Instruction/ maintenance manual of the product MVO18VPA Desa
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Sav e this manual for future reference. For more information, visit www .desatech.com W ARNING: If the information in this manual is not fol- lowed exactly , a fire or explosion may result causing property damage, personal injury or loss of life.
www .desatech.com 1 14924-01B 2 W ARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer , service agency or the gas supplier .
www .desatech.com 1 14924-01B 3 SAFETY INFORMA TION W ARN ING : Th is pro duc t co n- ta ins an d/o r gen era tes c he mic als kno wn t o the Sta te o f Cal ifo rni a to cause c anc er or b irt h def ect s or oth er rep rod uct ive ha rm. W ARNING: Keep flue open when operating unit.
www .desatech.com 1 14924-01B 4 Y o u m u s t op er at e t h i s ap pl ia nc e w i t h a fir ep la ce s c r e e n i n pl ac e. Mak e su re firep lace sc ree n is c l o s e d b e f o r e r u n n i n g a p p l i a n c e . Keep the appliance area clear and free from combustible ma - terials, gasoline and other flam - mable vapors and liquids.
www .desatech.com 1 14924-01B 5 PRODUCT IDENTIFICA TION W A R N IN G: Fa il ur e t o po s it io n t h e pa rt s in a cc or da n c e wi th t he s e d ia gr am s or fa il u r e to us e o n l y p ar ts sp e ci fic al ly ap pr ov ed wi th t hi s a pp l i a nc e m ay r es ul t i n pr op - e rt y da ma g e o r pe rs o n al i nj ur y .
www .desatech.com 1 14924-01B 6 CHECK GAS TYPE Use the cor rec t gas type (na tur al or propa ne /LP ) for your unit. If your gas supply is not correct, do not instal in fireplace. Call dealer where you bought the appliance for proper type of appliance.
www .desatech.com 1 14924-01B 7 INST ALLA TION Continued INST ALLING APPLIANCE W ARNING: Special care is required if you are installing the unit into a sunken fireplace. Y ou must raise the fireplace floor to allow access to gas log cont rols. Thi s wil l ins ure ade quate air flow and guard against sooting.
www .desatech.com 1 14924-01B 8 CA U T I O N : U s e o n l y ne w , b l a ck i r o n or st ee l p i p e. In te rn al ly -t in ne d co ppe r tu bi ng may b e use d in ce rta in are as. C he ck you r lo ca l co des . Us e p ipe o f 1/ 2" di ame ter or gr ea ter t o all ow pro per ga s vol - um e t o he at er .
www .desatech.com 1 14924-01B 9 INST ALLA TION Continued 3. Pr essu riz e su ppl y pi pin g sy ste m by ei ther opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air .
www .desatech.com 1 14924-01B 10 INST ALLA TION Continued Figure 1 1 - Placement of Embers OPERA TING APPLIANCE FOR YOUR SAFETY READ BEFORE LIGHTING W ARNING: Keep flue open when operating unit. W ARNING: If you do not fol- low these instructions exactly , a fire or explosion may result causing property damage, per- sonal injury or loss of life.
www .desatech.com 1 14924-01B 1 1 10. W ait one minute and move switch to the ON positi on to light burne r . Note : AUT O is onl y fun ctio nal when usin g option al rem ote cont ro l a cces sory . 1 1. Set flame adjustment knob to any level between HI and LO.
www .desatech.com 1 14924-01B 12 Figure 15 - Correct Pilot Flame Pattern (Y our pilot may vary from pilots shown) Figure 16 - Incorrect Pilot Flame Pattern (Y our pilot may vary from pilots shown) Thermocouple Thermocouple INSPECTING B URNERS Check pilot flame pattern and burner flame pat- terns often.
www .desatech.com 1 14924-01B 13 TROUBLESHOO TING W ARNING: T urn off appliance and let cool before servicing. 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.
www .desatech.com 1 14924-01B 14 OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is re - leased Burner does not light after ODS/ pilot is lit Delayed ignition of burner Burner backfiring during com- bustion REMEDY 1. Press in control knob fully 2.
www .desatech.com 1 14924-01B 15 OBSERVED PROBLEM Dark orange flame in burner dur- ing burner combustion Slig ht smoke or odor during in itia l operation Produces a whistling noise when burners are lit White powder residue forming within burner box or on adjacent walls or furniture REMEDY 1 .
www .desatech.com 1 14924-01B 16 OBSERVED PROBLEM Appliance produces a clicking/ ticking noise just after burners are lit or shut off Appliance produces unwanted odors Appliance shuts off in use Gas odor even when control knob is in OFF position Gas odor during combustion REMEDY 1.
www .desatech.com 1 14924-01B 17 Purchase these appliances from your local dealer . If they can not supply thes e acce ssor ies, call DESA at 1-866-672-6040 for referral information. Y ou can also write to the address listed on the back page of this manual.
www .desatech.com 1 14924-01B 18 ILL USTRA TED P ARTS BREAKDOWN MVO24VNA, MVO24VP A MVO18VNA, MVO18VP A 1 2 3 4 5 6 17 16 15 7 8 9 10 1 1 12 14 13.
www .desatech.com 1 14924-01B 19 P ARTS LIST This list contains replaceable parts used in your heater . When ordering parts, follow the instructions listed under Replacement Parts on page 17 of this manual. KEY P ART NUMBER NO. MVO24VNA MVO24VP A MVO18VNA MVO18VP A DESCRIPTION QTY .
NOT A UPC 1 14924-01 Rev . B 01/05 114924 01 2701 Industrial Drive P .O. Box 90004 Bowling Green, KY 42102-9004 www .desatech.com Model Serial No. Date Purchased WARRANTY INFORMA TION KEEP THIS WARRANTY Always specify model and serial numbers when communicating with the factory .
An important point after buying a device Desa MVO18VPA (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa MVO18VPA yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa MVO18VPA - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa MVO18VPA you will learn all the available features of the product, as well as information on its operation. The information that you get Desa MVO18VPA will certainly help you make a decision on the purchase.
If you already are a holder of Desa MVO18VPA, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa MVO18VPA.
However, one of the most important roles played by the user manual is to help in solving problems with Desa MVO18VPA. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa MVO18VPA along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
