NTI S80, S120, S50, S80SR, S120SR Installation And Operation Instructions Manual
...
Trin & Stor
Model Numbers: S, S-SR, SL Series
Version Date: 2014-08-06
30 Stonegate Dr.
Saint John, NB
E2H 0A4 Canada
INDIRECT WATER HEATERS
INSTALLATION AND OPERATION INSTRUCTIONS
To be installed in conjunction with an NTI Boiler
TABLE OF CONTENTS
Trin & Stor Specifications .................................................................................................... 2
Solar Certifications and Approvals ....................................................................................... 2
I.O.M. Checklists .................................................................................................................. 3
Domestic Side Piping ........................................................................................................... 7
Boiler System Piping ............................................................................................................ 9
Solar System Piping .............................................................................................................. 9
HAZARD SYMBOLS AND DEFINITIONS
Danger Sign: Indicates a hazardous situation which, if not avoided, will
result in serious injury or death.
Warning Sign: Indicates a hazardous situation which, if not avoided,
could result in serious injury or death.
Caution Sign plus Safety Alert Symbol: Indicates a hazardous situation
which, if not avoided, could result in minor or moderate injury.
Caution Sign without Safety Alert Symbol: Indicates a hazardous
situation which, if not avoided, could result in property damage.
Notice Sign: Indicates a hazardous situation which, if not avoided,
could result in property damage.
This Indirect Water Heater must be installed by a licensed and trained
Heating Technician or the Warranty is Void. Failure to properly
install this unit may result in property damage, serious injury to occupants, or possibly death.
NEW PRODUCT LINE
Indirect Water Heaters
Stainless Steel
Stainless Steel Solar
Stone Lined
S-SR Series
S Series
SL Series
NTI 84230
2
Model
Storage
Capacity
USG (L)
Type
Weight (lbs)
Hour 1 Recovery 3
(Gal @ Outlet Temp)
Boiler
Output
(MBH)
Coil Flow
Rate
(GPM)
Coil
Drop
(Feet)
Continuous Rate
(GPH @ Outlet Temp)
Empty
Filled 1
140 F
115 F
140 F
115 F
S40
40 (150)
Stainless
Steel
Indirect
71
485
228
303
146
6.9
1.0
196
271
S50
53 (200)
90
655
238
313
146
6.9
1.0
196
271
S80
79 (300)
115
995
356
468
210
10.4
3.0
292
404
S120
119 (450)
157
1275
485
636
290
13.6
5.0
392
542
S80SR
79 (300)
Stainless
Steel
Solar
Indirect
118
840
157 Upper
214 Upper
220
10.4
4.6
182 Upper
291 Upper
166 Lower
274 Lower
4.8
193 Lower
307 Lower
S120SR
119 (450)
177
1190
167 Upper
239 Upper
290
13.6
7.6
194 Upper
310 Upper
177 Lower
274 Lower
8.0
205 Lower
328 Lower
SL35
35 (130)
Stone
Lined
Indirect
185
477
230
300
150
6.0
7.0
195
265
SL50
50 (190)
238
656
250
320
150
6.0
7.0
200
270
SL70
70 (265)
290
875
270
340
150
6.0
7.0
200
270
Notes:
1
Ensure the location chosen for the tank is capable of supporting the tank when filled with water.
2
Refer to Table 1-3 for a list of considerations when selecting a location for the tank.
3
Hour 1 Recovery based on 50oF inlet water temperature and 200oF boiler water outlet temperature.
Attribute
S Series
S-SR Series
SL Series
Tank 1
stainless steel
stainless steel
stone lined
Coil
stainless steel
stainless steel
copper finned
Insulation
EPS foam
EPS foam
EPS foam
Jacket
grey plastic
grey plastic
grey plastic
Recommended
Service
Clearances
top
12"
top
12"
Top
36"
connection side
12"
connection side
12"
connection side
12"
boiler connections
as required
boiler connections
as required
boiler connections
as required
MAWP
150 psi
MAWP
150 psi
MAWP
150 psi
Restrictions
Max tank temp
190oF
Max tank temp
190oF
Max tank temp
190oF
Max boiler temp
210oF
Max boiler temp
210oF
Max boiler temp
210oF
Notes:
1
Water used in the tank must meet the water chemistry limits specified in Table 2-1. Levels outside the limits may
corrode the tank and shorten its life resulting in damage to tanks and voiding the warranty.
