Weather-Rite TT Series, Инструкция по установке, эксплуатации и обслуживанию

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SECTION 25: M
AINTENANCE
139 of 198
25.7 Burner
An ann u al inspection of the bu rner and components m u st b e made to ens u re
proper and safe operation. For the most part, the bu rner is self cleaning.
Ho w e v er, if the application is extremely dirty or d u sty, it may b ecome neces-
sary to periodically clean the bu rner. Inspect and clean the bu rner in accor-
dance w ith the follo w ing recommended proced u res:
First clean the bu rner plates. Then, clear the bu rner gas and air parts. Ins u re
the spark good is in good condition. Lastly, ins u re the flame sensor is in good
condition.
1. To a v oid damaging the v al v es, disconnect the bu rner piping from the
manifold, at the u nion inside the air handler's casing, and co v er the
exposed end of the manifold. See Page 78, Figure 62 through Page 81,
Figure 68 .
2. Disconnect the pilot gas line.
3. Remo v e the ignition ca b le from the igniter on the side of the bu rner, and
then remo v e the flame rod cond u ctor w ire along w ith the gro u nd w ire, if
so eq u ipped, u nscre w the UV scanner from the side of the bu rner
4. Remo v e the pilot assem b ly w hich is attached to the end of the bu rner
w ith fo u r machine scre w s and n u ts.
5. Remo v e the end caps off b oth ends of the bu rner and clean off the old
f u rnace cement b oth from the end caps and the bu rner.
6. To clean the bu rner plates yo u 'll need a stiff w ire b r u sh. Scr ub b oth
sides of the stainless steel bu rner plates to remo v e any soot or other
bu ild u p, w hich may b e on the bu rner. All of the bu rner plate holes m u st
b e clear so air can pass thro u gh them u nrestricted. The holes in the
bu rner plate allo w air to mix w ith the gas in increasing amo u nts, as the
flame gets longer.
7. After yo u ' v e cleaned the bu rner plates, inspect them for cracking.
Cracks occ u rring b et w een one or t w o holes are normal and sho u ld b e
of no concern. If the cracking is more extensi v e, the affected plates
sho u ld b e replaced.
8. While yo u ha v e the b r u sh in yo u r hand, scr ub the r u st, soot and other
foreign material from the bu rner orifice area.
9. Clean the bu rner gas and air ports u sing a drill b it or piece of w ire of the
appropriate size. See Page 140, Table 42 for drill size. Use a pin v ise
w ith the appropriate drill, to clean de b ris from the orifices. An electric
drill is not s u ggested b eca u se it is easy to snap drill b its off in the ori-
fices.
10. After the orifices are drilled to the correct size and u sing compressed air
or a v ac uu m, remo v e any de b ris from the manifold. De b ris left in the
manifold w ill premat u rely clog the orifices in the f u t u re.
11. Reinstall the end caps to b oth ends of the bu rner u sing ne w f u rnace
cement as a gasket material. Yo u sho u ld no w inspect the spark rod.
The tip sho u ld b e clean and free of dirt and car b on. The porcelain m u st
b e intact. If it's cracked, replace it. While yo u ha v e the spark rod o u t yo u
sho u ld p u ll the flame rod or u ltra v iolet scanner as w ell.