Laars FTHW User Manual
Installation and Operation Instructions Document 1342H
Installation and Operation
Instructions for
THE
FT
Wall-Mounted, Modulating
Gas, Condensing, Heating Only, Boiler
Model FTHW
SERIES
80,000 BTU/hr
100,000 BTU/hr
120,000 BTU/hr
140,000 BTU/hr
199,000 BTU/hr
• Natural Gas (NG) - Factory Conguration
• Propane Gas (LP) - Field-Convertible
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler and heater installation and maintenance. Improper installation and/or operation
could create carbon monoxide gas in ue gases which could cause serious injury, property damage, or
death. Improper installation and/or operation will void the warranty.
WARNING
If the information in this manual is not
followed exactly, a re or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
ammable vapors and liquids in the vicinity of
this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the re department.
Installation and service must be performed
by a qualied installer, service agency, or gas
supplier.
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d’incendie ou d’explosion
ou pour éviter tout dommage matériel, toute
blessure ou la mort.
Ne pas entreposer ni utiliser d’essence ou ni
d’autres vapeurs ou liquides inammables dans
le à proximité de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE
GAZ:
• Ne pas tenter d’allumer d’appareils.
• Ne touchez à aucun interrupteur. Ne pas vous servir
des téléphones dans le bâtiment où vous vous
trovez.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions
du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le sservice des incendies.
L’installation et l’entretien doivent être assurés par
un installateur ou un service d’entretien qualié
ou par le fournisseur de gaz.
H2375000H
TABLE OF CONTENTS
SECTION 1 Product Accessories
1.1 Introduction ...................................................... 3
1.2 Included with the Unit ....................................... 3
SECTION 2 Product Characteristics
2.1 Model Nomenclature (model number) ..............4
2.2 Specications, 80 MBH and 100 MBH ............. 5
2.3 Dimensions ...................................................... 8
2.4 Names of Components .................................. 10
2.5 Product Flow Paths and Characteristics ........ 13
4.14.7 Multiple units using zones pumps
and an indirect for DHW
4.15 Pressure Relief Valve ..................................... 47
4.16 Disposal of Condensate ................................. 48
4.17 Electrical Wiring Connections ........................ 49
4.18 DIP Switches .................................................. 50
4.19 Control Board, Electrical Diagram ................. 51
4.20 Ladder Diagram ............................................. 52
4.21 Electrical Connections .................................... 53
................................ 46
SECTION 3 Safety Regulations
3.1 Safety Symbols .............................................. 14
3.2 Safety Precautions and Proper Use ............... 16
SECTION 4 Installation
NOTE: For Cascading Installations, please refer to
document 1349 ‘Cascading the FT Series Boiler’,
available online.
4.1
4.1 Location and Clearances ............................... 17
4.2 Wall Mount Bracket ........................................ 18
4.3 Combustion Air ...............................................19
4.4 Venting (Exhaust) ...........................................21
4.5 General Location Guideline ............................22
4.6 Locations for Vent Pipe Terminator ................ 23
4.6.1 Direct Venting Clearances ............................. 23
4.6.2 Venting Requirements in
the Commonwealth of Massachusetts ........... 24
4.7 Air Supply and Vent Connections ................... 26
4.7.1 Vent / Air Pipe Lengths ................................... 26
4.7.2 Direct Venting ................................................. 26
4.7.3 Indoor Combustion Air ................................... 27
4.8 Vent / Air Pipe Termination ............................. 27
4.9 Gas Supply and Piping ................................... 30
4.10 Gas Supply Pressure ..................................... 35
4.11 Gas Setup and Adjustment ............................ 36
4.12 High Altitude Installations. ........................... 37
4.13 Natural Gas to Propane Conversion ........... 38
4.14 Plumbing Guidelines ..................................42
4.14.1 External Plumbing and
Water Connection Guidelines ......................... 42
4.14.2 Applicable Backow Preventer ....................... 42
4.14.3 Diaphragm type Expansion tank .................... 42
4.14.4 Zoning with zone valve ................................... 43
4.14.5 Zoning with circulation pumps ........................ 44
4.14.6 Indirect Water Heating .................................... 45
SECTION 5 Control Display and Operation
5.1 Control Dial and Buttons ................................ 55
5.2 LCD Overview ............................................... 56
5.3 Operating Mode ............................................. 57
5.4 Setting the Clock ............................................ 58
5.5 CH Set Point Change Mode ........................... 59
5.6 Status Display Mode ...................................... 60
5.7 Installer Mode ................................................. 61
5.8 Storage Mode ................................................ 64
5.9 Outdoor Reset Adjustment ............................. 65
5.10 External Set Point Temperature Control ......... 65
5.11 Error Mode ..................................................... 66
SECTION 6 Error Codes
6.1 Error Code Table ............................................ 67
6.2 Fault Tree Analysis ........................................ 70
SECTION 7 Trouble Shooting
7.1 Diagnostics ..................................................... 72
7.2 Suggested Corrective Actions ........................ 73
SECTION 8 Maintenance
8.1 Annual startup & general maintenance .......... 75
8.2 Flushing the Boiler ......................................... 77
8.3 Freeze Protection ........................................... 77
SECTION 9 Installation Check
9.1 Quick View ..................................................... 78
9.2 Final Check Lists ............................................ 79
SECTION 10 Parts
10.1 Parts Lists & Illustrations (models 080-140) ... 80
10.2 Parts Lists & Illustrations (model 199) ............ 86
The FT Series Heating Only, Boiler
SECTION 1 Product Accessories
1.1 Introduction
This manual provides information necessary for the
installation, operation, and maintenance of the FT Series
Heating Only , Boiler. All application and installation
procedures must be read and reviewed completely before
proceeding with the installation. Consult the manufacturer
(see the back cover), or your local manufacturer’s
representative, with any problems or questions regarding
this equipment. Experience has shown that most operating
problems are caused by improper installation.