Trin & Stor │ Installation and Operation Instructions Indirect Water Heaters
1.0 INTRODUCTION
Trin & Stor Specifications
NTI offers three (3) diversified series of Indirect Water Heaters: "S" Series consists of a high performance
stainless steel tank and heat exchanger coil, "SL" Series offers a high mass stone lined tank and finned copper
heat exchanger coil, and "S-SR" Series consists of a stainless steel tank with dual heat exchanger coils. The S-SR
is a multipurpose tank for use in many applications. For example, S-SR is equipped with a Solar Domestic Hot
Water backup via a second heat exchanger coil for boiler supply connections ("S-SR" models). It can also be
used as: a single boiler as a normal indirect, or with a second boiler for increased recovery rate.
Solar Certifications and Approvals
S80SR and S120SR, when properly installed and maintained as per this manual and the Sol-R-Therm System
manual, meet the minimum standards established by US Standard SRCC OG-300 and Canadian Standard
CAN/CSA F-379.1-09 for packaged solar domestic hot water systems. See NTI Sol-R-Therm System, Packages
SRT-Pk1 and SRT-Pk2.
Table 1-1 Indirect Water Heater Specifications
Table 1-2 Indirect Water Heater Characteristics
Indirect Water Heaters Installation and Operation Instructions │Trin & Stor
3
Part No.
Description
S Series
S-SR Series
SL Series
S40
Indirect Water Heater, Stainless Steel
1 - -
S50
S80
S120
S80SR
Indirect Water Heater, Stainless Steel - Solar
- 1 -
S120SR
SL35
Indirect Water Heater, Stone Lined
- - 1
SL50
SL70
84156
Temperature and Pressure Relief Valve, 150psi
1 1 1
84632
Tank Sensor
1
See Note 1
1
84158
TPI Control Thermostat
1 1 1
-
Plastic lid, screws, and insulation
- - 1
-
Brass tee, ¾ " x ¾ " x ¾ "
- - 1
Notes:
1
All NTI Indirect Water Heaters come standard with a Tank Sensor (not applicable for solar applications).
Table 1-3 Trin & Stor System Contents
Parts and Service - See Table 1-3 for a list of components included with each tank and Table 6-1 for replacement
parts. For inside sales or technical support, contact NTI by email at info@nythermal.com or call toll free 1-800688-2575.
Warranty Registration - Trin & Stor tanks have a Limited Lifetime Warranty. A separate Warranty Card is
shipped with the tank and packaged with the manual kit. The warranty card explains the coverage options, terms
and conditions, actions required to register the warranty, and what to do in the case of a warranty service problem.
I.O.M. Checklists
The various Installation, Operation and Maintenance (IOM) Checklists contained in this manual are meant to be
read in conjunction with the details, drawings and safety information to ensure a complete and proper installation.
Pre-Installation Checklist
Inspection and Preparation
1. Remove packaging. Inspect for damage during shipping.
2. Verify package contents as per Table 1-3.
3. Review system specifications and characteristics.
4. Read the Water Chemistry and Warranty requirements.
Locating the Tank
1. Solid foundation, dry location, near boiler.
2. Leave room to service water heater and controls (coil can be removed from the top of the "SL" series tanks).
3. Sufficient room for boiler piping and servicing boiler.
4. Area free of flammable liquids or combustible vapors.
5. Install where leaks will not damage property.
6. Locate in room where temperature never drops below 50oF (10oC).
Building Interface Requirements
Penetrations through which piping or wiring is passed shall not:
1. Reduce or impair the function or structural integrity of the enclosure.
2. Work shall be performed in accordance with applicable standards, ordinances, and local codes.
Water Damage Protection
1. If the area around the tank location is susceptible to water damage, install a catch pan c/w drain under the tank.
2. Make provisions to protect the surrounding area from water damage should a leak occur from the tank, fitting
connections, or relief valve.
4
Trin & Stor │ Installation and Operation Instructions Indirect Water Heaters
General Installation Requirements
Generalized instruction and procedures cannot anticipate all situations. For this reason, only a qualified installer
should perform the installation.
Users Responsibility – This manufacturer anticipates the proper installation and care in use of the product. As
with any hot water system, there is a risk of property damage and personal injury inherent in the use. NTI cannot
supervise the installation and therefore makes it a specific condition for the warranty that the customer will
supervise the installation and use of the product to be sure they are performed in accordance with the instructions
and I.O.M. Checklists in this manual. It is the User’s responsibility to maintain the appliance by having it
inspected on an annual basis, serviced as required, and to use the product for the purpose it was intended.
