TLV SR-B1.5 User manual

172-65603MA-06 (SR-B1.5/SR-B4) 14 February 2020
High-Temperature Waste Water Heat Exchanger
SR-B1.5 / SR-B4
Copyright © 2020 by TLV CO., LTD.
All rights reserved

172-65603MA-06 (SR-B1.5/SR-B4) 14 Feb 2020
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Contents
Introduction ...................................................................................1
Safety Considerations...................................................................2
Product Description.......................................................................4
Intended Use ................................................................................................4
System Principle...........................................................................................5
Specifications................................................................................6
Configuration.................................................................................7
Installation.....................................................................................8
Precautions before Installation......................................................................8
Installation Example for Piping to/from the SR-B Unit ................................10
Piping Installation 1. Blowdown/High-Temp. Water Inlet Piping .................11
Piping Installation 2. Blowdown/High-Temp. Water Outlet, Overflow and
Body Blowdown Piping ...............................................................................12
Piping Installation 3. Exhaust Piping...........................................................13
Piping Installation 4. Boiler Feed Water/Water Inlet and Outlet Piping.......16
Operation....................................................................................17
Inspection and Maintenance .......................................................19
Troubleshooting ..........................................................................20
Product Warranty........................................................................ 21
Introduction
Thank you for purchasing the TLV SR-B high-temperature waste water heat
exchanger.
This product has been thoroughly inspected before being shipped from the
factory. When the product is delivered, before doing anything else, check the
specifications and external appearance to make sure nothing is out of the
ordinary. Also be sure to read this manual carefully before use and follow the
instructions to be sure of using the product properly.
If detailed instructions for special order specifications or options not contained
in this manual are required, please contact TLV for full details.
This instruction manual is intended for use with the model(s) listed on the
front cover. It is necessary not only for installation but for subsequent
maintenance and troubleshooting. Please keep it in a safe place for future
reference.

172-65603MA-06 (SR-B1.5/SR-B4) 14 Feb 2020
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Safety Considerations
Read this section carefully before use and be sure to follow the instructions.
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
The precautions listed in this manual are designed to ensure safety and prevent
equipment damage and personal injury. For situations that may occur as a result
of erroneous handling, three different types of cautionary items are used to
indicate the degree of urgency and the scale of potential damage and danger:
DANGER, WARNING and CAUTION.
The three types of cautionary items above are very important for safety: be sure to
observe all of them as they relate to installation, use, maintenance, and repair.
Furthermore, TLV accepts no responsibility for any accidents or damage occurring
as a result of failure to observe these precautions.
Symbols
Indicates a DANGER, WARNING or CAUTION item.
DANGER
Indicates an urgent situation which poses a threat of death or
serious injury
WARNING
Indicates that there is a potential threat of death or serious injury
CAUTION
Indicates that there is a possibility of injury or equipment /
product damage
CAUTION
Install properly and DO NOT use this product outside the
recommended operating pressure, temperature and other
specification ranges.
Improper use may result in such hazards as damage to the product
or malfunctions that may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
Use hoisting equipment for heavy objects (weighing
approximately 20 kg (44 lb) or more).
Failure to do so may result in back strain or other injury if the object
should fall.
Take measures to prevent people from coming into direct
contact with product outlets.
Failure to do so may result in burns or other injury from the
discharge of fluids.
When disassembling or removing accessories used with the
product, wait until the internal pressure equals atmospheric
pressure and the surface of the product has cooled to room
temperature.
Disassembling or removing accessories from the product when it is
hot or under pressure may lead to discharge of fluids, causing
burns, other injuries or damage.
Continued on the next page

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CAUTION
Be sure to use only the recommended components when
repairing the product, and NEVER attempt to modify the
product in any way.
Failure to observe these precautions may result in damage to the
product and burns or other injury due to malfunction or the
discharge of fluids.
Do not use excessive force when connecting threaded pipes to
the product.
Over-tightening may cause breakage leading to fluid discharge,
which may cause burns or other injury.
In case of unexpected steam flow, connect piping from the
exhaust outlet to a safe area.
Unexpectedly high steam volumes may cause high-temperature
condensate to be discharged through the exhaust outlet, which may
in turn cause burns or other injury.
Operate valves slowly and carefully.
Opening or closing valves too quickly may cause water hammer to
occur, the impact of which could cause damage to equipment.
Use only under conditions in which no freeze-up will occur.
Freezing may damage the product, leading to fluid discharge, which
may cause burns or other injury. If the water seal or inside of the
tube freeze, the inside of the product may be pressurized which
could cause problems on equipment or devices that are connected
to the product.

