Empire Comfort Systems CIVF-25-2 User Manual

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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. Installation and service must be performed by a qualified installer, service agency, or the gas supplier. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

FOR YOUR SAFETY: What to do if you smell gas:

Do not touch any electrical switches

Do not try to light any appliance.

Do not use the 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.







JULY, 2000

This is an unvented gas-firedheater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to page 4.

WARNING: If not installed, operated and maintained in accordance with the manufacturer's instructions, this product could expose you to substances in fuel or from fuel combustion which can cause death or serious illness.


Water vapor is a by-productof gas combustion. An unvented room heater produces approximately one (1) ounce (30ml) of water for every 1,000 BTU's (.3KW's) of gas input per hour. Refer to page 4.


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Always consult your local Building Department regarding regulations, codes or ordinances which apply to the installation of an unvented room heater.

This appliance may be installed in an aftermarket* permanently located, manufactured (mobile) home, where not prohibited by state or local codes.

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

This appliance is only for use with the type of gas indicated on the rating plate.

Instructions to Installer

1.Installer must leave instruction manual with owner after installation.

2.Installer must have owner fill out and mail warranty card supplied with unvented room heater.

3.Installer should show owner how to start and operate unvented room heater.


Any safety screen or guard removed for servicing an appliance must be replaced prior to operating the heater.

General Information

This CIVF-25is design certified in accordance with American National Standards InstituteZ21.11.2b-1998by the American Gas Associaton as an Unvented Room Heater and should be installed according to these instructions.

Attention: During initial use of ceramic log you will detect an odor as the ceramic log is cured. Also, during the curing process the ceramic log will burn with a yellow flame.

Any alteration of the original design, installed other than as shown in these instructions or use with a type of gas not shown on the rating plate is the responsibility of the person and company making the change.


All correspondence should refer to complete Model No., Serial No. and type of gas.

Notice: During initial firing of this unit, its paint will bake out, and smoke will occur. To prevent triggering of smoke alarms, ventilate the room in which the unit is installed.



• An unvented room heater having an input rating of more than

More frequent cleaning may be required due to excessive lint

10,000 Btu per hour shall not be installed in a bedroom or

from carpeting, bedding materials, etc. It is imperative that


control compartments, burners and circulating air passageways

• Due to high temperatures, the appliance should be located out

of the appliance be kept clean.


of traffic and away from furniture and draperies.

• DO make a periodic visual check of pilot and burners. Clean and

• Children and adults should be alerted to the hazard of high

replace damaged parts.


surface temperature and should stay away to avoid burns or

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

clothing ignition.

Immediately call a qualified service technician to inspect the

• Young children should be carefully supervised when they are

room heater and to replace any part of the control system and

any gas control which has been under water.

in the same room with the appliance.


• Do not place clothing or other flammable material on or near

• Due to high surface temperatures, keep children, clothing and

furniture away.

the appliance.


• Keep burner and control compartment clean.

• Under no circumstances should any solid fuels (wood, coal, paper

or cardboard etc.) be used in this appliance.

• Installation and repair should be done by a QUALIFIED

• The flow of combustion and ventilation air must not be obstructed

SERVICE PERSON. The appliance should be inspected before

in any way.

use and at least annually by a professional service person.





When used without adequate combustion and ventilation air,


heater may give off CARBON MONOXIDE, an odorless, poison-


ous gas.


Do not install heater until all necessary provisions are made


Early signs of carbon monoxide poisoning resemble the flu, with

for combustion and ventilation air. Consult the written in-


headache, dizziness and/or nausea. If you have these signs, heater

structions provided with the heater for information concern-


may not be working properly. Get fresh air at once! Have heater

ing combustion and ventilation air. In the absence of instruc-



tions, refer to the National Fuel Gas Code, ANSI Z223.1,


Some people — pregnant women, persons with heart or lung

Section 5.3 or applicable local codes.


disease, anemia, those under the influence of alcohol , those at high



altitudes — are more affected by carbon monoxide than others.

