A.O. Smith BTH 300 - SUPPLY GAS PRESSURE ADJUSTMENT; CHECKING THE FIRING RATE; TO TURN OFF GAS SUPPLY

54
*DV/LQH,QVWDOODWLRQRQSDJHDQG6XSSO\*DV5HJXODWRURQ
SDJH(QVXUHDOOUHTXLUHPHQWVDQGLQVWDOODWLRQLQVWUXFWLRQV
DUHPDLQWDLQHG
CHECKING THE FIRING RATE
)ROORZWKHVHLQVWUXFWLRQVWRGHWHUPLQHWKHDFWXDO¿ULQJUDWHRIWKH
ZDWHUKHDWHU
127( 7KH KHDWHUV FRYHUHG E\ WKLV PDQXDO DUH FDSDEOH RI
PRGXODWLQJ WKHLU ¿ULQJ UDWH 7KH ¿ULQJ UDWH VKRXOG EH FKHFNHG
ZLWKWKHKHDWHURSHUDWLQJDWLWVIXOO¿ULQJUDWH
 (QVXUHWKHUHDUHQRRWKHUJDV¿UHGDSSOLDQFHVFRQQHFWHGWR
WKHJDVPHWHU¿ULQJGXULQJWKLVWHVW
 &RQWDFWWKHJDVVXSSOLHUWRGHWHUPLQHWKHKHDWLQJYDOXHLQ
%WXSHUFXELFIRRWRIWKHJDVVXSSO\
 6WDUWWKHZDWHUKHDWHUDQGHQVXUHLWLV¿ULQJ
 /RFDWHWKHJDVPHWHUVHUYLQJWKHZDWHUKHDWHU
 7LPHKRZORQJLQVHFRQGVLWWDNHVIRURQHFXELFIRRWRIJDV
WREHXVHGZKLOHWKHZDWHUKHDWHULV¿ULQJZLWKDVWRSZDWFK
 8VHWKHIRUPXODEHORZWR³FORFN´WKHJDVPHWHUDQGGHWHUPLQH
WKHDFWXDO¿ULQJUDWHRIWKHZDWHUKHDWHUEDVHGRQWKHKHDWLQJ
YDOXH%WXSHUFXELFIRRWRIWKHJDVVXSSO\
x H = Btu/hr
3600
T
x 1050 = 300,000 Btu/hr (87.9 kW)
3600
12.6
Example:
•  VHFRQGVLQRQHKRXU
• 7 WLPHLQVHFRQGVWREXUQRQHFXELFIRRWRIJDV
• + KHDWLQJYDOXHRIJDVLQ%WXSHUFXELFIRRW
• %WXKU DFWXDO¿ULQJUDWHRIWKHZDWHUKHDWHU
NOTE:%WXSHUFXELFIRRWLVDVWDQGDUGYDOXHIRUQDWXUDO
JDV6WDQGDUGSURSDQHJDV%WXFRQWHQWLV%WXSHUFXELF
IRRW %WX YDOXHV PD\ FKDQJH LQ FHUWDLQ DUHDV DQG DW KLJK
HOHYDWLRQV&KHFNZLWKWKHORFDOJDVXWLOLW\FRPSDQ\
TO TURN OFF GAS SUPPLY
 &KDQJHWKH2SHUDWLQJ6HW3RLQWWRWKHORZHVWWHPSHUDWXUHVHWWLQJ
VHH2SHUDWLQJ6HW3RLQW$QG'LIIHUHQWLDO$GMXVWPHQWRQSDJH
 :KHQWKHZDWHUKHDWHUKDVFRPSOHWHGLWVVKXWGRZQVHTXHQFH
DQGHQWHUVWKHVWDQGE\PRGHWXUQWKHZDWHUKHDWHU¶V(QDEOH
'LVDEOHVZLWFKWRWKH³'LVDEOH´SRVLWLRQ:KHQLQWKH'LVDEOH
SRVLWLRQ WKH VZLWFK RQO\ UHPRYHV HOHFWULFDO SRZHU IURP WKH
JDVYDOYHVRWKDWZDWHUKHDWLQJLVGLVDEOHG7KHGLVSOD\&&%
DQGRWKHUHOHFWULFDOFRPSRQHQWVZLOOVWLOOEHHQHUJL]HGDQGWKH
GLVSOD\ZLOOUHDG:DWHU+HDWLQJ'LVDEOHG
 &ORVHWKH0DLQ*DV6KXWRII9DOYHVHH)LJXUHRQSDJH
SUPPLY GAS PRESSURE ADJUSTMENT
Fire and Explosion Hazard
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
Excessive gas pressure to gas valve can
cause serious injury or death.