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Product Description
Intended Use
The SR-B1.5/SR-B4 is a high-temperature waste water heat exchanger for
recovering heat energy from continuously discharged blowdown water from the boiler,
or high-temperature water of 100 C (212 F) or more, which is usually wasted.
By using this product for waste heat recovery, system energy efficiency, work
environment, and plant scenery can be improved without increasing back pressure
on the boiler or equipment.
Usages
High-temp. water generated
by the continuous blowdown
of the boiler
High-temp. condensate of
100 C (212 F) or more for
which the water quality is
inappropriate for condensate
recovery
Waste heat from applications
such as vulcanizers,
sterilizers and autoclaves
NOTE: Limited to applications
with no air or non-
condensable gases.
Improvement effect
Fuel reduction is realized by
exchanging heat between the
continuously discharged
blowdown water from the
boiler and the boiler feed
water to increase the water
supply temperature
Heat cold water for use as hot
water using high-temp.
condensate of 100 C (212 F) or more for which the water quality is
inappropriate for condensate recovery, or waste heat from applications such as
vulcanizers, sterilizers and autoclaves
Improves work environment and plant scenery by eliminating clouds of steam
generated around the plant
Confirm local regulations concerning boiler blowdown before using the product for
this application.
Bad image to
local residents
Bad effect on
building/equipment
from humidity
Continuous blowdown
from the boiler
Eliminate
flash steam Energy-saving
effect Use of
hot water
Continuous blowdown
from the boiler

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System Principle
Because the hot water recovery side of the SR-B1.5/SR-B4 high-temperature waste
water heat exchanger is open to the atmosphere, there is hardly any back-pressure
(maximum 50 mmAq (0.07 psi)) on the boiler or the equipment where the high-temp.
water is generated. For this reason, it can be used without the restrictions of pressure
vessel regulations in most locations. Consult TLV for details.
Concerning the construction of the unit, there is a hot water outlet in the base of the
heat exchanger. This allows a water seal to be maintained which prevents flash
steam leakage. Thus, with a similar construction to closed type heat exchangers, it
can ensure an equivalent level of high efficiency heat exchange.
<Operation flow of high-temperature waste water heat exchanger SR-B1.5/
SR-B4 (hereafter, SR-B)>
①High-temp. water flows into the SR-B
from equipment connected to the
blowdown/high-temp. water inlet.
②High-temp. water and re-evaporated
steam from high-temp. water which has
flowed into the SR-B (shell side)
transfers heat to cold water inside the
heat transfer coil.
③Upon transferring heat the flash steam
that has recondensed and high-temp.
water which has had its sensible heat
consumed drops down to collect in the
base of the SR-B.
Furthermore, since flash steam inside
an airtight space produces a fall in
pressure, the inside of the SR-B is
maintained at atmospheric pressure or
a very slight vacuum (-0.5 kPaG (-7
psi)) which ensures a smooth influx of
high-temp. water.
④High-temperature water accumulated in
the lower part of the tank seals the shell,
and it becomes similar in structure to a
pseudo closed type heat exchanger.
⑤Once high-temp. water flows in and
accumulates up to the water levelfor the
blowdown/high-temp. water outlet shown in
the figure to the right, it will be discharged through the blowdown/high-temp. water outlet.
⑥If the amount of high-temp. water increases such that it cannot be fully
discharged though the blowdown/high-temp. water outlet, and thus accumulates
up to the overflow water level shown in the figure above, it will be discharged from
the overflow outlet.
⑦If the cold water flow rate decreases, or else the ability of the cold water to
absorb heat is surpassed causing a generation of flash steam; even if flash
steam accumulates inside the SR-B and the pressure begins to rise; the instant
that the pressure rises above 0.5 kPaG (7 psi) (a water seal with 50 mm (2 in) of
head pressure) the water seal will be broken and flash steam will be discharged
to the atmosphere through the exhaust outlet. (pressure will not accumulate
inside the unit)
Exhaust
Outlet
Boiler Feed Water/
Hot Water Outlet
Boiler Feed Water/
Cold Water Inlet
Blowdown/
High-temp.
Water Inlet
6
1
2
3
5
4
Blowdown/
High-temp.
Water Outlet
Overflow Water Level
Water Level for
Blowdown/High-temp.
Water Outlet
6
Body
Blowdown
Outlet
Overflow
Outlet

