User manual FIELD CONTROLS 46190700

[. . . ] Fasten the CK-43 junction box through the four dimpled locations on the base of the box. (See Figure 3) PRESSURE SWITCH SENSING TUBE INSTALLATION 1. Attach the 1/4 inch tubing connector to the pressure tube on the SWG Venter. Connect the supplied 1/4" aluminum tubing to the tubing connector. [. . . ] INSERTION OF DRAFT CONTROL SECTION Insert the draft control into the collar or tee. The front face of the control MUST be plumb and the bearing surfaces MUST be level whether the control is on a horizontal, vertical or sloping flue pipe. Use a spirit level and level accurately. (See Figures 6 & 7) Secure the control in the collar by tightening the clamping screws. If a tee is used or a collar is supplied locally, the control may be held in place by sheet metal screws. ADJUSTMENTS ADJUSTING THE DRAFT CONTROL WITH 4" MG1 The control MUST be adjusted to the desired draft setting by adding or removing the washer-type weights supported by the two chains on the side of the draft control. (See Figure 8) DO NOT move the weight attached directly to the gate, this is used only for balancing at the factory. ADJUSTING THE DRAFT CONTROL WITH 5" AF Vertical Flues Mounting - 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. Horizontal Flues Mounting - For hori-zontal flues, remove the weight from the right hand slot and attach it to the left hand slot as shown in Figure 9. What Draft Setting to Use - When adjusting the control, two things are essential: 1. The burner must be operating for at least 10 minutes to obtain maximum chimney draft. Figure 9 2. An analysis of the flue gases is necessary to determine the percentage of CO2 and check for presence of CO. Refer to the appliance instructions and/or to the local gas company for the proper CO2 readings and allowable CO levels. A rule of thumb for draft setting is between . 01" to . 03" of water column draft at the appliance outlet. (Check equipment requirement. ) Figure 8 Figure 6 Figure 7 Changes in the adjustment of the 4" MG1 control should be made by adding or removing the washer-like weights (supplied with the control) to or from the weight holder chain assembly. After the control is adjusted, it's action will be entirely automatic, the gate will open or close by itself to correct for changes in the draft that occur in the chimney. Page 4 PROVING SWITCH ADJUSTMENTS After proper air flow is established, the pressure switch adjustment is made by turning pressure switch adjustment screw clockwise (See Figure 10) until burner operation stops. Turn the adjustment screw counter clockwise until burner ignites. Turn the adjustment screw an additional 1/4 to 3/4 turn counterclockwise to ensure adequate switch adjustment. WARNING: Failure to properly adjust the pressure switch as specified above could lead to improper operation of the pressure switch which will result in a hazardous condition and bodily harm!THERMOSTAT HEAT ANTICIPATOR ADJUSTMENT After venting kit installation and checkout, check the amperage current draw through the thermostat circuit and adjust the thermostat anticipator accordingly. POST PURGE TIMER ADJUSTMENT Figure 11 To adjust the post purge time, rotate the timer adjustment screw on the timer counterclockwise to decrease post purge time. [. . . ] Check wiring connections between pressure switch and burner. Check pressure switch for conti-nuity across terminals, during venter operation. Venter does not activate when thermostat calls for heat. Check for negative pressure in building. [. . . ]