

MV 145

0.053”(1.35 mm)

0.070”(1.77 mm)

0.077”(1.95 mm)

0.050”(1.27 mm)

0.066”(1.67 mm)

0.072”(1.83 mm)

LPG

0.035”(0.88 mm)

0.043”(1.10mm)

0.053”(1.35 mm)

LPG

0.033”(0.83 mm)

0.041”(1.03mm)

0.050”(1.27 mm)

MV1XX-2-0404

Figure 2

GAS SUPPLY

Compounds used on threaded joints of gas piping shall be

resistant to the action of liquefied petroleum gases. The gas

lines must be checked for leaks by the installer. This should be

done with a soap solution watching for bubbles on all exposed

connections,andifunexposed,apressuretestshouldbemade.

Never use an exposed flame to check for leaks. Appliance

must be disconnected from piping at inlet of control valve

and pipe capped or plugged for pressure test. Never

pressure test with the appliance connected; control valve

willsustaindamage!

A gas valve and ground joint union should be installed in the

gas line upstream of the gas control to aid in servicing. It is

required by the National Fuel Gas Code that a drip line be

installed near the gas inlet. This should consist of a vertical

length of pipe tee connected into the gas line that is capped on

the bottom in which condensation and foreign particles may

collect.

Pressure Testing of the Gas Supply System

1. To check the inlet pressure to the gas valve, a 1/8" (3 mm)

N.P.T. plugged tapping, accessible for test gauge

connection, must be placed immediately upstream of the

gassupplyconnectiontotheappliance.

2. The appliance and its individual shutoff valve must be

disconnected from the gas supply piping system during any

pressure testing of that system at test pressures in excess of

1/2psig(3.5kPa).

3. The appliance must be isolated from the gas supply piping

system by closing its individual manual shutoff valve

during any pressure testing of the gas supply piping system

attestpressuresequaltoorlessthan1/2psig(3.5kPa).

Attention! If one of the above procedures results in pressures

in excess of 1/2 psig (14" w.c.) (3.5 kPa) on the appliance gas

valve,itwillresultinahazardouscondition.

CheckingManifoldPressure

Both Propane and Natural gas valves have a built-in pressure

regulator in the gas valve. Natural gas models will have a

manifold pressure of approximately 4.0" w.c.(0.996 kPa) for

MV120 and 130 or 6.0" w.c.(1.494 kPa) for MV145 at the

valve outlet with the inlet pressure to the valve from a

minimum of 5.0" w.c.(1.245 kPa) for MV120 and 130 or 7.0"

w.c.(1.742 kPa) for MV145 for the purpose of input

adjustmenttoamaximumof10.5" w.c.(2.61kPa).Propanegas

models will have a manifold pressure approximately 10.0"

w.c.(2.49kPa) at the valve outlet with the inlet pressure to the

valvefromaminimumof11.0"w.c.(2.739kPa)forthepurpose

of input adjustment to a maximum of 13.0" w.c.(3.237kPa). A

1/8" (3mm) N.P.T. plugged tapping, accessible for test gauge

connection,islocatedontheoutletsideofthegascontrol.

LocatingGasSupply

The gas line can enter the unit either through the floor or

outsidewall. The gaslineopening should bemade at thistime.

Location of the opening will be determined by the position of

floorjoistsandthevalveandunionusedforservicing.

Recommended Gas Pipe Diameter

Note: Never use plastic pipe. Check to confirm whether your

localcodesallowcoppertubingorgalvanized.

Note: Since some municipalities have additional local codes,

itisalwaysbest to consult your local authority and installation

code.

Theuseofthefollowinggasconnectorsisrecommended:

— ANS Z21.24 Appliance Connectors of Corrugated Metal

TubingandFittings

—ANSZ21.45Assembled Flexible Appliance Connectors of

OtherThanAll-MetalConstruction

The above connectors may be used if acceptable by the

authority having jurisdiction. The state of Massachusetts

requires that a flexible appliance connector cannot exceed

threefeetinlength.