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Specifications
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
CAUTION
Use only under conditions in which no freeze-up will occur. Freezing may
damage the product, leading to fluid discharge, which may cause burns
or other injury. If the water seal or inside of the tube freeze, the inside of the
product may be pressurized which could cause problems on equipment
or devices that are connected to the product.
CAUTION
Refer to the product nameplate or submitted drawings for detailed specifications.
Do not install valves or orifices at the exhaust outlet, since the SR-B is an
atmospheric type heat exchanger.
Specifications
Model
SR-B1.5
SR-B4
Maximum Heat Recovery Capacity*1
Approx. 520 MJ/h
(492,800 BTU/h)
Approx. 1,250 MJ/h
(1,184,800 BTU/h)
Maximum Blowdown/High-temp. Water Flow Rate*2
1,000 kg/h*3
(2,200 lb/h)
2,400 kg/h*3
(5,290 lb/h)
Heat Transfer Surface Area
Approx. 2.0 m2
(22.6 ft2)
Approx. 5.4 m2
(64.5 ft2)
Standard Material
Body
Stainless Steel SUS304 (ASI304)
Heat Transfer Coil
Maximum Operating
Pressure (PMO)
Body (Shell Side)
0 MPaG (0 psig)*4
Coil (Tube Side)
1.0 MPaG (150 psig)
Maximum Operating
Temperature (TMO)
Body (Shell Side)
100 C (212 F)*4
Coil (Tube Side)
100 C (212 F)
Maximum Allowable
Pressure (PMA)*5
Body (Shell Side)
0.5. MPaG (75 psig)
Coil (Tube Side)
2.0 MPaG (285 psig)
Maximum Allowable
Temperature (TMA)*5
Body (Shell Side)
158 C (316 F)
Coil (Tube Side)
180 C (356 F)
Maximum OperatingBoilerFeedWater/WaterPressure
1.0 MPaG (150 psig)
MaximumOperatingBoilerFeedWater/WaterTemperature
100 C (212 F)
*1: During heat exchange with blowdown water or high-temp. water at 160 C (320 F) and
boiler feed water or cold water at 20 C (68 F).
*2: The amount of blowdown water and high-temp. water before re-evaporation.
*3: When boiler feed water/cold water temperature is at 20 C (68 F).
*4: Even if the pressure and temperature of the blowdown/high-temp. water before re-
evaporation exceeds the PMO/TMO, the inside of the body of the heat exchanger will be at
nearly atmospheric pressure and 100 C (212 F) or less as long as the pressure and
temperature does not exceed the maximum processing rate.
*5: Maximum Allowable Pressure (PMA) and Maximum Allowable Temperature (TMA) are
PRESSURE SHELL DESIGN CONDITIONS, NOT OPERATING CONDITIONS.
Connections
Model
Pipe Diameter (mm (in))/Connections
Weight (kg (lb))
Blowdown/
High-temp.
Water Inlet
Blowdown/
High-temp.
Water
Outlet
Overflow
Outlet
Body
Blowdown
Outlet
Boiler Feed
Water/Cold
Water Inlet
Hot Water
Outlet
Exhaust
Outlet
Tank
Empty
Tank
Full
SR-B1.5
80 (3)
25 (1)
Rc(PT)1
NPT1
50 (2)
JIS10KFF
ASME150RF
25 (1)
Rc(PT)1
NPT1
20 (3/4)
150 (6)
Duct nipple
installable
Approx.
140
(310)
Approx.
210
(470)
JIS10KFF
ASME150RF
Rc(PT)3/4
NPT3/4
SR-B4
150 (6)
40 (11/2)
Rc(PT)11/2
NPT11/2
40 (11/2)
Approx.
250
(550)
Approx.
370
(820)
JIS10KFF
ASME150RF
Rc(PT)11/2
NPT11/2

