Specifications
WATER CONNECTIONS
CIRCULATING
PUMP
A
pump
capable
ol delivering
the minimum
required
f low
rate
(table
1) must be opetated
betore heater
is fired.
BELOW
POOL INSTALLATION
lf the
heater is below
water.level, the
pressure
switch
must
be
adjusted.
(This
adjustmenl
must be done by a
qualified
service technician-)
rabrel
RECoMMENDEDFLow
1Vr"
Min.
Max.
All C120's
20
80
20
All C180's
20
80
20
All C240's
25
80
25
All C300's
30
80
30
All C360's
35
80
35
All C400's
35
80
35
'Equipped
with Hydro-mechanical
modulatol
Model
RATE
Min. Max.
120
120
120
'120
120
120
GAS
CONNECTIONS
GAS
LINE
Before
installing the
gas
line, be sure
to check
what
gas
the
heater
has been designed
lo burn.
This is
important
because dilterenl
types of
gas
require
different
gas
pipe
sizes.
The
rating
plate
on the
heater
will indicate which
gas
the
heater
is
designed
to burn.
The
lollowing table
shows
what size
pipe
is
required for the distance
from
gas
meter to the
heater.
The
table
is
for natural
gas
at
a
specific
gravity
of
.65 and
propane
at specific
gravity
of
1.5.
When sizing
gas
lines, calculate
3 additional
feet of
siraight
pipe
for
every
elbow used.
The
pipe
sizes
shown
in
this
table are
for natural
gas
For
propane
gas,
decrease
bY one size.
When
laying the
gas
line, avoid
getling
dirt,
grease
or other
foreign material
in
the
pipe
as this
may cause damage
to
the
gas
valve,
resulting
in heater
failure.
The
gas
meter should
be checked
to
make sure that
it will
supply
enough
gas
lo
the heater
and any other
applaances
that
may be
used on the
same melel.
The
gas
line lrom the
meter
will usually be of
a larger
size
than
the
gas
valve supplied
with the
heater'
Therefore a
reduction
of
the
gas
line
will
be
necessary
Make this
reduclion
as
close to the
heater as
possible.
The
heater and
any other
gas
appliances
must be
disconnected
fromthegas
supply
piping
system during
any
pressuretesting on
that system
(grealer
than
%
Psig).
The heater
and its
gas
connections
must
be
leak
tested
before
placing
lhe
appliance
an
operatlon.
A manual main
shut'off
valve must
be installed
exlernal lo
the heater.
Do
not install
gas
line union
inside
healet
jacket.
Natural
Propane
'10"
w.c.
14" w.c.
6"
W.C..' 12"
W.C.
5"
W.C. 1l"
W.C.
Maximum lnlet
Gas Pressure
Minimum
Inlet Gas
Pressure
Normal
Manifold Pressure
"7"
W.C.
tor C400
able
SIZED FOR
MODEL
1/2"
1"
1'4"
1Y2"
c t20
10 40 60
150' 500 600'
c
180 20 30'
80
125' 250
450' 600'
c240
10 20 50'
80 150 250'
500 600'
c300
10' 30'
50'
100' 200' 350
400' 600'
c360
20 30'
70' 125 250
250 500
c400
10
20' 60' s0'
150'
150 450
TESTING
REGULATED
MANIFOLD
PRESSURE
1.
Attach
manometer to
heater
iackel.
2. Shut
oft
main
gas
valve.
3.
Remove
118"
NPT
plug
on
outlet
face
of
valve and screw
in the
titting
lrom manometer
kit.
4. Connect
manometer
hose
to the
fitting.
5.
Turn on
heater.
6.
The manomeler
must read 5"
WC for natural
gas,
11"
WC tor LP
gas,
while heater
is tiring.
7. For adjustment,
remove
"Reg.
Adj." cap
and turn screw
using
screwdriver
clockwise
to
increase, counter'
clockwise
to decrease
9as
pressure.
R
I
EG.
ADJ.
CAP
10
NPT
PLUG
Fig.
l9