Page 46

SHUFHQW RI WKH FDOFXODWHG KHDW ORVV RI WKH VWUXFWXUH :KHQ WKH LQVWDOOHG UHIULJHUDWLRQ F\FOH KHDWLQJ FDSDF LW\ LV OHVV WKDQ  SHUFHQW RI WKH FDOFXODWHG UHTXLUH PHQW WKH DX[LOLDU\ SOXV UHIULJHUDWLRQ F\FOH FDSDFLW\ VKDOO QRW H[FHHG  SHUFHQW RI WKH FDOFXODWHG GHVLJQ KHDWLQJ UHTXLUHPHQWV 7KH WRWDO RI WKH LQVWDOOHG HPHU JHQF\ KHDW DQG DX[LOLDU\ KHDW VKRXOG QRW H[FHHG  SHUFHQW RI WKH GHVLJQ UHTXLUHPHQWV 

%2,/(56

%RLOHUV XVHG LQ FRQMXQFWLRQ ZLWK K\GURQLF VSDFH KHDW LQJ RU FRROLQJ RU GRPHVWLF KRW ZDWHU VKDOO EH FRPSDW LEOH ZLWK WKH V\VWHP DQG LQVWDOOHG LQ FRPSOLDQFH ZLWK ORFDO JRYHUQLQJ FRGHV %RLOHU QHW KHDWLQJ FDSDFLW\ VKDOO EH HTXDO WR D PLQLPXP RI  SHUFHQW RI WKH FDO FXODWHG KHDW ORVV RI WKH VWUXFWXUH (DFK ERLOHU PXVW EH HTXLSSHG ZLWK DOO VDIHW\ FRQWUROV YDOYHV DQG WULP UH TXLUHG E\ ORFDO EXLOGLQJ UHTXLUHPHQWV 5HTXLUHG PH FKDQLFDO HOHFWULFDO VDIHW\ DQG RSHUDWLQJ FRQWUROV VKDOO FDUU\ WKH DSSURYDO RI D QDWLRQDOO\ UHFRJQL]HG WHVWLQJ DJHQF\ 

&22/,1* (48,30(17 6,=,1*

(YHU\ HIIRUW VKRXOG EH PDGH WR REWDLQ DQG XVH WKH PDQXIDFWXUHUV FRROLQJ SHUIRUPDQFH GDWD DSSOLFDWLRQ UDWLQJV IRU VHOHFWLQJ HTXLSPHQW 7KLV SXEOLVKHG LQ IRUPDWLRQ VKRXOG SURYLGH ERWK WKH VHQVLEOH DQG ODWHQW FRROLQJ FDSDFLW\ IRU WKH IROORZLQJ FRQGLWLRQV



08/7,²=21( (48,30(17

0XOWL±]RQH FRROLQJ HTXLSPHQW VL]LQJ UHTXLUHV D VHSD UDWH FRROLQJ ORDG FDOFXODWLRQ IRU HDFK ]RQH 7KLV FDO FXODWLRQ VKRXOG LQFOXGH DQ DOORZDQFH IRU WKH SHDN ]RQH VHQVLEOH ORDG DQG DQ HVWLPDWH RI WKH ]RQH ODWHQW ORDG :KHQ VLPXOWDQHRXV ³ZKROH KRXVH´ FRROLQJ LV QRW UHTXLUHG PXOWL±]RQH V\VWHPV FDQ EH VHOHFWHG WR SURYLGH D WRWDO FRROLQJ FDSDFLW\ WKDW LV OHVV WKDQ WKH WRWDO FDOFXODWHG ORDG IRU WKH ³HQWLUH´ KRXVH VLQFH QRW DOO ]RQHV ZLOO UHDFK WKHLU SHDN ORDG DW WKH VDPH WLPH 

