10. While pushing down gently on the top of the stabiliser shroud,install the 3 stainless steel 2" screws provided with the kit tosecure the back of the shroud to the wall. Do not overtighten thescrews or it will distort the stabiliser shroud. The screws will notbe necessary in a concrete or block wall as the mortar canprovide positive positioning.11. Tighten the clamp on the wall plate to secure the terminal inposition.12. Apply more caulking all around the seam where the stabilisershroud meets the wall. It is important to have a good seal toprevent water from entering the dwelling (see figure #1.14). Aconsiderable amount of caulking may be necessary for irregularwall surfaces such as lapped siding.13. Install the end cone and replace the two mounting screws.14. Support the vent and intake air piping so that a 114" to 1/2"downward slope (toward the outside) resultsforproperdrainageout the terminal body.Connection of combustion air piping to the terminal - DV-2000TM:Refer to Part 1, section 5.3, Outdoor Combustion Air - Side-wallVenting, DV-2000 TM for a complete description.5) AIR FOR COMBUSTIONPoison carbon monoxide gas hazard.Comply with ANSI/NFPA (in U.S.) or CSA (inCanada) standard for the installation of Oil BurningEquipment and applicable provision of localbuilding codes to provide combustion andventilation air.Failure to provide adequate combustion andventilation air can result in personal injury and/ordeath.5.1) General:Oil furnaces must have an adequate supply of combustion air. It iscommon practice to assume that older homes have sufficientinfiltration to accommodate the combustion air requirement for thefurnace. However, home improvements such as new windows,dcors,and weather stripping have dramatically reduced the volume of airleakage into the home.Home air exhausters are common. Bathroom and kitchen fans, powervented clothes dryers, and water heaters all tend to create a negativepressure in the home. Should this occur, the chimney become lessand less effective and can easily downdraft.Heat recovery ventilation (HRV) systems are gaining in popularity. TheHRVs are not designed to supply combustion air. If not properlybalanced, a serious negative pressure condition could develop in thedwelling.5.2) Contaminated Combustion Air :Installation in certain areas or types of structures will increase theexposure to chemicals or Halogens which may harm the furnace.12These instances will require that only outside air for combustion.The following areas or types of structures may contain or haveexposure to the substances listed below. The installation must beevaluated carefully as it may be necessary to provide outside air forcombustion.a. Commercial building.b. Building with indoor pools.c. Furnaces installed near chemical storage areas.Exposure to these substances:a. Permanent wave solutions for hair.b. Chlorinated waxes and cleaners.c. Chlorine based swimming pool chemicals.d. Water softening chemicals.e. De-icing salts or chemicals.f. Carbon tetrachloride.g. Halogen type refrigerants.h. Cleaning solvent (such as perchloroethylene).i. Printing inks, paint removers, varnishes, etc..j. Hydrochloric acid.k. Solvent cements and glues.I. Antistatic fabric softeners for clothes dryers.m Masonery acid washing materials.5.3) Ducted outdoor combustion air:Three burners are set up to duct outside combustion air directly to theburner; the Beckett AFII and Riello 40-BF for side-wall venting usingthe new DV -2000 TM venting system, and the Beckett AFG for use withconventional chimney venting. The Riello 40-F is not suitable fordirect-connected outdoor air.CAUTIONThe use of ducted outside combustion air is mandatoryfor the DV-2000 TM venting system. This systemoperates on a balanced flue principle and will notfunction properly if the combustion air piping is notattached and sealed at all connections between thevent terminal and burner inlet.Outdoor combustion air kit - chimney venting:The following kit has been certified for use on the appliance. Thecomponent kits contain an important safety feature, namely a vacuumrelief valve, or VRV. During normal operation the burner aspiratesoutdoor air. If the intake terminal ever becomes partially blocked orfully blocked from ice or snow etc., the VRV will open to allow aproportion of air from the dwelling to enter the burner thus maintainingproper combustion. Once the blockage is removed, the V RVwill doseand the burner will draw all air from the outdoors again:CAS-2B Components (except air duct) for the Beckett AFG burner.The kit includes the intake terminal, vacuum relief valve (VRV) andspecial air boot connection with integral air adjustment means for theAFG burner. The CAS-2B can be used with 4" galvanised air duct orwith 4" flexible aluminium air duct. It is recommended that the metallicair ducting material should be insulated from the air intake up to 5 feetfrom the burner to avoid condensation on the outside of the intakepipe.CAD-1 Air duct kit consists of 25 feet of insulated UL/ULC ListedClass 1 air duct, and two 4" steel band clamps. The duct incorporatesa corrugated flexible aluminium core, surrounded by fibreglassinsulation covered with a vinyl vapour barrier.