ECR International Dunkirk DCB-75 Instruction manual

Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. [phone]
www.ecrinternational.com
DCB-75
DCB-100
DCC-115
DCB-125
DCC-150
DCB-165
DCC-205
CONDENSING
WALL MOUNTED
GAS FIRED BOILER

DCC-205

CONTENTS :
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
(240013501)
APPLICATION GUIDE
(240011430)
COMMISSIONING
GUIDE
(240011376)
REQUIRED
INSPECTION SPECIAL
(240011561)
BACK COVER

DCB-165

Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. [phone]
www.ecrinternational.com
CONDENSING WALL MOUNTED
GAS FIRED
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
Models:
COMBI
DCC-115, DCC-150
DCC-205
HEATING ONLY
DCB-75, DCB-100,
DCB-125, DCB-165
240013501 REV A [03/15/2022]

2
VERIFY CONTENTS RECEIVED
* Verify proper model size before use.
Fully Assembled Boiler Metal Wall Bracket w/ 4 ea Wall Screws
and Plugs 30 PSI Safety Relief Valve
Temperature Pressure
Gauge
4 ea - 17x24x2 Gaskets
Includes Essential
Documents and Warranty
11x17 Wire Diagrams
Drain Valve *5 GPM Flow Restrictor 205
Combi Only Used for Valve Connections Document Package
Wall Mount Template
*Manifold *Manifold
165 Heat-Only
* DHW Connections
(DHW connection qty. vary
between models)
Template
240013501 REV A [03/15/2022]
For Parts lists see manual 240013502 included with your boiler literature package.