This heater is equipped with a PILOT LIGHT SAFETY SYS-

The pilot light safety system senses the depletion of oxygen at its

TEM designed to turn off the heater if not enough fresh air is


location. If this heater is installed in a structure having a high


vertical dimension, the possibility exists that the oxygen supply at

the higher levels will be less than that at the heater. In this type of


application, a fan to circulate the structure air will minimize this



If heater shuts off, do not relight until you provide fresh air.

effect. The use of this fan will also improve the comfort level in the

structure. When a fan is used to circulate air, it should be located

If heater keeps shutting off, have it serviced. Keep burner and

so that the air flow is not directed at the burner.

control compartment clean.


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Propane (LP-Gas)is a flammable gas which can cause fires and explosions. In its natural state, propane is odorless and colorless. You may not know all the following safety precautions 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. Someday when there may not be a minute to lose, everyone's safety will depend on knowing exactly what to do. If, after reading the following information, you feel you still need more information, please contact your gas supplier.


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!

Do not operate electric switches, light matches, use your phone. Do not do anything that could ignite the gas.

Get everyone out of the building, vehicle, trailer, or area. Do that IMMEDIATELY.

Close all gas tank or cylinder supply valves.

LP-Gasis 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 out until

firefighters declare them to be safe.

Use your neighbor's phone and call a trained LP-Gasservice person and the fire department. Even though you may not continue to smell gas, do not turn on the gas again. Do not reenter the building, vehicle, trailer, or area.

Finally, let the service man and firefighters check for escaped gas. Have them air out the area before you return. Properly trainedLP-Gasservice people should repair the leak, then check and relight the gas appliance for you.


Some people cannot smell well. Some people cannot smell the odor of the chemical stench put into the gas. You must find out if you can smell the odorant in propane. Smoking can decrease your ability to smell. Being around an odor for a time 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-gasis colorless, and it can fade under some circumstances.For example, if there is an underground leak, the movement of the gas through soil can filter the odorant. Odorants in LP-Gas also are subject to oxidation. This fading can

occur if there is rust inside the storage tank or in iron gas pipes.

The odorant in escaped gas can adsorb or absorb onto or into walls, masonry and other materials and fabrics in a room. That will take some of the odorant out of the gas, reducing its odor intensity.

LP-Gasmay 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. Immediately go into action as instructed earlier.


Learn to recognize the odor of 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 that your LP-Gas has a weak or abnormal odor, call your LP-Gas Dealer.

If you are not qualified, do not light pilot lights, perform service, or make adjustments to appliances on the LP-Gassystem. If you are qualified, consciously think about the odor ofLP-Gasprior to and while lighting pilot lights or performing service or making adjustments.

Sometimes a basement or a closed-uphouse has a musty smell that can cover up theLP-Gasodor. Do not try to light pilot lights, perform service, or make adjustments in an area where the conditions are such that you may not detect the odor if there has been a leak ofLP-Gas.

Odor fade, due to oxidation by rust or adsorption on walls of 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 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-gas is a good safety measure under any condition.

If, at any time, you do not smell the LP-Gasodorant and you think you should, assume you have a leak. Then take the same immediate action recommended above for the occasion when you do detect the odorizedLP-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.


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Input BTU/HR (KW/H) Max. (LP/NAT)

25,000 ( 7.3)


18,000 (5.3)

BTU/HR (KW/H) Min. Nat.

17,000 (5.0)



27 3/4" (70.5cm)



25 1/2" (64.8cm)



15 1/2" (39.4cm)

Gas Inlet


3/8" (9.5mm)

Stove Casting (Must be ordered with Firebox.)





