Instruction/ maintenance manual of the product M42P(B,H) Desa
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For more information, visit www .desatech.com NA TURAL GAS MODELS M36(B,H), M42(B ,H), VM36(B,H) AND VM42(B,H) PROP ANE/LP GAS MODELS M36P(B,H), M42P(B ,H), VM36P(B,H) AND VM42P(B ,H) B-VENT DECORA TI.
www .desatech.com 108795-01V 2 W ARNING: Improper installation, adjustment, al - teration, service or maintenance can cause injury or property damage. Refer to this manual for correct in - stallation and operational procedures.
www .desatech.com 108795-01V 3 SAFETY 1. This appl ianc e is only for use with the typ e of gas indica ted on the rati ng pla te. This appl ian ce is n ot con ver tibl e for use wit h other gases unless a certied kit is used. 2. For propane/LP replace, do not place propane/LP supply tank(s) inside any structure.
www .desatech.com 108795-01V 4 1 1. K ee p t he a r ea a r ou n d yo u r fi r ep la c e clear of combustible materials, gasoline and other ammable vapor and liquids. Do not run fireplace where these are used or stored. Do not place items such as clothing or decorations on or around replace.
www .desatech.com 108795-01V 5 The insta llat ion must confo rm with local codes or , in the absence of local codes, with the cur - rent National Fuel Gas Code, ANSI Z223.
www .desatech.com 108795-01V 6 PRODUCT SPECIFICA TIONS GAS RA TING - NA TURAL M36(B,H),VM36(B,H) M42(B,H),VM42(B,H) Max. Input Rating: 40,000 Btu/Hr 45,000 Btu/Hr Manifold Pressure: 3.5" WC (.87 kPa) 3.5" WC (.87 kPa) Minimum Supply Pressure: 4.
www .desatech.com 108795-01V 7 PRE-INST ALLA TION PREP ARA TION Figure 3 - Minimum Clearances (T op V iew) 0" 0" Clearance Nailing Flange Front Face Left Side Surround Back Drywall 2 x 4 Stud Figure 4 - Minimum Clearances (Front V iew) * * * * 42" (106.
www .desatech.com 108795-01V 8 PRE-INST ALLA TION PREP ARA TION Continued FRAMING 1. Frame appliance enclosure as illustrated in Figures 7 and 8. Note: If a wall covering is used to line the enclosure, then all measurements must be from the surface of the covering.
www .desatech.com 108795-01V 9 INST ALLING TRANSITION PIPE AND ST ARTER COLLAR The transition pipe and starter collar shown in Figure 9 are supplied with the replace, unattached and ready for installation. Re - move starter collar and set aside. Slide transition pipe over vent collar and attach with a minimum of three screws.
www .desatech.com 108795-01V 10 Maintain Listed Clearance Maintain Listed Clearance 12' Min. 12' Min. 45° 45° 6' 8' 12' Min.
www .desatech.com 108795-01V 11 CHECKING FOR PROPER VENTING After completing and checking electrical, gas and vent connections, follow the lighting instructions and allow main burner to run for approximately 5 minutes.
www .desatech.com 108795-01V 12 Conduit Sleeve T o Safety Circuit Route Millivolt Through Gas Line T o T hermopile Wires (Supplied) W a ll Switch (Not Supplied) (Back View) IN TH TP THTP IN OU T O F F P I L O T O N Note: If any of the original wire as supplied must be replaced, use 1 8 AWG TYP E CL 2 (U L) 105 C (25 ft.
www .desatech.com 108795-01V 13 GAS LINE HOOK-UP W ARNING: Gas line hookup should be done by your gas supplier or a qualied service person. W ARNING: Before you pro- cee d, make sur e your gas supp ly is OFF .
www .desatech.com 108795-01V 14 P I L O T ON OFF IN OUT Figure 21 - Connecting Flexible Gas Line to Millivolt V alve Gas Shutoff V alve Flexible Gas Line Do NOT Kink 1/2" NPT Incoming Gas Line No.
www .desatech.com 108795-01V 15 0.5" 0.5" Figure 24 - Pan and Ember Material Clearances Grate Burner Pan Pan and Ember Material INST ALLA TION Continued LOGPLACEMENTFORM36,M36P , VM36 AND VM36P MODELS 1. Place small front right log (log 1) on right front of grate as shown in Figure 25.
www .desatech.com 108795-01V 16 INST ALLA TION Continued LOGPLACEMENTFORM42,M42P , VM42 AND VM42P MODELS 1. Place large back log (log 1) onto grate making sure notches rest over grate (see Figure 29). 2. Insert lower end of log 2A between rst two grate ngers and position upper end into notch on front of log 1.
www .desatech.com 108795-01V 17 INST ALLA TION Continued COMBUSTION AIR KIT MODEL AK4 (OPTIONAL) The outside air kit may be installed on the left sid e of repla ce onl y . The vent can be inst all ed through any outside wall a minimum of three feet below fireplace termination cap.