3
TABLE OF CONTENTS
Verify Contents Received...............................................2
Table Of Contents..........................................................3
Physical Data.................................................................4
1 - Important Information.............................................6
2 - Introduction.............................................................7
2.3 Requirements For Commonwealth Of Massachusetts:
................................................................................7
2.4 Use Of Carbon Monoxide Monitor............................7
2.5 Designated Use ....................................................7
2.6 The Unit Must Not:................................................7
2.7 Operational Features .............................................7
3 - Component Listing .................................................11
4 - Locating Boiler .......................................................14
4.1 Boiler Location Considerations............................. 14
4.2 Clearances ........................................................15
4.3 Wall Mounting ....................................................16
5 - Combustion Air And Vent Piping.............................17
5.1 General .............................................................17
 .........................................................17
5.3 Removal Of Existing Boiler From Common Vent
System ...................................................................18
5.4 Approved Venting Materials .................................19
5.5 Vent Termination ................................................19
5.6 Coaxial Venting Instructions................................. 21
5.7 Coaxial Vent Screw Placement .............................22
5.8 Twin Pipe Systems ..............................................23
5.9 Twin Pipe Polypropylene Adapter Kit Installation .....24
5.10 Twin Pipe CPVC Adapter Kit Installation.................24
5.11 Twin Pipe Polypropylene Adapter Kit Installation
.......25
5.12 Twin Pipe CPVC Adapter Kit Installation................... 25
5.13 Securing Twin Pipe Polypropylene Venting......... 26
5.14 Flexible Vent System ........................................29
5.15 Condensate Piping ............................................31
6 - Hydronic Piping .........................................................32
6.1 General .............................................................32
6.2 Special Conditions ..............................................33
6.3 Safety Relief Valve And Air Vent ...........................33
6.4 Trim Piping.........................................................34
6.5 System Piping ....................................................34
 ................. 36
6.7 Manufacturer Recommendation - Flter On DHW Inlet
..............................................................................37
6.8 Central Heating System.......................................38
6.9 Frost Protection Mode..........................................38
6.10 Pump Protection ............................................... 38
7 - Gas Supply Piping ..................................................39
7.1 General .............................................................39
7.2 Gas Pipe Recommendations ................................. 40
7.3 Leak Check Gas Piping ........................................42
........................................................42
8 - Electrical Connections ............................................43
8.1 General .............................................................43
8.2 Electrical Connections .........................................43
8.3 Access To Connection Block..................................44
8.4 Main Supply Connection ......................................44
8.5 Install Room Thermostat .....................................45
8.6 Optional Outdoor Air Sensor (OAS)........................45
8.7 Options For Indirect Water Heater Connections ..... 47
8.8 Use Of 0-10VInput To Control Boiler Water Temperature
.................................................................................47
9 - Start Up Procedure.................................................49
9.1 Central Heating System Connections - Central Heat
Models Only............................................................. 49
9.2 Central Heating System Connections - Heating And
Domestic Hot Water Models.......................................50
9.3 System Start Up.................................................51
9.4 Fill Condensate Trap With Water ...........................51
9.5 Control Panel......................................................52
9.6 Prior To Commissioning:......................................53
9.7 Commissioning For The First Time: .......................53
9.8 Automatic Calibration Function .............................53
9.9 Manual Calibration Function:................................54
9.10 De-Aeration Function.........................................54
9.11 Changing The Type Of Gas ................................54
9.12 Chimney Sweep Function ..................................55
9.13 Combustion Adjustment Function (CO2%)........ 55
9.14 Check Firing Rate..............................................56
9.15 Parameter Settings ........................................... 56
9.16 Description Of Parameters: Factory Settings...... 57
9.17 Adjusting Maximum Heating Power .................. 59
10 - Operating Instructions.........................................60
10.1 Testing For Gas Leaks And Purging The Gas Supply
..............................................................................60
10.2 Boiler Operation................................................60
10.3 Central Heating Mode ........................................60
10.4 Domestic Hot Water Mode.................................. 60
10.5 Frost Protection ................................................61
10.6 Pump And Models Equipped With Three Way Valve
..............................................................................61
10.7 Low Water Pressure Sensor (Internal) ............ 61
11 - General Maintenance And Cleaning ......................62
11.1 Beginning Of Each Heating Season......................62
11.2 Maintenance And Routine Servicing.................. 63
11.3 Component Replacement And Cleaning ............ 63
11.4 Draining The Boiler ........................................... 64
11.5 Draining The Heating Circuit...............................64
11.6 Hydraulic Unit (Dhw).........................................65
11.7 Cleaning The Cold Water Filter............................65
11.8 Final Commissioning After Annual Service......... 65
11.9 Final Assembly .................................................65
11.10 User Information.............................................66
11.11 Safety Flue Thermostat ..................................... 66
11.12 Flue Pressure Switch (125-150 Only) ............ 66
11.13 Replacement Parts ..........................................66
12 - Ratings And Capacities.........................................67
12.1 Ratings And Capacity.........................................67
 ...................... 67
12.3 High Altitude Ratings.........................................68
12.4 High Altitude Chart............................................68
13 - Trouble Shooting..................................................70
13.1 Error Messages And Resetting The Boiler .......... 70
13.2 Anomalies Table For The Installer........................ 72
14 - Glossary ...............................................................73
Appendix A - Wiring Diagrams............................... 75-80
240013501 REV A [03/15/2022]

4
Dimensions
PHYSICAL DATA
Central Heating (Sealed System) 75/100 / 115 / 125 / 150 / 165 / 205
Heat Exchanger Max Allowable Working Pressure
50 psi [3.45 bar]
Max System Pressure
43 psi [2.96 bar]
Min System Pressure
7.25 psi [ 0.50 bar]
Max System temperature
176°F [80°C]
Pressure Relief Valve Setting
30 psi [2.11 bar]
Expansion Tank Minimum Size
(pre-charge press.)
(75/100/115)
1.5 gal at 11.6 psi
[5.7 L at 0.8 bar]
(125/150/165/205)
2.2 gal at 11.6 psi [8.3 L at 0.8 bar]
Recommended System Pressure (cold)
12 psi [.083 bar]
Domestic Hot Water 115 150 205
Max Inlet Water Pressure 116 psi [8 bar]
Min Inlet Water Pressure 2.9 psi [ 0.2 bar]
Min DHW Flow Rate to Activate 0.65 gpm [2.10 L/min]
Max DHW Temperature 140°F [60°C]
DHW Water Content (Domestic Hot Water Flat Plate Content) 0.035 gal [0.13 L] 0.053 gal [0.23L] 0.10 gal [0.37 L]
SYSTEM
When boiler is operating at maximum operating temperature, providing heating with all heat emitters operating, pressure gauge