Installers Responsibility – A qualified installer is a licensed person who has appropriate training and a working
knowledge of the applicable codes, regulations, tools, equipment and methods necessary to install an indirect
water heater. The Installer assumes all responsibility for a safe installation and that it meets the requirements of
this document, as well as National and local codes.
Consider the following when selecting a location for the Indirect Water Heater: All tanks will eventually leak at
some unpredictable time, so take precautions and use a catch pan with a drain beneath the water heater to contain
potential leaks or install the tank in a location not susceptible to water damage. Do not install near a wood stove
where excessive heat could melt the water heater’s plastic jacket. Boiler supply piping, floor drain locations,
relief valve discharge will also need to be considered before selecting a location.
Scope of Instruction - This document pertains to the correct installation and operation
of the NTI Trin & Stor Indirect Water Heater line, exclusively series "S" and "SL". This
manual DOES NOT provide installation instructions for heating system boilers; therefore, installers must refer
to the boiler manufacturers instructions for boiler installation procedures.
heater in operation again until it has been thoroughly checked by qualified service personnel.
there is a risk of property damage in the event of an eventual leak at some unpredictable time.
damage, serious injury or death.
Failure to follow the instructions outlined in this document will result in property damage, serious injury or death.
Emergency Situation - Should the water heater be subject to flood, fire or other
damaging conditions, turn the power and water to the heater off. DO NOT place water
Raised Tank - Support the entire tank bottom with ¾" plywood (min) if elevating
off the floor with blocks.
Code Requirements - The installation of your NTI Trin & Stor Indirect Water Heater
must conform to the requirements in this manual, as well as National and local codes.
Safe Location - DO NOT install indirect water heater close to any high temperature
appliances or wood stoves as the water heater jacket is combustible. Do not install where
Annual Service - Failure to have the Indirect Water Heater properly serviced and
inspected on a regular basis by a qualified service technician may result in property
Flammable Vapors - DO NOT install this appliance in any location where gasoline,
flammable vapors or air-born contaminants are likely to be present.
Warranty Requirements - Improper installation, use, neglect or abuse of this product
may not only jeopardize the safe operation of this appliance but also void the warranty.
Be Informed - Read and understand this manual prior to proceeding with the installation
of the Trin & Stor Indirect Water Heater and the potential hazards associated with DHW.
5
Indirect Water Heaters Installation and Operation Instructions │Trin & Stor
Safe Temperatures for Potable Water
Two factors used to determine safe hot water temperatures are Legionella and scalding. Potable water needs to
be stored at temperatures hot enough to limit the growth of Legionella, yet be cool enough to prevent scalding.
Since both hazards present a potential risk to the user, they must be monitored and controlled. Table 1-4
indicates how water temperature affects Legionella bacteria and contributes to scald injury. Use of a thermostatic
mixing valve in the indirect water heater plumbing system can help protect against both of these hazards. By
storing potable water at higher temperatures, bacteria growth is controlled, while still providing high temperature
water for dishwasher applications and low temperature water for bathing. Before proceeding, read the following
carefully and take all necessary precautions to avoid potential illness and/or injury that can result from
Legionella or scalding hazards.
Legionella Hazard - This bacteria is naturally occurring in surface water and ponds. It
can also be found in man-made water systems around the world such as water storage
tanks, water distribution systems, fountains, hot tubs, humidification systems, refrigeration systems and grocery
produce misters. Health authorities agree that Legionella bacteria most often enter the lungs due to aspiration
when contaminated water spray is breathed in as opposed to ingesting drinking water contaminated with the
bacteria. Typical illnesses attributed to Legionella include flue like symptoms (Pontiac Fever) and a potentially
fatal type of pneumonia (Legionnaires’ disease). Failure to follow instructions may result in illness or death.
Contributing Factors to Legionella - Experts acknowledge that Legionella is an identified risk in most water
systems. Although eradicating Legionella is improbable, precautions can be taken to control and monitor
conditions that promote bacteria growth. According to the World Health Organization (WHO); American
Society of Heating, Refrigeration, and Air-conditioning Engineers (ASHRAE); Canada Safety Council (CSC);
and Centers for Disease Control (CDC), contributing factors to the growth of Legionella in potable water
systems include:
Minerals and nutrients present in the source water and systems materials
Stagnation or low flow characteristic of dead ends in distribution piping systems and storage tanks
Scale, corrosion, and bio film
Tepid water in cold water lines
Water storage temperatures optimal for bacteria growth
Chlorine concentration
Scald Hazard - Hotter water increases the risk of scald injury. There is a hot water scald
potential if the storage tank thermostat is set too high. Before changing the temperature
setting on the tank thermostat, refer to the thermostat manufacturers recommended settings. Failure to follow
these instructions may result in serious injury or death.
