6
Hot water outlet
The next step in the installation process is to connect the hot
water system piping to the hot water outlet port. The hot
water supply tapping is located on top of the tank.
A manual shutoff valve should be installed downstream on
the hot water outlet line as an isolation device in case the
unit must be disconnected from the system. The shutoff
valve should be in the closed position and remain so until the
installation is complete.
Mixing valve
Field supplied. An anti-scald mixing valve is recommended
when storing domestic hot water above 115°F.
Aquastat bulbwell
Review the controls for the hot water source equipment. Some
equipment or systems designs will require an independent
aquastat (field supplied) to control the equipment. The
aquastat may be surface mounted onto the jacket of the
tank or a nearby surface. The water sensing probe may be
installed in the 3/8" diameter dry bulbwell supplied with all
Lochinvar Hot Water Storage Tanks. The equipment may
employ a water sensing thermistor. The thermistor would be
installed into the dry bulbwell and wired back to the hot water
equipment.
2
Installation
WARNING
Before making any connections of water
inlet or outlet to the unit, assure that
all piping is clean and free of foreign
material or scale. This can usually be
accomplished by “blowing out” the pipe.
Any foreign material or scale entering the
unit can adversely affect operation and
performance.
The two (2) tappings on the lower side of the tank shall
provide recirculation between the tank and the water heating
source. See example piping diagram between a storage tank
and an indirect gas fired water heater (FIG. 2-1).
Connecting the hot water source
NOTICE
See the Water Heater’s Installation and
Operation manual for specific piping
diagrams that match the inlet / outlet
water tappings on the tank to the inlet /
outlet water tappings on the water heater.
Tapping locations on the water heater
may vary by product or manufacturer.
Figure 2-1
_Vertical Tank Piping Diagram
FLOW CHECK
VALVE (TYPICAL)
EXPANSION
TANK
THERMOMETER
COLD WATER
SUPPLY
HOT WATER
SUPPLY
BUILDING
RETURN
RELIEF
VALVE
FLOW
SWITCH
WATER
HEATER
CIRCULATOR
STORAGE
TANK
WATER
HEATER
UNION
(TYPICAL)
BALL VALVE
(TYPICAL)
MIXING VALVE
Y-STRAINER
[RECOMMENDED]
IMG00606
NOTICE
For
all
piping connections, the use and /
or type of joint compound or sealer on the
joint should be determined by referring
to local codes, accepted practices, or the
requirements of the installing contractor.
If the cold water supply to the system is equipped with
an in-line check valve or backflow preventer, a suitable
expansion tank must be installed in the cold water supply
line.
Installation and Operation Manual
®
Содержание Lock Temp SJS060
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