1.2 Included with the Unit
Item Description Qty
Page 3
All installations must be made in accordance with
1) American National Standard Z223.1/NFPA54-Latest Edition
“National Fuel Gas Code” or
2) CSA B149.1 “Natural Gas and Propane Installation Code” and
with the requirement of the local utility or other authorities having
jurisdiction. Such applicable requirements take precedence over
the general instructions contained herein.
All electrical wiring is to be done in accordance with the local
codes, or in the absence of local codes, with: 1) The National
Electrical Code ANSI/NFPA No. 70-latest Edition, or 2) CSA
STD. C22.1 “Canadian Electrical Code - Part 1”. This appliance
must be electrically grounded in accordance with these codes.
Wall Mounted Boiler
FTHW (all sizes)
Installation Instructions and
User’s Manual
Condensate Hose
Wall Mount Bracket
2 types of Wall Anchors
1
1
1
FT1894
4
4
1
Pressure Relief Valve
(CH LINE 3/4
˝
30psi)
Model: CASH ACME F-82
Mesh Screens
3”
1
2
Page 4
1.2 Included with the Appliance (continued)
Items Descriptions Qty
Propane Conversion Orice
80 / 100 / 120 / 140 MBH
O-Ring and Gasket Kit 1
Outdoor Temperature Sensor
with anchors and screws
Auto Fill Valve and Backow Preventer Valves are NOT
included (Field Supplied).
199 MBH
1
SECTION 2 Product Characteristics
2.1 Model Nomenclature (model number)
The Model Nomenclature is shown on your Rating Plate and consists of a series of letters and numbers
( Nomenclature ) that further identies the characteristics of your FT.
2 3 4 5 6 7 8 9 10 11 12 13
1
F T H W A 1 X N
M
SERIES
FT
H - Heating Only
CONFIG
W - Wall Hung
SIZE
MBTU/h
80
100
120
140
199
FUEL
N - Natural
P - Propane
ALTITUDE
A -
0 -10,000 Feet
REVISION
1 -
First
OPTIONS
X - Standard
MODEL NUMBER
N - with Pump
PUMP
The FT Series Heating Only, Boiler
2.2 Specications, 80 MBH and 100 MBH
Model Name FTHW80 FTHW100
Page 5
Gas Input Rate
Installation Indoor / Wall hung type
Flue System
Vent Run 2˝(50ft*) , 3˝(100ft) Schedule 40 CPVC, PP
Orice Size
Gas Supply Pressure
Manifold Pressure
Power Supply
Ignition System
Burner System
MAX 80,000 Btu/h 100,000 Btu/h
MIN 16,000 Btu/h 20,000 Btu/h
Sealed Combustion Direct / Single Vent /Sidewall
NG 0.2”(5.05mm) 0.215˝ (5.45mm)
LP 0.157”(4.0mm) 0.169˝ (4.3mm)
NG 3.5˝ WC to 10.5˝ WC
LP 8.0˝ WC to 13.0˝ WC
Gas type LP NG
Max re
Min re
Main Supply 120V 60Hz / 4A
Maximum Power
Consumption
-0.102
˝
WC -0.102˝ WC
0.00
˝
WC 0.00˝ WC
Direct Electronic Ignition / Automatic Flame
Single Orice Premixed Fuel Modulation Metal
Vent
160W
Sensing
Ceramic Infrared
Gas Valve System Combination modulating (Current proportional)
Dimensions W17.3˝ - H29.0˝ – D14.9˝
Shipping Weight
Main Controller / Control Display NGTB-900CP / P-950EH
Water Pressure CH Min 15 ~ Max 30 PSI
CH Supply/Return 1 ¼˝ NPT
Connection Sizes
Gas Inlet 3/4˝ NPT
Casing Cold Rolled Carbon Steel
Materials
Heat Exchanger
Safety Devices
*Allowable 2” vent length for propane is 25’
98 lbs (44 kg)
Primary Heat Exchanger : Stainless Steel
Sub Heat Exchanger : Stainless Steel
Flame Rod, Overheat Cut Off Device, Gas Valve
Operation Detector, Water Temperature Sensor,
Over-heat Limit Switch,
Page 6
2.2 Specications, 125 MBH and 140 MBH
Model Name FTHW120 FTHW140
Gas Input Rate
Installation Indoor / Wall hung type
Flue System
Vent Run 2˝(50ft*) , 3˝(100ft) Schedule 40 CPVC, PP
Orice Size
Gas Supply Pressure
Manifold Pressure
Power Supply
