Gas Piping - Crown Boiler PHNTM120 Installation And Operation Instructions Manual

([SORVLRQ +D]DUG )DLOXUH WR SURSHUO\ SLSH JDV VXSSO\ WR ERLOHU PD\ UHVXOW LQ LPSURSHU RSHUDWLRQ
RU OHDNV RI ÀDPPDEOH JDV
‡ *DV VXSSO\ WR ERLOHU DQG V\VWHP PXVW EH DEVROXWHO\ VKXW RII SULRU WR LQVWDOOLQJ RU VHUYLFLQJ
ERLOHU JDV SLSLQJ
‡ $OZD\V DVVXUH JDV SLSLQJ LV DEVROXWHO\ OHDN IUHH DQG RI WKH SURSHU VL]H DQG W\SH IRU WKH
FRQQHFWHG ORDG
‡ 8VH D WKUHDG FRPSRXQG FRPSDWLEOH ZLWK OLTXH¿HG SHWUROHXP JDV )DLOXUH WR XVH SURSHU
WKUHDG FRPSRXQGV RQ DOO JDV FRQQHFWRUV PD\ UHVXOW LQ OHDNV RI ÀDPPDEOH JDV
‡ ,I LQOHW SUHVVXUH LV DERYH  SVLJ  N3D DQ DGGLWLRQDO JDV SUHVVXUH UHJXODWRU LV UHTXLUHG
&RQVXOW JDV VXSSOLHU
‡ 6L]H FRUUXJDWHG VWDLQOHVV VWHHO WXELQJ &667 WR HQVXUH SURSHU FDSDFLW\ DQG PLQLPL]H ÀRZ
UHVWULFWLRQV
*DV SLSLQJ WR WKH ERLOHU PXVW EH VL]HG WR GHOLYHU DGHTXDWH JDV IRU WKH ERLOHU WR ¿UH DW WKH QDPHSODWH LQSXW DW DQ LQOHW
pressure between the minimum and maximum values shown in Table 8.2. When sizing, also consider other existing
and expected future gas utilization equipment (i.e. water heater, cooking equipment). For more information on gas line
sizing, consult the utility or the National Fuel Gas Code, NFPA54/ANSI Z223.1, and/or CAN/CSA B149.1 Natural
Gas and Propane Installation Code.
Figure 8.1 shows typical gas piping connection to the boiler. A sediment trap must be installed upstream of all gas
controls. Install the factory provided manual shut-off valve outside the jacket with a ground joint union as shown.
All above ground gas piping upstream from manual shut-off valve must be electrically continuous and bonded to a
grounding electrode. Refer to National Electrical Code, NFPA 70.
The boiler and its gas connection must be leak tested before placing the boiler in operation. When doing this, the boiler
and its individual shut-off must be disconnected from the rest of the system during any pressure testing of that system
at pressures in excess of 1/2 psi (3.5kPa). When pressure testing the gas system at pressures of 1/2 psi (3.5kPa) or
less, isolate the boiler from the gas supply system by closing its individual manual shut-off valve. Locate leaks using
approved combustible gas non-corrosive leak detector solution.
([SORVLRQ +D]DUG 'R QRW XVH PDWFKHV FDQGOHV RSHQ ÀDPHV RU RWKHU LJQLWLRQ VRXUFH WR FKHFN
IRU OHDNV
,I JDV SUHVVXUH LQ WKH EXLOGLQJ LV DERYH  SVLJ  N3D  DQ DGGLWLRQDO JDV SUHVVXUH UHJXODWRU
LV UHTXLUHG 8VLQJ RQH DGGLWLRQDO UHJXODWRU IRU PXOWLSOH JDV DSSOLDQFHV PD\ UHVXOW LQ XQVDIH
RSHUDWLRQ 7KH DGGLWLRQDO UHJXODWRU PXVW EH DEOH WR SURSHUO\ UHJXODWH JDV SUHVVXUH DW WKH LQSXW
RI WKH VPDOOHVW DSSOLDQFH ,I WKH UHJXODWRU FDQ QRW GR WKLV WZR RU PRUH DGGLWLRQDO UHJXODWRUV
DUH UHTXLUHG &RQVXOW UHJXODWRU PDQXIDFWXUHU DQGRU ORFDO JDV VXSSOLHU IRU LQVWUXFWLRQV DQG
HTXLSPHQW UDWLQJV
VIII Gas Piping
:$51,1*
'$1*(5
:$51,1*
62