Flat Black



Porcelain Black



Porcelain Green



Porcelain Sand



Porcelain Navy



Porcelain Red









750 Millivolt Wall Thermostat


Battery Operated Remote Control


Battery Operated Remote Control


with Thermostat



Electric Remote Control



Wall Switch



Automatic Blower


Stone Inlay Replaces Standard Grille Top


Stone Inlay

Empress Green


Stone Inlay

Hunan Jade


Stone Inlay

Gray Botticino


Stone Inlay



Stone Inlay



Stone Inlay

Black Swan

Qualified Installing Agency

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 installation or replacement of gas piping or (b) the connection, 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 authority having jurisdiction.

The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54.*

*Available from the American National Standards Institute, Inc., 11 West 42nd St.,

New York, N.Y. 10036.

Water Vapor: A By-Productof Unvented Room Heaters

Water vapor is a by-productof gas combustion. An unvented room heater produces approximately one (1) ounce (30ml) of water for every 1,000 BTU's (.3KW's) of gas input per hour.

Unvented room heaters are recommended as supplemental heat (a room) rather than a primary heat source (an entire house). In most supplemental heat applications, the water vapor does not create a problem. In most applications, the water vapor enhances the low humidity atmosphere experienced during cold weather.

The following steps will help insure that water vapor does not become a problem.

1.Be sure the heater is sized properly for the application, including ample combustion air and circulation air.

2.If high humidity is experienced, a dehumidifier may be used to help lower the water vapor content of the air.

3.Do not use an unvented room heater as the primary heat source.

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Provisions for Adequate Combustion and Ventilation Air

This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.

The National Fuel Gas Code, ANSI Z223.1defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8m3 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 (4.8m3 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.

The following example is for determining the volume of a typical area in which the CIVF-25may be located and for determining if this area fits the definition of an unconfined space.

The maximum input of the CIVF-25is 25,000 Btu per hour. Based on the 50 cubic feet per 1,000 Btu per hour formula, theminimum area that is an unconfined space for installation of theCIVF-25is 1,250 cubic feet, 50 cubic feet x 25 = 1,250 cubic feet. To determine the cubic feet of the area in which theCIVF-25is to be installed, measure the length, width and height of the area. Example: The area measures 16 feet in length, 10 feet in width and 8 feet in height, the area is 1,280 cubic feet. The CIVF25 can be installed in this unconfined space with no requirement to provide additional combustion and ventilation air.

Warning: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in theNational Fuel Gas Code, ANSI Z223.1, Section 5.3 or applicable local codes.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm or less with openings gasketed or sealed, and

b.Weatherstripping has been added on openable windows and doors, and

c.Caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceilingjoints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

If the CIVF-25heater is installed in a building of unusually tight construction, adequate air for combustion, ventilation and dilution of flue gases shall be provided in accordance with ANSI Z223.1/NFPA54.

Clearances (Figures 1, 2 and 3)

When facing the front of the appliance the following minimum clearances to combustible construction must be maintained.

Top of appliance (ceiling)



Rear Wall



Side Wall



Heater Corners (45° angle) to Wall






Provide adequate clearances around air openings.

Adequate accessibility clearances for purposes of servicing and proper operation must be provided.

Installation on Rugs and Vinyl

If this appliance is installed directly on carpeting, vinyl or other combustible material, other than wood flooring, the appliance shall be installed on a metal or wood panel extending the full width and depth of the appliance.


Figure 3

Figure 1

Figure 2


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Appliance Hardware Package (Figure 4)

Figure 4

Appliance Hardware Package Parts List









1/4-20x 1" Phillips Head Bolt



1/4-20x 3/8" Phillips Head Bolt



1/4-20x 1/2" Leveling Bolt



No. 10 x 1/2"



Hex Washer Head Screw






1/4-20Washer Head Nut



Leg Pad "A"

(see Figure 5)



Leg Pad "B"

(see Figure 5)



1-1/4"x 1/2" Retaining Tab



(see Figure 8)






1/4" x 9/32 Washer (Not Shown)







Assembly of Cast Iron (Outer Casing) Stove Casting (Figures 5, 6, 7, 8, and 9)

Attention: Included in the hardware package are (8) 1/4" inside diameter washers. A 1/4" washer may be used with a1/4-20x 3/8" bolt when assembling the stove casting parts. If a bolt hole is not tapped deep enough for a tight fit between stove casting parts, the 1/4" washer can be used as a shim to provide a tight fit.

