Enerco MHVFB10LP User Manual

Installer: Leave this manual with the appliance. Consumer: Retain this manual for future reference.

INSTALLATION INSTRUCTIONS AND OWNER’S MANUAL

MR. HEATER

MODEL

MHVFB10LP

READ INSTRUCTIONS CAREFULLY: Read and follow all instructions. Place instructions in a safe place for future reference. Do not allow anyone who has not read these instructions to assemble, light, adjust or operate the heater.

UNVENTED LP-GAS FIRED BUDDY WALL-MOUNT HEATER

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.

- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

- An LP cylinder not connected for use shall not be stored in the vincinity of this or any other appliance.

- WHA T TO DO IF YOU SMELL GAS

• Shut off gas supply

• Do not try to light any appliance

• Do not touch an electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

- Installation and service must be performed by a qualified installer , service agency , or the gas supplier . WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is inst alled. Provi-

sions for adequate combustion and ventilation air must be provided. Refer to Fresh Air for Combustion and V entilation section on page 3 of this manual.

WARNING: Improper inst allation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer , service agency , or gas supplier.

ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 · 216-916-3000

Installation instructions and Owner’s Manual

70586 04/06

This appliance may be installed in an aftermarket* permanently manufactured (mobile) home, where not prohibited by local codes.This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with any other gas.

*Aftermarket completion of sale, not for the purpose of resale, from the manufacturer .

WARNINGS

IMPORTANT: Read this owner’s manual carefully

and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

WARNING: This appliance is equipped for (natural or propane) gas. Field conversion is not permited.

WARNING: Do not use any accessory not approved for use with this heater.

WARNING: Any change to this heater or its controls can be dangerous.

• Do not place clothing or other flammable

material on or near the appliance. Never place any objects on the heater.

• Due to high temperatures, heater should be

kept out of traffic and away from furniture and draperies.

• Surface of heater becomes very hot when

running. Keep children and adults away from hot surfaces to avoid burns or clothing ignition. Heater will remain hot for a time after shutdown. Allow heater surfaces to cool before handling.

• Y oung children should be carefully supervised

when they are in the same room with heater.

• Make sure grille guard is in place before

running heater. If screen or grille guard is removed for servicing it must be replaced prior to operating the heater.

• Keep the appliance area clear and free from

combustible materials, gasoline, and other flammable vapors and liquids.

Every time hose or tank is connected to unit, connection must be checked for leaks in one or more ways: Apply soapy water to connection, look for bubbles, listen for hiss of escaping gas, feel for extreme cold, smell for rotten egg odor. Do not use if leaking!

PRECAUTIONS:

WARNING:

1. This heater needs outside ventilation air to run properly . The Oxygen Depletion Sensor (ODS) safety shutoff system shuts down the heater if not enough fresh air is available. See Fresh Air for Combustion and Ventilation, page 3.

2. Keep all air openings in heater clear, free of debris or any blockage. This will insure that enough air for proper combustion enters the heater .

3. If heater shuts off, do not relight until you provide fresh, outside air . If heater keeps shutting of f, it requires servicing.

4. Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater .

5. Do not run heater:

• Where flammable liquids or vapors are used or

stored

• During dusty conditions.

6. Before using furniture polish, wax, carpet cleaner or similar products, turn heater off. If heated the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture.

7. Do not use heater if any part has been underwater . Immediately call a qualified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been underwater.

8. Operating heater above elevations of 4,500 feet could cause pilot/ODS to shutdown heater .

9. Always run heater with control knob in a locked position. Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result if control knob is left between locked positions.

DANGER: Carbon monoxide poisoning may lead to death.

Carbon Monoxide Poisoning:

Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly . Get fresh air at once! Have heater serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, persons with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes.

Propane/LP Gas:

Propoane/LP gas is odorless. An odor making agent is added to propane/LP gas. The odor help s you detect a Propane/LP gas leak. However the odor added to propane/LP gas may be present even though no odor exists. Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

2 Installation instructions and Owner’s Manual

Product Features

Control Knob

Burner

Grill

Heater Cabinet

Front Panel

Figure 1

SAFETY DEVICE

This heater has a pilot with an Oxygen Depletion Sensor (ODS) safety shut off system. The ODS/pilot shuts off the heater if there is not enough fresh air.