DIMENSIONS 75/100 / 125 115 / 150 165 / 205
Height 30" [763 mm]
Width 17  " [450 mm]
Depth 13  " [345 mm] 21  [546 mm]
Condensate Trap Connection 13/16" [21 mm] ID Hose 3/4" [19.1 mm] NPT
System Supply 3/4” [19.1 mm] 1” [25.4 mm]
DHW Outlet
(75, 100 & 125 optional)
3/4” [19.1 mm]
Copper Sweat
1/2” [12.7 mm]
Copper Sweat
165-NA
205 - 3/4” [19.1 mm]
Gas Connection 3/4” [19.1 mm]
DHW (Cold Water) Inlet
N/A
1/2” [12.7mm]
Copper Sweat
165 - N/A
205 - 3/4” [19.1 mm]
Boiler Return 3/4” [19.1 mm] Copper Sweat 1” [25.4 mm]
Boiler Filling Connection External to Boiler
Primary Water Content 0.95 gal [3.60L] 1 gal [3.80 L] 1 gal [4.73 L]
BB
I
H
G
F
E
C
A
240013501 REV A [03/15/2022]
A
C
D

5
PHYSICAL DATA
Vent
Connector
Combustion
Air
Front View
All Models Top View
All Models
165 HEAT
ONLY
Bottom View
Dimensions
205 COMBI
Bottom View
Dimensions
150 COMBI
Bottom View
Dimensions






125 HEAT
ONLY
Bottom View
Dimensions


D E IG
C
B


DEI
G
C
B
F
DEIG
C
B
FH
D E IG
C
B
F
115 COMBI
Bottom View
Dimensions



 
75/100
HEAT ONLY
Bottom View
Dimensions
H
240013501 REV A [03/15/2022]
B
A
DE IG
C

B

F
 

 

 


 

D
C
E IHGF
B




 


6
1 - IMPORTANT INFORMATION
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
!!
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
!
DANGER
Indicates a hazardous situation which, if not avoided,
WILL result in death or serious injury.
!
This is the safety alert symbol. Symbol alerts you to
potential personal injury hazards. Obey all safety messages
following this symbol to avoid possible injury or death.
Become familiar with symbols identifying potential hazards.

glossary for additional information.
1. Safety Information
WARNING
Do not tamper with or use this boiler for any purpose
other than its intended use. Failure to follow these
instructions could result in death or serious injury.
Use only manufacturer recommended parts and
accessories.
!
CAUTION
Laceration, burn hazard. Metal edges and parts may
have sharp edges and/or may be hot. Use appropriate
personal protection equipment to include safety
glasses and gloves when installing or servicing this
boiler. Failure to follow these instructions could result
in minor or moderate injury.
!!
NOTICE
Used to address practices not related to personal
injury.
WARNING
Fire, explosion, asphyxiation and electrical shock
hazard. Improper installation could result in death or
serious injury. Read this manual and understand all
requirements before beginning installation.
!
WARNING
Fire, Explosion, Asphyxiation, Electrical shock hazard!
Flooding will result in damages such as electrical
problems, corrosion, inoperative parts, mold and other
unforeseen issues which can occur over time. Any
equipment determined by a professional as damaged

shall be replaced. Failure to follow these directions will
result in a Hazardous Situation.
!
FOR YOUR SAFETY READ BEFORE OPERATING
DANGER
!
Water
Temperature
Seng
1st Degree Burn
Exposure Time For
An Adult
2nd and 3rd Degree Burn
Exposure Time For An
Adult
  