www .desatech.com 108795-01V 18 6. Repeat the process for the opposite door assembly . 7. T o adjust doors, slide them partially open. Using a screwdriver , loosen hold-down screws in the spring clip (see Figure 36) and pivot plate. 8. Close both doors until evenly joined at the middle and note the gap at outer edges of face.
www .desatech.com 108795-01V 19 OPERA TION 1. STOP! Read the safety information, col - umn 1. 2. T urn wall switch to the OFF position. 3. T urn off all electric power to appliance. 4. Fully open glass doors if installed. 5. Remove front refractory brick access panel.
www .desatech.com 108795-01V 20 TO TURN OFF GAS TO APPLIANCE 1. T urn off wall switch. 2. T urn off all electric power to appliance if service is to be performed. 3. Fully open glass doors if installed. 4. Remove front hearth brick and control access panel.
www .desatech.com 108795-01V 21 INSPECTING B URNERS Continued BURNER FLAME P A TTERN Burner ames will be steady , not lifting or oat - ing. Flames should go up through the middle of logset. Flames should not "spill" to edges of pan or sides of logset.
www .desatech.com 108795-01V 22 DO NO T CONNECT RED REPLACE F A CTOR Y WIRING WITH 105°C EQUI V A LENT OR HIGHER RA TING THERMOST A T WIRE 18 GA. RED/WHITE EXTERNA L WIRING USE ON L Y CLASS 2 N.C.SW (VEN T SAFET Y SHUTOFF SWITCH) WHITE TH/TP TP TH WA LL SWITCH (NOT SUPPLIED) MANUA L DAMPER SWITCH N.
www .desatech.com 108795-01V 23 TROUBLESHOO TING Note: Before troubleshooting the system, make sure the gas shutoff valve is ON. The two most common causes of a malfunctioning gas appliance are: 1.
www .desatech.com 108795-01V 24 TROUBLESHOO TING Continued OBSERVED PROBLEM Pilot goes out when wall switch is ON Spark ignitor will not light pilot after repeated triggering of red button Fireplace produces a clicking/ ticking noise just after burner is lit or shut off POSSIBLE CAUSE 1.
www .desatech.com 108795-01V 25 TROUBLESHOO TING Continued W ARNING:Ifyousmellgas • Shutoffgassupply . • Donottrytolightanyappliance. • Do not touch any electrical switch; do not use any phone in your building.
www .desatech.com 108795-01V 26 P ARTS MODELS M36(B,H),M36P(B,H),M42(B,H),M42P(B,H),VM36(B,H),VM36P(B,H), VM42(B,H) ANDVM42P(B,H) 43 21 1 10 1 1 6 8 8 22 25 13 4 14 45 17 3 44 .
www .desatech.com 108795-01V 27 P ARTS This list contains replaceable parts used in your heater . When ordering parts, follow the instructions listed under Replacement Parts on page 22 of this manual. KEY NO. M36(B,H) VM36(B,H) M42(B,H) VM42(B,H) DESCRIPTION QTY 1 14153 14153 Micro Switch 1 2 111 6 5 111 6 5 Screw , #10 x 5/8 Mod.
www .desatech.com 108795-01V 28 KEY NO. M36(B,H) VM36(B,H) M42(B,H) VM42(B,H) DESCRIPTION QTY 12 106658-02 107812-02 Left Refractory , Std. Brick (M36B/M42B) 1 108164-02 108169-02 Left Refractory , Herringbone (M36H/M42H) 1 106658-01 107812-01 Left Refractory , Std.
www .desatech.com 108795-01V 29 P ARTS LOGSETS FOR MODELS M36(B,H),M36P(B,H),VM36(B,H) ANDVM36P(B,H) KEY NO. P ART NUMBER DESCRIPTION QTY .
www .desatech.com 108795-01V 30 KEY NO. P ART NUMBER DESCRIPTION QTY . - 107999-02 Log Set 1 901098-02 Rear Log 1 2A 108723-01 Left Front Log - 1 1" 1 2B 108839-01 Right Front Log - 15 3 / 4 &quo.
www .desatech.com 108795-01V 31 ACCESSORIES NOTICE: Allaccessoriesmaynotbeavailableforallreplacemodels. Purc has e th ese access ori es f rom your local dealer . If th ey can not sup ply the se a cces sori es call DESA Heati ng, LLC at 1-866- 672- 604 0 for info rmat ion .
108795 01 108795-01 Rev . V 08/08 NOT A UPC DESA Heating, LLC 2701 Industrial Drive Bowling Green, KY 42101 www .desatech.com 1-866-672-6040 WARRANTY KEEP THIS WARRANTY Model ( located on product or identication tag ) _____________________________ Serial No.
An important point after buying a device Desa M42P(B,H) (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 M42P(B,H) 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 M42P(B,H) - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa M42P(B,H) you will learn all the available features of the product, as well as information on its operation. The information that you get Desa M42P(B,H) will certainly help you make a decision on the purchase.
If you already are a holder of Desa M42P(B,H), 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 M42P(B,H).
However, one of the most important roles played by the user manual is to help in solving problems with Desa M42P(B,H). Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa M42P(B,H) 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
