Installation | Tempest® 4442 Burner
REFRACTORY WALL INSTALLATION 1. If the burner/tile is supported by a metal shelf fastened to the inside of the furnace wall, flanged burners may be bolted directly to the furnace shell. 2. If the burner/tile is not supported by a metal shelf, but sits on a refractory wall that will shift in relation to the furnace shell as the furnace expands, do not bolt the burner to the shell, but allow it to move with the wall otherwise the tile will shear. Note : The opening for the burner in the furnace shell must provide sufficient clearance to accommodate both the lateral and vertical movement of the burner as the wall shifts. 3.The burner/tile mounting assembly may be installed in the furnace wall with or without cement. However, if the burner is not cemented, pack any openings at the top or sides of the burner with refractory fiber to prevent cold air infiltration cre- ated by the high velocity of the Tempest® burner. Note : The Tempest® burner/tile must rest on a hard surface. Use cement between the burner and this surface to provide uniform support and to seal against air leakage. FIBER WALL INSTALLATION 4.Burners must be bolted directly to the furnace shell for sup- port. (The 4442-—-F flanged version is required.) 5. Burner/tiles must either be supported on a steel shelf fastened to the inside of the furnace shell, or with an optional burner/ tile jacket which must be specified when ordering the burner. GENERAL 6. Do not install the burner mounting in the furnace wall beyond it's mounting ears. 7. If a Tempest® burner is installed in a wall thicker than 16", it's discharge velocity will diminish significantly unless the wall opening is enlarged accordingly. 8.Individual 7216 or 7218 Air/Gas Ratio Regulators should be installed on each burner.
9.The limiting orifice gas valve should be installed as close to the burner as possible, preferably mounted on a short nipple. 10. All other controls should be located as close to the burner as is practical. 11. Always install flexible air and gas connections at the burner to prevent damage from expansion of the furnace and the piping.
ACCESSORIES AND REPLACEMENT PART INFORMATION
1. Pressure Taps All burner pressure taps are 1⁄8 " fpt, and identified by the fol- lowing codes: UA = upstream air, DA = downstream air, UG = upstream gas, DG = downstream gas. The pressure tap locations on 4442-5, -6 and -7 are different from the illustra- tion shown on page 4. 4442-0 and 4442-4-S burners do not have an integral air orifice. For pressure tap valves and hose connectors, order 4442-PK (one set per burner) . 2. Replacement Parts Gasket: The 4442 gasket is more than a sealing device be- tween the body and mounting. It performs an integral function in the burner’s operation. As such, it canno t be replaced with fiber rope or a homemade gasket. Because the gasket cannot be reused if the burner is taken apart for maintenance, it is essential that you keep spare gaskets in stock. Always install a new gasket! Tiles: 4442 tiles seldom need replacement, but do require special consideration. It takes a considerable amount of mortar to assemble the burner mounting and tile. As the mortar contains a significant amount of water, it requires (7) days to dry or it could form steam and create a passage for leakage of furnace gases. To avoid this problem, there are three choices: a) Cement a new tile into the mounting and air dry for seven days before installing in the furnace. b) Return the mounting to North American for installation of a new tile. There will be a charge in addition to the cost of the tile. Con- tact your local Noth American office for return procedure. c) Purchase a new mounting plate and tile assembly. We recom- mend that you keep a spare in stock.
Bulletin 4442 Page 10
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