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Dimensions (Unit: mm (in))
Model
L1
L2
L3
H
H1
H2
H3
H4
H5
H6
W1
W2
W3
SR-B1.5
370
(149/16)
420
(169/16)
420
(169/16)
1300
(513/16)
1280
(503/8)
1100
(435/16)
715
(281/8)
200
(77/8)
200
(77/8)
160
(65/16)
426
(163/4)
300
(1113/16)
260
(101/4)
SR-B4
420
(169/16)
515
(201/4)
500
(1911/16)
1800
(707/8)
1790
(701/2)
1550
(61)
900
(357/16)
320
(125/8)
350
(133/4)
320
(125/8)
528
(2013/16)
350
(133/4)
310
(123/16)
H2 H
Inspection
Opening
Exhaust Outlet
Body Blowdown Outlet
Overflow Outlet
Blowdown/High-temp.
Water Inlet
Approx.
L1 Approx.
L2
Approx.
L3
W1
W2
Approx.
W3
H1
H4 H6
H3
H5
Boiler Feed Water/
Hot Water Outlet
Boiler Feed Water/
Cold Water Inlet
Blowdown/
High-temp.
Water Outlet
Configuration
SR-B1.5/SR-B4
<Appearance>
Inspection
Opening
Nameplate
Body
Exhaust Outlet
(Duct Nipple installable)
Boiler Feed Water/
Hot Water
Outlet
Boiler Feed Water/
Cold Water
Inlet Body Blowdown
Outlet
Blowdown/High-temp.
Water Outlet
Overflow Outlet
<Internal Construction>
Heat
Transfer
Coil
The figure above shows the SR-B1.5.
The internal configuration of the SR-
B4 differs slightly from SR-B1.5.

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Installation
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
CAUTION
In case of unexpected steam flow, connect piping from the exhaust
outlet to a safe area. Unexpectedly high steam volumes may cause
high-temperature condensate to be discharged through he exhaust
outlet, which may in turn cause burns or other injury.
CAUTION
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
Do not use excessive force when connecting threaded pipes to the
product. Over-tightening may cause breakage leading to fluid
discharge, which may cause burns or other injury.
CAUTION
Precautions before Installation
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
For the specific installation location of the SR-B, carefully consult the user.
Confirm following items for the installation.
1. Before installing the SR-B, carefully discuss and ensure the installation and
piping method.
2. Do not install the SR-B near a stairway or emergency exit.
3. The surface for installation of the SR-B should be sturdy and horizontal.
As the SR-B is heavy equipment, anchor the legs securely on a strong and
horizontal foundation using the anchor bolts. (Dimension of anchor bolts: M16)
(Refer to the illustration on the next page regarding the position for anchor bolts
and number of anchor bolts required.)
4. For cases where people or products may come in contact with the SR-B unit, any
safety measures, such as insulation or isolation, should be implemented to
prevent injury.
Even if such contact is unlikely, it is recommended that the SR-B unit be as well
insulted as possible to increase heat efficiency.
5. Maintenance space should be secured.
Although the SR-B cannot be disassembled, maintenance space should be
secured for valves, etc.
(Refer to the illustration on the next page regarding maintenance space.)
6. If the SR-B is installed at height, make sure to install the SR-B such that there is
enough space to carry out maintenance work etc. with anti-drop measures such
as handrails having been implemented. We may not be able to perform technical
support service in a location where work cannot be safely carried out.

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Model
Position for anchor bolts
Maintenance Space (Unit: mm (in))
SR-B1.5
120
120

PCD420
3  o19 bolt hole
/
3  o19 bolt hole
/
Anchor bolts:
M16
Total length: 80 mm (31/8in)
3 pcs.
Approx. 2000
800
800800
Approx. 2000
Approx. 800 mm (2.6 ft)
Approx. 2000 mm (6.6 ft)
SR-B4
3  o19 bolt hole
/
3  o19 bolt hole
/
120
120

PCD520
Anchor bolts:
M16
Total length: 220 mm (85/8in)
3 pcs.
Approx. 2000
750
750750Approx. 2000
Approx. 750 mm (2.5 ft)
Approx. 2000 mm (6.6 ft)
NOTE: Anchor bolts are selected with standard seismic intensity: 1, and horizontal
seismic coefficient: 1.

