ECR International 75F Guida utente

Manufactured by:

ECR International Inc.

2201 Dwyer Avenue, Utica, NY 13501

Tel. 800 325 5479

www.ecrinternational.com

PN 240012875 REV. D [03/15/2022]

APPLICATION GUIDE

FOR USE WITH

FLOOR STANDING

HEATING ONLY - 75F, 100F, 125F, 165F

COMBI - 115F, 150F, 205F

This manual has been prepared for use with the appropriate Installation, Operation and

Maintenance Manual.

2PN 240012875 REV. D [03/15/2022]

TABLE OF CONTENTS

Important Safety Information ........................................................................................ 3

Labor Saving Piping Manifolds / Near Boiler Piping Connections.................................... 4

General Information - Hydronic Piping ........................................................................... 6

General Information - wiring.......................................................................................... 8

Piping and Wiring Diagrams

Piping Legend................................................................................................................. 9

75F, 100F, 125F w/Zone circulators & DHW Tank- piping diagram .....................................10

75F, 100F, 125F W/Indirect Zone circulators, DHW tank w/Sensor - Wiring Dia. ..................11

75F, 100F, 125F w/Indirect Zone circulators & DHW Tank w/t-stat - WIRING Dia.................12

75F, 100F, 125F with Zone Valves & DHW Tank - PIPING Diagram ....................................13

75F, 100F, 125F with Zone Valves, DHW Tank W/Sensor - Wiring Dia. ...............................14

75F, 100F, 125F zone valves, DHW tank w/t-stat - wiring Diagram ....................................15

165F with Zone Circulators - PIPING Diagram .................................................................16

165F indirect Zone Circulators, DHW Tank w/ T-Stat - Wiring Dia. .....................................17

165F with zone Valves - PIPING Diagram .......................................................................18

165F with Indirect Zone Valves, DHW Tank, Tank T-Stat - Wiring Dia. ...............................19

115F, 150F & 205F with zone circulators - PIPING Diagram ..............................................20

115F, 150F & 205F with zone Circulators - Wiring Diagram...............................................21

115F, 150F & 205F with Zone Valves - PIPING Diagram ...................................................22

115F, 150F & 205F with Zone Valves - Wiring Diagram ...................................................23

 ......................................................................24

 .......................................................................26

Optional Equipment...................................................................................................... 29

.................................................................29

.............................................................29

Accessories .................................................................................................................. 30

...................................................................................30

Indirect Storage Tank Sensor ......................................................................................31

Wiring Diagrams

Single Zone Circulator Wiring Using ARGO AR822-II ........................................................32

75 & 100 - Heat Only Wiring Diagram ............................................................................33

125 - Heat Only Wiring Diagram ...................................................................................34

165 - Heat Only Wiring Diagram ...................................................................................35

115 - combi Wiring Diagram........................................................................................36

150 - combi Wiring Diagram........................................................................................37

205 - combi Wiring Diagram........................................................................................38

Altitude Eects On Boiler Performance......................................................................... 39

Application Table - Indirect Hot Water Tank Sizing ...................................................... 41

LWCO Wiring Diagram .................................................................................................. 42

Piping Diagram - LWCO Location .................................................................................. 43

Low Water Cuto - Detail ............................................................................................. 44

Error Code Table........................................................................................................... 45

Troubleshooting Chart.................................................................................................. 46

Fault Solution Sections................................................................................................. 48

PARAMETER CHANGE HISTORY..................................................................................... 52

3PN 240012875 REV. D [03/15/2022]

IMPORTANT SAFETY 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 toThis is the safety alert symbol. Symbol alerts you to

potential personal injury hazards. Obey all safety messagespotential personal injury hazards. Obey all safety messages

following this symbol to avoid possible injury or death.following this symbol to avoid possible injury or death.

1.1. Become familiar with symbols identifyingBecome familiar with symbols identifying

potential hazards.potential hazards.

2. General

Boiler installation shall be completed by qualified agency.

See Installation, Operation & Maintenance Manual for

additional information.

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.

3. 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

4. Where required by authority having jurisdiction,

installation shall conform to Standard for Controls

and Safety Devices for Automatically Fired Boilers,

ANSI/ASME CSD-1.

Additional manual reset low water cutoff and/or high limit

may be required.

