Procom ML300HGA manual

1 BLUE FLAME VENT-FREE PROP ANE/LP GAS GARAGE HEA TER OWNER ’ S OPERA TION AND INST ALLA TION MANU AL ML 300HGA ML 300T G A NON-THERMOST A T AND THERMOST A T MODEL Important Safety Information..................................... 2 Fresh Air for Combustion and V entilation ............... 4 Installation............................................[...]

2 IMPORT ANT SAFETY INFORMA TION Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids. 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible fo r use with other gases. 2. Do not place propane/LP supply tank(s) inside any [...]

3 PRODUCT FEA TURES SAFETY DEVICE A standard requirement for all vent-free room heaters. This heater has a pilot with an Oxygen Depletion Sensor(ODS) safety shutoff system. The ODS/pilot shuts off the heater if there is not enough fresh air. PIEZO IGNITION SYSTEM This heater is equipped with a piezo ignitor. This system requires no matches, batteri[...]

4 FRESH AIR FOR COMBUSTION AND VENTILA TION PRODUCING ADEQUA TE VENTILA TION The following are excerpts from National Fuel Gas Code. NFP A 54/ANS Z223.1, Section 5.3. Air for Combustion and V entilation. All spaces in homes fall into one of the three following ventilation classifications: 1. Unusually T ight Construction 2. Unconfined Space 3. Conf[...]

5 W ARNING: Rework worksheet, add- ing the space of the adjoining unconfined space. The combined spaces must have enough fresh air to supply all appliances in both spaces. VENTILA TION AIR V entilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must p[...]

6 VENTILA TION AIR V entilation Air From Outdoors Provide extra fresh air by using ventilation grills or duels: Y ou must provide two permanent openings: one within 12 " of the ceiling and one within 12 " of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces[...]

7 INST ALLA TION Figure 8 - Mounting Bracket Clearances Figure 7 - Removing Lower Front Panel Of Heater Figur 4 -Mounting Clearances As V iewed From Front Of Heater W ARNING: Maintain the minimum clearances shown in Figure 4. If you can, provide greater clearances from floor, ceiling, and joining wall. IMPORT ANT : V ent-free heaters add moisture t[...]

8 INST ALLA TION Figure 1 1 - Mounting Heater Onto Mounting Bracket Figure 9 - Folding Anchor Figure 10 - Popping Open Anchor Wing For Thin Walls Attaching Mounting Bracket T o W all Note: W all anchors, mounting screws, and spacers are in hardware package. The hardware package is provided with heater. Attaching T o Wall Stud Method For attaching m[...]

9 INST ALLA TION CONNECTING TO GAS SUPPL Y W ARNING: A qualified service person must connect heater to gas supply. Follow all local codes. W ARNING: This appliance requires a 3/8 " NPT (National Pipe Thread) inlet connection to the pressure regulator. CAUTION: Never connect heater directly to the propane/LP supply. This heater requires an exte[...]

10 Figure 15 -Equipment Shutoff V alve CHECKING GAS CONNECTIONS W ARNING: T est all gas piping and connections for leaks after installing or servicing. Correct all leaks at once. W ARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once. Pres[...]

1 1 Figure 17 - Control Knob in The OFF Position Figure 18 - Pilot  LIGHTING  INSTRUCTIONS 1. STOP! Read the safety information on the side of heater. 2. Check that gas supply to heater is on. 3. Push in gas control knob slightly and turn clockwise to the OFF position. NOTE : Knob cannot be turned from " PILOT " to " OFF "[...]

12 OPERA TING YOUR HEA TER NON-THERMOST A T MODEL ML300HGA  FOR YOUR SAFETY  READ BEFORE LIGHTING W ARNING: 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[...]

1 3 Figure 21 - Correct Pilot Flame Pattern Figure 22 - Incorrect Pilot Flame Pattern Figure 24 - Incorrect Burner Flame Pattern Figure 23 - Correct Burner Flame Pattern BURNER FLAME P A TTERN Figure 23 shows a correct burner flame pattern. Figure 24 shows an incorrect burner flame pattern. If pilot flame pattern is incorrect, as shown in Figure 24[...]

14 TROUBLESHOOTING Note : All troubleshooting items are listed in order of operation. W ARNING: Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit. OBSERVED PROBLEM When ignitor button is pressed in, there is no spark at ODS/pilot.[...]

1 5 TROUBLESHOOTING Continued OBSERVED PROBLEM Burner(s)does not light after ODS/pilot is lit. Delayed ignition of burner(s). Burner backfiring during combustion. Y ellow flame during burner combustion. Slight smoke or odor during initial operation. Heater produces a whistling noise when burner is lit. Heater produces a clicking/ticking noise just [...]

16 TROUBLESHOOTING Continued W ARNING: If you smell gas  Shut off gas supply .  Do not try to light any appliance.  Do not touch any 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,[...]

1 7 SPECIFICA TIONS Btu(available) Gas T ype Ignition Pressure Regulator Setting Inlet Gas Pressure* (inches of water) Maximum Minimum Dimensions, Inches (HxWxD) Heater Carton Weight (pounds) Heater Shipping ML300HGA 15,000/28,000 Propane/LP Only Piezo 8 " W.C. 14 " 11 " 23 1/2 × 26 5/8 × 8 26 1/2 × 28 1/2 × 91/4 26 31 ML300TGA 1[...]

18 ILLUSTRA TED P ARTS BREAKDOWN ML300TGA[...]

1 9 P ARTS LIST ML300TGA This list contains replaceable parts used in your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts 17 on page of this manual. KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24_1 24_2 25 26 27 ML300TGA P ART NO. MB10002 MB09001 MB1 1002 ML089-01 ML084-01 [...]

20 ILLUSTRA TED P ARTS BREAKDOWN ML300HGA[...]

2 1 P ARTS LIST ML300HGA This list contains replaceable parts used in your heater. When ordering replacement parts, follow the instructions listed under Replacement Parts on page 17 of this manual. KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 28-1 28-2 29 30 31 ML300HGA P ART NO. MB10003 MB09001 MB1 1002 ML089-[...]