TM 5-3895-374-24-2 Figure 28 Gas/Oil Linkage Adjustment For Full Modulation Standard System Typical  general  linkage  arrangement  for  combination  gas/oil  full modulation burner, shown in low fire light off position.  Dotted lines indicate approximately high fire position. When making adjustments,  make  certain  the  motor  can  make  its  full  90  stroke without any linkage binding. Driver Arms (A) connected to the Modulating Motor (1) Jack Shaft (2) will increase the  travel  of  the  Driven  Arms  (B)  as  the  Linkage Rod (C) ball joint is moved away from the Jack Shaft.  The travel of the Driven Arms will be increased as the Linkage Rod ball joint is moved toward the shaft of the driven device. 4. GENERAL START UP PROCEDURES-ALL FUELS All Fuels · General Start Up A  thoroughly  qualified  burner  technician  should  be  employed  to provide   the   initial   burner   start   up,   as   well   as   any   subsequent servicing. A   representative   of   the   owner   and/or   the   person   or   persons responsible   for   operating   and   maintaining   the   unit   should   be present during the initial start up. A service representative may also be required by the local utility on gas  fired  equipment.    Instructions  regarding  the  proper  care  and maintenance   of   the   unit   should   be   outlined   with   these   people present. Before    beginning    start    up,    the    start    up    technician    should thoroughly  study  and  become  completely  familiar  with  the  exact sequence  of  operation  and  all  other  details  of  the  specific  flame safeguard  control  system  being  used.    This  information  will  be found in bulletins printed and supplied by Honeywell or Electronics Corporation   of   America   (Fireye).      A   copy   of   this   bulletin   was supplied with the burner. After  the  burner  is  mounted  and  all  wiring  and  piping  has  been completed,   tested   and   determined   to   be   correct,   the   following procedures are recommended: For combination gas/oil units; the gas side operation should be set up first to “clock the gas meter”, allowing precise gas inputs to be determined.  Once the gas operation is complete, the oil side can be  set  up  easily  by  correlating  the  CO2  values  of  the  two  fuels. See page 36, Table 13, “CO2-O2 Ratio Curves for  Fuel  Oils  and Gases.” If it is anticipated that the Gas/Oil burner will rarely run on oil; it is recommended that the blower motor driven oil pump   drive   coupling   be   removed   -   and   replaced   only   when required  for   oil   firing.      If,   however,   the   pump   coupling   is   left connected  to  the  blower  motor,  it  is  essential  to  ensure  that  the pump has a good oil supply, when the burner is operating on the gas cycle, so that it will not run dry.  Be certain on initial start up that the pump is adequately primed to prevent against mechanical seizure caused by lack of oil.  The pump warranty will be voided if the pump is run without adequate oil supply. 1. Make a general inspection tour of the equipment room to ensure  that  the  installation  is  complete.    Check  piping, controls, wiring and etc. 2. Close main and checking gas cocks.  Open suction line manual oil valves and others as appropriate. 3. Tighten all screws on terminal blocks in control cabinet in case some may have loosened in shipment. 4. Do  not  secure  flame  safeguard  control  into  its  wiring base until it has been determined that there are no shorts or grounds in the system. 5. Check fuses in main panel and in burner control cabinet. Check wiring to the burner control cabinet for compliance with the wiring diagram and local codes.  Determine that voltage supply is correct to motor starter line connections and to control circuit line connections.  If a control circuit transformer is supplied, make certain its primary voltage matches  the  line  voltage  being  supplied.    (A  230  volt transformer   does   not   produce   proper   control   voltage when supplied with 208 volts.) (page 3 - 973)