Ignition System Direct Electronic Ignition / Automatic Flame Sensing
MAX 120,000 Btu/h 140,000 Btu/h
MIN 24,000 Btu/h 28,000 Btu/h
Sealed Combustion Direct / Single Vent /Sidewall
NG 0.213˝ (5.4mm) 0.255˝ (6.5mm)
LP 0.173˝ (4.4mm) 0.191˝ (4.85mm)
NG 3.5˝ WC to 10.5˝ WC
LP 8.0˝ WC to 13.0˝ WC
Gas type LP NG
Max re
Min re
Main Supply 120V 60Hz / 4A
Maximum Power
Consumption
-0.216
˝
WC -0.216˝ WC
0.00
˝
WC 0.00˝ WC
Vent
160W
Burner System
Gas Valve System Combination modulating (Current proportional)
Dimensions W17.3˝ - H29.0˝ – D14.9˝
Shipping Weight 102 lbs (46 kg)
Main Controller / Control Display NGTB-900CP / P-950EH
Water Pressure CH Min 15 ~ Max 30 PSI
CH Supply/Return 1 ¼˝ NPT
Connection Sizes
Gas Inlet 3/4˝ NPT
Casing Cold Rolled Carbon Steel
Materials
Heat Exchanger
Safety Devices
*Allowable 2” vent length for propane is 25’
Single Orice Premixed Fuel Modulation Metal
Ceramic Infrared
Primary Heat Exchanger : Stainless Steel
Sub Heat Exchanger : Stainless Steel
Flame Rod, Overheat Cut Off Device, Gas Valve
Operation Detector, Water Temperature Sensor,
Over-heat Limit Switch,
The FT Series Heating Only, Boiler
2.2 Specications, 199 MBH
Model Name FTHW199
Page 7
Gas Input Rate
Installation Indoor / Wall hung type
Flue System Sealed Combustion Direct / Single Vent / Concentric Vent
Vent Run 2˝(50ft*) , 3˝(100ft) Schedule 40 CPVC, PP
Orice Size
Gas Supply Pressure
Manifold Pressure
Power Supply
Ignition System Direct Electronic Ignition / Automatic Flame Sensing
MAX 199,000 Btu/h
MIN 19,900 Btu/h
NG 0.326˝ (8.3mm)
LP 0.244˝ (6.2mm)
NG 3.5˝ WC to 10.5˝ WC
LP 8.0˝ WC to 13.0˝ WC
Gas type
Max re
Min re
Main Supply 120V 60Hz / 4A
Maximum Power
Consumption
LP NG LP NG
-0.169
˝
WC -0.129”W.C -0.173˝ WC -0.134˝ WC
-0.015”W.C -0.015”W.C -0.015
160W
˝
WC -0.015˝ WC
Burner System
Gas Valve System Combination modulating (Current proportional)
Dimensions W19.6˝ - H32.0˝ – D16.2˝
Shipping Weight 118 lbs (54 kg)
Main Controller / Control Display NGTB-900CP / P-950EH
Water Pressure Min 15 ~ Max 30 PSI
Connection Sizes
Materials
Safety Devices
CH Supply/Return 1 ¼˝ NPT
Gas Inlet 3/4˝ NPT
Casing Cold Rolled Carbon Steel
Heat Exchanger
Detector, Water Temperature Sensor, Over-heat Limit Switch,
*Allowable 2” vent length for propane is 25’
Single Orice Premixed Fuel Modulation Metal Ceramic
Infrared
Primary Heat Exchanger : Stainless Steel
Sub Heat Exchanger : Stainless Steel
Flame Rod, Overheat Cut Off Device, Gas Valve Operation
Page 8
2.3 Dimensions
FTHW
80/100/120/140
Heating only boiler
Description Diameter
A Air Intake Collar 3˝
B Vent Pipe Collar 3˝
C 'CH' Supply
D 'CH' Return
E Gas Inlet 3/4˝
F Condensate Line 1/2˝
1
1
¼˝
¼˝
The FT Series Heating Only, Boiler
2.3 Dimensions
Page 9
FTHW
Heating only boiler
199
Description Diameter
A Air Intake Collar 3˝
B Vent Pipe Collar 3˝
C 'CH' Supply
D 'CH' Return
E Gas Inlet 3/4˝
F Condensate Line 1/2˝
1
1
¼˝
¼˝
Page 10
2.4 Names of Components
FTHW
80/100
Heating only boiler
4 SCREWS
CONTROL
DISPLAY COVER
(HINGES UPWARD)
NO Name of Component
1
Air Vent (air eliminator)
2
Air Intake Collar
3
Air / Gas Mixing Pipe
4
Gas Inlet Pipe 2
5
Gas Valve
6
Exhaust Duct
7
Low Water Temperature Sensor
8
OP Sensor
9
Flame Detecting Sensor
10
Main PCB
11
Control Display
12
Manual ON/OFF Power Switch
13
Gas Inlet Pipe 1
14
‘CH’ Internal Pump
15
Gas Inlet Adapter
16
‘CH’ Supply Adapter
To remove the cover, unthread the 4 phillips head screws.