  
  
  
  
Note: Warning for Infants, Children, and Elderly:
Great care must be taken when exposing the
aforementioned groups to warm or hot water as they
can be badly burned in exposure times less than half
of the time for an adult.
Hot Water Can Scald!
Water heated to temperature for clothes washing,
dish washing and other sanitizing needs can scald and
cause permanent injury.

handicapped persons are more likely to be
permanently injured by hot water. Never leave them
unattended in bathtub or shower. Never allow small
children to use a hot water tap or draw their own
bath.

above description, or if state laws or local codes
require certain water temperatures at hot water taps,
you must take special precautions:
• Use lowest possible temperature setting.
• Install some type of tempering device, such as
an automatic mixing valve, at hot water tap or
water heater. Automatic mixing valve must be
selected and installed according to manufacturer's
recommendations and instructions.
• Water passing out of drain valves may be
extremely hot. To avoid injury:
• Make sure all connections are tight.
• 
240013501 REV A [03/15/2022]

7
Check our website frequently for updates: www.ecrinternational.com
Information and specications outlined in this manual in eect at the
time of printing of this manual.ECR International reserves the right to
discontinue, change specications or system design at any time without
notice and without incurring any obligation, whatsoever.
2 - INTRODUCTION
2.5 Designated Use
• DCC-115,DCC-150 and DCC-205 provide both central
heating and domestic hot water.
• DCB-75, DCB-100, DCB-125 and DCB-165 central
heating only.
• Indoor installation.
• Closet or alcove installation. Direct Vent Boiler does not
require air vents when installed in closet or room.
• Direct vent boiler.
• 
(LP/propane).
2 - Introduction
2.1 Installation shall conform to requirements of authority
having jurisdiction or in absence of such requirements:
UNITED STATES
• National Fuel Gas Code, ANSI Z223.1/NFPA 54 .
• National Electrical Code, NFPA 70.
CANADA
• Natural Gas and Propane Installation Code, CAN/CSA
B149.1.
• Canadian Electrical Code, Part I, Safety Standard for
Electrical Installations, CSA C22.1
2.2 Where required by authority having jurisdiction,
installation shall conform to Standard for Controls and Safety
Devices for Automatically Fired Boilers, ANSI/ASME CSD-1.
Boiler internal low water device does not qualify for CSD-1.

2.3 Requirements for Commonwealth of
Massachusetts:
Boiler installation must conform to Commonwealth of
Massachusetts code 248 CMR which includes but is not limited
to:

2.6 The unit MUST NOT:
• Directly heat potable water. Indirect heating is
acceptable.
• Heat water with non-hydronic heating system chemicals
present (example, swimming pool water).
• Toxic chemicals, such as those used for boiler
treatment, shall not be introduced into potable water.
• Exceed 43 psig (2.96 bar) maximum system pressure,
or drop below minimum system pressure 7.25 psig (.50
bar)
• Exceed 176°F (80°C) system design temperature.
2.7 Operational Features
• DCB-75 Modulates input to provide CH Turndown
4.5:1
• DCB-100 Modulates input to provide CH Turndown
5.6:1
• DCC-115 Modulates input to provide CH Turndown
5.6:1, DHW Turndown 6.9:1
• DCB-125 Modulates input to provide CH Turndown
5.7:1
• DCC-150 Modulates input to provide CH Turndown
5.7:1, DHW Turndown 7:1
• DCB-165 Modulates input to provide CH Turndown
5.5:1
• DCC-205 Modulates input to provide CH Turndown
5.5:1, DHW turndown 7:1
Maximum output available for domestic hot water:
DCC-115 - 105,500 btu/hr (33.8 kW) capable of
providing 2.5 (U.S.) gpm (9.5 liters/min) with a
temperature rise of 70°F/39°C.
DCC-150 - 136,000 btu/h (40 kW), capable of providing
3.5 (U.S.) gpm (13.2 liters/min) with a temperature rise
of 70°F/39°C.
DCC-205 - 180,000 btu/h (53 kW), capable of providing
5.0 (U.S.) gpm (18.9 liters/min) with temperature rise
of 70°F/39°C.
• 
• Optional Outdoor Temperature Reset.
• Heat exchanger over heat protection.
• Boiler operating at maximum operating temperature,
providing heat, pressure gauge should not indicate
more than 26.11 psi / 1.80 bar. If reading exceeds this