IGNITION SYSTEM

PIEZO: MHVFB10LP – The heater is equipped with a

piezo manual ignitor. This system requires no matches, batteries, or other source to light heater.

LOCAL CODES

Install and use heater with care. Installation must conform to local codes or in the ab-

sences of local codes, use the latest edition of National Fuel Gas Code ANSI Z223.1/NFP A 54.

UNPACKING

1. Remove heater from carton.

2. Remove all protective packaging applied to heater for shipment.

3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater.

WARNING: Even though this heater may be used in enclosures such as ice houses, lodges, cabins

or enclosed porches, fresh air for combustion and ventilization requirements apply the same as below.

FRESH AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall not be inst alled in a

confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

ESTABLISHING ADEQUATE VENTILA TION

The following are excerpts from National Fuel Gas Code, NFP A 54/ ANSI Z223.1, Section 5.3, Air for

Combustion and Ventilation. All spaces in homes fall

into one of the three following ventilation classifications:

1. Unusually Tight Construction

2. Unconfined Space

3. Confined Space

This heater must not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. The information on pages 3 through 5 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

If your home meets all of the three following criteria you must provide additional fresh air. See V entilation Air from Outdoors, page 5.

Unusually tight construction is defined as construction where:

a. Walls and ceilings exposed to the outside atmo-

sphere have a continuous water vapor retarder with a rating of one perm (6 x 10

-11

kg per pa-sec-m2) or less

with openings gasketed or sealed and

b. Whether stripping has been added on openable

windows and doors, and

c. Caulking or sealants are applied to areas such as

joints around windows and door frames, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

If you home does not meet all of the three criteria above, see Determing the T ype of Heater Location Space, page 4.

Confined Space and Unconfined Space

The National Fuel Gas Code, NFP A 54/ ANSI Z223.1

defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m

per kW) of the aggregate input rating of all appliances installed in that space, and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kW) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

*Adjoining rooms are communication only if there are doorless passageways or ventilation grills between them.

DETERMINING THE TYPE OF HEA TER LOCATION SP ACE:

Use this method to determine if you have a confined or unconfined space.

Note: the space includes the room in which you install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

Installation instructions and Owner’s Manual

1. Find the volume of the space by multiplying room

12345

5 5

length x width x height.

Example: Space size 18f t (length) x 18ft. (width) x 8ft.

(height) = 2592

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2. Divide the space volume by 50 cubic feet to determine the maximum Btu/hr the space can support.

Example: 2592 cu.ft. (volume of space) / 50 cu.ft. = 51.8

or 51,800 (maximum Btu/hr the space can support)

WARNING: If the area in which the heater may be

operated is smaller than defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by the methods described in the National Fuel Gas Code, NFP A 54/ ANSI Z223.1, Section 5.3 or applicable local codes.

3. Add the Btu/hr of all the fuel-burning appliances in the space such as, V ent–free heater, Gas water heater , Gas furnace, Vented gas heater , Gas fireplace logs, and Other gas appliances*

*Do not include direct-vent gas appliances. Directvent draws combustion air from the outdoors and vents to the outdoors.

Example: Gas water heater 40,000 Btu/hr Vent Free Heater + 20,000 Btu/hr T otal =60,000 Btu/hr

4. Compare the maximum Btu/hr the space can support with the actual amount of Btu/hr used.

Example: 51,800 Btu/hr (maximum Btu/hr the

space can support) 60,000 Btu/hr (Actual amount of Btu/hr

used)

The space in the above example is a confined space because the actual Btu/hr used is more than the maximum Btu/hr the space can support.

Y ou must provide additional fresh air . Your options are as follows:

A. Rework worksheet, and the space of an adjoining

room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between the rooms. See Ventilation Air From Inside Building (Fig. 2)

B. Vent room directly to the out doors. See V entilation Air

From Outdoors (Fig. 3).

