Install Instructions

Installation
1. Install the THERM-X-TROL
®
on the city supply line to the water heater at a point
between the water heater and backflow preventer, check valve or pressure
r
educing valve (see Figure 1).
2
. Once the THERM-X-TROL
®
i
s installed, check the city supply line for any
leakage. Make repairs if necessary.
3
. Before the initial firing of the water heater, open any hot water fixture and draw
water until all air is removed from the system. Turn the water heater temperature
c
ontrol to desired ending temperature level, (see water heater instructions).
4. To relieve initial thermal expansion, slightly open a hot water faucet. Continue
u
ntil water heater aquastat temperature is satisfied. Once heater is at its
operating range, no further bleeding of expanded water is required.
5
. The water heater and THERM-X-TROL
®
w
ill now be operational. The THERM-X-
TROL
®
will control pressure increases caused by thermal expansion to a level
w
ell below the water heater relief valve setting.
Maintenance
1.
A pr
ofessional plumber should check the complete system, including the
THERM-X-TROL
®
, yearly and more frequently as the system ages.
Operation
1. The THERM-X-TROL
®
is installed in the supply line between the backflow
pr
eventer and the water heater
. Its sealed-in air pr
e-charge prevents water from
entering it until the system pressure exceeds the pre-charge pressure.
2. As the water temperature rises, expanded water enters the THERM-X-TROL
®
’s
non-corrosive water reservoir.
3.
As hot water is used, the pr
essure in the air chamber forces water back into the
system until the THERM-X-TROL
®
is empty.
NOTE: Models ST-5, ST-12, and ST-25V are IAPMO listed (International
Association of Plumbing and Mechanical Officials). All models are listed
(ST
-5 thru ST
-210V) under ANSI/NSF Std 61.
NOTE: ST-25V through ST-240V are floor standing only.
R
EAD CAREFULLY THE PRODUCT INSTALLATION,
O
PERATING AND MAINTENANCE MANUAL. FAILURE TO
FOLLOW THE INSTRUCTIONS AND WARNINGS IN THE MANUAL MAY RESULT
IN SERIOUS OR FATAL INJURY AND/OR PROPERTY DAMAGE, AND WILL VOID
T
HE PRODUCT WARRANTY. THIS PRODUCT MUST BE INSTALLED BY A
Q
UALIFIED PROFESSIONAL. FOLLOW ALL APPLICABLE LOCAL AND STATE
CODES AND REGULATIONS, IN THE ABSENCE OF SUCH CODES, FOLLOW
THE CURRENT EDITIONS OF THE NATIONAL PLUMBING CODE AND
N
ATIONAL ELECTRIC CODE, AS APPLICABLE.
THIS IS THE SAFETY ALERT SYMBOL. IT IS USED TO ALERT YOU
TO POTENTIAL PERSONAL INJURY AND OTHER HAZARDS. OBEY
A
LL SAFETY MESSAGES THAT FOLLOW THIS SYMBOL TO REDUCE THE RISK
O
F PERSONAL INJURY AS WELL AS PROPERTY DAMAGE.
T
his Product, like most Products under pressure, may over
time corrode. weaken and burst or explode, causing serious
o
r fatal injury, leaking or flooding and/or property damage. To minimize risk, a
licensed professional must install and periodically inspect and service the Product.
A drip pan connected to an adequate drain must be installed if leaking or flooding
could cause property damage. Do not locate in an area where leaking could cause
property damage.
RUPTURE OR EXPLOSION HAZARD A relief valve must be
installed to prevent pressure in excess of local code
requirement or maximum working pressure designated in the Product Manual,
whichever is less. Do not expose Product to freezing temperatures or temperatures
in excess of 200° F. Do not adjust the pre-charge or re-pressure this Product except
for any adjustments required at the time of initial installation, especially if Product
corroded, damaged or with diminished integrity. Adjustments to pre-charge must be
done at ambient temperature only. Failure to properly size the Product or follow
these instructions may result in excessive strain on the system lead to Product
failure, serious or fatal personal injury, leakage and/or property damage.
Chlorine & Aggressive Water: The water quality can
significantly influence the life of this Product. You should test
for corrosive elements, acidity, total solids and other relevant contaminants,
including chlorine and treat your water appropriately to insure satisfactory
performance and prevent premature failure.
Note: Inspect for shipping damage and notify freight carrier or store where
purchased immediately if damage present. To avoid risk of personal injury and
property damage, if the product appears to be malfunctioning or shows signs of
corrosion, call a qualified professional immediately
. Curr
ent copies of the Pr
oduct
manual can be viewed at www.amtrol.com. Use proper safety equipment when
installing.
Use only with potable water system. Do not operate in a
setting with freezing temperatures or where the temperature
can exceed 200°F and do not exceed the maximum working pressure specified for
this Product in the Manual. Mount vertically only.
CALIFORNIA PROPOSITION 65 WARNING! This product
contains a chemical known by the State of Califor
nia to
cause cancer and to cause birth defects or other r
epr
oductive harm. (Califor
nia
Installer/Contractor - California law requires that this notice be given to
consumer/end user of this product.)
For more information:
www
.amtrol.com/prop65.htm
Pre-Installation
1. Remove plastic cap from air valve.
2. Adjust pre-charge to equal incoming pressure.
3. Replace and tighten plastic cap on air valve.
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
INSTALLER: Leave this manual with the customer.
West Warwick, Rhode Island 02893
INSTALLATION & OPERATION INSTRUCTIONS
THERM-X-TROL
®
Thermal Expansion Absorbers (ST SERIES)
Figure 1.
MARK OF THE ORIGINATOR
H
ot Water
City Supply
THERM-X-TROL
®
Water
H
eater
STAND MODELS
Part #9015-087 (Rev
. D)
Revised 8/06
Water Heater
Size (gals.)
Static Supply Pressure (psi)
40
60
80
Max. Te mp. Setting 150°F
Water Heater
Size (gals.)
Static Supply Pressure (psi)
40 ST-5 ST-5 ST- 5
50 ST-5 ST-5 ST- 8
60 ST-8 ST-8 ST- 8
80 ST-8 ST-8 ST-12
120 ST-12 ST-12 ST-25V
40 ST-8 ST-8 ST- 8
50 ST-8 ST-8 ST-12
60 ST-8 ST-12 ST-25V
80 ST-12 ST-25V ST-25V
120 ST-25V ST-25V ST-25V
40
60
8
0
Max. Te mp. Setting 180°F
RESIDENTIAL SIZING
COMMERCIAL SIZING
* The ST-5, ST-8, ST-12 and ST-25 models come with a 5 year warranty. All other ST Series models come with a 1 year warranty See reverse side for
warranty information.