VENT-FREE GAS WALL HEATER OWNER’S OPERATION AND INSTALLATION MANUAL BLUE FLAME MODELS MNSD300HGA MNSD300TGA PFS ® US 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 v icinity of this or any other appliance. — WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance.
TABLE OF CONTENTS Safety......................................................... 3 Specifications............................................. 4 Qualified Installing Agency......................... 5 Product Features........................................ 5 Local Codes............................................... 5 Air For Combustion and Ventilation............ 6 Product Identification.................................. 6 Unpacking..................................................
SAFETY 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. Only a qualified installer, service agent, or local gas supplier may install and service this product. WARNING: Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.
SAFETY 1. Do not place Propane/LP supply tank(s) inside any structure. Propane/LP supply tank(s) must be placed outdoors. 2. Heaters with a maximum input over 6,000 Btu/Hr shall not be installed in a bathroom. Heaters with a maximum input over 10,000 Btu/Hr shall not be installed in a bedroom. 3. This heater needs fresh air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available.
QUALIFIED INSTALLING AGENCY Only a qualified agency should install and replace gas piping, gas utilization equipment or accessories, and repair and equipment servicing.
PRODUCT IDENTIFICATION Ignitor Button Control Knob Grill Front Panel Heater Burner Cabinet Figure 1 - Vent-Free Gas Heater UNPACKING 1. Remove heater from carton. 2. Remove all protective packaging applied to heater for shipping 3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you bought heater. WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS Water vapor is a by-product of gas combustion.
AIR FOR COMBUSTION AND VENTILATION While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper combustion and ventilation. Exhaust fans, fireplaces, clothes dryers and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances.
INSTALLATION NOTICE: This heater is intended for use as supplemental 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.
INSTALLATION You will notice a color coded plunger on the inside of the regulator. This is normal. When the inlet connection fitting is inserted and tightened, this plunger will be pushed back by the fitting making all of the adjustments for the gas being supplied. DO NOT REMOVE THE PLUNGER. The regulator will not work. The inlet regulator is color coded for identification of the correct gas type. Blue is for propane (LP gas) and yellow is for natural gas. INLET GAS PRESSURE MAX 1/2 PSIG (3.
INSTALLATION 2. Remove the metal cap installed over the NG regulator inlet. Metal Cap 3. Install metal cap over LP/Propane regulator inlet. This will keep debris out of regulator. DO NOT REMOVE Metal Cap Yellow Natural Gas Plunger Install Gas Fitting Here Use only the cap supplied on the regulator. Do not use an off the shelf pipe plug. This can damage the plunger. The supplied regulator cap is designed so it will not engage the unused gas type. 4.
INSTALLATION LOCATING HEATER This heater is designed to be mounted on a wall. For convenience and efficiency, install heater: 1. Where there is easy access for operation, inspection, and service. 2. In the coldest part of room. FASTENING HEATER TO WALL Mounting Bracket The mounting bracket is located on back panel of heater (see Figure 7). It has been taped there for shipping. Remove mounting bracket from back panel. Mounting Bracket Figure 7 - Mounting Bracket Location Removing Front Panel of Heater 1.
INSTALLATION Attaching Mounting Bracket To Wall Note: Wall anchors, mounting screws, and spacers are in hardware package. The hardware package is provided with heater. Attaching to Wall Stud Method For attaching mounting bracket to wall studs: 1. Drill holes at marked locations using 9/64" drill bit. 2. Place mounting bracket onto wall. Line up last hole on each end of bracket with holes drilled in wall. 3. Insert mounting screws through bracket and into wall studs. 4.
INSTALLATION 6. Replace heater onto mounting bracket. 7. Place spacers between bottom mounting holes and wall anchor or drilled hole. 8. Hold spacer in place with one hand. With other hand, insert mounting screw though bottom mounting hole and spacer. Place tip of screw in opening of wall anchor or drilled hole. 9. Tighten both screws until heater is firmly secured to wall. Do not over tighten. Note: Do not replace front panel at this time.
INSTALLATION Typical Inlet Pipe Diameters Use 3/8" black iron pipe or greater. Installation must include an equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 14). IMPORTANT: Install an equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance. Apply pipe joint sealant lightly to male threads.
