FULTON Endura EDR-750 Installation guide

Metropolitan Regional Housing Authority
Tender No. MET21-117 Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
ADDENDUM NO. 5
July 27, 2021
Page 1 of 1
The Tender Documents shall be amended and will become part of the Contract
Documents.
This addendum shall form an integral part of the Tender Documents.
1. Design Consultant and Contractor shall be fully responsible in providing a
transport design plan that is acceptable to MRHA Project Manager and HNS BDG
Engineering. The Team shall provide back up materials on their determination of how
and what they intend to use to remove old boilers and heating system to be replaced
and to install new boilers from ground level temporary storage, shipping container or
like, at Alderney Manor to inside the penthouse mechanical boiler room.
Note, the roof shall not be used as a sitting staging area for craning of old and new
boilers and other heavy old and new equipment from ground into penthouse boiler room
and vice versa, unless there is an approved engineering structural assessment of the
roof with respect to the process that provides no detriment or undue risk to roof
structure and integrity. It is preferred by BDG and MRHA that a craned lift be continuous
from ground into penthouse and vice versa for all demolition and new craning of boilers
and equipment.
2. The correct IOM manual for the new boilers follows this page and forms part of
this addendum.
The closing date and time remains the same.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 1 of 105

INSTALLATION,
OPERATION AND
MAINTENANCE MANUAL
Endura (EDR)
Condensing Hydronic Boilers
750,000 - 2,000,000 BTU/HR
Featuring PURE Control™
Serial/ National
Board Number
Model
Fulton Order
Owner
Site Name
Date
EDR-PURE-IOM-210617
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 2 of 105

Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 3 of 105

Questions? Please Contact Your Local Manufacturer’s Representative
EDR-PURE-IOM-210617 TABLE OF CONTENTS
0-1
Introduction 1-1
Overview .............................................................................................................. 1-2
Warnings & Cautions............................................................................................ 1-2
Disclaimers and Local Codes ................................................................................ 1-2
Installation 2-1
Product Overview................................................................................................. 2-2
Placement & Rigging........................................................................................... 2-3
Clearances and Serviceability .............................................................................. 2-5
Install BoilerTrim ................................................................................................. 2-5
InstallWater Piping.............................................................................................. 2-6
VARIABLE PRIMARY PIPING ARRANGEMENT............................................................................27
PRIMARYSECONDARY PIPING ARRANGEMENT......................................................................210
MeetWater Chemistry Requirements................................................................ 2-11
PREVENT OXYGEN CONTAMINATION........................................................................................212
ELIMINATE SYSTEM AIR ............................................................................................................212
Fill the BoilerWithWater ................................................................................... 2-12
Gas Supply Piping .............................................................................................. 2-12
INLET GAS PRESSURE................................................................................................................213
GAS PRESSURE REQUIREMENTS...............................................................................................213
LINE GAS PRESSURE REGULATION............................................................................................213
GAS PIPING INSTALLATION .......................................................................................................214
COMPONENTS REQUIRINGVENTILATIONTOTHE OUTDOORS.................................................215
Install Condensate Drain Trap............................................................................. 2-17
SINGLE BOILER DRAINTRAP.....................................................................................................217
MULTIPLE BOILERS SHARING A COMMON DRAINTRAP .........................................................217
Install pH Neutralization Kit............................................................................... 2-21
Venting Requirements....................................................................................... 2-22
Combustion Air Intake ....................................................................................... 2-23
COMBUSTION AIR SUPPLY FROM THE BOILER ROOM..............................................................224
COMBUSTION AIR DUCTED FROMTHE OUTDOORS..................................................................225
Combustion Air Filter ......................................................................................... 2-26
Flue Gas ExhaustVenting................................................................................... 2-26
Common Flue GasVenting Layouts.................................................................... 2-28
COMMONVENTING EXHAUST BACKFLOW PREVENTION.........................................................230
VentingTerminations......................................................................................... 2-30
WALL THIMBLE INSTALLATION.................................................................................................231
ROOFVENTTERMINATION.........................................................................................................231
SIDEWALL VENT TERMINATION................................................................................................231
Removing an Existing Boiler ............................................................................. 2-35
Assembly of Fulton Multi-Skid Systems............................................................. 2-35
Electrical Connections and Devices.................................................................... 2-37
JUNCTION BOX LOCATIONS FOR FIELD WIRING .......................................................................242
ELECTRICAL AND CONTROLS OPTIONS.....................................................................................242
LEAD/LAG INTEGRATED SEQUENCINGWIRING........................................................................242
INTEGRATIONWITH THE MODSYNC SEQUENCING SYSTEM ....................................................243
SUPPLER HEADERTEMPERATURE SENSOR..............................................................................243
OUTDOOR AIRTEMPERATURE SENSOR KIT..............................................................................243
DOMESTIC HOTWATER DHW TEMPERATURE SENSOR..........................................................244
MOTORIZED ISOLATIONVALVE CONTROL.................................................................................244
AUXILIARY SAFETY INTERLOCK FOR EXTERNAL DEVICE..........................................................244
VARIABLE SPEED SYSTEM PUMP CONTROL.............................................................................244
DEDICATED BOILER PUMP CONTROL........................................................................................244
ALTERNATE COMMUNICATION PROTOCOL GATEWAY..............................................................245
REMOTE BOILER ENABLE/DISABLE...........................................................................................245
REMOTE ANALOG SETPOINT .....................................................................................................245
GENERAL ALARM CONTACT.......................................................................................................245
LOW WATER CUT OFF.................................................................................................................245
BOILER STATUS CONTACT..........................................................................................................245
BOILER DEMAND CONTACT .......................................................................................................245
EMERGENCY STOP ESTOP .....................................................................................................245
Operation 3-1
Perform Pre-Start-Up Inspection......................................................................... 3-2
Fill and Purge the System..................................................................................... 3-2
CommissionThe Boiler......................................................................................... 3-3
SYSTEM DESIGN AND BOILER OPERATION.................................................................................33
Siemens LMV3 Control......................................................................................... 3-4
BEFORE MODIFYING LMV PARAMETERS....................................................................................36
STEPSTO ENTER PARAMETERS...................................................................................................36
ADJUSTING FUEL/AIR CURVE......................................................................................................36
MANUAL CONTROL MANUAL REQUEST FOR OUTPUT ............................................................38
PARAMETER BACKUP ..................................................................................................................39
PARAMETER RESTORE ...............................................................................................................310
Using the Endura PURE Control™ Interface........................................................ 3-12
NAVIAGTION...............................................................................................................................312
Endura PURE Control™ Menu Screen Functions................................................. 3-14
BOILER CONTROL.......................................................................................................................314
BOILER STATUS ..........................................................................................................................314
SAFETY DEVICE STATUS.............................................................................................................314
OPERATOR CONTROL .................................................................................................................314
BOILER HISTORY ........................................................................................................................315
ALARM HISTORY........................................................................................................................315
MAINTENANCE LOG...................................................................................................................315
ISOLATIONVALVE.......................................................................................................................315
PRIMARY PUMP.........................................................................................................................315
SECONDARY PUMPS..................................................................................................................316
LEAD/LAG...................................................................................................................................316
LEAD/LAG CONFIGURATION......................................................................................................316
PID CONTROL .............................................................................................................................317
LOCAL PID ..................................................................................................................................317
LOW FIRE HOLD..........................................................................................................................317
FREEZE PROTECTION .................................................................................................................317
OUTLET MONITORING................................................................................................................317
COLD START................................................................................................................................317
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 4 of 105