The 1/4" washers are not required for assembly of the stove casting if all the bolt holes are tapped to a proper depth.

Additonal 1/4" washers are to be purchased locally.

1.Place porcelain casting pieces on a non-abrasivesurface in order to protect the porcelain finish. The exterior of the porcelain casting pieces should be facing thenon-abrasivesurface.

2.The assembly of the casting is accomplished in 6 stages:

A.Attaching legs to the sides (Figure 5).

B.Attaching rear cover to sides (Figure 6).

C.Removing protective packaging from casing front and window (Figure 7).

D.Assembly of front by attaching retaining tabs and placing front on unit (Figure 8).

E.Inserting firebox into partially completed assembly (Figure 9).

F.Placing top on unit.

3.Refer to Figure 5, the leg pads will have the letter "A" and "B" stamped into the metal. Place leg pad "A" and leg pad "B" at the bottom of each casing side. Leg pad "A" attaches to the front of the casing side, right and to the rear of the casing side, left. Leg pad "B" attaches to the rear of the casing side, right and to the front of the casing side, left. Position the 3/4" flange on the leg pad against the

(2) locator dimples on the casing side. The 3/4" flange must be facing upward, toward the top louver openings on the casing side. Attach the two rear leg pads to the casing sides with (2) 3/8" bolts. Attach but do not completely tighten the twofront leg pads to the casing sides with (2) 3/8" bolts.Attention: The front leg pads can be adjusted to provide a snug fit between the casing front and the casing sides.

4.Attach (4) leveling bolts to the bottom of the (4) legs.

5.Align the 3/8" hole at the top of the leg with the 3/8" hole in the leg pad. Attention: For proper positioning of the leg to the leg pad the

(2) 1-1/2"top edges of the leg must be placed flush and parallel to the (2) edges on the leg pad. Attach leg to leg pad by inserting (1) 1" bolt through the leg pad and into the leg, secure bolt with 1/4" nut.

6.Insert (2) 3/8" bolts into the (2) holes on the edges of the casing sides. The bolts should only be threaded half-wayinto the holes in order to allow for clearance when the casing back is attached to the casing sides.

7.Refer to Figure 6, the rear cover has (4) keyholes for attachment to the casing sides. Stand the casing sides on the floor with the (2) bolts attached half-wayinto the edges of the rear cover positioned at the rear. The large diameter holes in the keyholes of the rear cover will be toward the floor. Working with one casing side at a time, place the large diameter holes in the keyholes over and behind both of the bolts at the same time. Push downward on the rear cover to lock the keyholes into position behind the bolts. Finish tightening both bolts to secure rear cover to casing side. Repeat this procedure to secure rear cover to the second casing side.

8.Position the completed portion of the casing in the approximate location for installation as the completed assembly will be heavy.

9.Refer to Figure 7, removing protective packing foam from casing front and window. Remove the (1) 3/4" bolt and (1) 1/4" washer from top of window. Remove (1) 3/8" bolt and 1 - 5/8" x 3/4" retaining tab from bottom of window. Remove the window from casing front. Remove the protective sheet of foam from the casing front.

Place the window into the casing front. Attach the top of the window to the casing front with (1) 1/4" washer and (1) 3/4" bolt. Place the 1 -5/8"x 3/4" retaining tab into the locator notch on the bottom of the casing front. Attach the bottom of the window to the casing front by inserting (1) 3/8" bolt through retaining tab and into locator notch.