INSTALLATION CHECKING GAS CONNECTIONS WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. If bubbles form, there is a leak. Correct all leaks at once. 3. Check all joints from gas meter (natural gas installations, see Figure 17) or from propane/LP tank (propane/LP gas installations, see Figure 18) to equipment shutoff valve.
OPERATION FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
OPERATION Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety interlock system. Wait one (1) minute before lighting pilot again. 8. Turn control knob counterclockwise to desired heating level. The main burner should light. Set control knob to any heat level between HI and LOW. CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve. TO TURN OFF GAS TO APPLIANCE Shutting Off Heater Turn control knob clockwise OFF position.
OPERATION TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise to the OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shutting off burner only (pilot stays lit) Turn control knob clockwise to the PILOT position. MANUAL LIGHTING PROCEDURE (ALL MODELS) 1. Remove lower front panel. 2. Follow steps 1 through 5 under Lighting Instructions, page 16 or 17. 3. With control knob pressed in, strike match. Hold match to pilot until pilot lights.
INSPECTING HEATER Notice: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame. BURNER FLAME PATTERN Figure 24 shows a correct burner flame pattern. Figure 25 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the heat shield height.
CARE AND MAINTENANCE CLEANING BURNER PILOT AIR INLET HOLE The primary air inlet hole allows the proper amount of air to mix with the gas. This provides a clean burning flame. Keep this hole clear of dust, dirt and lint. Clean this air inlet hole prior to each heating season. A blocked air hole will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person.
TROUBLESHOOTING Problem Possible Cause Corrective Action Using natural gas and pilot will not light. Inlet pressure exceeds 9.5" WC. Bypass pressure switch. See instructions below. Problem The entire gas delivery piping including connections inside the heater should be leak tested by the qualified installer. After leak testing the qualified installer should light the appliance. Refer to the correct flame pattern as illustrated on page 23. All flame patterns should be safely inside the product.
TROUBLESHOOTING Problem Possible Cause Corrective Action When ignitor button is 1. Gas supply is turned off or 1. Turn on gas supply or open pressed in there is a equipment shutoff valve is equipment shutoff valve. spark at ODS/pilot but closed. no ignition. 2. C o n t r o l k n o b n o t f u l l y 2. Fully press in control knob pressed in while pressing while pressing ignitor button. ignitor button. 3. Air in gas lines when in- 3. Continue holding down constalled. trol knob.
TROUBLESHOOTING Problem Possible Cause Corrective Action Burner backfiring during 1. Burner orifice is clogged or 1. Clean burner orifice (see combustion damaged. Care and Maintenance, page 19). 2. Burner is damaged. 2. Contact customer service. 3. Gas regulator is damaged. 3. Replace gas regulator. High yellow flame during 1. Not enough air. burner combustion 1. Check burner for dirt and debris. If found, clean burner (see Care and Maintenance, page 19). 2. Gas regulator is defective. 2.
TROUBLESHOOTING Problem Possible Cause Corrective Action Heater produces un- 1. Heater is burning vapors from 1. Ventilate room. Stop using wanted odors. paint, hair spray, glues, etc. odor causing products while See IMPORTANT statement, heater is running. page 20. 2. Gas leak. See Warning State- 2. Locate and correct all leaks ment on of page 20. (see Checking Gas Connections, page 15). 3 Low fuel supply. 3. Refill supply tank (Propane/ LP models). Heater shuts off in use 1.
REPLACEMENT PARTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement parts, call Customer Service toll free at 1-866-573-0674 for referral information.
PARTS MODEL MNSD300HGA 15 1 2 13 14 10 3 9 4 12 5 6 11 17 7 16 8 26 www.usaprocom.
PARTS MODEL MNSD300HGA This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 25 of this manual.
PARTS MODEL MNSD300TGA 16 1 2 15 13 3 14 9 4 12 5 11 6 10 17 7 8 28 www.usaprocom.
PARTS MODEL MNSD300TGA This list contains replaceable parts for your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 25 of this manual.
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WARRANTY KEEP THIS WARRANTY Model ________________________________ Serial No. _____________________________ Date Purchased ________________________ Keep receipt for warranty verification. REGISTER YOUR PRODUCT AT WWW.USAPROCOM.COM IMPORTANT: We urge you to register your product within 10 days of date of installation, complete with entire serial number which can be found on the rating plate. Please fill out the warranty information above for your personal records. Retain this manual for future reference.