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Installation Example for Piping to/from the SR-B Unit
Please carefully refer to the "Piping Installation" section described on the following
pages for important points regarding piping arrangements.
ＳＲ
Boiler Feed Water/
Water Inlet/Outlet Piping
See “Piping Installation 4
Blowdown/High-Temp. Water Inlet Piping
See “Piping Installation 1”
Exhaust Piping
See “Piping Installation 3
Blowdown/
High-Temp.
Water Outlet,
Overflow and
Body
Blowdown
Piping
See “Piping
Installation 2”
Blowdown/High-Temp.
Water Outlet
Pipe the
discharge to a
safe area
such as a pit.
Pipe the discharge to a
safe area such as a pit.
Body Blowdown Outlet
Overflow Outlet
Boiler Feed Water/
Cold Water Inlet
Boiler Feed Water/
Hot Water Outlet
SR-B

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Piping Installation 1. Blowdown/High-Temp. Water Inlet Piping
Make sure that the blowdown/high-temp. water
piping to the SR-B is installed with no
condensate accumulation points (places where
piping rises or falls).
(This may cause pipe corrosion, water hammer
or an increase in back pressure.)
SR-B
Blowdown/
High-temp.
Water Inlet
Other cautions
The piping diameter should be sized so that the flow velocity of blowdown/high-temp.
water is approximately 3 m/sec (9.8 ft/sec).
To handle blowdown/high-temp. water without applying back pressure on the boiler
or the equipment where high-temp. water is generated, it is recommended that the
piping be of the same diameter as the SR-B blowdown/high-temp. water inlet piping
(SR-B1.5: 80 mm (3 in), SR-B4: 150 mm (6 in)). Contact TLV if you wish to change
the size of the blowdown/high-temp. water inlet piping.

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Piping Installation 2. Blowdown/High-Temp. Water Outlet, Overflow and
Body Blowdown Piping
- Install separate blowdown/high-temp. water
outlet piping, overflow piping and body
blowdown piping leading to a safe area such
as a pit .
- If the piping to the pit is long, operation will not
be affected even if the blowdown/high-temp.
water outlet piping or body blowdown piping is
connected to the overflow piping.
NOTE:
- If the blowdown/high-temp. water outlet piping
is connected to the overflow piping, it will not
be possible to judge the operating status from
the discharge conditions at the piping outlet.
- If the body blowdown piping is connected to
the overflow piping, there are risks such as
forgetting to close the valve, delays in
discovering failures, the accumulated scale in
the SR-B flowing into the overflow piping at the
time of condensate
blowdown, etc.
Blowdown/High-Temp.
Water Outlet
Body
Blowdown
Overflow
ＳＲ-B
冷水入口
温水出口 (温水量先まで
ＳＲ-B
冷水入口
温水出口 (温水量先まで
ＳＲ-B
冷水入口
温水出口 (温水量先まで
ＳＲ-B
冷水入口
温水出口 (温水量先まで
Make sure that the blowdown/
high-temp. water outlet piping and
the overflow piping from the SR-B
is installed without any rise in the
piping as the back pressure could
interfere with the normal operation
of the SR-B.
Install piping from the
blowdown/ high-temp. water
outlet, overflow outlet, and
body blowdown outlet to a safe
area such as a pit where
people will not come into
contact with discharged high-
temp. water or flash steam.
Discharge of high-temp. water
or flash steam may cause
burns or other injury.
Make sure that the body blowdown piping from the SR-B is
installed without any rise in the piping as it could interfere
with the body blowdown.
Pipe the discharge
to a safe area such
as a pit.
Body Blowdown
Outlet
SR-B
Blowdown/
High-Temp.
Water Outlet
Overflow
Outlet
Other cautions
When back pressure is applied to the SR-B, it also affects the upstream equipment
from which blowdown/high-temp. water is recovered.
Even though piping with the same diameter as the overflow piping and blowdown/high-
temp. water outlet piping of the SR-B is recommended to prevent back pressure from
being applied to the SR-B, it is possible to use a smaller pipe diameter depending on the
length of the pipe to the pit or discharge destination. Suggested diameters for the
overflow piping and blowdown/high-temp. water outlet piping are as follows:
When the valve is installed at the overflow piping or at the blowdown/high-temp.
water outlet piping, make sure to use either a full-bore ball valve or a gate valve so
that back pressure does not interfere with the operation of the SR-B.
Pipe Length to Pit or Recovery
Destination
Less than
10 m (33 ft)
10 m to 50 m
(33 ft to 164 ft)
Greater than
50 m (164 ft)
Outlet Pipe Diameter (SR-B1.5)
25 mm (1 in)
40 mm (11/2in)
50 mm (2 in)
Outlet Pipe Diameter (SR-B4)
40 mm (11/2in)
50 mm (2 in)
65 mm (21/2in)