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Figure 5

Figure 6

10.Attach the (4) 1-1/4"x 1/2" retaining tabs to the casing front with (4) 3/8" bolts. The retaining tabs should be positioned downward, from the casing front, top to the casing front, bottom.

11.Refer to Figure 8, attach casing front to outer casing by using the

(4) retaining tabs on the casing front. The (2) top, retaining tabs on the casing front will be placed behind the (2) top, locator tabs on the front of the casing sides. The (2) bottom, retaining tabs will be inserted into the (2) 9/16" slots on the front, leg pads. Place the top, retaining tabs behind the top, locator tabs as you pivot inward the bottom of the casing front in order to insert the bottom, retaining tabs into the slots.

12.The following procedure will provide a snug fit between the casing front and the casing sides. Grasp the right, front leg, push inward on the leg in order to provide a snug fit between the casing front and the casing side. Continue to hold the right, front leg as you completely tighten the (2) 3/8" bolts that attach the leg pad to the right, casing side. Repeat procedure for left, front leg to achieve a snug fit between the casing front and the casing side.

13.Remove the casing front from the outer casing.

14.Refer to Figure 9, the appliance firebox can now be inserted into the outer casing. Center the firebox in the outer casing. Attention: Remove (1)Phillips-headscrew in the top of the valve cover. The screw is used to secure the valve cover in place during shipping. The (1)Phillips-headscrew can be discarded.

15.Attach casing front to outer casing as described in Step 11.

16.Place the casing top onto the outer casing. The casing top nests into the outer casing.

17.Insert center grille, left grille and right grille into casing top.

18.Level appliance by adjusting leveling bolts.

19.Assembly of cast iron (outer casing) stove casting is completed.


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Figure 7

Figure 8

Figure 9

Stone Inlay Replacement of Standard Grille Top

Whenever the standard grille top is replaced with a stone inlay you must install the top shield and heat shield, which are provided with the stone inlay.

Installation of Optional Stone Inlay

1.Remove left grille, center grille and right grille from casing top.

2.Remove casing top from outer casing.

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3.Place the casing top on a non-abrasivesurface in order to protect the porcelain finish. The exterior of the casing top should be facing thenon-abrasivesurface.

4.Attach 11 5/8" x 11 5/8" top shield to the interior of the casing top with (1) 3/8" bolt provided in hardware package.

5.Locate the (4) screw holes on the heat exchanger top. The screw holes are 8 3/4" apart. Position the angled front edge on the 12" x 19 3/8" heat shield with the front of the appliance. Align the (4) tabs with clearance holes on the 12" x 19 3/8" heat shield with the (4) screw holes on the heat exchanger top. Attach the 12" x 19 3/8" heat shield to the heat exchanger top with (4) 1/2" hex-headscrews provided in hardware package.

6.Place the casing top onto the outer casing. The casing top nests into the outer casing.

7.Insert center stone inlay, left stone inlay and right stone inlay into casing top.

8.Installation of stone inlay is completed.

Parts List










11 5/8" x 11 5/8" Top Shield



12" x 19 3/8" Heat Shield



3/8" Bolt



1/2" Hex-HeadScrew



Installation of Wire Channel Assembly (Figure 10)

The ON/OFF/REMOTE switch with harness is factory installed into the switch box.

After the appliance housing is installed into the cast iron outer casing the wire channel can be installed.

1.Attach switch box on the left side of casing back with (2) 10 x 1/2" provided screws.

2.Route wires from ON/OFF/REMOTE switch within wire channel.

3.Attach wire channel on the left side of the casing back with (4) 10 x 1/2" provided screws.

4.Attach the black and green (wires) female push-onsto the TH/TP and TH (two outside male tabs) terminals on gas valve.

Figure 10

Gas Supply (Figure 11)

Check all local codes for requirements, especially for the size and type of gas supply line required.