Keep the screws in a safe place for re-application of cover.
This is typical for all models of the FT.
NO Name of Component
17
CH Pressure Gauge
18
‘CH’ Return Adapter
19
Condensate Trap
20
Condensate Adapter
21
CH Return Temperature Sensor
22
Condensate Air Pressure Switch
23
Terminal Block
24
Heat Exchanger
25
Ignition Transformer
26
Sight Glass
27
Burner Overheat Switch
28
Igniter
29
BLDC Fan (blower)
30
Exhaust Temperature Sensor
31
Air Pressure Sensor
32
Vent Pipe Collar
The FT Series Heating Only, Boiler
2.4 Names of Components (continued)
Page 11
FTHW
120/140
Heating only boiler
NO Name of Component
1
Air Vent (air eliminator)
2
Air Intake Collar
3
Air / Gas Mixing Pipe
4
Gas Inlet Pipe 2
5
Gas Valve
6
Exhaust Duct
7
Low Water Temperature Sensor
8
OP Sensor
9
Flame Detecting Sensor
10
Main PCB
11
Control Display
12
Manual ON/OFF Power Switch
13
Gas Inlet Pipe 1
14
‘CH’ Internal Pump
15
Gas Inlet Adapter
16
‘CH’ Supply Adapter
NO Name of Component
17
CH Pressure Gauge
18
‘CH’ Return Adapter
19
Condensate Trap
20
Condensate Adapter
21
CH Return Temperature Sensor
22
Condensate Air Pressure Switch
23
Terminal Block
24
Heat Exchanger
25
Ignition Transformer
26
Sight Glass
27
Burner Overheat Switch
28
Igniter
29
BLDC Fan (blower)
30
Exhaust Temperature Sensor
31
Air Pressure Sensor
32
Vent Pipe Collar
Page 12
2.4 Names of Components (continued)
FTHW
Heating only boiler
199
NO Name of Component
1
Air Vent (air eliminator)
2
Air Intake Collar
3
Gas Valve
4
Gas Inlet Pipe 2
5
Air / Gas Mixing Pipe
6
Gas Inlet Pipe 1
7
Exhaust Duct
8
OP Sensor
9
Low Water Level Sensor
10
Main PCB
11
Flame Detecting Sensor
12
Control Display
13
Manual ON/OFF Power Switch
14
‘CH’ Internal Pump
15
Gas Inlet Adapter
16
‘CH’ Supply Adapter
NO Name of Component
17
CH Pressure Gauge
18
‘CH’ Return Adapter
19
Condensate Trap
20
Condensate Adapter
21
CH Return Temperature Sensor
22
Condensate Air Pressure Switch
23
Terminal Block
24
Heat Exchanger
25
Ignition Transformer
26
Sight Glass
27
Burner Overheat Switch
28
Igniter
29
BLDC Fan (blower)
30
Exhaust Temperature Sensor
31
Air Pressure Sensor
32
Vent Pipe Collar
The FT Series Heating Only, Boiler
Gas
Input
Air Intake
2.5 Product Flow Paths and Characteristics
Water in the heating pipe is used for space heating.
Combustion
Air
Page 13
Vent
CH Supply CH Return
CH = Central Heat
Page 14
SECTION 3 Safety Regulations
3.1 Safety Symbols
WARNING
To avoid product damage, personal injury, or even
possible death, carefully read, understand, and
follow all the instructions in the Installation and
Operation manual before installation, operation
and service the Boiler.
Manufacturer cannot anticipate every
circumstance that might involve a potential
hazard. Therefore, all possible incidents are not
included in our warnings. Proper installation,
operation, and service are your responsibility.
You must make sure that the operation and
settings of the Boiler are safe for you and for
others.
This manual provides Safety Symbols. When the
user fails to adhere to the following requirement,
it may cause death, serious injury, and substantial
property damage.
For safety symbols, ‘DANGER’, ‘WARNING’,
CAUTION’ are indicated and the denitions for these
terms are as follow:
DANGER
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury. This signal word is limited to the
most extreme situations.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
CAUTION
WARNING
FOR YOUR SAFETY READ BEFORE
OPERATING
If you do not follow these instructions exactly, a
re or explosion could result causing property
damage, personal injury or loss of life.
