User manual FIELD CONTROLS 02702600

[. . . ] BAROMETRIC DRAFT CONTROLS Model: 4"-7" RC WARNING: Read the installation instructions carefully and completely before proceeding with the installation. ITEMS INCLUDED: Barometric Draft Control WHEN SHIPPED WITH A COLLAR ADDITIONAL ITEMS: Mounting straps, Collar, Mounting Hardware GENERAL INFORMATION BAROMETRIC DRAFT CONTROLS WITH OR WITHOUT COLLAR The Field RC is furnished as standard equipment on many leading brands of oil fired heating equipment. It is calibrated to allow for easy adjustment to the furnace or boiler manufactures specifications. [. . . ] 8. Figure 2 If flue pipe is made of material too heavy to bend out into collar, make the diameter of the opening within ½" of the inside diameter of the collar. Seal with high temperature RTV silicone or high temperature foil tape UL listed for the temperature of the application. For proper settings and operation of the burner and the draft combustion testing instrumentation and draft gauges must be used. INSTALLATION AND ADJUSTMENT NOTE: See sections on control locations and collar installation. The pivot points must be level whether the control is on a horizontal, vertical, or sloping flue pipe. If the collar is not supplied by Field, the control may be held in place by small bolts or sheet metal screws so located as not to interfere with the movement of the gate. When a sheet metal TEE is used instead of the collar, the B dimension must not be less than indicated for proper operation. The "B" dimension prevents the damper gate from obstructing the flue passage way. VERTICAL FLUES The control is shipped for installation in a vertical flue. The adjustment weight should be in the right hand slot when you face the control. (See Figure 3) HORIZONTAL FLUES For horizontal flues, remove the weight from the right hand slot and attach it to the left hand slot as shown in Figure 3. ADJUSTING THE CONTROL The burner must be running when the adjustment of the control is made. The use of a draft gauge is required to accurately set the over fire draft. Set the over fire draft according to the appliance manufactures installation instructions. Table 1 RC SIZE 4 5 6 7 B-DIMENSION 2 1/2 in. 2 5/8 in. Set the control to maintain as low a draft as will give good combustion and Figure 3 meet the requirements for heat. Turn the adjustment weight counter-clockwise to loosen, then slide in slot to the proper position and tighten. The bracket is marked 2, 4, 6 and 8, which indicates draft settings of . 02", . 04", etc. [. . . ] Usually a draft of -. 06" will be sufficient for cold weather, with reasonably quick pickup after a banked period. In mild weather when less heat is needed, or the fire is to be banked, close ash pit draft door partly or entirely. If desired, a check damper also can be used when banking the fire. Page 2 PN 02702600 Rev A 10/00 [. . . ]