Weil-McLain GV90+ Installation And Start-Up Manual page 26

GV90+ Series 2
OAs-f'IR£D WATER BOILER-
Boiler Manual
Multiple boiler water piping
(continuooJ
Figure 33 Piping layOOI - Iypical tor multiple GV90+ bQilers, using Well-Mclain Easy-fit manijold<! (2·boiler system)
(
. ....... ®
~
-·j:v
~
-:J {
~(j)
_ . . -··-· · -"---. . l
.....-·· """·~
@
. __. . . - - t - - . . . . . . _ . . . . .
..
~ 11;
t
(!)
~
•
,-"
\
!
..
I
t
21
u
I Flow/dlock valw (I!Jllh
boill!f)
2 lliolation valves (""••
US<!d)
Legend- rigure'J3
~~~~~~~~----~~1
17 3-WII)'diwrtiogvai••
fop"'""'
bjl OHW
"'fWISiat-valwend
3
c..,. .
4
E.uy"Fi'*
M>nili>ld (supply)
-18)1JUt~d- s iu
per
P•8" 11
5
t;asy-Fi~
M-anifo1d (return ) - la}'"'Ut and
$iu percp3ge 2~
6
Primary
drculator
7
P~sion
tank
(.diaphragm type)
8 Sy$tt.m air cfbn in atnr
9
Systqm
automatic airvtml
t6 Cold
water
611 Uo.e- see
F!igur~"32. p;:~ge-
25 (or
q'pkal cnm--
pont:ots
$Witch cooneus.acmM boiler
thermo.stat
wmi:Qals)
I ~
S)'Stem supply
19 Syuem return
.20
Boiler
rc(~fvalv·e a~d~:arge:
ptplog,
i~11taU¢
pq
G\!'9()f
BQi.Jer Manual
"' 2 1 lndired -Gua
storage
water heaters-
~xa.mple-
is
shown oonnect-
td fO
ane
bOiler
Q(
tht~tm'4 Tbt indi~Ut ~"'llter
beater coulj:)
aJso
~
c;q,oneq('d
~th
a gecond. a ry'copnc«ion off the ma1n
beader,
a.~
io Figure.J4
1
ptgtt
27.
P.ut
number
55()..142-7831101 1