Consult the current National Fuel Gas Code, ANSI Z223.1

CAN/CGA-B149(.1or.2)installationcode.

InstallingaNewMainGasCock

Each appliance should have its own manual gas cock. In the

stateofMassachusettsthegas cock must be a T handle type. A

manual main gas cock should be located in the vicinity of the

unit. Where none exists, or where its size or location is not

adequate, contact your local authorized installer for

installationorrelocation.

Pipe Lenght

(Feet) Schedule 40 Pipe

Inside Diameter Tubing, Type L

Outside Diameter

Nat.

1/2”

1.3 cm

5/8”

1.6 cm

3/4”

1.9 cm

7/8”

2.2 cm

L.P.

3/8”

1.0 cm

1/2”

1.3 cm

1/2”

1.3 cm

3/4”

1.9 cm

0 - 10

10 - 40

40 - 100

100 - 150

Figure 1

3” (76 mm)

DRIP LEG

Alternate locations

for shut off valve

Gas supply inlet

NPT Niple

NPT NipleClose NipleShut Off

Valve

NPT Gas

Supply NPT Union

Flare FittingFlex

Tubbing

Flare Shut

Off Valve

Gas

Supply Tee

Handle

Tee Handle

FLEXIBLE GAS LINE CONNECTION

RIGID GAS LINE CONNECTION

Page 6

L.P.

3/8”

1.0 cm

1/2”

1.3 cm

1/2”

1.3 cm

1/2”

1.3 cm

Nat.

1/2”

1.3 cm

1/2”

1.3 cm

1/2”

1.3 cm

3/4”

1.9 cm

MV1XX-2-0404

CLEARANCES

use of tubes not supplied by the manufacturer results in

unsatisfactoryperformance.

Theventcap ofadirectventappliance, withaninputof10,000

Btu/h (3 kW/h) or less shall be located at least 6" (150 mm)

from any opening through which flue gases could enter a

building; for appliances up to 50,000 Btu/h (14.6 KW/h) this

distance shall be at least 9" (229 mm). The bottom of the vent

cap and the air intake shall be located at least 12" (305mm)

abovegrade.

WARNING: The nearest point of the vent cap should

be a minimum horizontal distant of six (6) feet

(1.83m) from any pressure regulator. In case of

regulator malfunction, the six (6) feet (1.83m)

distance will reduce the chance of gas entering the

ventcap.

1. In selecting a location for installation, it is necessary to

provide adequate accessibility clearances for servicing and

proper installation. In order to that, at least 6”(152 mm)

shouldbeleftclearfrom thewall onrightsideofthecabinet

and4”(101mm)onleftside.

2. Unit is supported by a wall support plate secured to the

wall.

3. The minimum clearances from casing to combustible

construction is 36" (914 mm) on top, 4" (102 mm) on each

side and 4" (102 mm) from the floor or from the top surface

of carpeting, tile or other floor covering and 0" (0 mm) to

rearwall.

4. Theminimumdistancefromthecenteroftheventcaptothe

nearestoutsidecornerorobstructionis16"(407mm).

5. The MV 120, MV 130 and MV 145 minimum wall depth is

4 1/2”(114 mm) and the maximum is 12”(305 mm). The

Figure 3

Vent terminal clearances

A= clearance above grade, veranda, porch, deck

or balcony

B= clearance to window or door that may

be opened

C= clearance to permanently closed window

D= vertical clearance to ventilated soffit located

above the terminal within a horizontal distance

of 2 feet (61 cm) from the center line

of the terminal

E= clearance to unventilated soffit

F= clearance to outside corner

G= clearance to inside corner

H= clearance to each side of center line extended

above meter/regulator assembly

I= clearance to service regulator vent outlet

Vent teminal

Area where

terminal is

not permitted

Air supply

CANADIAN INSTALLATIONS 2

US INSTALLATIONS

12” (30 cm)