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Piping Installation 3. Exhaust Piping
If condensate or flash steam blows
out from the exhaust outlet it can
cause burns or other injury, so install
piping from the exhaust outlet to a
safe area such as a pit where people
will not come into contact with it.
Do not install obstructions on the exhaust
piping such as valves, check valves, or
orifices which may create a rise in
pressure within the SR-B.
Duct piping material should be used for the
exhaust outlet piping.
Please strictly follow the precautions in the
“<About exhaust outlet/option>”on the
following page when steel piping is installed.
Make sure that the exhaust piping is installed
without any rise or fall in the piping which
might cause a water seal to form.
(Eliminate causes of back pressure and
water hammer.)
Pipe the discharge to a
safe area such as a pit.
Duct Piping
Material
Exhaust
Outlet
Other cautions
Be certain to connect exhaust piping to protect against instances of unexpectedly
high-volume blowdown /high-temp. water flow into the SR-B, which may cause flash
steam and hot water to be discharged.
When back pressure is applied to the SR-B, it also affects the boiler or the
equipment where high-temp. water is generated.
To prevent putting back-pressure on the boiler or the equipment where high-temp.
water is generated, make exhaust piping as large in diameter, short, and with as few
bends as possible.
Even though piping with the same diameter as the exhaust piping of the SR-B is
recommended to prevent putting back pressure on the SR-B, it is possible to use a
smaller pipe diameter depending on the length of the pipe to the pit or recovery
destination.
Suggested diameters for the exhaust piping are as follows:
Model
Length & Diameter of Exhaust Piping
Less than
10 m (33 ft)
10 m to 20 m
(33 ft to 66 ft)
20 m to 30 m
(66 ft to 98 ft)
Greater than
30 m (98 ft)
SR-B1.5
50 mm (2 in)
80 mm (3 in)
100 mm (4 in)
150 mm (6 in)
SR-B4
80 mm (3 in)
100 mm (4 in)
150 mm (6 in)

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<Connecting the duct piping to the exhaust outlet>
The standard connection specification of the exhaust outlet for the SR-B is “duct
piping installable”.
Nipple fittings should be used to connect the SR-B and the piping, making sure that
there is no leakage.
<Piping example>
①All duct piping should withstand high temperatures of 100 C (212 F).
Coat the nipple with duct sealant.
②Insert the nipple into the SR-B, then the duct piping into the nipple.
After everything is set in place, fix with screws (screw holes on the SR-B: M5
2 places).
③After fixing with screws, wrap with two or three layers of tape that can withstand
the required heat.



<About exhaust outlet / options>
The exhaust outlet of the SR-B can be produced with a flange connection as an
option.
However, specification changes after delivery cannot be accepted.
The exhaust piping should be supported firmly, making sure to avoid excessive
force on the SR-B.(Excessive force may lead to damage to the SR-B.)
<Flange shape diagram>
SR-B1.5/SR-B4
Nominal diameter: 150
(6 in)
<In cases where the piping is welded directly to the exhaust outlet>
C3 chamfering has been performed on the exhaust outlet. When welding is
performed on the exhaust outlet, the connecting tube should also be chamfered and
butt welded. Furthermore, the piping thickness of the exhaust outlet will be “Sch40”.