© Fulton Group N.A., Inc. 2020
TABLE OF CONTENTS EDR-PURE-IOM-210617
0-2
SETPOINT ...................................................................................................................................318
SETPOINT CONFIGURATION.......................................................................................................318
OUTDOOR RESET........................................................................................................................318
BMS ANALOG 420MA AND 010VDC....................................................................................318
SCHEDULING..............................................................................................................................318
TRENDING ..................................................................................................................................318
ADMIN........................................................................................................................................319
SYSTEM CONFIGURATION .........................................................................................................319
SENSOR STATUS.........................................................................................................................319
AUXILIARY CONFIGURATION.....................................................................................................319
UNIVERSAL DATA CONFIGURATION..........................................................................................319
USER CONFIGURATION..............................................................................................................319
Commissioning Mode........................................................................................ 3-20
PerformTest of Limit Controls............................................................................ 3-20
PerformTest of Low Gas Pressure Switch........................................................... 3-20
PerformTest of High Gas Pressure Switch.......................................................... 3-20
Maintenance 4-1
General................................................................................................................. 4-2
Daily Inspection Schedule ................................................................................... 4-2
Weekly Maintenance Schedule ........................................................................... 4-2
Tool List ................................................................................................................ 4-3
Monthly Maintenance Schedule.......................................................................... 4-4
Procedure for Inspecting the Air Inlet Filter ....................................................... 4-4
Replacing or Updating the Boiler Control............................................................ 4-4
Annual Maintenance Schedule............................................................................ 4-5
Removing and Cleaning the Flame Rod .............................................................. 4-6
Removing and Cleaning Bruner Assembly .......................................................... 4-6
Verication of Ignition Gap.................................................................................. 4-8
After All Repairs and Maintenance ...................................................................... 4-9
Troubleshooting................................................................................................. 4-10
Service 5-1
Pre-Commissioning Installation Checklist........................................................... 5-3
Installation & Operation“Start-Up”Report ......................................................... 5-5
Annual Maintenance Checklists .......................................................................... 5-7
Notes .................................................................................................................. 5-17
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 5 of 105

Questions? Please Contact Your Local Manufacturer’s Representative 1-1
INTRODUCTION
INTRODUCTION
1
INSTALLATION 2
OPERATION 3
MAINTENANCE 4
SERVICE DOCUMENTS 5
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 6 of 105

© Fulton Group N.A., Inc. 2020
INTRODUCTION EDR-PURE-IOM-210617 SECTION 1
1-2
Overview
Prior to shipment, the following inspections and tests are
made to ensure the highest standards of manufacturing for
our customers:
Material inspections
Manufacturing process inspections
American Society of Mechanical Engineers (ASME)
welding inspection
ASME hydrostatic test inspection
Electrical components inspection
Operating test
Final engineering inspection
Crating inspection
This manual is provided as a guide to the correct operation
and maintenance of your Fulton equipment, and should be
read in its entirety and be made permanently available to the
sta responsible for the operation of the boiler. It should not,
however, be considered as a complete code of practice, nor
should it replace existing codes or standards which may be
applicable. Fulton reserves the right to change any part of
this installation, operation and maintenance manual.
Installation, start-up, and maintenance of this equipment
can be hazardous and requires trained, qualied installers
and service personnel. Trained personnel are responsible
for the installation, operation, and maintenance of this
product, and for the safety assurance of installation,
operation, and maintenance processes. Do not install,
operate, service or repair any component of this
equipment unless you are qualied and fully understand
all requirements and procedures. Trained personnel
refers to those who have completed Fulton Service School
training specic to this product.
When working on this equipment, observe all warnings,
cautions, and notes in literature, on stickers and labels, and
any additional safety precautions that apply. Follow all safety
codes and wear appropriate safety protection. Follow all
jurisdictional codes and consult any jurisdictional authorities
prior to installation.
Warnings & Cautions
WARNINGS and CAUTIONS appear in various chapters of this
manual. It is critical that all personnel read and adhere to all
information contained in WARNINGS and CAUTIONS.
WARNINGS must be observed to prevent serious injury
or death to personnel.
CAUTIONS must be observed to prevent damage
or destruction of equipment or loss of operating
eectiveness.
All Warnings and Cautions are for reference and guidance
purposes, and do not substitute for required professional
training, conduct, and strict adherence to applicable
jurisdictional/professional codes or regulations.
Disclaimers and Local Codes
Installation of the equipment shall conform to all the
requirements or all national, state and local codes established
by the authorities having jurisdiction or, in the absence
of such requirements, in the US to the National Fuel Gas
Code ANSI Z223.1/NFPA 54 latest edition, and the specic
instructions in this manual. Authorities having jurisdiction
should be consulted prior to installation.
When required by local codes, the installation must conform
to the American Society of Mechanical Engineers Safety Code
for Controls and Safety Devices for Automatically Fired Boilers
(ASME CSD-1).
The boiler heat exchanger is manufactured and stamped
in accordance with ASME Boiler and Pressure Vessel Code,
Section IV for a maximum allowable working pressure
and operating temperature of 160 psig and 210˚F (99˚C)
respectively.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 7 of 105

Questions? Please Contact Your Local Manufacturer’s Representative 2-1
INSTALLATION
INTRODUCTION
1
INSTALLATION
2
OPERATION 3
MAINTENANCE 4
SERVICE DOCUMENTS 5
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 8 of 105