C.Install a lower Btu/hr heater if lower Btu/hr size makes

room unconfined.

If actual Btu/hr used is less than the maximum Btu/ hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

VENTILATION AIR Ventilation from Inside Building

This fresh air would come from an adjoining unconfined space. When ventilation to an adjoining unconfined space, you must provide two permanent openings: one within 12” of the ceiling and one within 12” of the floor on the wall connecting the two spaces (see options 1 & 2 of fig. 2). Y ou can also remove door into adjoining room (see option3, fig 2). Follow the National Fuel Gas Code NFP A 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

12”

Ventilation Gills into Adjoining Room Option 1

Or remove door into Adjoining Room Option 3

Ventilation Gills into Adjoining Room Option 2

12”

Figure 2

WARNING: Rework worksheet, adding the sp ace of the adjoining unconfined space. The combined space

must have enough fresh air to supply all appliance in both spaces.

VENTILATION AIR

OUTLET AIR

INLET AIR

OUTLET AIR

234

VENTILATION CRA WL SP ACE

VENTILATED ATTIC

234

TO ATTIC

TO CRAWL SPACE

Figure 3.

Ventilation from Outdoors

If necessary provide extra fresh air by using ventilation grills or ducts. Connect these items directly to the outdoors or spaces open to the outdoors. These include attics* and crawl spaces. Follow the National Fuel Gas

4 Installation instructions and Owner’s Manual

Code NFP A 54/ ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

*IMPORTANT: Do not provide openings for inlet or outlet into attic. If attic has a thermostat-controlled power vent, heated air entering the attic will activate the power vent.

IMPORTANT: Vent-free heaters add moisture to the air. Although this is beneficial, inst alling heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Fresh Air for Combustion and Ventilation, p ages 3 through

INSTALLATION

NOTICE: This heater is intended for the use as supple-

mental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source for the duration of the outage.

WARNING: A qualified service person must inst all heater. Follow all local codes.

CHECK GAS TYPE

Use only LP-gas. If your gas supply is not LP-gas, do not install heater. Call dealer where you bought heater for proper type heater.

• In the coldest part of the room.

CAUTION: If you install the heater in a home garage:

• Heater pilot and burner must be at least 18

inches above floor.

• Locate heater where moving vehicle will not hit it.

CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces next to heater. Installing heater next to vinyl or cloth wall covering or operating heater where impurities (such as tobacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) are present in the air may discolor walls.

WARNING: Never install the heater:

• In a bathroom.

• In a bedroom

• In a recreational vehicle.

• Where curtains, furniture, clothing, or other

flammable objects are less than 36 inches from the front, top, or sides of the heater.

• As a fireplace insert

• In high-traffic areas

• In windy or drafty areas WARNING: Heater must be mounted to maintain the

minimum clearances shown in Figure 4. If possible, provide greater clearances from the floor, ceiling, and joining walls.

FOR PERMANENT INSTALLATION:

Before installing heater , make sure you have the items listed below:

• Piping (check local codes)

• Sealant (resistant to LP_Gas)

• Equipment shutoff valve*

• Ground joint union

• T est gauge connection*

• Sediment trap

• T ee joint

• Pipe wrench

*A CSA/AGA certified equipment shutoff valve with 1/8” NPT tap is an acceptable alternative to test gauge connection. Purchase a CSA/AGA certified equipment shutoff valve from your dealer . See Accessories, p age 17.

This heater may also be installed with the hose and regulator assembly included with heater.

LOCATING HEATER

This heater is designed to be mounted on the wall. For convenience and efficiency , install the heater:

• Where there is easy access for operation,

inspection, and service.

36” min. from

6” Min from adjoining walls

Left Side

Floor

2” min. to top surface of carpet, tile or other combustible material

ceiling

Right Side

Figure 4

FASTENING HEATER TO WALL Mounting Bracket

The mounting bracket in located on the back panel of heater (see figure 5). It has been taped there for shipping. Remove mounting bracket from back panel.

Installation instructions and Owner’s Manual

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