How it Works
Bock Water heaters
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30ST
Instruction Manual
12 pgs436.07 Kb0

Bock Water heaters 30ST, 50ST, 80ST, 119ST Instruction Manual

To the Installer:
Please attach these instructions next to the water heater.
To the Consumer:
Please read these and all component instructions and keep for future reference.
Storage Tanks
Instruction Manual
Warranty, Registration Card and Parts List are included.
Owner: Please remember to return
the Registration Card!
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause serious injury or property damage. Refer to this manual. For assistance or additional information, consult a qualified installer or service agency.
CAUTION
WARNING
Hotter water increases the risk of scald injury. Before adjusting the water temperature setting, read this instruction manual. Temperatures at which injury occurs vary with the person’s age and the length of exposure. The slower reaction time of children, elderly, or physically or mentally challenged persons increases the scalding hazard to them. It is recommended that lower water temperatures be used where these exposure hazards exist. Households with small children or invalids may require a temperature setting less than 120°F to prevent accidental contact with hot water. To produce less than 120°F, use point-of­use temperature limiting devices.
If higher water temperature is needed in part of the water system, automatic temperature limiting devices must be used on all lines to water taps.
INSTALLER RESPONSIBILITIES
Please read all instructions before installing or placing this storage tank into service. This unit must be installed by licensed or authorized installers, or technical personnel that service water heating equipment. The Storage Tank must be installed in accordance with all local codes and ordinances.
HANDLING
Before uncrating, check for shipping damage. Report any damage to your carrier. Note damage on bill of lading or delivery receipt and file a claim.
LOCATION
This storage tank should be located in a central location to the piping system, as close as possible to the heat source and in an area not subject to freezing temperatures. Leave sufficient space for servicing and maintaining the tank.
THIS MANUAL HAS BEEN PREPARED TO
ACQUAINT YOU WITH THE INSTALLATION,
OPERATION, AND MAINTENANCE OF YOUR
WATER HEATER AND TO PROVIDE IMPORTANT
SAFETY INFORMATION.
Read all instructions thoroughly before at­tempting installation or operation of your water heater. Keep these instructions for future reference.
Local plumbing and electrical codes must be followed in the installation of this storage tank. In the absence of a local code use the UNIFORM PLUMBING CODE and the NFPA Code. Local codes may supersede instructions in this installation manual.
These instructions are a guide for the correct installation of the storage tank. The manufac­turer will not be liable for damages caused by failure to comply with the installation and operating instructions outlined on the following pages.
If you lack the necessary skills required or have difficulty following the directions, seek help from a qualified person for that part of the installation you do not understand.
FAILURE TO FOLLOW THESE INSTRUCTIONS
OR ALL APPLICABLE BUILDING CODES AND
REGULATIONS VOIDS THE WARRANTY ON
THIS WATER HEATER.
23950
Rev 5 6/16
B
Drain Valve
Supply/Return Conn.
Aquastat Conn.
Supply/Return Conn.
T&P Relief Valve Conn.
C
A
D
E
Drain
Valve
30°
Relief
Valve
45°
Aquastat
0°
ANODE
ANODE
45°
Supply
Return
Hot Outlet
C
A
Supply/Return Conn.
Drain Valve
Supply/Return Conn.
Aquastat Conn.
D
E
B
T&P Relief Valve Conn.
30°
Drain
Valve
45°
Relief
Valve
0°
Aquastat
45°
Supply
Return
Hot Outlet
ANODE
ANODE
Table 1: ST Dimensions
Storage Capacity
Figure 1: 30ST, 50ST
(gal.)