© Fulton Group N.A., Inc. 2020
2-2
INSTALLATION EDR-PURE-IOM-210617 SECTION 2
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
4 CAUTION
The standard conguration for
this boiler is certied for indoor
installation only.
This boiler is not designed for use in
systems where water is continuously
replenished. The warranty is valid for
closed loop systems only.
Fulton cannot be held responsible
for the selection, engineering,
installation, or sizing of any
additional equipment or components
of the hydronic heating system.
Product Overview
Prior to the performance of installation, operation, or maintenance procedures,
personnel should become familiar with the equipment (Table 1 and Figure 1) and
its components.
The Fulton Endura hot water boiler is an automatic, fuel-red, ultra high-
eciency boiler. Combustion air supply may be ducted to the boiler from the
outdoors or utilize conventional methods.
The boiler is capable of sidewall venting when the appropriate venting materials
are used, and when permitted by local code requirements.
This boiler is ETL listed and labeled to Underwriters Laboratories (UL) Edition 7
UL Standard for Safety Commercial-Industrial Gas Heating Equipment for indoor
installation. The boiler heat exchanger is manufactured and bears the“H”stamp
in accordance with American Society of Mechanical Engineers (ASME) Boiler and
Pressure Vessel Code, Section IV for a maximum allowable working pressure and
temperature of 160 psi and 210˚F (99˚C) respectively. It is hydrostatically tested,
test red and shipped as a complete packaged unit.
Fuel, water and electrical connections are similar to other boilers of this type.
Please be aware of which burner and control conguration has been designed
specically for your application.
This boiler is to be installed as part of a hydronic heating system. A qualied
engineer must be consulted for the selection of the equipment and components
of the heating system. Various system conditions can result in incorrect heat
distribution to users of the heating system.
Each Endura Boiler is supplied with the following:
Integrated combustion supervision and temperature operating control
Operating and high temperature probe(s) in pressure vessel
Low water probe(s) in pressure vessel
ASME safety relief valve
Installation, Operation, and Maintenance Manual
Test re report
Wiring diagram
Temperature and pressure (T&P) gauge
The customer should examine the equipment for any damage. It is the
responsibility of the installer to ensure all parts supplied with the equipment are
tted in a correct and safe manner.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 9 of 105

Questions? Please Contact Your Local Manufacturer’s Representative 2-3
SECTION 2 EDR-PURE-IOM-210617 INSTALLATION
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
Competent personnel in accordance
with all applicable local codes
should carry out the installation
of the Fulton equipment. All state
and jurisdictional codes beyond the
scope of the applicable ASME Boiler
and Pressure Vessel Codes, for its
corresponding classication, should
be followed in all cases. Jurisdictional
authorities must be consulted prior to
installation.
A competent rigger experienced in
handling heavy equipment should
handle rigging your equipment into
position.
The equipment must be installed on a
non-combustible surface.
Failure to provide required and
safe access to the equipment
could impede commissioning and
maintenance. Service technicians
are instructed not to commence
commissioning if hazardous
conditions exist.
Failure to provide proper minimum
clearances between equipment and
combustible materials may result in
re.
4 CAUTION
Do not allow weight to bear on
equipment components to prevent
damage.
Do not use to directly heat swimming
pool.
Placement & Rigging
Proper placement of your Fulton product is essential. Attention paid to
the following points will save a great deal of diculty in the future. Correct
placement is the rst step to trouble-free installation, operation, and
maintenance.
Adhere to the following for placement and rigging:
1. Check building specications for permissible oor loading. Use Table 1 for
unit reference.
2. Conform to all the requirements of all national, state and local codes
established by the authorities having jurisdiction and/or the U.S. to the
National Fuel Gas Code, latest edition. Authorities having jurisdiction
should be consulted before installations are made. Where required by local
codes, the installation must conform to American Society of Mechanical
Engineers Safety Code for Controls and Safety Devices for Automatically
Fired Boilers (ASME CSD-1).
3. Since an external electrical source is utilized, the boiler, when installed,
must be electrically ground in accordance with the National Electric Code,
American National Standards Institute (ANSI) National Fire Protection
Association (NFPA) 70, latest edition.
4. The boiler is designed for room temperatures above 32°F (0°C) and not
exceeding 120°F (48.9°C)
5. Install so that all system components are protected from water (dripping,
spraying, rain, etc.) and debris (dry wall dust, insulation particles, etc.)
during boiler operation and service.
6. Install on a level, non-combustible surface in the vertical position. Concrete
is strongly recommended. The surface must be elevated a minimum of 4”
(102 mm) above the oor. Do not install the boiler on springs.
7. Provide combustion and ventilation air in accordance with applicable
provisions of local building codes or: USA – NFPA 54/ANSI Z223.1, Section
5.3, Air for Combustion and Ventilation.
8. Locate the boiler so that the combustion air supply and exhaust piping
between the boiler and outside wall/roof are within the maximum lengths
for horizontal or vertical venting if sealed combustion will be used. See
Clearances and Serviceability section of this manual.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 10 of 105

© Fulton Group N.A., Inc. 2020
INSTALLATION EDR-PURE-IOM-210617 SECTION 2
2-4
TABLE 1  BOILER DIMENSIONS AND OPERATING REQUIREMENTS
FIGURE 1  VIEWS OF ENDURA HYDRONIC BOILER
Alternate gas pressure arrangements may apply based on conguration and/
or local code requirements. Please verify gas pressure ratings for your boiler by
viewing the boiler name plate and consulting with the authority having jurisdiction.
Typical 120 VAC controls allow for a +10% and a -15% voltage uctuation.
Voltages lower than 120 V can result in slightly decreased available output.
*Standard congurations may be available as an option; please consult factory.
Note: All dimensions are approximate and are subject to change without notice.
MODEL EDR 750 1000 1500 2000
Input
MM BTU/Hr
kW
.75
219
1.0
293
1.5
411
2.0
549
Fuel Cons. @ rated cap.
(Nat. Gas)
FT3/Hr
M3/Hr
750
21.2
1000
28.32
1500
42.5
2000
56.7
Output at AHRI Test
Condition
BHP
KCal/h
21.7
183,638
28.4
239,396
41.9
353,424
56
472,240
Natural Gas Pressure
W.C. 4-28 4-28 4-28 4-28
Electrical*
120 V, 60 Hz, 1 Phase
20 Amp
(10FLA)
20 Amp
(10FLA)
25 Amp
(20FLA)
25 Amp
(20FLA)
Water Content
Gal
Liters
50
189
50
189
104
394
102
386
Dry Weight
LBS
KG
1430
649
1430
649
2260
1025
2260
1071
Operating Weight
LBS
KG
1848
838
1848
838
3128
1419
3210
1456
MODEL EDR 750 1000 1500 2000
A. Boiler Width IN
CM
28
72
28
72
33.9
86
33.9
86
B. Overall Boiler Height IN
CM
67.8
172.2
67.8
172.2
80
203.2
80
203.2
C. Overall Boiler Depth IN
CM
50.2
127.5
50.2
127.5
60.6
153.8
60.6
153.8
D. Exhaust Outlet Diameter (ID) IN
CM
6
15.2
6
15.2
6
15.2
8
15.2
E. Water Inlet/Outlet Diameter IN
CM
2
5.08
2
5.08
4
10.2
4
10.2
F. Min. Clearance (top) IN
CM
18
46
18
46
18
46
18
46
G. Air Inlet Diameter (top access) IN
CM
6
15.25
6
15.25
8
20.3
8
20.3
H. Min. Clearance (sides) IN
CM
1
2.5
1
2.5
1
2.5
1
2.5
FRONT VIEW RIGHT SIDE VIEW BACK VIEW
TOP VIEW
B
D
E
G
E
C
F
A
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 11 of 105

