4
WARNING
Improp er in stallat ion, a djust ment, altera tion, servic e or mainte nanc e can cau se pr opert y
damag e, pe rsona l inju ry or loss of li fe. F ailure to f ollow all in struc tions in th e pro per order
can cause pers onal injury or d eath. Re ad an d un derst and a ll ins tructi ons, includ ing a ll
those con tained in c ompon ent manufa cture rs man uals whic h are prov ided with the
applia nce before inst alling, start ing-up , op erating , main tainin g or serv icing this applia nce.
Keep this manua l and liter ature in le gible cond ition and poste d nea r ap plianc e for refer ence
by o wner and servic e tec hnicia n.
This boiler requ ires regula r main tenan ce a nd se rvice to o perat e saf ely. F ollow the
instru ctions con tained in this m anual . Ins tallati on, ma inten ance, and servi ce mu st be
perfo rmed o nly b y an expe rienc ed, s killed and know ledge able instal ler or serv ice a gency.
All he ating syste ms sh ould be d esign ed by com peten t con tracto rs an d on ly pe rsons
know ledge able in the layo ut an d ins tallat ion o f hyd ronic heati ng sy stems shou ld at tempt
instal lation of a ny bo iler. It is the r espon sibility of the in stallin g co ntrac tor to see that all
contr ols a re co rrectly inst alled and are o perati ng pr operl y wh en th e ins tallatio n is
comple ted. Insta llation is not c omplet e un less a pre ssure relief valv e is instal led in to th e
speci fied t appin g loc ated at the rea r of a pplia nce - See Sect ion II I of t his ma nual for d etails .
This boiler is s uitabl e for insta llation on combu stible floor ing. Do n ot in stall boiler on
carpe ting. Do not o perat e on floor s wh ere h eat a ffecte d mat erial i s bel ow.
Do n ot ta mper w ith o r alt er the boil er or cont rols. Reta in yo ur co ntrac tor o r a c ompet ent
servic eman to a ssure that the unit i s pro perly adjus ted a nd m aintain ed.
Clean boile r at least once a y ear - prefe rably at th e sta rt of the heatin g se ason to re move
soot and scale . Th e ins ide o f comb ustio n ch amber shou ld als o be clea ned and i nspec ted
at th e sam e time .
Have Burn er an d Co ntrols che cked at le ast o nce a yea r or as ma y be nece ssita ted.
Do n ot op erate unit with jumpe red o r abs ent contro ls or safe ty de vices .
Do n ot op erate unit if an y con trol, switc h, co mpone nt, o r dev ice h as be en s ubjec t to water.
Retur n wa ter c annot be l ower than 135°F for prolo nged perio ds o f time. Ope ration und er
these con ditions will resu lt in susta ined conde nsing with in th e com bustio n ch amber and
poten tially reduc e bo iler lo ngev ity.
In ad dition , the retur n wa ter ca nnot be i ntrodu ced into the b oiler if it i s mor e tha n 40° F les s
than the i dle b oiler temper ature. Co ntinue d op eratio n un der t hese cond itions may result in
prema ture b oiler failur e thro ugh therma l sho ck.
Examp le
: A boiler that has been idle for s ome ti me sin ce th e las t he at de mand cycle may
have it's boiler wate r tem peratu re re duced to 150°F. The return temp eratu re fro m the next
zone acti vation can not b e les s tha n 110 °F.
If the abo ve co nditio ns e xist, a n RT C sy stem must be in stalled to protec t the boile r fro m
susta ined conde nsing ope ration and therm al sh ock.
DANGER