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Screw holes on the exhaust port
Two M5-sized screw holesare opened on
either side of the exhaust port, intended
for use with the standard duct connection.
When the optional flange connection is
selected, these holes are sealed by
welding.
When the product is operating normally,
neither condensate nor steam will flow into
the exhaust pipe. If condensate or steam
are discharged from the exhaust pipe, it
indicates that the product is not operating
normally. In order to detect abnormalities
early on, install a pipe for checking
abnormalities, as close to the exhaust port
as possible so that condensate or steam
do not flow into the exhaust pipe.
Make sure that the pipe diameter is
smaller than the exhaust pipe diameter.
If the pipe diameter is the same as or
larger than the exhaust pipe diameter,
there may be a possibility of steam will
flow into the pipe.

172-65603MA-06 (SR-B1.5/SR-B4) 14 Feb 2020
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Piping Installation 4. Boiler Feed Water/Water Inlet and Outlet Piping
ＳＲ-B
ドレン出口
ドレンブロー口
ＳＲ-B
ドレン出口
ドレンブロー口
ＳＲ-B
ドレン出口
ドレンブロー口
ＳＲ-B
ドレン出口
ドレンブロー口
When a control valve or an automatic
ON/OFF valve is installed at the boiler
feed water or hot/cold water inlet/outlet
of the SR-B, use a type of valve that
takes more than 1 second to
open/close instead of a rapid
opening/closing valve (such as
solenoid valves).
Water hammer caused by rapid water
flow/stopping can occur at the heat
exchanger and there is a possibility of
damage to the equipment.
Do not remove the equipped valve.
SR-B
Boiler Feed Water/
Hot Water Outlet
Boiler Feed
Water/
Cold Water
Inlet
Other cautions
Connect the cold water piping to the cold water inlet, and connect return piping from
the hot water outlet to an area where the hot water can be utilized. To secure an
adequate amount of cold feed water, make sure that the hydraulic pressure
differential (pressure differential between inlet and outlet) is at least equal to the
values in the following table. However, the water pressure must not exceed the
maximum operating water pressure of 1.0 MPaG (150 psig).
Required Cold Water (t/h)
1
2
3
4
5
6
8
10
Hydraulic Pressure
Differential (MPa)
SR-B1.5
0.03
0.11
0.23
0.40
0.62
—
—
—
SR-B4
—
—
0.03
0.05
0.07
0.10
0.17
0.27
(1 MPa = 10.197 kg/cm2)
Required Cold Water (lb/h)
2000
4000
6000
8000
10000
12000
16000
20000
Hydraulic Pressure
Differential (psi)
SR-B1.5
3.6
12.9
27.8
48.2
74.0
—
—
—
SR-B4
—
—
3.4
5.8
8.7
12.3
21.2
32.4
The diameter of the pipe before and after the SR-B varies with the required amount of
cold water, and it should be sized so that the velocity of cold water is 2 to 3 m/sec (6.6
to 9.8 ft/sec). Suggested diameters for the cold water inlet and hot water outlet piping
are as follows:
Water Flow (t/h)
1
2
3
4
5
6
7
8
10
Pipe Diameter (mm)
15
15
20
25
25
32
32
32
40
Water Flow (lb/h)
2000
4000
6000
8000
10000
12000
1400
0
16000
20000
Pipe Diameter (in)
1/2
1/2
3/4
1
1
11/4
11/4
11/4
11/2