A. This appliance does not have a pilot. It
is equipped with an ignition device which
automatically lights the burner. Do not try to
light the burner by hand.
B. BEFORE OPERATING smell all around the
appliance area for gas. Be sure to smell next
to the oor because some gas is heavier than
air and will settle on the oor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any
phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
re department.
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will
not push in or turn by hand, don’t try to repair
it, call a qualied service technician. Force
or attempted repair may result in a re or
explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a qualied
service technician to inspect the appliance and
to replace any part of the control system and
any gas control which has been under water.
Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderate injury. It is also used to alert against
unsafe practices and hazards involving only
property damage.
WARNING
Cancer and Reproductive Harm.
www.P65WARNINGS.CA.GOV.
as required by the state of California Proposition 65.
This appliance must be installed in accordance with
local codes if any; if not, follow ANSI Z224.1/NFPA
54 or CAN/CSA B149.1, Natural Gas and Propane
Installation Code, as applicable.
This appliance is certied for use at altitudes up
to 4,500ft(1,370m) in accordance to the latest CSA/
CGA 2.17-M91 Gas-Fired Appliances for Use at
High Altitudes.
The FT Series Heating Only, Boiler
DANGER
Vapors from ammable liquids will explode and
catch on re. These will cause death or severe
burns.
Do not use or store ammable products such as
gasoline, solvents or adhesives in the same room
or area near the appliance.
Keep ammable products
Far away from boiler
In approved containers
Tightly closed
Out of children’s reach
Vapors
Cannot be seen
are heavier than air
spread on the oor
Can spread from other rooms to the main burner
by air currents
Do not install the appliance where ammable
products will be stored.
Read and follow boiler warnings and instructions
thoroughly. If owner’s manual is missing, contact
the retailer or manufacturer.
This boiler must be installed by a qualied plumber,
a licensed gas tter, and/or a professional service
technician.
Improper installation and/or operation will cause a
potentially hazardous situation, such as serious injury
or death. Also, it will void the warranty.
• The National Fuel Gas Code NFPA 54 / ANSI Z224.1
• National Electric Code ANSI/NEPA 70
• All applicable local, state, national and provincial
codes, regulations and laws.
Proper care is your responsibility. Carefully read and
understand the Operating Information in this manual
before operating the Manufacturer Boiler.
Be aware of the location of the gas shut-off valve
and operation method. Close the gas shut-off valve
immediately if the appliance is subjected to re,
overheating, ood, physical damage, or any other
Page 15
damaging condition that might affect the operation
of the unit. Boiler must be checked by a qualied
technician before resuming operation.
DO NOT use this Boiler if any part has been under
water. Immediately call a qualied technician for
inspecting the Boiler and replacing any part of the
control system and gas control which have been
under water.
Do not power up the unit until the gas and water
supply valves are fully opened. Make sure that the
fresh air intake port and exhaust gas port are opened
and functional.
DO NOT attempt to install, repair, or service this
Boiler by yourself.
Do not change any part of the Boiler.
Contact a qualied technician if the Boiler needs
repair or maintenance.
Ask your gas supplier for a list of qualied service
providers.
DO NOT use spray paint, hair spray, or any other
ammable spray near Boiler or near the exterior fresh
air inlet port. DO NOT place any items in or around
the exterior exhaust gas outlet port and/or fresh air
inlet port. These could restrict or block the ow in or
out of the vent system.
“Caution: While repairing control, all wires are
labeled. You must connect the wires in accordance
with the instruction.
Wiring errors can cause improper and dangerous
operation.
“Verify proper operation after servicing operation”
This consists of the gas ignition system components
which are protected from water (dripping, spraying, rain,
etc.) during operation and service (circulator replacement,
condensate trap, control replacement, etc.).
After installing the heater, safety devices must be
tested.
This boiler is equipped with a blocked vent shutoff
system.
If the error code ‘41’ occurs, follow the instructions
below.
- First, turn off the manual gas valve.
- Make sure that there is no foreign object in the vent
passage or rodent screen.
- If you do not nd any problem, do the following.
- Turn off the error state by pressing the power button
of Control Display.
- If the error occurs repeatedly, call your service
technician or gas supplier.
Page 16
3.2 Safety Precautions and Proper Use
Before Operation
1. Check the Gas Type (NG/LP)
When using or moving the unit for the rst time, check
if gas type matches with the gas type of the Boiler.
Check whether the gas type which is supplied is NG
(Natural Gas) or LP (Propane) and also check the
Boiler gas type.
The gas type is indicated on the rating plate on side of
the Boiler.
2. Check the Power (120V 60Hz)
Check that the appliance is connected properly.
