Depleted gas supply 5. ODS/pilot is clogged 6. Gas regulator setting is not correct 1. Turn on gas supply or open manual shutoff valve 2. Press in control knob while turning to PILOT/ IGN position 3. Continue holding down control knob. Repeat igniting operation until air is removed 4. Contact local propane gas company 5. Clean ODS/pilot (see CLEANING AND MAINTENANCE, page 17) or replace ODS/pilot assembly 6. Replace gas regulator ODS/pilot lights but flame goes out when control knob is released

Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. 1. Determine the volume of the space (length x width x height). Length x Width x Height = ___________________ cu. ft. (volume of space) Example: Space size 18 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2304 cu. ft. (volume of space) If additional ventilation to adjoining room is supplied with grills or openings, add the volume of thes

If installing bottom mounting screw into wall stud, drill hole at marked location using 9/64" drill bit. 5. Replace heater on wall. 6. Insert bottom anchor screw through back panel into bottom anchor or drilled hole (see Figure 11). 7. Tighten screw until heater is firmly secured to wall. Do not over tighten. Note:Do not replace front panel at this time. Replace front panel after making gas connections and checking for leaks (see pages 13-15). Figure 11 - Installing Bottom Mounting Screw CONNECT

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, people with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes. Natural Gas: Natural gas is odorless. An odor-making agent is added to natural gas. The odor helps you detect a natural gas leak. However, the odor added to natural gas can fade. Natural

CAUTION Do not try to adjust heating levels by using the manual shutoff valve. 18 OPERATING HEATER 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) 1. Turn control knob clockwise to the PILOT position. THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermostats. Standard therm

When calling DESA International, have ready • your name • your address • model number of your heater • how heater was malfunctioning • type of gas used (propane/LP or natural gas) • purchase date Usually, we will ask you to return the defective part to the factory. Parts Not Under Warranty Contact authorized dealers of this product. If they can’t supply original replacement part(s), either contact your nearest Parts Central (see below) or call DESA International’s Parts Department at 1-800-972-7

design-certified manual shutoff valve from your dealer. See Accessories, page 30. LOCATING HEATER This heater is designed to be mounted on a wall. WARNING Maintain the minimum clearances shown in Figure 4 (page 10). If you can, provide greater clearances from floor, ceiling, and joining wall. You can locate heater on floor, away from a wall. An optional floor mounting stand is needed. Purchase the floor mounting stand from your dealer. See Accessories, page 30. WARNING Never install the heater •

24 INSPECTING PILOT AND BURNER FLAME Continued Sharp Blue Flame Ragged Yellow Flame Flame Lifting Off of Burner Figure 22 - Incorrect Burner Flame Patterns If burner flame pattern is incorrect, as shown in Figure 22 • turn heater off (see To Turn Off Gas to Appliance, page 23) • see Troubleshooting, pages 27 through 31. Figure 21 - Correct Burner Flame Pattern 25 CLEANING AND MAINTENANCE 26 WARNING Turn off heater and let cool before cleaning or servicing. WARNING Keep heater clear and free from

10.5" W.C. 10.5" W.C. Inlet Gas Pressure Maximum 14" W.C. 14" W.C. 14" W.C. Minimum 11" W.C. 11" W.C. 11" W.C. Dimensions, Inches Heater (H x W x D) 25 x 27 1/4 x 16 27 x 32 1/2 x 16 31 x 37 3/4 x 16 Shipping Weight (pounds) 97 133**/120 158**/145 Flue Vent Size 4" dia. 4" dia. 5" dia. Orifice Size 52 drill, o .0635 46 drill, o .081 2.4 mm, o .0945 ** When equipped with blower Note: These heaters are certified for elevations of 0-4500 feet above sea level. For elevations above 2000 feet, de-rate

• We recommend you use flues classified as prefabricated or masonry all-fuel chimney or type-B vent. See Vent Types,page 10. • If using old vent, check vent for soot, creosote, and loose particles. If vent is damaged, repair or replace it before using heater. • Extend the vertical section of vent pipe at least three feet above roof penetration. • Extend the vertical section of vent pipe at least two feet above the highest point of any roof within ten feet. • The horizontal run of vent pipe shoul