240013501 REV A [03/15/2022]
2.4 Manufacturer recommends use of Carbon
Monoxide monitor may be requirement of local
jurisdiction.

8
3 - COMPONENT LISTING
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
ITEM
NO.
Dunkirk
DCB 75 & 100
1Pump with Air Separator
2Boiler Drain Tap
3Gas Valve
4
53-Way Valve with Motor
6 Water Safety Thermostat
7
NTC Heating sensor (Supply/
Return) QTY 2, (1 Shown for
clarity)
8Flue Sensor
9Coaxial Flue Connector
10 Heat Exchanger Temperature
Protector
11 Heat Exchanger
12 Burner (not shown)
13 Ignition electrode
14 Flame Detection Electrode
15 Air/Gas Manifold
16 Fan
17 Venturi
18 Air Vent
2
1
10
5
6
7
14
15
3
13
16
12
4
11
9
17
18
Exhaust Port
Intake Port
8
240013501 REV A [03/15/2022]
DUNKIRK - DCB-75 & 100

9
3 - COMPONENT LISTING
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
ITEM
NO.
Dunkirk
DCB 125
1Pump with Air Separator
2Boiler Drain Tap
3Gas Valve
4
53-Way Valve with Motor
6 Water Safety Thermostat
7
NTC Heating sensor (Supply/
Return) QTY 2, (1 Shown for
clarity)
8Flue Sensor
9Pressure Switch
10 Coaxial Flue Connector
11 Heat Exchanger Temperature
Protector
12 Heat Exchanger
13 Burner (not shown)
14 Ignition electrode
15 Flame Detection Electrode
16 Air/Gas Manifold
17 Venturi
18 Fan
19 Air Vent
2
1
10
5
8
6
7
14
15
3
13
18
16
17
12
4
19
11
9
Exhaust Port
Intake Port
240013501 REV A [03/15/2022]
DUNKIRK - DCB 125

10
3 - COMPONENT LISTING
ITEM
NO.
Dunkirk
DCB 165
1Pump
2Boiler Drain Tap
3
4Gas Valve
5
NTC Heating sensor (Supply/
Return) QTY 2, (1 Shown for
clarity)
6Water Safety Thermostat
7Flue Sensor
8Coaxial Connector
9Heat Exchanger Temperature
Protector
10 Heat Exchanger
11 Burner Door Temperature
Sensor
12 Burner (not shown)
13 Ignition Electrode
14 Flame Detection Electrode
15 Air/Gas Blend Manifold
16 Air Vent
17 Venturi
18 Silencer
19 Fan
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
2
1
8
7
6
5
13
9
14
4
12
19
15
17
10
16
11
18
3
Exhaust Port
Intake Port
240013501 REV A [03/15/2022]
DUNKIRK - DCB 165