3. Check the Cold Water
Inlet valve
Please keep the
appliance water
inlet valve open
at all times. The
appliance will not ignite
when insufcient water
or no water is in the
heating pipes. (valve:
always open position)
open
When in Operation
1. Caution for Gas leak
Frequently check for a gas leak at the gas connection
portion with soapy water.
Steps to take if you have a Gas leak.
1. Shut down the boiler as soon as gas fumes are
detected.
2. Close the intermediate gas valve.
3. Open windows for ventilation.
4. Call a qualied service technician for immediate
repair.
2. Caution for Ventilation
Make sure that there is sufcient inow and outow of air
ventilation while using the unit.
If the ventilation is improper, combustion quality may
deteriorate inside the appliance and cause shortened life
of the appliance.
3. Burn Warning
Be careful not to burn yourself on the ue or pipes. They
become extremely hot during operation.
CAUTION
4. Check the Gas Valve
Check that the manual gas shut-off valve
that supplies the FT is opened.
5. Check the area around the appliance and remove
any combustible or ammable materials. Remove
laundry or any other items that are on or near the
boiler or vent pipe.
Carbon monoxide poisoning
If vent pipe fumes enter the room, it could cause
poisoning by carbon monoxide gas. Check that the
vent pipes are properly connected. Open windows
for ventilation. Call a qualied service technician for
immediate repair.
Gas leakage test.
Gas supply line must be inspected regularly.
WARNING
Do not use the appliance for any other purpose other
than for residential hydronic heating.
Do not store combustibles or ammable material such as
gasoline near the appliance.
Do not store other items on or near this boiler.
Do not store combustible (ammable) materials such as
papers.
Do not hang clothes on the vent pipe. This may start a
re.
Do not shut off the Boiler.
When you leave home for a long time, do not shut off
Boiler. The Boiler has a freeze protection function. The
ceramic heater is installed inside of the heater’s internal
pipe to protect the heater from freezing.
Do not wipe the appliance or Control Display
with wet cloth. Electric shock may occur, or internal
parts may fail due to the exposure to moisture.
Do not disassemble the Boiler.
If repair is required, call your local qualied technician.
The FT Series Heating Only, Boiler
18
46
3
8
3
8
24
60
12
30
SECTION 4 Installation
Page 17
NOTE: For Cascading Installations, please refer
to document 1349 ‘Cascading the FT Series
Boiler’, available online.
4.1 Location and Clearances
The FT must be mounted to a suitable wall by a
qualied heating contractor under the guidelines of a
boiler. The wall may be of concrete or wood. Suitable
fasteners for concrete or wood must be used. Failure to
wall mount this boiler using correct fasteners will affect
the performance and life expectancy of the boiler and
will void the warranty.
WARNING
Installations must comply with
• All the local, state, provincial, and national codes,
laws, regulations and ordinances.
• National Fuel Gas Code, ANSI Z223.1 – The latest
version.
• National Electrical Code.
• A National Standard of Canada CAN/CSA-B149.1
Check before placing the Boiler
• Always check the connected components which are
near to the heater. The components are below.
Water piping position / Venting adapter / Gas supply
piping / Electrical power / Condensate drain hose.
• Inspect area around Boiler. Remove any combustible
materials, gasoline and other ammable liquids.
Failure to keep Boiler area clear and free of
combustible materials, gasoline and other ammable
liquids and vapors can result in severe personal
injury, death or substantial property damage.
• The Boiler which has gas control system
components must be protected from any possible
danger during operation and service.
• If new Boiler replaces an existing appliance, check
and correct system problems, for example:
- Do not install if: System leaks causing oxygen
corrosion or heat exchanger cracks from hard water
deposits.
Provide clearances
• If the heater was installed in a narrow space
or corner, please ensure that there is sufcient
space for service and maintenance access. For
regular maintenance, gas and water lines must be
accessible.
The boiler must be installed on a wall that can bear its weight.
Minimum clearances to Combustibles.
For installation from
Non-Combustibles and Combustibles
Suggested Service
Clearance
TOP of appliance 18 in (46 cm) 18 in (46 cm)
BACK of appliance 0 in (0 cm) 0 in (0 cm)
FRONT of appliance 24 in (60 cm) 40 in (101 cm)
SIDE of appliance 3 in (7 cm) 8 in (20 cm)
BOTTOM of appliance 12 in (30 cm) 24 in (61 cm)
Table 1. Minimum Clearances
WARNING
CLEARANCES FOR SERVICE ACCESS
• If you do not provide the minimum clearances
shown, it might not be possible to service the
boiler without removing it from the space.
• Space must be provided with combustion /
ventilation air openings correctly sized for
all other appliances located in the same
space as the boiler. The boiler cover must be
securely fastened to prevent it from drawing
air from the boiler room. This is particularly
important if the boiler is in a room with other
appliances. Failure to comply with the above
warnings could result in substantial property
damage, severe personal injury, or death.
to Combustibles and for Service.