5. Requirements for Commonwealth of

Massachusetts:

Boiler installation must conform to Commonwealth of

Massachusetts code 248 CMR which includes but is not

limited to:

• Installation by licensed plumber or gas fitter.

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 by a flood, defined

as excess of water or other liquid, shall be

replaced. Failure to follow these directions will

result in a Hazardous Situation.

4PN 240012875 REV. D [03/15/2022]

LABOR SAVING PIPING MANIFOLDS / NEAR BOILER PIPING CONNECTIONS

LEGEND 75/100/125 165

Heating Supply Connection 

sweat

[31.75 mm]



sweat

[38.1 mm]

Condensate Drain Connection

1/2" NPT

Gas Shutoff Connection 3/4"

NPT

Optional Indirect DHW Connection

(may exit right or left)

3/4"

sweat

[22.2 mm]

Heating Return Connection 

sweat

[31.8 mm]



sweat

[38.1 mm]

75F, 100F & 125F HEATING ONLY

WITH OPTIONAL INDIRECT DHW CONNECTION

75F, 100F & 125F HEATING ONLY

WITHOUT OPTIONAL INDIRECT DHW

CONNECTION

165F HEATING ONLY

5PN 240012875 REV. D [03/15/2022]

LABOR SAVING PIPING MANIFOLDS / NEAR BOILER PIPING CONNECTIONS

115F & 150F/205F COMBI (150 shown)

LEGEND 115/150 205

Heating Supply Connection 

sweat

[31.75 mm]



sweat

[38.1 mm]

Domestic Hot Water Outlet 1/2"

sweat

[12.7 mm]

3/4"

sweat

[22.2 mm]

Condensate Drain Connection 1/2" NPT

Gas Shutoff Connection 3/4" NPT

Domestic Cold Water Inlet



sweat

[12.7 mm]

3/4"

sweat

[22.2 mm]

Heating Return Connection 

sweat

[31.8 mm]



sweat

[38.1 mm]

E FA DCB

6PN 240012875 REV. D [03/15/2022]

GENERAL INFORMATION - HYDRONIC PIPING

WARNING

Burn and scald hazard! Manufacturer requires

installation of field supplied anti-scald valve.

Failure to follow these instructions could result in

death or serious injury.

FOR YOUR SAFETY READ BEFORE OPERATING

DANGER

Hot Water Can Scald!

Water heated to temperature for clothes

washing, dish washing and other sanitizing needs

can scald and cause permanent injury.

Children, elderly, and infirmed or physically

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.

If anyone using hot water in the building fits the

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.

 Direct water flow away from any person.

General Information:

Piping installation, materials, and joining methods shall

conform to requirements of authority having jurisdiction or

in absence of such requirements:

• USA - National Fuel Gas Code, ANSI Z223.1/NFPA 54

• Canada - Natural Gas and Propane Installation Code,

CAN/CSA B149.1

Manufacturer Requirements/Recommendations:

• Manufacturer requires all domestic hot water

(DHW) installations use an anti-scald valve.

Local codes may require additional equipment

(expansion tank, relief valves, etc.) Select and

size equipment to suit installation and meet code

requirements.

• Use a water filter on potable incoming water supply

line.

• Manufacturer recommends use of a magnetic dirt

separator in the hydronic system where there are

cast iron or steel components, or where the previous

boiler was a cast iron heat exchanger. The abrasive,

extremely fine sediment is difficult to remove and can

deposit onto heat exchanger surfaces and accumulate

in pump cavities causing reduced efficiency and

premature wear.

• If the piping manifold is not used the ASME

temperature and pressure relief valve and

temperature and pressure gauge shall be installed

to conform to requirements of the authority having

jurisdiction. Refer to appropriate manufacturer

instructions for installation requirements.

• If the piping manifold is not used, a primary /

secondary piping arrangement is manufacturer

required, unless using Buffer Tank. A maximum of

12 in of separation between the supply and return

pipe (closely spaced tees) of the boiler shall be

maintained. Limit combined supply and return pipe

lengths to maximum linear lengths of 20 ft (6.1

m) between boiler and closely spaced tees, when

minimum ¾ in NPT pipe size is used. Linear length

may be increased if supply and return pipe size is

increased to limit pressure drop.