Questions? Please Contact Your Local Manufacturer’s Representative
SECTION 2 EDR-PURE-IOM-210617 INSTALLATION
2-5
Clearances and Serviceability
Adhere to the following for clearances and serviceability:
1. All local and national codes (NFPA, ANSI, UL, CSA,
ASME) must be followed for proper clearances and
serviceability of your boiler. Authorities having
jurisdiction should be consulted before installations are
made.
2. Appropriate front, back, side and top clearances must
be maintained (Figure 1). This will allow access around
the equipment to facilitate maintenance and a safe
work environment. A 1-inch (25.4 mm) side clearance
is acceptable between any number of boilers. Custom
congurations may not allow 1-inch (25.4 mm) side
clearance. Although a 1 inch (25.4 mm) side clearance
is permitted, allowing 24 inches (610 mm) will
facilitate and expedite maintenance and any advanced
troubleshooting.
NOTE:Side panels are latched; however, maintenance and
service does not require boiler access through side panels. All
maintenance and service can be performed from front, rear,
and top of boiler.
3. Ensure all labels on the boiler will be fully visible for
maintenance and inspection.
4. Do not place any boiler room accessories, or other
components, on the Endura skid.
Install Boiler Trim
Each Endura boiler is supplied with a safety relief valve sized
in accordance with ASME requirements. Adhere to the
following installation requirements:
1. The safety relief valve (Figure 2) must:
» Be connected to the coupling located in the
top of the boiler.
» Be installed in the upright vertical position.
NOTE:Safety relief valve size is determined by trim pressure
and is supplied in the trim kit along with appropriate bushing,
inlet and outlet sizes. See Table 2. Standard trim pressure is 60
PSIG.
2. The discharge pipe must:
» Not have a diameter less than the full area of
the valve outlet.
» Be as short and straight as possible and so
arranged as to avoid undue stress on the valve.
» Be supported by means other than the safety
valve itself.
» Be piped to avoid danger of scalding
personnel.
NOTE:Each boiler is equipped with a pressure-temperature
gauge to be installed in the outlet piping section of the boiler.
Gauge must not be isolated from the boiler by any valve.
TABLE 2  SAFETY RELIEF VALVE INLET AND OUTLET SIZES
Model Trim Pressure
PSI (kPa)
Inlet Size
inch (mm)
Outlet Size
inch (mm)
EDR-750
EDR-1000
EDR-1500
30 (206.84) 1 (25.4) 1 1/4 (31.75)
60 (413.69) 3/4 (19.05) 1 (25.4)
100 (689.48) 3/4 (19.05) 1 (25.4)
125 (861.84) 3/4 (19.05) 1 (25.4)
160 (1103.16) 3/4 (19.05) 1 (25.4)
EDR-2000 30 (206.84) 1 1/4 (31.75) 1 1/2 (38.1)
60 (413.69) 1 (25.4) 1 1/4 (31.75)
100 (689.48) 3/4 (19.05) 1 (25.4)
125 (861.84) 3/4 (19.05) 1 (25.4)
160 (1103.16) 3/4 (19.05) 1 (25.4)
Note: Valve is
shipped loose
and must be
installed by the
contractor.
FIGURE 2  SAFETY VALVE LOCATION
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 12 of 105

© Fulton Group N.A., Inc. 2020
2-6
INSTALLATION EDR-PURE-IOM-210617 SECTION 2
Install Water Piping
All water supplies contain some solids, dissolved gases or dissolved minerals.
These may cause corrosion, deposition and/or fouling of equipment. To prevent
these contaminants from impacting boiler performance, valve operation and
general pipe longevity, you must analyze and treat each installation uniquely.
Adhere to the following for water piping installation (see Figures 4  7):
Manual isolation valves are recommended on both water connections for
ease of service.
Install piping so that the boiler is not supporting any piping load.
Install manual purging valves in all loops and zones.
Install a pressure-reducing (automatic ll) valve in the cold water ll line to
the boiler system.
To prevent scale and corrosion in boiler and associated piping, make up
water must be kept to a minimum. This is best achieved by ensuring
immediate repair of all leaks and maintaining system pressure.
Check that the proposed operation of zone valves, zone circulator(s) and
diverting valves will not isolate air separator(s) and/ or expansion tank(s)
from the boiler.
Provide at least 6 inches (152 mm) clearance from hot water pipes to
combustibles.
When used with a refrigeration system, install the boiler so that the chilled
medium is piped in parallel with the boiler with appropriate valves to
prevent the chilled medium from entering the boiler. If the boilers are
connected to heating coils (located in air handling units) where they may
be exposed to refrigerated air circulation, such boiler piping systems must
be equipped with ow control valves or other automatic means to prevent
gravity circulation of the boiler water during the cooling cycle.
Include the following in the mechanical equipment in the hydronic
heating system:
»An automatic pressure activated water make up valve with back ow
preventer. It must be set to maintain required Net Positive Suction
Head (NPSH) for re-circulating pumps, a positive system pressure at
the highest point of at least 5-10 PSIG, and should be designed to
add water to the system at the outlet of the boiler but should not be
fed directly into the boiler.
»Air removal equipment, including an air separator and automatic
breather valves, along with a functioning expansion tank . Each must
be designed to system specications.
NOTE:The upper water connection on the back of the boiler is the outlet
connection. The lower water connection on the rear of the boiler is the inlet
connection.
Install ltration in the common loop or per boiler to remove particulates if
appropriate. A #4 or ner mesh size is required.
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
The discharge from the safety relief
valve must be arranged to ensure
no danger of scalding personnel, or
equipment damage.
Provisions must be made to properly
pipe the safety relief discharge
away from the boiler to the point of
discharge.
No shuto of any kind shall be placed
between the safety relief valve
and the boiler, or in the discharge
pipe between the valve and the
atmosphere. Doing so may cause an
explosion from overpressure.
The hydronic system should never be
ushed while the boiler is attached
to the system since the debris could
accumulate in the boiler and block
water from passing through the heat
exchanger.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 13 of 105