Do not use water heater with any gas
other than the gas shown on the rating
label.
6XSSO\JDVSUHVVXUHVKDOOEHPHDVXUHGZKLOHWKHZDWHUKHDWHULV
QRW¿ULQJVWDWLFSUHVVXUHANDZKLOHWKHZDWHUKHDWHULV¿ULQJDW
IXOOFDSDFLW\G\QDPLFSUHVVXUH
,IWKHVXSSO\JDVSUHVVXUHWRWKHZDWHUKHDWHULVQRWEHWZHHQ
WKHUHTXLUHGPLQLPXPDQGPD[LPXPYDOXHVJLYHQLQ7DEOHRQ
SDJHDGMXVWWKHVXSSO\JDVUHJXODWRUDVQHFHVVDU\$GMXVW
WKHVXSSO\JDVUHJXODWRUVSHUWKHUHJXODWRUPDQXIDFWXUHU¶V
LQVWUXFWLRQV WR DFKLHYH WKH UHTXLUHG ³VWDWLF´ DQG ³G\QDPLF´
VXSSO\JDVSUHVVXUH
Multiple Appliance Installations:
,Q PXOWLSOH ZDWHU KHDWHU LQVWDOODWLRQV RU LQ LQVWDOODWLRQV
ZKHUH WKH LQVWDOOHG ZDWHU KHDWHUV VKDUH D FRPPRQ JDV
VXSSO\PDLQZLWKRWKHUJDVILUHGDSSOLDQFHVWKHVXSSO\JDV
SUHVVXUHVVKDOOEHPHDVXUHGDWHDFKZDWHUKHDWHUZLWKDOO
JDVILUHGDSSOLDQFHVFRQQHFWHGWRDFRPPRQPDLQILULQJDW
IXOOFDSDFLW\
2Q PXOWLSOH ZDWHU KHDWHU LQVWDOODWLRQV WKH VXSSO\ JDV OLQH
UHJXODWRUV VKDOO EH DGMXVWHG WR SURYLGH JDV SUHVVXUH WR HDFK
ZDWHUKHDWHUZLWKLQWKHPLQLPXPDQGPD[LPXPVXSSO\SUHVVXUH
UHTXLUHPHQWV OLVWHG LQ 7DEOH  RQ SDJH  ZLWK DOO JDV ¿UHG
DSSOLDQFHV FRQQHFWHG WR D FRPPRQ JDV PDLQ ¿ULQJ DW IXOO
FDSDFLW\
NOTE:$SUHVVXUH GURSRIPRUHWKDQ´ :&N3D
ZKHQWKH0DLQ%XUQHULJQLWHVLVDQLQGLFDWLRQRIDQLQDGHTXDWH
VXSSO\RIJDVDQGFDQOHDGWRLJQLWLRQIDLOXUHURXJKVWDUWVDQG
RU URXJKRSHUDWLRQ ,I D GURS RIPRUHWKDQ ´ :& 
N3D LQ VXSSO\ JDV SUHVVXUH RFFXUV ZKHQ WKH 0DLQ %XUQHU
LJQLWHV HQVXUH WKH VXSSO\ JDV OLQHV DQG UHJXODWRUV DUH
SURSHUO\VL]HGDQGLQVWDOOHG6HHWKHUHTXLUHPHQWVIRU6XSSO\
*DV5HJXODWRUDQG6XSSO\*DV/LQHRQSDJH6HH6XSSO\