A scald injury can occur when hot steam or liquid makes contact with one or more layers
of skin. Scald severity (degree of burn) is directly impacted by exposure time and
temperature. Refer to Table 1-4. The following basic precautions are common sense:
Young children and elderly adults burn more quickly and should use cooler water.
Never leave a child alone while drawing water in a bathtub.
Test the water temperature before bathing or showering.
Turn cold water on first, then add hot water until the temperature is comfortable.
Thermostatic Mixing Valve - When the system requires water at temperatures higher
than required for other uses, such as high temperature applications typically greater than
46oC (115oF), a means such as a thermostatic mixing valve shall be installed to temper the water for those uses
in order to reduce scald hazard potential. Anit-scald devices such as a thermostatic mixing valve allows potable
water to be stored at a higher temperature to limit bacteria growth, and allows water at the tap to be delivered at
a lower temperature to prevent scalds. Failure to follow these instructions may result in serious injury or death.
6
Water Temperature 1
Legionella Bacteria 1
Water Temperature
2,5
Exposure Time vs Burn 5
158-176oF
70-80oC
Disinfection range
158oF
70oC
1 second - 2nd or 3rd degree burn
140-149oF
60-65oC
Bacteria die within minutes
140oF
60oC
5 seconds - 2nd or 3rd degree burn
122-131oF
50-55oC
Bacteria die within hours
131oF
55oC
5 seconds - 1st degree burn
68-113oF
20-45oC
Bacteria thrive and multiply
122oF
50oC
1 minute - 1st degree burn
below 68oF
below 20oC
Bacteria is dormant
111oF
44oC
5 hours - 1st degree burn
3,4
Notes:
1
Published by Chartered Institute of Plumbing and Heating Engineering, Databyte series, "Safe Hot Water Temperatures".
2
The elderly and small children are susceptible to bad burns at shorter exposure times than listed in this table.
3
A thermostatic mixing valve should be installed on DHW storage tanks when outlet temperatures exceed 115oF [46oC].
4
Typical water temperature for bathing or showering range between 98-113oF [37-45oC].
5
Temperature-Time-Burn Chart published by John Hopkins University, excluding notes.
Trin & Stor │ Installation and Operation Instructions Indirect Water Heaters
mostly voluntary. The American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
(ASHRAE) is currently in the process of converting its guideline entitled "Minimizing the Risk of Legionellosis
Associated with Building Water Systems" (ASHRAE Guideline 12-2000) into an official standard. Consult with
your local authorities as to recommended guidelines for controlling Legionella in potable water systems.
then mixed down to safe temperatures at the tank outlet.
General Guidelines - In the absence of a National standard or local codes, the following are general guidelines
for “good practice” on maintaining, monitoring and operating your potable water system:
Store domestic hot water at temperatures > 61oC (140oF).
Store and distribute cold water at temperatures below 20oC (68oF).
System supply for uses other than high temperature applications typically greater than 46oC (115oF) shall be
equipped with a thermostatic mixing valve on the hot water outlet to reduce potential scald hazards.
Clean aerators and nozzles on water fixtures on a regular basis to reduce scale build-up.
Clean storage tanks and remove sediment. Flush storage tanks and piping systems regularly for 10-30
minutes at high water temperatures (depending on guidelines used) to rid the system of sediment and scale
that develops, typically in the bottom of storage tanks where water temperature is coolest; and piping runs
where water can stagnate.
Abandoned water lines should be capped off at the distribution main, not at the most convenient place.
Avoid dead-ends in piping system. If unavoidable, provide a drainage port in these areas at the lowest point
to flush out stagnant water regularly.
Insulate Domestic Hot Water piping and recirculation lines to R-2.6.
Insulate the last 5 feet of the cold water line entering the tank to R-2.6.
Keep pipe runs as short as possible to avoid unnecessary heat loss.
Recommend annual water testing of water in your tank and piping system(s) to monitor water conditions.
Keep a maintenance record of when your indirect water heater and storage tank were cleaned, piping
systems flushed and who did the service work.
Table 1-4 How Water Temperature relates to Legionella and Scald Hazard
Legislation and Guidelines - At the time this document was written, standards and
guidelines regulating the prevention of Legionella in the United States and Canada were
Storing water at temperatures >140°F may not be permitted in some States, so check
with the authorities having jurisdictions. In Canada, recent changes to the National
Plumbing Code requires that domestic hot water be stored at or above 61oC (140oF) and
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