+($7 38036

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

',5(&7 (9$325$7,9( $,5 &22/(56

D

$LU VRXUFH FRQGHQVLQJ XQLW RSHUDWLQJ DW WKH VXPPHU GHVLJQ WHPSHUDWXUH RU ZDWHU FRROHG FRQGHQVLQJ XQLW RSHUDWLQJ DW WKH GHVLJQ ZD WHU WHPSHUDWXUH

(YDSRUDWLYH DLU FRROHUV DUH YHU\ HIILFLHQW DQG UHODWLYHO\ LQH[SHQVLYH WR LQVWDOO DQG RSHUDWH KRZHYHU WKH\ ZLOO RQO\ RSHUDWH LQ JHRJUDSKLFDO ORFDWLRQV KDYLQJ IDLUO\ GU\ VXPPHU DLU FRQGLWLRQV VXFK DV WKH 6RXWKZHVW

E

,QGRRU IDQ RSHUDWLQJ DW WKH GHVLJQ DLUIORZ FIP 

'LUHFW HYDSRUDWLYH DLU FRROHUV DUH DYDLODEOH LQ WKUHH EDVLF GHVLJQV

F

,QGRRU FRLO RSHUDWLQJ DW HQWHULQJ GU\ EXOE DQG HQWHULQJ ZHW EXOE WHPSHUDWXUHV ZKLFK FDQ EH H[SHFWHG WR RFFXU DW WKH VXPPHU GH VLJQ FRQGLWLRQ





$,5 &21',7,21(56 &22/,1* 21/<

&RROLQJ 2QO\ HTXLSPHQW VKRXOG EH VHOHFWHG VR WKDW LWV VHQVLEOH FDSDFLW\ LV QRW OHVV WKDQ FDOFXODWHG WRWDO VHQVLEOH ORDG EXW ZKHQ SRVVLEOH QRW PRUH WKDQ  SHUFHQW RI WKH GHVLJQ ORDG FDOFXODWHG E\ WKH SURFH GXUHV LQ &KDSWHU  RU WKH QH[W ODUJHU DYDLODEOH VL]H SURYLGHG E\ WKH PDQXIDFWXUHUV SURGXFW OLQHV ,Q DGGL WLRQ WKH FRUUHVSRQGLQJ ODWHQW KHDW FDSDFLW\ RI WKH 

HTXLSPHQW VKRXOG QRW EH OHVV WKDQ WKH FDOFXODWHG OD WHQW ORDG

:HWWHG²0HGLD $LU &RROHUV

7KHVH FRROHUV DUH XVXDOO\ GHVLJQHG IRU DQ HYDSRUDWLYH SDG IDFH YHORFLW\ RI  WR  ISP ZLWK D SUHVVXUH GURS RI  LQFKHV RI ZDWHU :KHQ FOHDQ DQG ZHOO PDLQWDLQHG ZHWWHG±PHGLD DLU FRROHUV W\SLFDOO\ RSHUDWHG DW DQ HIILFLHQF\ RI DSSUR[L PDWHO\  SHUFHQW 7KH\ DUH HIIHFWLYH LQ UHPRYLQJ SDUWLFXODWH PDWWHU  PLFURQV DQG ODUJHU ,Q VRPH XQLWV VXSSOHPHQWDU\ ILOWHUV DUH XVHG DKHDG RI RU IRO ORZLQJ WKH HYDSRUDWLYH SDGV WR UHPRYH DGGLWLRQDO GLUW DQG WR SUHYHQW GLUW IURP HQWHULQJ WKH FRROLQJ V\VWHP ZKHQ WKH FRROHUV DUH RSHUDWHG ZLWKRXW ZDWHU DV IUHVK DLU SDFNDJHG YHQWLODWRUV

5HVLGHQWLDO &RPIRUW 6\VWHP ,QVWDOODWLRQ 6WDQGDUGV 0DQXDO Â&#x; 6HYHQWK (GLWLRQ

Smacna residential comfort system installation standards manual seventh edition  
Advertisement