6” (15 cm) for appliances 10,000 Btu/h

(3 kW), 12” (30 cm) for appliances 10,000

Btu/h (3 kW) and 100,000 Btu/h (30 kW)

clearance in accordance with local

installation codes and the

requirements of the gas supplier

3 feet (91 cm) within a height 15 feet (4.5 m)

above meter/regulator assembly

3 feet (91 cm)

12” (30 cm)

6” (15 cm) for appliances 10,000 Btu/h

(3 kW), 9” (23 cm) for appliances 10,000

Btu/h (3 kW) and 0,000 Btu/h (15 kW)

clearance in accordance with local

installation codes and the

requirements of the gas supplier

< 5

clearance in accordance with local

installation codes and the

requirements of the gas supplier

Page 7MV1XX-2-0404

INSTALLATION INSTRUCTIONS

servingaseparatesolid-fuelburningappliance.

CuttingtheVentHole

Begin the installation by locating the wall studs on the side

wall of the structure. Find the centerlines between the studs

where you want the unit to be mounted. Refer to the following

illustration (Figure 5) for a side view of how the finished

installation should look. This appliance is certified for

installation on walls which are a maximum of 12” (305 mm)

thick. The vent assembly supplied with the unit will

accomodatewallsuptothatthickness.

With the template flat and level against the inside wall, mark

thelocationfortheopeningfortheventassemblyaswellasthe

location of the two holes for mounting the wall support plate

andthe one for thegassupply, if the supplyisto be through the

wall. If desired, (and in accordance with all applicable

building and plumbing codes) the gas piping can be brought

intotheroomthroughthefloorunderneaththeunit.

Removethe template from the wallandwith a long drill, make

a hole in the center of the opening for ventilation all the way

through inside and outside wall. Trace the wall opening in

LocationofFurnace

Theheater mustbeon anoutside wall inthe roomtobe heated.

When choosing a location for the furnace please remember

that the vent cap supplied with the unit must be installed

without alteration, with the exception of cutting the vent tubes

and insulation to length, as directed in these instructions. The

outside vent cap needs to be flush to the wall, so select a

relativelysmoothexteriorsurface.

Since this appliance is a direct vent (balanced flue) design, all

combustion and ventilation air is drawn from outside of the

structure. No special considerations for combustion are

necessary inside the structure. Once you have determined that

the exterior vent will meet the clearances above, you must

locate the heater on the inside wall of the room to be heated.

Begin the installation by locating the wall studs on the inside

wall of the structure. Find the centerlines between the studs

whereyouwanttheunittobemounted.

LocatingWallOpening

A full scale template is furnished with the unit which

illustrates the vent and gas supply openings and mounting

holesintheircorrectlocationsonthewall.

Note:the figure 4 gives the required dimensions for mounting

theunit,intheeventthatthetemplateisunusableorlost.

Place the template on the wall so that the vent opening will be

located between the studs and, in the case of the MV 130, for

example, the bracket mounting holes are over the studs (16” /

406 mm, on center). DO NOT CUT THE WALL STUDS IN

ORDER TO INSTALL THE UNIT. Place the bottom edge of

the template directly on the floor or the floor covering such as

carpetingortile.

InstallingtheUnit

Make sure that the location you have selected for the furnace

compliestherequirementsabovebeforeitsinstallation.

This gas appliance must not be connected to a chimney flue

3/16” (4.7 mm)

Mounting Holes D

21 5/8” (550 mm)

FLOOR

Figure 4

CLEARANCES (cont.)

J= clearance to nonmechanical air supply inlet to

building or the combustion air inlet to

any other appliance

K= clearance to a mechanical air supply inlet

L= clearance above paved sidewalk or paved

driveaway located on public property

M= clearance under veranda, porch deck, or balcony

CANADIAN INSTALLATIONS 2

US INSTALLATIONS

6” (15 cm) for appliances 10,000 Btu/h

(3 kW), 9” (23 cm) for appliances 10,000

Btu/h (3 kW) and 0,000 Btu/h (15 kW)

3 feet (91 cm) above if within 10 feet

(3 m) horizontally

< 5

clearance in accordance with local

installation codes and the

requirements of the gas supplier

1 In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.

2 In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.

3 A vent shall not terminate directly above sidewalk or paved driveaway that is located between two

single family dwellings and serves both dwellings.