Questions? Please Contact Your Local Manufacturer’s Representative 2-7
SECTION 2 EDR-PURE-IOM-210617 INSTALLATION
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
Ensure all labels on the boiler are
legible. All connections and safety
devices, both mechanical and
electrical, must be kept clean, with
ease of access for inspection, use and
maintenance.
Do not store or use gasoline or other
ammable vapors and liquids or
corrosive materials in the vicinity of
this or any other appliances.
Install bypass chemical feeder for corrosion inhibitor maintenance if
appropriate.
Install corrosion coupon holder to assess corrosion inhibitor performance if
appropriate.
Before installing an Endura boiler into a hydronic loop, be sure that the
system piping and any other components of the system are clean and free
of debris and any foreign matter. The hydronic system must be completely
ushed prior to installing the boiler.
Variable Primary Piping Arrangement
Endura boilers are designed for installation in variable primary ow piping
arrangements (see Figures 4 and 5), sometimes referred to as full ow systems.
This arrangement eliminates temperature mixing associated with primary-
secondary piping, thereby delivering the lowest temperature water directly
to the boiler return connections and increasing thermal eciency of the
condensing boiler plant.
NOTE:Although it is acceptable to install Endura boilers in a primary-secondary
conguration, it is not required.
Adhere to the following for variable primary piping arrangements:
Select pump(s) with sucient total dynamic head for the pressure drop of the
loop at design ow. See Figure 3 for the water side pressure drop through
the boiler. The Endura boiler does not have a minimum ow requirement.
It will automatically perform a safe shutdown in the event of a low ow or
zero ow condition; however, proper design ow will be required to deliver
heat to users and prevent nuisance high temperature limit trips.
Use motorized isolation valves: Ensure system eectiveness by eliminating
ow through idle boilers accordance with ASHRAE 90.1-2013 (6.5.4.3.2).
Blending of unheated supply water may impact temperature control
operation or cause manual reset high temperature lockouts. One
FIGURE 3  TYPICAL WATER SIDE PRESSURE DROP
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 14 of 105

© Fulton Group N.A., Inc. 2020
INSTALLATION EDR-PURE-IOM-210617 SECTION 2
2-8
FIGURE 5  SAMPLE PIPING LAYOUT, PRIMARY ONLY VARIABLE FLOW PIPING; MULTIPLE BOILERS
Note: Sample piping layout (P&ID) is a general representation of system installation. Good practice should be used in system
design, including but not limited to adequate pipe/valve sizing and natural ow path for system water.
DRAWING NUMBER REV
G-35-100014 -
ENDURA BOILER PRIMARY ONLY
VARIABLE FLOW SINGLE BOILER PIPING
DIAGRAM
DESCRIPTION:
DRAWN BY:
M.BERWALD
CHECKED BY:
N/A
B.O.M. REVIEW
MECH. ENG:
SMT
ELEC. ENG:
APPROVED BY:
N/A
K.BOTTORFF
N/A
JOB NUMBER:
PROJECT NAME:
PROJECT MANAGER:
This design and
drawings are
proprietary and are the
exclusive property of
The Fulton Companies.
The corporation does
not permit their use
except with prior
written consent.
The items shown in
this drawing may be
covered by one or
more patents of The
Fulton Companies.
1 OF 1
THIRD ANGLE PROJECTION
The Fulton Companies
972 Centerville Road
Pulaski, New York USA 13142
1/20/2015 2/2/2015
1/30/2015
UNLESS OTHERWISE NOTED:
DIMENSIONS ARE IN I NCHES
TOLERANCES ON
FRACTIONS 1/4
(2) PLACE DEC. .01
(3) PLACE DEC. .005
ANGLES 2 DEG.
SURFACE FINISH
250 MICRO-INCHES
R
SHEET 1 OF 1
-INITIAL RELEASE --- --- --- --- ---
REVISION HISTORY
REV REVISION DESCRIPTION CHECKED B.O.M. MECH. ENG ELEC. ENG APPROVED
FULTON ENDURA
CONDENSING HYDRONIC BOILER
AIR REMOVAL
EXPANSION TANK
VARIABLE SPEED
SYSTEM PUMP
HEATING HOT
WATER SUPPLY
HEATING HOT
WATER RETURN
NOTES:
1.
2.
3.
THIS IS A TYPICAL ARRANGEMENT FOR REFERENCE PURPOSE
S
ONLY. ACTUAL INSTALLATIONS MAY REQUIRE ADDITIONAL
COMPONENTS WHICH ARE NOT SHOWN FOR CLARITY.
THIS DRAWING IS NOT FOR CONSTRUCTION PURPOSES.
REFER TO THE INSTALLATION AND OPERATION MANUALS FOR
INFORMATION REGARDING CLEARANCES AND INSTALLATION
REQUIREMENTS.
DRAWING NUMBER REV
G-35-100005 A
ENDURA BOILER PRIMARY ONLY
VARIABLE FLOW MODULAR PLANT PIPING
DIAGRAM WITH 1" SIDE CLEARANCE
DESCRIPTION:
DRAWN BY:
M. BERWALD
CHECKED BY:
N/A
B.O.M. REVIEW
MECH. ENG:
N/A
ELEC. ENG:
APPROVED BY:
N/A
K.BOTTORFF
N/A
JOB NUMBER:
PROJECT NAME:
PROJECT MANAGER:
This design and
drawings are
proprietary and are the
exclusive property of
The Fulton Companies.
The corporation does
not permit their use
except with prior
written consent.
The items shown in
this drawing may be
covered by one or
more patents of The
Fulton Companies.
1 OF 1
THIRD ANGLE PROJECTION
The Fulton Companies
972 Centerville Road
Pulaski, New York USA 13142
7/7/2014
7/7/2014
UNLESS OTHERWISE NOTED:
DIMENSIONS ARE IN I NCHES
TOLERANCES ON
FRACTIONS 1/4
(2) PLACE DEC. .01
(3) PLACE DEC. .005
ANGLES 2 DEG.
SURFACE FINISH
250 MICRO-INCHES
R
SHEET 1 OF 1
AREMOVED CONDENSATE PIPING, UPDATED
CALLOUTS & DESCRIPTION. M.E.B 1/20/15 N/A N/A SMT 2/2/15 N/A KDB
1/30/15
REVISION HISTORY
REV REVISION DESCRIPTION B.O.M. ELEC. ENG MECH. ENG CHECKED APPROVED
FULTON ENDURA
C
ONDENSING HYDRONIC BOILERS
RETURN
WATER TEMPERATURE
SENSOR
HEATING HOT
WATER RETURN
TWO POSITION
MOTORIZED
ISOLATION VALVE
SUPPLY WATER
TEMPERATURE
SENSOR
AIR REMOVAL
EXPANSION TANK
VARIABLE SPEED
SYSTEM PUMP
HEATING HOT
WATER SUPPLY
NOTES:
1.
2.
3.
4.
THIS IS A TYPICAL ARRANGEMENT FOR REFERENCE PURPO
SES
ONLY. ACTUAL INSTALLATIONS MAY REQUIRE ADDITIONAL
COMPONENTS WHICH ARE NOT SHOWN FOR CLARITY.
THIS DRAWING IS NOT FOR CONSTRUCTION PURPOSES.
REFER TO THE INSTALLATION AND OPERATION MANUALS
FOR
INFORMATION REGARDING CLEARANCES AND INSTALLATI
ON
REQUIREMENTS.
THE PIPING CONFIGURATION SHOULD UTILIZE A REVERSE
RETURN HEADER TO PROPERLY BALANCE FLOW ACROSS THE
BOILERS. WHERE REVERSE RETURN CANNOT BE USED, IT IS
RECOMMENDED TO INSTALL A BALANCING VALVE PER BOILER.
REVERSE
RETURN
(SEE NOTE 4)
FIGURE 4  SAMPLE PIPING LAYOUT, PRIMARY ONLY VARIABLE FLOW PIPING; SINGLE BOILER
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 15 of 105