Page 18
4.2 Wall Mount Bracket
4.2.2 The installation height and location
for your FT depends on your installation scenario. With all
clearances considered, and given adequate positioning for
air supply and venting, you will need to determine the best
position to mount the Wall Mount Bracket. The wall must
be concrete, wood, or plywood over studs, and must be
strong enough to hold the boiler!
• Start by familiarizing yourself to how the
included Wall Mount Bracket hooks underneath
the two Hangers that are attached to the back of
the boiler. The ‘hooks’ of the Wall Mount Bracket will
be 3” from the Top of the boiler once the boiler is hung.
• Position the Wall Mount Bracket at the location that it will go,
being sure that it is level, and then drill 4 holes (0.47”dia)
with a 1/2” drill bit, into the wall through the Bracket.
• If mounting to a concrete wall, then use the concrete
anchors. If onto wood or 5/8” (16 mm) plywood, then use
the wood screws. Do not hang the FT onto sheetrock unless
it is possible to fasten directly
into the structural studs. If the
included anchors do not suit
your installation, you must use
‘Field Supplied’ anchors that
are appropriate for the wall’s
construction.
Bolts (4)
Anchors
(4)
Wall Mount
Bracket
3" to Top
of Unit
*
Concrete,
Wood,
or 5/8" Plywood
Wall Mount
Bracket
Hangers (2)
(fastened to the back of unit)
4.2.1 Hang the Boiler
• Lift the boiler up, align the Hangers on the back
of the boiler with the hooks on the Wall Mount
Bracket, and hang the boiler onto the Wall Mount
Bracket. Do a visual inspection to make sure that
the boiler is hanging properly onto the hooks of
the Wall Mount Bracket.
• Fasten the bottom of the boiler to the wall using
2 suitable wall anchors (eld supplied).
The FT Series Heating Only, Boiler
4.3 Combustion Air
Page 19
FT boilers must have provisions for combustion
and ventilation air in accordance with the applicable
requirements for Combustion Air Supply and Ventilation
in the National Fuel Gas Code, ANSI Z223 1; or in
Canada, the Natural Gas and Propane Installation Code,
CSA B149.1. All applicable provisions of local building
codes must also be adhered to.
A FT unit can take combustion air from the space
in which it is installed, or the combustion air can be
ducted directly to the unit. Ventilation air must be
provided in either case.
4.3.1 Combustion Air from Room
In the United States, the most common requirements
specify that the space shall communicate with the
outdoors in accordance with method 1 or 2, which follow.
Where ducts are used, they shall be of the same cross-
sectional area as the free area of the openings to which
they connect.
Method 1: Two permanent openings, one commencing
within 12” (300mm) of the top and one commencing
within 12” (300mm) of the bottom, of the enclosure
shall be provided. The openings shall communicate
directly, or by ducts, with the outdoors or spaces
that freely communicate with the outdoors. When
directly communicating with the outdoors, or when
communicating to the outdoors through vertical ducts,
each opening shall have a minimum free area of 1
square inch per 4000 Btu/hr (550 square mm/kW) of
total input rating of all equipment in the enclosure. When
communicating to the outdoors through horizontal ducts,
each opening shall have a minimum free area of not
less than 1 square inch per 2000 Btu/hr (1100 square
mm/kW) of total input rating of all equipment in the
enclosure.
Method 2: One permanent opening, commencing
within 12” (300mm) of the top of the enclosure, shall
be permitted. The opening shall directly communicate
with the outdoors or shall communicate through a
vertical or horizontal duct to the outdoors or spaces
that directly communicate with the outdoors and shall
have a minimum free area of 1 square inch per 3000
Btu/hr (734 square mm/kW) of the total input rating of
all equipment located in the enclosure. This opening
must not be less than the sum of the areas of all vent
connectors in the conned space.
Other methods of introducing combustion and
ventilation air are acceptable, providing they conform to
the requirements in the applicable codes listed above.
In Canada, consult local building and safety codes or, in
absence of such requirements, follow CAN/CGA B149.1
4.3.2 Ducted Combustion Air
The combustion air can be taken through the wall, or
through the roof. When taken from the wall, it must be
taken from out-of-doors by means of the Manufacturer
horizontal wall terminal. When taken from the roof, a
eld-supplied rain cap or an elbow arrangement must
be used to prevent entry of rain water.
Use ABS, PVC, CPVC, polypropylene, or galvanized
pipe for the combustion air intake. Route the intake
to the boiler as directly as possible. Seal all joints.
Provide adequate hangers. The unit must not support
the weight of the combustion air intake pipe. Maximum
linear pipe length allowed is shown in Table 5. Subtract
5 allowable linear ft. (1.5m) for every elbow used.
The connection for the intake air pipe is at the top of
the unit.
In addition to air needed for combustion, air shall also
be supplied for ventilation, including air required for
comfort and proper working conditions for personnel.