11
3 - COMPONENT LISTING
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
2
1
3
8 7
10
5
12
13
11
18
14
19
6
16
21
20
15
9
23
4
ITEM
NO.
Dunkirk
DCC 115
1Pump with Air Separator
2Boiler Drain Tap
3Domestic Hot Water Turbine
4DHW Priority Sensor
5Controlled Fast Fill
6Gas Valve
7NTC DHW Sensor
8
93-Way Valve with Motor
10 Check Valve
11 DHW Heat Exchanger
12 Water Safety Thermostat
13
NTC Heating sensor (Supply/
Return) QTY 2, (1 Shown for
clarity)
14 Coaxial Connector
15 Heat Exchanger Temperature
Protector
16 Flue Sensor
17 Heat Exchanger
18 Burner (not shown)
19 Ignition Electrode
20 Flame Detection Electrode
21 Air/Gas Blend Manifold
22 Venturi
23 Fan
24 Air Vent
22
17
24
Exhaust Port
Intake Port
240013501 REV A [03/15/2022]
DUNKIRK - DCC 115

12
3 - COMPONENT LISTING
ITEM
NO.
Dunkirk
DCC 150
1Pump with Air Separator
2Boiler Drain Tap
3Domestic Hot Water Turbine
4DHW Priority Sensor
5Controlled Fast Fill
6Gas Valve
7NTC DHW Sensor
8
93-Way Valve with Motor
10 Check Valve
11 DHW Heat Exchanger
12 Water Safety Thermostat
13
NTC Heating sensor (Supply/
Return) QTY 2, (1 Shown for
clarity)
14 Flue Sensor
15 Pressure Switch
16 Coaxial Connector
17 Heat Exchanger Temperature
Protector
18 Heat Exchanger
19 Burner (not shown)
20 Ignition Electrode
21 Flame Detection Electrode
22 Air/Gas Blend Manifold
23 Venturi
24 Fan
25 Air Vent
2
1
3
8
15
7
10
5
14
13
12
11
19
16
20
6
18
22
21
23
17
9
24
4
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
Exhaust Port
Intake Port
25
240013501 REV A [03/15/2022]
DUNKIRK DCC-150

13
ITEM
NO.
Dunkirk
DCC-205
1Pump
2Boiler Drain Tap
3Domestic Hot Water Turbine
4DHW Priority Sensor
5DHW Heat Exchanger
6Gas Valve
7NTC DHW Sensor
8
93-Way Valve with Motor
10
NTC Heating sensor (Supply/
Return)
QTY 2, (1 Shown for clarity)
11 Water Safety Thermostat
12 Flue Sensor
13 Coaxial Connector
14 Heat Exchanger Temperature
Protector
15 Heat Exchanger
16 Burner Door Temperature
Sensor
17 Burner (not shown)
18 Ignition Electrode
19 Flame Detection Electrode
20 Air/Gas Manifold
21 Air Vent
22 Venturi
23 Silencer
24 Fan
3
1
2
7
13
5
12
11
10
9
19
14
20
6
18
22
21
24
15
8
3 - COMPONENT LISTING
Illustrations are a depiction of the boiler for general location of parts and may vary depending on model.
16
17
23
4
Exhaust Port
Intake Port
240013501 REV A [03/15/2022]
DUNKIRK DCC-205

14
4 - LOCATING BOILER
4.1 Boiler Location Considerations
• Ambient room temperature always above 32°F (0°C) to
prevent freezing of liquid condensate.
• Approved for installation in closets or alcove provided
it is correctly designed for that purpose and minimum
clearances are met.
• Protect gas ignition system components from water
(dripping, spraying, rain, etc.) during operation and
service (circulator replacement, condensate trap,
control replacement, etc.).
• Access to outdoors to meet minimum and maximum
pipe lengths for combustion air and vent piping. See
section 5.
• Disposal of condensate. See section 5.
• Drainage of water (or water - antifreeze solution)
during boiler service or from safety relief valve
discharge. See section 6.
• Access to system water piping, gas supply, and
electrical service. See sections 6, 7 and 8.
• Clearances to combustible materials and service
clearances. See Table 1 and Figures pg. 15.
• 
capable of supporting the weight of the boiler.
• Room-sealed boiler installed in a room containing bath
or shower shall be installed so person using bath or
shower cannot touch any electrical switch or boiler
control utilizing line voltage electricity.
• Multiple Boilers can be wall mounted, placed side by
side, or back to back.
• Observe service clearances in all installations.
• For Direct Vent installations, air vents are not required
in room boiler is installed in, or when installed in closet
or compartment.
• Requires fresh air intake piped from outdoors, do not
install where air inlet is dusty or dirty.
• 


air intake section of the vent pipe. Boiler performance
at maximum vent length may be impacted when an air

