Rapid 7500 136, Инструкция по установке, эксплуатации и обслуживанию

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7500-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
32 of 143
SECTION 10: BURNERS
10.1 Principle of Operation
The bu rner is a self-contained u nit comprised of a
b lo w er assem b ly, firing head, igniter and flame
monitoring system. Gas bu rners u se m u ltiple orifices
w ith v ent u ri operation for proper com bu stion.
Oil bu rners u se press u re atomization for proper
com bu stion.
The "Type J" bu rner is u sed on gas-fired air t u rno v er
u nits w ith an inp u t of 300 - 2,200 MBH (87.9 - 644.8
kW). See Page 32, Figure 16 . The "Type C" bu rner is
u sed on all oil-fired air t u rno v er u nits and on gas-fired
air t u rno v er u nits w ith an inp u t of 2,201 - 5,625 MBH
(644.9 - 1648.5 kW). See Page 33, Figure 17 .
For more information on the bu rner pro v ided in a
specific air t u rno v er u nit, refer to the man u fact u rer’s
doc u mentation w ith the air t u rno v er u nit.
Air for com bu stion is f u rnished b y an integrally
mo u nted, motor-dri v en com bu stion air fan and is
controlled b y a m u lti-lo uv ered damper assem b ly. The
com bu stion air then discharges into the bu rner b last
t ub e assem b ly. High t u r bu lence flo w is controlled b y
means of an adj u sta b le fan diff u ser system.
The different modes of operation are achie v ed b y
u sing appropriate control v al v es and f u el/air
act u ators. B u rners are a v aila b le w ith on/off, high/lo w /
off and f u ll mod u lating modes. The air/f u el ratio is
esta b lished at the time of start- u p and pro v en w ith
com bu stion test eq u ipment to pro v ide the lo w est
practical emissions w ith a clean flame. See Page
112, Section 16.9 through Page 113, Section 16.10
for proper proced u res and emission le v els.
FIGURE 16: Typical "Type J" Burner
WARNING
Explosion Hazard
Leak test all components of gas/oil piping
before operation.
Gas/oil can leak if piping is not installed
properly.
Do not high pressure test gas/oil piping with
air turnover unit connected.
Failure to follow these instructions can result
in death, injury or property damage.