Questions? Please Contact Your Local Manufacturer’s Representative
SECTION 2 EDR-PURE-IOM-210617 INSTALLATION
2-9
FIGURE 7  SAMPLE PIPING LAYOUT, PRIMARY  SECONDARY PIPING; MULTIPLE BOILERS
Note: Sample piping layout (P&ID) is a general representation of system installation. Good practice should be used in system
design, including but not limited to adequate pipe/valve sizing and natural ow path for system water.
DRAWING NUMBER REV
G-35-100015 -
ENDURA BOILER PRIMARY - SECONDARY
SINGLE BOILER PIPING DIAGRAM
DESCRIPTION:
DRAWN BY:
M.BERWALD
CHECKED BY:
N/A
B.O.M. REVIEW
MECH. ENG:
SMT
ELEC. ENG:
APPROVED BY:
N/A
K.BOTTORFF
N/A
JOB NUMBER:
PROJECT NAME:
PROJECT MANAGER:
This design and
drawings are
proprietary and are the
exclusive property of
The Fulton Companies.
The corporation does
not permit their use
except with prior
written consent.
The items shown in
this drawing may be
covered by one or
more patents of The
Fulton Companies.
1 OF 1
THIRD ANGLE PROJECTION
The Fulton Companies
972 Centerville Road
Pulaski, New York USA 13142
1/20/2015 2/2/2015
1/30/2015
UNLESS OTHERWISE NOTED:
DIMENSIONS ARE IN I NCHES
TOLERANCES ON
FRACTIONS 1/4
(2) PLACE DEC. .01
(3) PLACE DEC. .005
ANGLES 2 DEG.
SURFACE FINISH
250 MICRO-INCHES
R
SHEET 1 OF 1
-INITIAL RELEASE --- --- --- --- ---
REVISION HISTORY
R
EV REVISION DESCRIPTION CHECKED B.O.M. MECH. ENG ELEC. ENG APPROVED
FULTON ENDURA
CONDENSING HYDRONIC BOILER
NOTES:
1.
2.
3.
4.
THIS IS A TYPICAL ARRANGEMENT FOR REFERENCE PURP
OSES
ONLY. ACTUAL INSTALLATIONS MAY REQUIRE ADDITION
AL
COMPONENTS WHICH ARE NOT SHOWN FOR CLARITY.
THIS DRAWING IS NOT FOR CONSTRUCTION PURPOSES.
REFER TO THE INSTALLATION AND OPERATION MANUALS
FOR
INFORMATION REGARDING CLEARANCES AND INSTALLAT
ION
REQUIREMENTS.
CENTER TO CENTER DISTANCE BETWEEN BOILER (PRIMARY)
SUPPLY AND RETURN MANIFOLDS SHOULD BE 4 PIPE
DIAMETERS OR LESS.
BOILER
(PRIMARY)
PUMP
HEATING HOT
W
ATER RETURN
SUPPLY WATER
TEMPERATURE
SENSOR
SEE NOTE 4
AIR REMOVAL
EXPANSION TANK
SYSTEM
(SECONDARY)
PUMP
HEATING HOT
WATER SUPPLY
DRAWING NUMBER REV
G-35-100006 A
ENDURA BOILER PRIMARY-SECONDARY
MODULAR PLANT PIPING DIAGRAM WITH
1" SIDE CLEARANCE
DESCRIPTION:
DRAWN BY:
M. BERWALD
CHECKED BY:
N/A
B.O.M. REVIEW
MECH. ENG:
N/A
ELEC. ENG:
APPROVED BY:
N/A
K.BOTTORFF
N/A
JOB NUMBER:
PROJECT NAME:
PROJECT MANAGER:
This design and
drawings are
proprietary and are the
exclusive property of
The Fulton Companies.
The corporation does
not permit their use
except with prior
written consent.
The items shown in
this drawing may be
covered by one or
more patents of The
Fulton Companies.
1 OF 1
THIRD ANGLE PROJECTION
The Fulton Companies
972 Centerville Road
Pulaski, New York USA 13142
7/7/2014
7/6/2014
UNLESS OTHERWISE NOTED:
DIMENSIONS ARE IN I NCHES
TOLERANCES ON
FRACTIONS 1/4
(2) PLACE DEC. .01
(3) PLACE DEC. .005
ANGLES 2 DEG.
SURFACE FINISH
250 MICRO-INCHES
R
SHEET 1 OF 1
AREMOVED CONDENSATE PIPING, UPDATED
CALLOUTS & DESCRIPTION. M.E.B. 1/20/15 N/A N/A SMT 2/2/15 N/A KDB
1/30/15
REVISION HISTORY
REV REVISION DESCRIPTION B.O.M. ELEC. ENG MECH. ENG CHECKED APPROVED
NOTES:
1.
2.
3.
4.
5.
THIS IS A TYPICAL ARRANGEMENT FOR REFERENCE PURPOS
ES
ONLY. ACTUAL INSTALLATIONS MAY REQUIRE ADDITIONAL
COMPONENTS WHICH ARE NOT SHOWN FOR CLARITY.
THIS DRAWING IS NOT FOR CONSTRUCTION PURPOSES.
REFER TO THE INSTALLATION AND OPERATION MANUALS F
OR
INFORMATION REGARDING CLEARANCES AND INSTALLATIO
N
REQUIREMENTS.
THE PIPING CONFIGURATION SHOULD UTILIZE A REVERSE
RETURN HEADER TO PROPERLY BALANCE FLOW ACROSS TH
E
BOILERS. WHERE REVERSE RETURN CANNOT BE USED, IT IS
RECOMMENDED TO INSTALL A BALANCING VALVE PER BOILE
R.
CENTER TO CENTER DISTANCE BETWEEN BOILER (PRIMARY)
SUPPLY AND RETURN MANIFOLDS SHOULD BE 4 PIPE
DIAMETERS OR LESS.
FULTON ENDURA
CONDENSING HYDRONIC BOILERS
HEATING HOT
WATER SUPPLY
SYSTEM (SECONDARY)
PUMP
AIR REMOVAL
EXPANSION TANK
SUPPLY WATER
TEMPERATURE SENSOR
SEE NOTE 5
RETURN WATER
TEMPERATURE SENSOR
HEATING HOT
WATER RETURN
BOILER (PRIMARY)
PUMP
REVERSE RETURN
(SEE NOTE 4)
FIGURE 6  SAMPLE PIPING LAYOUT, PRIMARY  SECONDARY PIPING; SINGLE BOILER
CLOSELY SPACED TEES
(<4 DIAMETERS)
CLOSELY SPACED TEES
(<4 DIAMETERS)
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 16 of 105