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Operation
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations
may restrict the use of this product to below the conditions quoted.
CAUTION
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from the
discharge of fluids.
CAUTION
Operate valve slowly and carefully. Opening or closing valves too quickly
may cause water hammer to occur, the impact of which could cause
damage to equipment.
CAUTION
<To be performed after installation and before initial operation>
Make sure to flush the piping to remove welding slag, metal powder and filings.
Make sure that flange bolts etc. are securely tightened before passing steam/
water through the SR-B.
When conducting the test operation, start with a low water flow rate and gradually
increase the load to normal operating conditions. If you start with a normal operating
load at the outset and there is a leak somewhere in the piping, there is a risk of high-
temp. water, boiler feed water or hot water blowing out.
<Startup>
Make sure that the boiler feed water/cold water inlet valve (A) and boiler feed
water/hot water outlet valve (B) are open before supplying blowdown/high-
temperature water to the SR-B.
If blowdown/high-temperature water is supplied while the boiler feed water/cold water
inlet valve (A) and boiler feed water/hot water outlet valve (B) are closed, the
pressure inside the coil will increase due to volume expansion, which could damage
the boiler feed water/cold water inlet valve (A) and boiler feed water/hot water outlet
valve (B).
1. Make sure that the body blowdown valve
(D) in the base of the SR-B is closed.
2. Open the boiler feed
water/cold water inlet valve
(A) and boiler feed water/hot
water outlet valve (B),
allowing boiler feed water or
cold water to pass through
the SR-B. In cases where
either TIC (temperature
control of heated water) or
FIC (flow control of heated
water) is used, start up the
controls.
3. Open any valves downstream
from the blowdown/high-temp.
water outlet valve (C), if any.
4. Open the blowdown/high-
temp. water inlet valve, if any.
A
Boiler feed water/cold water inlet valve
B
Boiler feed water/hot water outlet valve
C
Blowdown/high-temp. water outlet valve
D
Body blowdown valve
Blowdown/
high-temp.
water inlet
Exhaust outlet
Body blowdown outlet
Overflow outlet
Blowdown/high-temp.
water outlet
Inspection opening
Boiler feed water/
hot water outlet
Boiler feed water/
cold water inlet
AD
C
B

172-65603MA-06 (SR-B1.5/SR-B4) 14 Feb 2020
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5. Startup the equipment to allow blowdown/high-temp. water to enter the SR-B.
Make sure that there are no abnormal discharges from the exhaust outlet, such
as high-temp. water. If there is high-temp. water blowing, or an abnormal sound
or vibration, halt operation immediately.
The first time you operate the SR-B, or when operating with the body blowdown
valve (D) open, flash steam may be discharged to the atmosphere through the
exhaust outlet immediately after initiating operation, due to the lack of pooled high-
temp. water in the base to create an airtight water seal over the condensate outlet.
(if flash steam blow stops shortly then everything is normal)
<Shutdown>
1. Stop the equipment, making sure that there is no flow of high-temp. water.
2. Close the boiler feed water/cold water inlet valve (A) and boiler feed water/hot
water outlet valve (B) to stop the inflow of boiler feed water or cold water. At this
point, make sure to close the valve slowly not rapidly. (If the valve is closed
rapidly, water hammer will occur, resulting in impacts to the SR-B and the
surrounding piping.)
3. When the SR-B is to be shutdown for long periods of time, discharge all
blowdown/high-temp. water by opening the body blowdown valve (D) at the
bottom of the body.

172-65603MA-06 (SR-B1.5/SR-B4) 14 Feb 2020
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Inspection and Maintenance
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
Be sure to use only the recommended components when repairing the
product, and NEVER attempt to modify the product in any way. Failure to
observe these precautions may result in damage to the product or burns
or other injury due to malfunction or the discharge of fluids.
CAUTION
As the SR-B is an atmospheric type heat exchanger, there is no particular need to
perform the kind of maintenance inspections required for pressure vessels.
However, if the heat exchanging performance declines, verify that the boiler feed
water/cold water and blowdown/high-temp. water flow quantities are in compliance
with the rated capacities. If they are not in compliance, correct the flow quantities. If
there are no irregularities with the flow quantities, perform the following inspection:
Annual inspection and cleaning is recommended to prolong the product’s service life.
<Inspection at boiler feed water/hot-cold water side>
1. Perform a reverse-flow chemical cleaning by pouring cleaning solution in through
the boiler feed water/hot water outlet valve on the SR-B, then discharging the
solution through the cold water inlet valve.
<Inspection at blowdown/high-temp. water side>
1. Remove the plug from the inspection opening and check the condition inside the tank.
2. If the inspection reveals heavy grime, close the blowdown/high-temp. water outlet,
body blowdown outlet, and overflow outlet and perform chemical cleaning by
pouring cleaning solution through the exhaust outlet of the SR-B.
Rc(PT) 2
Inspection
Opening