A.O. Smith BTH 300 - TEMPERATURE-PRESSURE RELIEF VALVE TEST; DANGER BURN HAZARD; VENT SYSTEM

64
DISCHARGE PIPE
TEMPERATURE-PRESSURE
RELIEF VALVE
Figure 56
,I WKH 7HPSHUDWXUH3UHVVXUH 5HOLHI 9DOYH RQ WKH ZDWHU KHDWHU
ZHHSV RU GLVFKDUJHV SHULRGLFDOO\ WKLV PD\ EH GXH WR WKHUPDO
H[SDQVLRQ
NOTE:([FHVVLYHZDWHUSUHVVXUHLVWKHPRVWFRPPRQFDXVH
RI 7HPSHUDWXUH3UHVVXUH 5HOLHI 9DOYH OHDNDJH ([FHVVLYH
ZDWHU V\VWHP SUHVVXUH LV PRVW RIWHQ FDXVHG E\ WKHUPDO
H[SDQVLRQ LQ D FORVHG V\VWHP 6HH 7KHUPDO ([SDQVLRQ
DQG &ORVHG :DWHU 6\VWHPV RQ SDJH  7KH 7HPSHUDWXUH
3UHVVXUH5HOLHI9DOYHLVQRWLQWHQGHGIRUWKHFRQVWDQWUHOLHIRI
WKHUPDOH[SDQVLRQ
7HPSHUDWXUH3UHVVXUH 5HOLHI 9DOYH OHDNDJH GXH WR SUHVVXUH
EXLOG XS LQ D FORVHG V\VWHP WKDW GRHV QRW KDYH D WKHUPDO
H[SDQVLRQ WDQN LQVWDOOHG LV QRW FRYHUHG XQGHU WKH OLPLWHG
ZDUUDQW\ 7KHUPDO H[SDQVLRQ WDQNV PXVW EH LQVWDOOHG RQ DOO
FORVHGZDWHUV\VWHPV
DO NOT PLUG THE TEMPERATURE-PRESSURE RELIEF
VALVE OPENING. THIS CAN CAUSE PROPERTY DAMAGE,
SERIOUS INJURY OR DEATH.
Explosion Hazard
Temperature-Pressure Relief Valve
must comply with ANSI Z21.22-
CSA 4.4 and ASME code.
Properly sized temperature-
pressure relief valve must be
installed in opening provided.
Can result in overheating and
excessive tank pressure.
Can cause serious injury or death.
VENT SYSTEM
([DPLQHWKHYHQWV\VWHPRQFHD\HDU3RLQWVRILQVSHFWLRQDUH
DVIROORZV
 &KHFNIRUREVWUXFWLRQVDQGRUGHWHULRUDWLRQRIWKHLQWDNHDLU
DQGRUYHQWSLSLQJDQGWKHLQWDNHDLUDQGYHQWWHUPLQDWLRQV
5HSODFHLPPHGLDWHO\ZKHUHQHHGHG
 7KH GHEULV VFUHHQV LQ WKH LQWDNH DLU DQG YHQW WHUPLQDWLRQV
VKRXOG EH VKRXOG EH FOHDQHG RI IRUHLJQ PDWHULDO DQG VRRW
6HH)LJXUHRQSDJH
NOTE: 'R QRW UHDFK LQVLGH WKH YHQW WHUPLQDWLRQ ZKHQ WKH
KHDWHULVLQRSHUDWLRQ
 &KHFNDOOYHQWV\VWHPFRQQHFWLRQVIRUOHDNDJHDQGUHSDLURU
UHVHDODVQHFHVVDU\
TABLE 20
UN-LIME® PROFESSIONAL DELIMER
Part Number Description
100110459 JDOORQFDVH
100110460 1 - 5 gallon
POWERED ANODE RODS
7R LQVXUH D ORQJ WURXEOHIUHH RSHUDWLQJ OLIH WKH ZDWHU KHDWHUV