© Fulton Group N.A., Inc. 2020
2-10
INSTALLATION EDR-PURE-IOM-210617 SECTION 2
motorized isolation valve should be installed per boiler; two-position type
actuator, open or closed. It is acceptable to install the valve on either the
inlet or the outlet piping of each boiler.
Motorized isolation valve control: Ensure ow paths in the hydronic loop
and residual heat in the pressure vessel is adequately dispersed when the
burner is disabled. The valve control system must be capable of leaving the
lead boiler valve open at all times.
Use a reverse return header to properly balance ow across the boilers
for multiple boiler systems: Where reverse return cannot be used, it is
recommended to install a balancing valve per boiler.
Do not install three-way mixing valves or minimim temperature protection:
This boiler does not have a minimum return water temperature
requirement.
Primary-Secondary Piping Arrangement
It is acceptable to install this boiler in a primary-secondary arrangement, although
this arrangement is not required. See Figures 6 and 7. Primary-secondary
arrangements are used to decouple the water ow of the primary (boiler) loop
from the secondary (system) loop. Blending occurs in the shared piping region.
Adhere to the following for primary-secondary piping arrangements:
Typical shared piping methods include closely spaced tees, a buer tank, or
a hydraulic separator.
When using closely spaced tees as a decoupling method, the tees should be
separated by four pipe diameters or less.
Install the dedicated boiler circulator on the inlet side of the Endura boiler,
pumping into the return connection. Select pump(s) with sucient total
dynamic head for the pressure drop of the loop at design ow. See Figure 3
for the water side pressure drop through the boiler.
For multiple boiler systems:
»Use a single common supply and a single common return connection
into the secondary (system) piping. Do not use separate connections
for each boiler into the secondary piping.
»Use a reverse return primary header to properly balance ow across the
boilers. Where reverse return cannot be used, it is recommended to
install a balancing valve per boiler.
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
Do not use matches, candles, ame or
other sources of ignition to check for
gas leaks.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 17 of 105

Questions? Please Contact Your Local Manufacturer’s Representative 2-11
SECTION 2 EDR-PURE-IOM-210617 INSTALLATION
Meet Water Chemistry Requirements
System water chemistry requirements are as follows:
pH: Range of 8.5 - 10.5
Oxygen: Less than 250 ppb (operating condition)
Total Iron/Copper: Less than 5 ppm
Corrosion Inhibitor: Capable of maintaining iron corrosion rates <2 mpy.
Due to changing environmental restrictions a non-heavy metal ALL
ORGANIC inhibitor is recommended which is designed for multi metal
systems including ferrous metals and yellow metals such as copper and
brass.
Chloride: Less than 200 ppm
Hardness: Less than 3.5 grains per gallon (60 ppm) in make-up/ll water.
Calcium buildup on heating surfaces is not covered under warranty.
Adhere to the following:
1. Refer to your water conditioning or chemical treatment supplier for
analysis and recommendations for proper system conditions.
2. Follow a program with appropriate monitoring and maintenance of system
water conditions as provided by your water conditioning or chemical
treatment supplier.
3. If RO/DI water is used as a source for hydronic loop water or makeup water,
it must be neutralized to a pH of 8.5 - 10.5 prior to entering the boiler.
Failure to neutralize the RO/DI water will void the pressure vessel warranty
and may cause high general corrosion rates.
The system must have an automatic pH controller to monitor and log
the levels. This must be independent of other chemical feed systems.
Makeup water pH range must be 7.5 - 8.8; the boiler water must be
maintained within pH range of 8.5 - 10.5.
4. Operate the boiler in a closed-loop system using water or water/glycol
(not requiring a make-up water supply). A large amount of improperly
treated make-up water can cause premature failure of the heat exchanger
resulting from scale build up. Scale build up will reduce the eciency and
useful life of the boiler and is not covered under warranty.
5. For freeze protection, an inhibited propylene glycol is recommended.
The maximum concentration is 50% glycol by volume. Only use mixtures
formulated for hydronic systems. DOWFROSTTM HD is recommended. Do
not use automotive glycol.
6. At a minimum, the hydronic uid should be checked for glycol
concentration and pH once a year, or per glycol manufacturer schedule. A
refractometer is recommended.
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
If the water supply must be
temporarily disconnected from the
condensate drain trap, the boilers
must be turned o to prevent
accidental ue gas emission into the
boiler room.
4 CAUTION
Some soap used for leak testing is
corrosive to certain types of metals.
Clean all piping thoroughly after
completing the leak check.
Care needs to be taken to eliminate
oxygen from the water system, as
excess oxygen in the system will
reduce the life of any boiler. The
boiler warranty does not cover heat
exchanger replacement due to oxygen
contamination of boiler water.
Heat exchanger failure due to
inappropriate water quality, foreign
matter or debris damage is not covered
under the warranty.
If the piping system attached to this
unit will be chemically cleaned, the
boiler must be disconnected from the
system and a bypass installed so that
the chemical cleaning solution does
not circulate through the boiler. If
cleaning is desired, ush the boiler with
clean domestic water only.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 18 of 105