• Use of unregulated gas (well gas) is not manufacturer
recomended with this boiler.
TABLE 1: BOILER CLEARANCES
Dimension Combustible
Materials (1)
Manufacturer
Recommended
for Service(1)(2)
Top
0" (0 cm) 8-5/8" (220 mm)
Left Side
1-3/4" (45 mm) 1-3/4" (45 mm)
Right Side
1-3/4" (45 mm) 1-3/4" (45 mm)
Front
0" (0 mm) 17-3/4"(450 mm)
Back
0" (0 mm) 0" (0 mm)
Bottom
0" (0 mm) *9-13/16"
(250 mm)
Combustion Air/
Vent piping
0" (0 mm) 6" (160 mm)
(1) Required distances measured from boiler jacket.
(2) Service, proper operation clearance recommendation.
* Allowance for piping at the bottom of boiler not included.
WARNING
Fire Hazard! Do not install on carpeting. Failure to
follow these instructions could result in death or
serious injury.
!

protection clearances.
240013501 REV A [03/15/2022]

15
4 - LOCATING BOILER
Minimum ClearanceMinimum Clearance
17 ¾ in. [450 mm ]17 ¾ in. [450 mm ]
From Front of BoilerFrom Front of Boiler
13.58 in /
345.00 mm
11    inin
[45 mm][45 mm]
17  in
[450 mm]
8 ⅝in [220 mm]
9 in [250 mm]
30 in
[763 mm]
75, 100, 115, 125 & 150
13   in
[345 mm]
4.2 Clearances
165 & 205
21½in
[546 mm]
11    inin
[45 mm][45 mm]
Left Side View
of Boiler
Front View of
Boiler
Service Clearances
Combustible Clearances
1  in
[45 mm]
17in
Top ViewTop View
BackBack
Closet Installation
0 in /0 mm between Back of Unit and wall0 in /0 mm between Back of Unit and wall
1  in
[45 mm]
1in
[45 mm]
1in
[45 mm]
[450 mm]
Front View of Boiler
0in
[0 mm]
0in
[0 mm]
Top View
0in
[0 mm]
0in
[0 mm]
240013501 REV A [03/15/2022]

16
4 - LOCATING BOILER
CAUTION
Boiler weight exceeds 140 pounds (63.5 kg). Do not
lift boiler onto wall without assistance.
!!
4.3 Wall Mounting
1. Decide position of boiler on the wall allowing for all

2. Tape template to the wall. Ensure template is level and
upright. Mark position of holes for boiler mounting bracket
and plumbing connections.
3. 
4. 
the wall to side wall, then along side wall (ensure lines are
parallel and sloped properly towards the boiler, refer to

5. 
• 75, 100, 115, 125 & 150 - 4 " [110 mm] diameter
• 165 & 205 - 5 " [135 mm] diameter
6. Pre-pipe supply and return water connections with factory

7. Mount boiler on wall using wall mounting bracket included
with unit.
8. Adjust the position of the boiler verify it is level and plumb.
Note Lift boiler using chassis. Do not use front jacket,

may cause damage to the boiler.


piping can be damaged if subjected to excessive
torque.
Note
FIGURE 4-2 Wall Mount Bracket (Included)
Center brackets. Avoid
overhang on sides of
wall mount bracket.
Use four (4) predrilled
holes for mounting
bracket to wall
240013501 REV A [03/15/2022]