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3. Install burner harness located in the burner carton. Beckett or Carlin – EC7022 Harness (21" conduit) Riello – EC7023 Harness (28" conduit) 4. For complete information on servicing and adjustment of controls, refer to the attached control specification sheets. 5. See the following Wiring Diagrams: Figure 4.2 - Steam Boilers with Float LWCO Figure 4.3 - Steam Boilers with Probe LWCO Figure 4.4 - Water Boilers Figure 4.5 - Zoning with Circulators Figure 4.6 - Zoning with Zone Valves Figure 4.7 - Partner with Circulator 4. ELECTRICAL ELECTRICAL Improper installation of burner harness can allow burner to energize with burner mounting plate open, creating a severe burn hazard to boiler maintenance personnel. WARNING Figure 4.1: Junction Box Wiring 11 Figure 4.3: Steam Boiler with Probe Low Water Cut-Off Figure 4.2: Steam Boiler with Float Low Water Cut-Off ELECTRICAL 12 ELECTRICAL Figure 4.5: Zoning with Circulators Figure 4.4: Water Boilers ELECTRICAL Figure 4.6: Zoning with Zone Valves Figure 4.7: Partner with Circulator BURNER SETUP & BOILER OPERATION 5. BURNER SETUP & BOILER OPERATION CAUTION Burn only #2 Fuel Oil in this appliance. Do not use gasoline, crankcase drainings or any oil containing gasoline. A. BURNER INSTALLATION 1. The oil burner is supplied with a mounting flange fixed in position. 2. Mount the burner to the Burner Mounting Plate (item 3) with four (4) 5/16" studs and nuts provided. NOTICE Be sure hi temp gasket is between the burner mounting flange and the Burner Mounting Plate. 3. Care must be taken when routing the oil lines so not to interfere with the opening and closing of the burner mounting plate. Flexible oil lines or flared copper disconnects with valves (when copper lines are used) may be installed to assure full opening of the burner mounting plate when servicing. NOTICE Two-pipe oil supply for Riello burner requires a separate kit. Order part #C7001026 from Riello dealer. 4. Oil burner specifications: For information pertinent to the oil burner such as nozzle sizing, fuel supply piping, adjusting or servicing, refer to the charts in this section and the burner installation manual. B. BURNER START-UP AND ADJUSTMENT CAUTION Do not start the burner unless all cleanout doors are in place. 1. Burner should start automatically when thermostat is turned up and main boiler service switch is turned on. If burner does not start, check to be sure there is oil in the tank and push reset button on burner control: Beckett: Square red button. Carlin: Round red button. Riello: Round red button inside clear flexible cover on back of burner cover. If burner still does not start, contact serviceman. CAUTION Do not attempt to start the burner when excess oil has accumulated, when the unit is full of vapor, or when the combustion chamber is very hot. 2. Adjust burner and barometric draft control for highest CO. (Maximum 13% [EC-03 - EC-05] or 12-1/2% [EC-06]) while maintaining a 0 Smoke and -.01 to -.02" W.C. draft overfire. All adjustments must be made using suitable instruments such as found in a Bacharach Combustion Test Kit. 3. Burner and boiler can be shut down by turning down the thermostat and moving the main boiler service switch to the "off" position. 4. See burner manufacturer's manual for further information regarding the burner. C. CHECK BOILER CONTROLS 1. Limit and Operating Controls: a. Lower the set point of each control until the burner shuts down. Note that the system pressure (or temperature) corresponds to the desired set point. b. Return the controls to the desired set point. 2. Low Water Cut-off (if used) - consult the manufacturer's instructions for the low water cut-off operational check procedure. D. PURGE AIR FROM THE SYSTEM (WATER BOILERS ONLY) 1. Purge the system using purge valves, isolating zones in the process or use system vents. Do not operate the pump(s) while purging. Pumps will hold air in the eye of the impeller. 2. Allow the system to reach 180°F and use manual vents, if installed, to remove any remaining air. Watch the pressure gauge as the system approaches 180°F. If the pressure exceeds the design operating pressure, check: a. Fill valve pressure. b. Expansion or compression tank operation and sizing. BURNER SETUP & BOILER OPERATION E. CLEAN THE BOILER (STEAM BOILERS ONLY) 1. Clean the boiler within one week after initial start-up. Cleaning will be more effective if boiler operates a day or two to loosen sediment and impurities in system. 2. Boiler must be cleaned to remove any accumulation of oil, grease, sludge, etc. in the system. These substances can cause foaming and surging of boiler water, producing an unstable water line and water carryover to system. WARNING Cleaning the boiler requires the use of very hot water and corrosive chemicals. Use care when handling to prevent injury. 3. Connect a skim valve off the 1-1/2 NPT skim tapping on rear of boiler. See Figure 7.1 (Section 7) for skim tapping location. Run a 1-1/2 NPT drain line off skim valve to a...

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