Weil-McLain GV90+ Installation And Start-Up Manual page 56

GV90+ Series 2
aA~tB£11
WATIII BtJtLER -
Boiler ManuaJ
Wiring
(coovnuetJ)
Figure 66 Fi91d wiring conneclions - sGrViQe switc h and thermostat (or end switch) provided
by
installer
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alip~lld ~
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tum,.sa
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l!fld vwOe.d
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bii/II'Jl . Aftot aroJII*iot is pP,d, oonf'IIIQI
•ltil to
cfn:tJ!aitof
Md secure nall'I8A
,_.,!Wir «maun oon~ to dnaJator !Unction
llOI(,
Thennostat wires are labeled
1
'T- T" on boiler. Rtmove label bt-
foreronnectinga.sshown in Figure66. Routt
this
wiring through
the hole in the uppe-r lefr side jacket.
For zoned sysrems, substitute the
1.0n e
val\·e end swirches o r
circulator relay contacts fo r rhe r.hennost:at conracr shown in
Figurt66.
DHW
Connect the
OHVV
aquastat as shown in wiring abovt. The
Economy function of the contro l is not utiliud with DH\V
inpuL
R & C Connections
24 Vac should be used fo r power stealing thermosrars only!
1
N OTICE
1 Other devices
r~ui ring
24 Vac should ha..,.e sepa-
rate pow.: e r supply.
Wiring multiple zones
Refer ro zone valve manufacrurer>s literature for wiring and
application. A separate transformer
is
r~uired
to power 7.0ne
valves. Zoning with circulatOrs requires a relay for each circularor.
I
N OnCE
1
When using rhree- wirt zone valvts, take
ca~
ro
a\'Oid m is- wiring. This can impose an additional
24 volts across rhe bomer control circuitry. The IBC will sense
thls
problem and locko ut. It
will flash
the POWER and TS!'AT
CIRC lights to indicate the problem. See label on IBC for expla-
n ation of lockout con ditions. To verify before connecting ro
56
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DWWb:~dc..
RC"od'-
~~~da
thf'OIIIIh
IIIQI&I 1 !11
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boiler, disconnect field thermostat wires at boiler. Place a
\'Oit-
merer across the leads. Then
watch
rhe voltmeter as each
1.0ne
is
acti\<attd (byactivaring
zone
thermosrat) . There should
never
be
a voltage rt":adingacross the two leads coming ro the boiler. lf)'Ou
see
a voltage read inS>
one
or more zone vah·es is mis-wirtd.
Carbon monoxide detector
IAWARNIN G I
F<>r Olrtct Exhaust units> a carbon monoxide
de-tector is required in the boiler room. The
car bon monoxide detector must be wired o n rhe
same
electrical circuit as
the
boiler. For
Direct
Vent u nits, a carbon monoxide detecror that is
wired on the $ilme electrical circuit as the boiler
is strongly recommended.
Fi gu re 67 Wiring location for
add~ional lim~
controls
Cut thl:s lln. t o wfre
addHionalllmll
control contactt:.
Cont•cts must be
Isolated (not powered
from any other sou rce),
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Mel .. :
.. . . .
·-
Pan
number
550-142-783/1012