• Manufacturer recommends installing a shutoff

and purge valve to use during commissioning to

ensure the boiler does not shut down due to over

temperature. Do not install shutoff between boiler

and LWCO or pressure relief valve.

7PN 240012875 REV. D [03/15/2022]

Note

Provided Wiring and Piping illustrations

are meant to show system concepts only.

Installer is responsible for all equipment

required by authority having jurisdiction.

Note Arrange piping to prevent water dripping

onto boiler.

All piping diagrams are shown with optional DHW Indirect

Tank where applicable.

GENERAL INFORMATION - HYDRONIC PIPING

Water

Temperature

Seng

1st Degree Burn

Exposure Time For

An Adult

2nd and 3rd Degree Burn

Exposure Time For An

Adult

120° F 1 minute 5 minutes

130° F 5 seconds 30 seconds

140° F 2 seconds 5 seconds

150° F 1 second 1.5 seconds

160° F Instantaneous 0.5 seconds

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.

Use of Buffer Tank:

☐If using internal boiler pump, manifold shall be cut for

use as shown on page 24. Increase pipe size to match



☐Locate tank as close to boiler as possible.

The Labor Saver Piping Manifold, which is supplied with

each boiler, is shown with most of the following piping

diagrams.

Use of Indirect Water Heater (DHW) Heating

Only Boiler:

Note Sensors supplied with this boiler are

proprietary to the manufacturer. Use of

alternate sensors WILL diminish boiler

performance.

☐Use DHW sensor kit 550003189 to interface with

boiler. Wire to M2 terminals #3 and #4. Exception: not

applicable for the 165 model, use aquastat for indirect

tank control.

☐For heating only boilers with DHW outlet connection,

see page 4, indirect water heater shall be piped

utilizing the internal boiler pump. See pages 10 and 13.

☐Locate tank as close to boiler as possible.

☐See Indirect Tank Performance chart, page 40 of this

manual.

☐

applicable wire diagram in this manual or Boiler Control

Section 9 of Installation, Operation & Maintenance

Manual supplied with the boiler.

8PN 240012875 REV. D [03/15/2022]

GENERAL INFORMATION - WIRING

Electrical Wiring Information:

All field wiring shall conform to the authority having

jurisdiction or, in the absence of such requirements to:

• USA: National Electrical Code, ANSI/NFPA 70,

• Canada: Canadian Electrical Code, Part I, CSA

C22.1: Safety Standard for Electrical Installations.

Wiring diagrams shown in this manual utilize ARGO™

Controls, the optional use of an Indirect Domestic Hot

Water Tank, and optional use of a H2O Buffer Tank.

Reference the zone control manufacturer instruction

manual for control operation and priority setting of DHW

zones.

Note DO NOT use 120 V thermostat

terminals (M1- #1 and #2).

Provided Wiring and Piping

illustrations are meant to show

system concepts only. Installer

is responsible for all equipment

required by authority having

jurisdiction.

Note

SUPPLY Cord

120V/60HZ

BOILER CONTROL

10k Ω DHW Indirect

Tank Sensor (125

Unit Only)

DHW Indirect Tank

Aquastat (Heating

Only Boilers)

1K Ω

Outdoor

Reset

Sensor

Zone Control

End-Switch

Open Therm

0-10 V Connection

* Ground Sensors using terminal 4

Do Not

Use

9PN 240012875 REV. D [03/15/2022]

PIPING LEGEND

ZONE VALVE

BALL VALVE

AIR SEPERATOR

CIRCULATOR

DRAIN

COMBINATION FILL



BYPASS VALVE

DIVERTER VALVE

T&P OR RELIEF VALVE

THERMOSTATIC MIXING VALVE





10K Ω 

TEMPERATURE & PRESSURE GAUGE



FLAT PLATE HEAT EXCHANGER

(COMBI ONLY)

STRAINER

PIPING LEGEND

PURGE VALVE

MAGNETIC DIRT SEPARATOR

10 PN 240012875 REV. D [03/15/2022]

75F, 100F, 125F W/ZONE CIRCULATORS & DHW TANK- PIPING DIAGRAM

75F, 100F & 125F W/ ZONE CIRCULATORS & DHW TANK- PIPING DIAGRAM

Shut off &

Purge Valve

MAGNETIC DIRT

SEPARATOR

Locate shut off valve after

any field installed LWCO.

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