Heat Motor Zone Valves Instruction Manual
NUMBER
IS
100-3.2A
Plant
10.
N
o.
001-302
TO
SERVICE
1- Twist
off
Power Head *
2-Remove
the
4 Screws
from
hold
down
pl
ate
- Re
mo
ve s
eet
•
-mbl
y
. 0 RE-ASS
EM
BL
E
-
Reverse
above
p
rocedure
pushing
do
wn
on
seat
assembly and hold
do
wn pl
ate
against
return
spring.
I
NS
TRUCTI
ON
SHEET
Effective:
June
25
,
198
3
Supersedes:
IS1
00-3
.2A
dated
1 /
15/83
APPLICATION
555-
%"
556-
%''
557-1"
MODELS
560-
%''
561-
%"
562-1 ,
ZONE VALVES
571-
%"
572-1"
573-1 %"
The
Taco-Zone Valve is an electricity
op
er
at
ed valve used for
zone
control
of
Hydronic Heating
and
/o
r Cooling Systems. It
controls
the
flow
of
water
in a room
or
zone
in response
to
the
demands
of
the
room or zone
thermostat.
This valve
is
a precisely
made
device
and
must
be installed with care.
RATIN
G
Electrical: volts
amps
Temperature
range, max.
min.
Working pressure (
at
valve, including
pump
head)
Maximum differential pressure
across valve
(pump
head)
555
-
557
560
-
562,
571-573
24
0.9
240F
(115C)
40F
(5C)
12
5PSI (861kPa)
150
Ft.
(46m)
65Ft.
(20m)
Press
ur
e
Dro
p Char
acter
istics
Size
cv
Kv
t:_
q
Ui
v. Length
q_
f P
1pe
Feet
M
ete
rs
%"
4.2
3.6
8 2.4
%"
6.1
5.3
20
6.1
1"
7.0
6.1
65
19
.8
1%"
7.2
6.2 1
50
45.7
INS
TALLATION
Va
lv
es should be installed vertically,
to
simplify replac
ement
or
cleaning
of
the
seat, if ever re-
quired
at
some
future
date.
The
vertical installation permits drawing a vacuum in
the
system and
replacing
or
cleaning
the
seat
without
draining
the
system.
When
installing
560
Series Valves make sure
that
flow is in
at
the
unit
and
by-pass
connections
and
out
at
the
main
connection
as shown in Fig. 8
and
Fig.
9.
Valve may be
sweat
into
the
line
without
taking apart, provided, care is taken
to
prevent
over-
heating. Follow these simple instructions:-
THERMOST
AT
1.
Use a
to
rch with sharp,
pointed
flame.
2.
Clean surfaces
thoroughly
and
use a good grade
of
flux.
3.
Us
e
50
-50
or
60-40
solder. If grades
of
solde
r requiring higher tem-
peratures
are used, such as silver solder,
the
valve
must
be dismantled.
4. Avoid excessive use
of
flux.
Use a No.
568
Taco
Thermostat
(designed specifically
for
Taco-Zone Va
lv
es) with Heat
Anticipator
set
at
" 0 ".
Other
suitable two wire (SPST)
Thermostats
may also be used if Heat Antic
ipator
can
be
set
at
0.9
Amps
to
ma
tch
valve rating.
TRANSFORMER
Use a
No
.
569
Taco
Transfor
mer
or
other
make
rated
at
11 5/
24
V-
40V
A.
One
transformer
can
acco
mmo
date
a
ma
x
imum
of
3 Taco-Zone Valves.
MANU
AL OPENING LEVER
For
gr
avity circulation thru valve, push lever in Power Head all
the
way
down.
Push back
up
to
restore
to
auto
matic
operation.
Lever moves easily when valve
is
open
. Resistance
is
encounte
red
when
valve
is
closed.
CAUTION:
Addit
i
on
of
certain chemical additives
to
systems utilizing
Taco
equipment,
voids
the
warranty.
Product
can
withstand
antifreeze additives,
ethylene
glycol
and
propylene
glycol, pro-
vided
that
there
are
no
hydrocarbon
constituents
in these antifreezes .
* IMPORT A
NT
NOTE
Nev
er
remove
Pow
er
Head while
thermo
stat
is
calling for heat. If necessary to remove Power
Head, disconnect No. 1 wire from Power Head,
wait
two
minutes,
then
proceed.
Taco, Inc.
1160
Cranston
Street
. Cranston, Rhode Island
02920
Telephone: 1401) 942-8000
F102
-
017
Taco (C.n•dal
ltd
.
L•I""'of'l
VSA