4 Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides

beneaththefloor.

6” (15 cm) for appliances 10,000 Btu/h

(3 kW), 12” (30 cm) for appliances 10,000

Btu/h (3 kW) and 100,000 Btu/h (30 kW)

6 feet (1.83 m)

7 feet (2.13 m)

12” (30 cm)

Page 8

10 1/4” (260 mm)

16” (406 mm)

5 1/2” (140 mm)

6 3/4” (171 mm)

8 1/2” (216 mm)

6 1/8” (155 mm)

9” (230 mm)

4 1/4” (108 mm)

3 3/4” (98 mm)

MOD

MV 120

MV 130

MV 145

MV1XX-2-0404

wall and fasten the vent cap to the wall using the 4 screws

(provided with the unit) in the holes prepared in the vent cap

plate.

Making certain that the vent cap is flushed to the outer wall,

draw a line all the way around the vent pipe where it comes

throughthe inside wall. (Note:thislineonly marks thepoint

where the pipe comes through the wall. It is not where you

willcutthepipes).

Remove the vent assembly from the wall. Measure 7/ 16” (11

mm) from the line just made and make a mark towards the

openendofthepipe.

Mark several spots around the pipe insulation at this 7/ 16”

(11mm)distanceandthentapeasheetofpaperaroundthepipe

atthistimetoassureanevencut.

Use a cutter knife to cut only the insulation and its lining and a

hack saw or tin snips to cut the larger pipe at the cut line on the

edgeofthepaper.

Cut a clean, straight line on the outside tube, being careful not

tocrimpordeformthetube.

It is very important that this be a clean straight cut for the

heatertoperformproperly.

On MV 120 and MV 130 units, you must proceed to cut the

insulationagainthroughthelineoriginallytraced(flushlineof

the inner wall, 7/16” back from the cut end of the tube). (See

drawing)

On MV145 units, you must proceed to cut the lower edge of

the insulation (only this part, not the complete circumference)

to allow the ventilation come through the wall mounting

supportbar.Cutaccordingfollowingdrawing:

Measure now 2” (50.8 mm) from the cut end of the larger pipe

and make a mark on the inner pipe. Be certain that the inner

pipe is thoroughly marked so that it will be 2” (50.8 mm)

longerthanthelargerpipewhencut.Theinnerpipeneedstobe

cutwithahacksaw.

Remember to remove the vent assembly from the wall in

ordertocutthetubes

Installingtheventassemblyandwallsupportplate

In case outside wall is of tiled wood construction, rough or

unlevelled, the use of silicone sealing compound to avoid

the indicated diameter in both walls and cut them. Your hole

will be about 1 to 2” (26 to 52 mm), depending on the unit

model,largerindiameterthantheventpipe.

Makesure thetwo holes(in theinsideand theoutside wall)are

concentric to one another and line up. If the opening in the

outsidewallishigherthantheopeningintheinsidewall,water

from rain or from lawn sprinklers could enter the vent cap and

drip back into the heater, causing it to rust out. Use a

carpenter´s level and square to confirm that the two holes are

levelandinlinewithoneanother.

If the vent cap is to be installed on shingles or clapboards, or if

itappearsthataprojectionwithin6”(152.4mm)oftheairinlet

section could shield the air inlet, the entire vent should be

supportedawayfromthewallasshowninFigure6.

For vinyl siding installation, order the appropriated kit

throughthePartsDepartment.

Note: the vent assembly of MV 145 units has off-centre tubes

andmustbeinstalledinacertainposition.Makesurethearrow

engraved on its ring is located in the upper position. If not,

connectingtheinnerpipeintheappliancewon´tbepossible.