FRYHUHG LQ WKLV PDQXDO DUH IDFWRU\ HTXLSSHG ZLWK D SRZHUHG
DQRGHV\VWHP7KHDQRGHURGVDUHRIDSHUPDQHQWGHVLJQDQG
GRQRWQHHGUHSODFLQJXQOHVVGDPDJHG,QVSHFWLRQDQGFOHDQLQJ
VKRXOGEHSHUIRUPHGRQFHD\HDU
NOTE:)ROORZWKHLQVWUXFWLRQVWRGUDLQWKHZDWHUKHDWHUVWRUDJH
WDQN RQ SDJH  ¿UVW 5HPRYH WKH SRZHUHG DQRGHV IURP WKH
ZDWHUKHDWHUE\ORRVHQLQJWKH137EXVKLQJWKDWIRUPVWKH
WRS RI WKH DQRGHV 'R QRW GLVDVVHPEOH WKH UHWDLQLQJ QXW DQG
ZLUHWHUPLQDOIURPWKHWRSZKLOHLQVWDOOHGLQWKHZDWHUKHDWHUWKH
DQRGHV HOHFWURGH PD\ IDOO LQVLGH WKH WDQN 5HPRYH WKH HQWLUH
DQRGHURG IURPWKHZDWHU KHDWHUSULRU WRLQVSHFWLRQ&OHDQWKH
DQRGHURGVZLWKDVRIWFORWKDQGUHLQVWDOO)ROORZWKHLQVWUXFWLRQV
IRU¿OOLQJWKHZDWHUKHDWHURQSDJHZKHQ¿QLVKHG
DRAIN VALVE AND ACCESS PANELS
7KH ZDWHU KHDWHUV FRYHUHG LQ WKLV PDQXDO DUH HTXLSSHG ZLWK
D GUDLQ YDOYH VHH )HDWXUHV $QG &RPSRQHQWV RQ SDJH  IRU
ORFDWLRQ 7KH ZDWHU KHDWHUV FRYHUHG LQ WKLV PDQXDO DUH DOVR
HTXLSSHGZLWK DFOHDQRXW RSHQLQJ IRUVHGLPHQW DQGOLPH VFDOH
UHPRYDO6HH)LJXUHRQSDJH
TEMPERATURE-PRESSURE RELIEF VALVE TEST
Burn hazard.
Hot water discharge.
Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
,WLV UHFRPPHQGHGWKDW WKH7HPSHUDWXUH3UHVVXUH 5HOLHI9DOYH
VKRXOG EH FKHFNHG WR HQVXUH WKDW LW LV LQ RSHUDWLQJ FRQGLWLRQ
HYHU\PRQWKV
:KHQFKHFNLQJWKH7HPSHUDWXUH3UHVVXUH5HOLHI9DOYHRSHUDWLRQ
PDNHVXUHWKDWQRRQHLVLQIURQWRIRUDURXQGWKHRXWOHWRIWKH
7HPSHUDWXUH3UHVVXUH 5HOLHI9DOYH GLVFKDUJHOLQH DQG WKDW
WKHZDWHUGLVFKDUJHZLOOQRWFDXVHDQ\SURSHUW\GDPDJHDVWKH
ZDWHUPD\EHH[WUHPHO\KRW8VHFDUHZKHQRSHUDWLQJYDOYHDV
WKHYDOYHPD\EHKRW
7R FKHFN WKH UHOLHI YDOYH OLIW WKH OHYHU DW WKH HQG RI WKH YDOYH
VHYHUDOWLPHVVHH)LJXUH7KHYDOYHVKRXOGVHDWSURSHUO\DQG
RSHUDWHIUHHO\
,IDIWHUPDQXDOO\RSHUDWLQJ WKHYDOYHLWIDLOV WRFRPSOHWHO\UHVHW
DQG FRQWLQXHV WR UHOHDVH ZDWHU LPPHGLDWHO\ FORVH WKH FROG
ZDWHU LQOHWWRWKH ZDWHU KHDWHU DQG GUDLQ WKH ZDWHU KHDWHUVHH
'UDLQLQJ $QG )OXVKLQJ RQ SDJH  5HSODFH WKH 7HPSHUDWXUH
3UHVVXUH5HOLHI9DOYH ZLWKDSURSHUO\UDWHGVL]HGQHZRQH VHH
7HPSHUDWXUH3UHVVXUH 5HOLHI 9DOYH RQ SDJH  IRU LQVWUXFWLRQV
RQUHSODFHPHQW