Domestic Hot Water
4@=F<=KA?FAF?L@=O9L=JHAHAF?KQKL=E>GJ<GE=KLA;
@GLO9L=J9HHDA;9LAGFKO9L=J@9J<F=KKK@GMD<:=;GF
KA<=J=<19:D=%AF<A;9L=KL@=KM??=KL=<>DGOJ9L=K>GJ
KG>L9F<E=<AMEO9L=J%9J<O9L=JEMKL:=KG>L=F=<
>GJ <AJ=;L @=9LAF? OAL@ L@= 5#QJ= 49L=J @9J<F=KK AK
=PHJ=KK=<AF?J9AFKH=J?9DDGF
Fig. 9: MODE 3 - Single Boiler with Indirect
on Boiler Loop
NOTE: &>DG;9D;G<=KJ=IMAJ=9N9;MMEJ=DA=>N9DN=
9;IMAJ= GF= DG;9DDQ 9F< AFKL9DD H=J N9DN=
E9FM>9;LMJ=J]KAFKLJM;LAGFK
Fig. 10: WH Units - Single Water Heater with Tank
H Units - Single Boiler with Process Tank
<=L=JEAF=< :Q L@= O9L=J L=EH=J9LMJ= 9L L@= &F<AJ=;L
0MHHDQK=FKGJ09F<L@=19J?=L*9PK=LLAF?O@=F
MKAF?L@=&F<AJ=;L!%4K=FKGJ01@=GAD=J-MEH
- JMFK <MJAF? 9DD @=9L ;9DDK J=?9J<D=KK G> HJAGJALQ
1@=&F<AJ=;L!%4-MEH-JMFK<MJAF?9FAF<AJ=;L
;9DD>GJ@=9LOAL@FG[G>>\<=D9Q1@=GAD=J-MEH-
9F<0QKL=E-MEH-<=D9Q[G>>\9KMK=J<=>AF=<AF
L@= ADJUST E=FM 1@= KQKL=E HMEH - JMFK
O@=F=N=J L@= KQKL=E AK =F9:D=< >GJ @=9LAF? 9F< L@=
GML<GGJ9AJL=EH=J9LMJ=AKDGO=JL@9FL@=440!L=E
H=J9LMJ=K=LLAF? A>MLADAR=<MFD=KK 9FAF<AJ=;L ;9DD>GJ
@=9LAKHJ=K=FL
WH – Direct DHW Configuration
4@=FL@=MFALAKGJ<=J=<9K9[4%\;GF>A?MJ9LAGFL@=
GFDQ9HHDA;9LAGF9N9AD9:D=LGALAK<AJ=;L!%4OAL@KAF
?D=GJEMDLAHD=@=9L=JK*9PAEME@=9L=JK1@=L9FC
L=EH=J9LMJ=AK;GFLJGDD=<:QL@=0QKL=EK=FKGJ0
1@= GAD=J -MEH - JMFK <MJAF? 9FQ ;9DD >GJ @=9L
1@=0QKL=E-MEH-GMLHMLAK9;LAN=O@=F=N=JL@=
KQKL=E AK =F9:D=< 1@= GAD=J -MEH AK <=D9Q=< [G>>\
9>L=JL@=19FC19J?=LL=EH=J9LMJ=AK9;@A=N=<9F<9K
MK=J<=>AF=<AFL@=ADJUST E=FM
NOTE: 19FCIM9KL9L;9F:=MK=<AFDA=MG>L@=
&F<AJ=;L!%40=FKGJ00==L@=3=JK9& E9FM
9D>GJ9<<ALAGF9D<=L9ADK
NOTE: 4% MFALK OADD GH=J9L= LG 9 E9PAEME L9FC
L=EH=J9LMJ= G> # #GJ L=EH=J9LMJ=K J=IMAJ=<
9:GN=#9F[%\EG<=D:GAD=JEMKL:=MK=<9F<
?J=9L;9J=EMKL:=?AN=FLG=FKMJAF?O9L=J@9J<F=KK
AKD=KKL@9F?J9AFKH=J?9DDGFLG=FKMJ=K;9D=>J==
GH=J9LAGF*,!"K@GMD<:=MK=<9F<;GF>A?MJ=<
>GJ K=LHGAFL GH=J9LAGF >GJ HJG;=KK @=9LAF? 9HHDA;9
LAGFK