T&P Fitting
Supply/
30ST 30 3⁄4'' 2'' 2'' 3⁄4'' 391⁄2'' 20'' 30'' 111⁄16'' 43⁄16'' 150 50ST 50 3⁄4'' 2'' 2'' 3⁄4'' 481⁄2'' 22'' 39'' 111⁄16'' 43⁄16'' 190 80ST 80 1'' 2'' 2'' 3⁄4'' 601⁄2'' 24'' 50'' 21'' 6'' 250 119ST 119 1'' 2'' 2'' 3⁄4'' 651⁄2'' 28'' 54'' 22'' 7'' 385
Page 2 Storage Tanks
Return Fitting
Hot Outlet
Aquastat Fitting
Figure 2: 80ST, 119ST
Dim ensi ons
A
B
C
D
(lbs.)
E
Weight
Aquastat
Connection
Drain Valve
Cleanout Hand-ho
Inlet/Return Connections
ASME Rating Plate
(2) NPT Connection (T&P valves NOT su
Hot Outlet
Anode Rods
Model
2”
Insulation
w/External
Jacket
Storage
(gal)
Working Pressure
Overall
Diameter
T&P Relief
Valve Conn.
Inlet/
Return
Conn.
Hot
Outlet
Conn.
Aquastat
Conn.
Overall
Height/
Length
Shipping
Weight
(lbs)
119ST-A-150 Standard 119 150 28”
1 x 1” NPT
2” 2” ¾” 65½” 385
200ST-A-125 Standard 200 125 34”
2 x 1” NPT
2½” 2½” ¾” 79½” 872
200ST-A-150 Standard 200 150 34”
2 x 1” NPT
2½” 2½” ¾” 79½” 872
Figure 3: ASME Vertical
Table 2: ASME ST Dimensions
Storage Tanks Page 3
WHEN YOU RECEIVE YOUR NEW STORAGE TANK
Check the new equipment to see if all components are in good condition. The T&P valves, aquastat and immersion well are supplied by the installer.
TEMPERATURE CONTROLS
Bock storage tanks are equipped with 3⁄4'' tappings for the installation of immersion temperature controls. Any temperature control approved for use in hot water systems is acceptable. Bock recommends the use of a control with an adjustable differential so that the differential can be adjusted to match that of your heat source controls. Setting the storage tank temperature control 5° lower than the water heater temperature control is also recommended. This is to ensure that when the storage tank calls for heat and the circulator is turned on, the water being circulated is cool enough to cause the water heater to start. If the burner does not start then the circulator could run for long periods of time, wasting energy.
Note: The recommended water temperature for domestic use is 120°. Higher water temperatures can result in scalding. If higher or lower water temperatures are needed, point of use tempering devices are recommended.
T&P VALVES
Temperature and pressure relief valves must be installed on all storage tanks by the installer. All Bock storage tanks are also equipped with 3⁄4'' or 1'' tappings for the installation of properly sized temperature and pressure relief valves. These are located on the side near the top of vertical tanks and on the top surface of horizontal storage tanks. Relief valves are rated for maximum system pressure and temperature as well as Btu input of the heating appliance. This information is normally supplied on a metal tag attached to the end of the valve. For a normal domestic water system maximum system pressure is 150 psi and temperature limit is 210°F. The Btu per hour rating will be listed next to the AGA or CSA logo on the tag under the temperature and pressure data. Be certain to use a relief valve that is rated for the Btu per hour input of the heating appliance. For example, if you are connecting a storage tank to a water heater with a 50,000 Btu per hour input then the relief valve installed in the storage tank must be rated for a minimum of 50,000 Btu per hour.
PIPING
Bock storage tanks are equipped with many different fitting sizes and configurations depending on intended use. However, all storage tanks will have some common features. All Bock storage tanks will have two or more anode rods installed through the top of the storage tank. Bock storage tanks typically have three large tappings, normally 2 inches NPT or larger, in the side of the tank. The exact location of these fittings will vary depending on tank model and any special options ordered. The tapping nearest the bottom of the tank is used as a cold water inlet and/or a connection to return water from the storage tank to the heat source. A second tapping of similar size located higher up the side of the tank is used to return heated water from the heat source. A hot water outlet is located on the top of the tank.
Page 4 Storage Tanks
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