© Fulton Group N.A., Inc. 2020
INSTALLATION EDR-PURE-IOM-210617 SECTION 2
2-12
Fuel Train Inlet
Note: Measure Inlet
gas pressure here
Main Gas Valve
FIGURE 8  TYPICAL GAS TRAIN
VARIES BY SIZE/MODEL
Gas Control
Servo Valve
Prevent Oxygen Contamination
There are several ways to prevent boiler water oxygen
contamination:
Minimize system leaks to minimize make up water
requirement.
Do not use open tanks or ttings.
Do not use oxygen permeable materials anywhere in
the water system.
Repair leaks in the system quickly.
Eliminate ttings wherever possible.
Use air elimination devices in system piping.
Eliminate System Air
NOTE:There are no built-in boiler air eliminating features.
Adhere to the following for air elimination:
1. The installation of an air separator and air eliminator (air
vent) is required.
2. To prevent scale corrosion in boiler and associated
piping, make up water must be kept to a minimum. This
is best achieved by ensuring immediate repair of all
leaks and that system pressure is maintained.
3. If a sealed diaphragm-type expansion tank is used,
install an air eliminator in the hot water piping at the air
separator on the suction side of the system circulator(s).
4. If an air cushion type expansion tank is used, pipe tank
directly into boiler supply on the suction side of the
system circulator(s).
5. On multi-zoned systems (or a system with both space
and domestic water heating), air elimination must be
provided either in the common piping or on every loop.
6. When the boiler is installed at a higher level than
baseboard radiation (if used), air elimination must be
provided directly above the unit.
Fill the Boiler With Water
To be sure that the boiler is not air-bound, open the pressure-
relief valve located at the rear of the boiler. Leave the relief
valve open until a steady ow of water is observed. Close the
valve and nish lling the system.
Gas Supply Piping
This boiler features a gas red fully modulating burner
requiring gas delivery at a relatively constant pressure
and caloric content. This ensures ecient and reliable
combustion. A lock-up style regulator is factory-mounted in
the gas train. Do not modify the gas train.
The packaged gas train (See Figure 8) is congured to operate
at specic gas pressure requirements. The requirements are
detailed on the boiler name plate, located on the back of the
boiler.
This boiler is factory test red and combustion is adjusted per
the boiler data plate and test re sheet.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 19 of 105

Questions? Please Contact Your Local Manufacturer’s Representative
SECTION 2 EDR-PURE-IOM-210617 INSTALLATION
2-13
FIGURE 9  MEASURING INLET GAS PRESSURE
Measure
inlet supply
gas pressure
here
Inlet Gas Pressure
Adhere to the following:
Static inlet gas pressure: Measure while boiler is idle.
Verify pressure is within allowable range.
Dynamic inlet gas pressure: Measure while boiler is in
operation at maximum ring rate. Verify pressure is
within allowable range.
The gas delivery system must provide a stable and
consistent pressure across the entire turndown range,
including light o and idle conditions.
Maximum inlet gas pressure drop from static to dynamic
must not exceed 15%, or the maximum allowable by
local code (CSA B149 clause 6.3.2 for Canada). The
stricter of the two shall apply.
Gas Pressure Requirements
The minimum gas pressure required is 4”W.C. For gas pressures
exceeding 28”W.C. (14”W.C. Canada), a step down regulator (not
supplied) must be installed in the gas supply piping.
Line Gas Pressure Regulation
When inlet gas pressure exceeds 28”W.C. (14”W.C. Canada), a
line gas pressure regulator is required to step the gas pressure
down below maximum pressure.
Proper selection and installation of a gas pressure regulator
is essential in providing conditions for ecient and reliable
combustion. Adhere to the following guidelines when
selecting and installing a gas pressure regulator:
A sediment trap is recommended prior to the inlet of
the regulator.
If the level of pipe system cleanliness is unacceptable
or unknown, it is recommended that a gas lter be
installed prior to the regulator.
On the outlet of the regulator: Install a straight and
uninterrupted section of pipe matching regulator
connection size with a minimum length of 10 pipe
diameters prior to any valves or ttings.
When installed in close proximity to an appliance,
some regulators may experience oscillation (hunting)
or an outlet pressure spike when demand ends.
Provide adequate volume by locating the regulator
a recommended minimum of 10 total linear feet of
pipe from boiler fuel train inlet. Consult the regulator
manufacturer for installation requirements.
The body size should never be larger than the pipe size.
However, a properly sized regulator may be smaller
than the pipe size.
The inlet pressure used for sizing should be measured
directly at the regulator inlet. Measurements taken at
any other point may be subject to losses associated
with upstream piping.
Consult the regulator manufacturer for orice selection.
If two or more springs are available for a particular
outlet pressure in the desired range use the spring with
the lower range for better accuracy.
For multiple boiler installations it is recommended
that an individual line gas pressure regulator be
used to step-down the gas pressure at each boiler.
Where a single regulator is used for multiple boilers
the regulator must be appropriate for the entire gas
delivery turndown range. This includes all boilers on at
full re to one boiler on at low re (see Figure 12).
NOTE:Regulators are not intended for use as “shut o”
devices. As per ANSI Z21.80/CSA 6.22 lock-up is dened as an
outlet pressure not more than 150% or 5” W.C., whichever is
greater, above the setpoint after a downstream safety shuto
valve closes within 2 seconds.
Tender No. MET21-117
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
Addendum #5 Page 20 of 105