Markingandcuttingtheventpipestotheproperlength

From the outside of the building, push the vent assembly

through the hole until the vent cap flange is against the outer

INSTALLATION INSTRUCTIONS (cont.)

Figure 6

Figure 7

Vent cap

Support

box

Pilot burner

viewing Vent

cap

Wall

bracket

Figure 5

Centerline

Outside

wall

Reflecting

mirror

21 5/8” (550 mm) minimum

Page 9

Insulation

Top

Flue gases tube

Air intake tube

In models

MV-120 /MV-130:

7/16 "

In model MV-145:

3/4 "

MV1XX-2-0404

Important:removestyrofoaminsidefrontcovernow.

Remove the small piece of wood from the rear of the heater

and discard. Four small adhesive foam pads are included with

theunit and can befoundinthe accessory bag.Placethefoam

pads on the four raised “bumps” on the rear of the unit.

These foam pads will protect the wall surfaces from

damage.

Hangtheheateronthearmsonthewallsupportbracket,taking

extreme care to ensure that the small diameter vent pipe fits

inside the smaller opening in the rear of the unit. (See Figure

9). The larger diameter vent pipe must then slide over the

outsideflangeopening.

Warning: the heater will not function properly if these

connections are not tight and clean. Secure the unit to the

wallsupportbracketwiththetwoscrewsprovided.

AttachtheLightingInstructionstothebackoftheunitsothat

they may be read when necessary. These instructions are for

current and future use. Make sure they remain accesible after

theunitisinstalled.

Connectingthegassupply

Connect the gas supply to the 3/8” (9.5 mm) pipe on the lower

part of the right side of the heater by using standard

connectors. Please refer to the cautionary remarks noted in the

beginningofthismanual.

After connecting the gas supply to the gas control on the

heater, the connections must be checked thoroughly for

leaks. With the shut-off valve turned ON, but the gas control

knobontheheaterOFF,applyliberalamountsofasoapywater

solution to all of the piping joints. A gas leak will cause

bubblestoform.Note anyleaks inthepipingsystem,then shut

off the gas at the shut-off valve, or at the gas meter or

propane/LPtankservingthebuilding.Fixtheleakingjointand

re-testthejointsasdirectedabove.

Once the supply is checked and does not leak, place the cover

on the unit. See Figure 10. Be sure the foam packing has been

removed. Secure the cover with the two nuts at the bottom of

theunitwhichyouhadremovedwhenunpacking.

eventualwaterfiltrationortheentranceofbugsisnecessary.

Press the flange against the outer wall surface and fasten the

ventcapto the wall using the 4screws(providedwiththe unit)

in the holes prepared in the vent cap plate. Once the vent is

secured to the wall, proceed filling the gaps between the vent

plateandthewallwithsiliconesealingcompound.

Inside the building, place the wall support plate (which is

taped inside the cabinet during shipment) over the open end of

theventpipeandpushtheplatefirmlyagainsttheinteriorwall.

You might need to handle the introduction of the larger

pipe into the hole of the support plate with your fingers

since the pipe could have suffered some minor

deformationthroughthecuttingprocess.

Now level the plate with carpenter level and mark the

mounting holes with a pencil (see Figure 8). Remove the wall

supportplatefromtheventpipeanddrillthetwoholeswiththe

appropriatedrillbit.

Place the wall support plate over the vent pipe again and affix

the plate to the wall using the two screws provided with the

unit.

Note: hollow wall fasteners (also supplied with the unit)

are necessary for model MV 120. Models MV 130 and MV

145canbemountedonthewallstuds.

Mountingthefurnace

Take off the cover by loosening the two screws at the bottom.

Pull the bottom away from the heater and lift it up off the tabs

ontop.

INSTALLATION INSTRUCTIONS (cont.)

Figure 8

Figure 9

Figure 10

Page 10 MV1XX-2-0404

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