Recommended Gas Pipe Diameter

Pipe Length

Schedule 40 Pipe

Tubing, Type L


Inside Diameter

Outside Diameter












1.3 cm

1.0 cm

1.3 cm

1.0 cm












1.3 cm

1.3 cm

1.6 cm

1.3 cm







1.3 cm

1.3 cm

1.9 cm

1.3 cm







1.9 cm

1.3 cm

2.2 cm

1.9 cm

Note: Never use plastic pipe. Check to confirm whether your local codes allow copper tubing or galvanized.

Note: Since some municipalities have additional local codes, it is always best to consult your local authority and installation code.

Installing a New Main Gas Cock

Each appliance should have its own manual gas cock.

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 installation or relocation.

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, and if unexposed, a pressure test should be made.

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 appliance connected; control valve will sustain damage!

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.

Figure 11

Method of Installing a Tee Fitting Sediment Trap

The use of the following gas connectors is recommended:

ANS Z21.24 Appliance Connectors of Corrugated Metal Tubing and Fittings

ANS Z21.45 Assembled Flexible Appliance Connectors of Other Than All-MetalConstruction

The above connectors may be used if acceptable by the authority having jurisdiction.

Pressure Testing of the Gas Supply System

1.To check the inlet pressure to the gas valve, a 1/8" (3mm) N.P.T. plugged tapping, accessible for test gauge connection, must be placed immediately upstream of the gas supply connection to the appliance.

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2.The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).

3.The appliance must be isolated from the gas supply piping system by closing its equipment shutoff 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).

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, it will result in a hazardous condition.

Checking Manifold Pressure

Natural gas will have a manifold pressure of approximately 3.5" w.c. (.871kPa) for maximum input or 1.7" w.c. (.423kPa) for minimum input at the pressure regulator outlet with the inlet pressure to the pressure regulator from a minimum of 5.0" w.c. (1.245kPa) for the purpose of input adjustment to a maximum of 10.5" w.c. (2.614kPa). Propane gas will have a manifold pressure approximately 10.0"w.c. (2.49kPa) for maximum input or 6.3"w.c. (1.568kPa) for minimum input at the pressure regulator outlet with the inlet pressure to the pressure regulator from a minimum of 11.0"w.c. (2.739kPa) for the purpose of input adjustment to a maximum of 13.0"w.c. (3.237kPa).

NOTE: 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.

A test gauge connection is located downstream of the gas appliance pressure regulator for measuring gas pressure. The connection is a 1/8 inch 3mm) N.P.T. plugged tapping.

High Altitudes

For altitudes/elevations above 2,000 feet (610m), ratings should be reduced at the rate of 4 percent for each 1,000 feet (305m) above sea level. Contact the manufacturer or your gas company before changing spud/orifice size.

Keep appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids.

Pilot Flame Pattern (Figure 12 and Figure 13)

Figure 12 shows a correct pilot flame pattern. The correct flame will be blue and will extend beyond the thermocouple and thermopile. The flame will surround the thermocouple and thermopile just below the tip. A slight yellow flame may occur where the pilot flame and main burner flame meet. Figure 13 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple or thermopile. This will cause the thermocouple or thermopile to cool. When the thermocouple cools, the heater will shut down.

Correct Pilot Flame Pattern

Figure 12

Incorrect Pilot Flame Pattern

Figure 13

If pilot flame pattern is incorrect, as shown in Figure 13

See Troubleshooting, page 15.

Cleaning and Maintenance/Pilot Oxygen Depletion Sensor Pilot (Figure 14)

When the pilot has a large yellow tip flame, clean the Oxygen Depletion Sensor as follows:

1.Clean the ODS pilot by loosening nut B from the pilot tubing. When this procedure is required, grasp nut A with an open wrench.

2.Blow air pressure through the holes indicated by the arrows. This will blow out foreign materials such as dust, lint and spider webs. Tighten nut B also by grasping nut A.

Figure 14

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