COMBUSTION AIR INSTALLATION STANDARDS
MATERIAL UNITED STATES CANADA
ABS ANSI/ASTM D1527
PVC, sch 40 ANSI/ASTM D1785 or D2665 Air pipe material must be chosen
CPVC, sch 40 ANSI/ASTM F441 CPVC, sch 40, ANSI/ASTM, Polypropylene
Polypropylene UL1738, ULC S636. based upon the intended application of the boiler.
Single wall galv. steel 26 gauge
Table 2. Required Combustion Air Pipe Material.
Page 20
The instructions for the installation of the venting
system shall specify that the horizontal portions of
the venting system shall be supported to prevent
sagging; the methods of and intervals for support
shall be specied. These instructions shall also
specify that the venting system:
Category I, II and IV boilers must be installed so
that horizontal sections have a slope of at least ¼
inch per foot (21 mm/m) to prevent accumulation of
condensate; and
For Category II and IV boilers, where necessary,
have means provided for drainage of condensate.
NOTICE
CAUTION
The FT is standard as a Natural Gas Boiler and
must be converted if propane is the desired gas, unless
specically manufactured for propane.
Adequate drainage
• The appliance should be installed not to damage
the adjacent area. If such locations cannot be
avoided, it is recommended that a suitable drain
pan, adequately drained, be installed under the
appliance. The pan must not block combustion air
ow.
Les instructions d'installation du système
d'évacuation doivent préciser que les sections
horizontales doivent être supportées pour prévenir
le échissement. Les méthodes et les intervalles
de support doivent être spéciés. Les instructions
doivent aussi indiquer les renseignements suivants:
les chaudières de catégories I, II et IV doivent
présenter des tronçons horizontaux dont la pente
montante est d'au moins ¼ po par pied (21 mm/m)
entre la chaudière et l'évent; les chaudières de
catégories II et IV doivent être installées de façon à
empêcher l'accumulation de condensat;
et si nécessaire, les chaudières de catégories II et IV
doivent être pourvues de dispositifs d'évacuation du
condensat.
AVIS
Connecting the Water Supply
• To conserve water and energy, insulate all water
piping—especially the hot and recirculation water
lines. Never cover the drain or pressure relief valve.
Having a backow preventer in the cold water
supply line will prevent thermal expansion
backow. Contact the water supplier or local
plumbing inspector for information about how to
control this situation.
If overheating occurs or the gas supply fails to shut
off, turn off the manual gas valve.
This installation must conform with below section
• “Air for Combustion and Ventilation” of the
National Fuel Gas Code, ANSI Z224.1/NFPA 54,
or Sections 8.2, 8.3 or 8.4 of Natural Gas and
Propane Installation Code, CAN/CSA B149.1, or
applicable provisions of the local building codes.
The FT Series Heating Only, Boiler
4.4 Venting, Exhaust
Page 21
DO NOT COMMON VENT FT UNITS.
never permitted to share a vent with
Category I appliances.
For Cascading Installations, please refer to
document 1349 ‘Cascading the FT Series Boiler’,
The ue temperature of the FT changes dramatically
with changes in operating water temperature.
Therefore, it is necessary to assess the application
of the boiler to determine the required certied vent
class. If the FT is installed in an application where
the ambient temperature is elevated, and/or installed
in a closet/alcove, CPVC, polypropylene, or stainless
steel material is required. If the system temperatures
are unknown at the time of installation, stainless,
polypropylene or CPVC material is recommended.
The FT is a Category IV appliance and may be installed
with PVC, CPVC or polypropylene that complies with
ULC-S636, ANSI/ASTM D1785 F441 (see Table 3) or
a stainless steel venting system that complies with UL
1738 Standard and ULC S636.
Failure to use the appropriate vent material, installation
techniques, glues/sealants could lead to vent failure
causing property damage, personal injury or death.
All venting must be installed according to this manual
and any other applicable local codes, including but not
limited to, ANSI Z224.1/NFPA 54, CAN/CSA B149.1
and ULC-S636. Failure to follow this manual and
applicable codes may lead to property damage, severe
injury, or death.
NOTICE
NOTICE
available online.
WARNING
WARNING
FT units are
NE PAS ÉVENT COMMUNE FT UNITÉS.
unités ne sont jamais autorisés à partager un
évent Catégorie I avec les appareils.
AVIS
FT
___________________________________________
Use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel® (polyphenolsulfone) in non-metallic
venting systems is prohibited and covering non-
metallic vent pipe and ttings with thermal insulation is
prohibited.
_________________________________________
INSTALLATIONS IN CANADA require the use of
venting material certied to ULCS636. All Gas
vents connected to the FT, plastic, stainless
steel or otherwise must be certied to this ULC
standard. Appropriate selection of vent material is
very important for proper performance and safe
operation of the FT.
The ue temperature of the FT changes
dramatically with changes in operating water
temperature. Therefore, it is necessary to assess
the application of the boiler to determine the
required certied vent class. If the FT is installed in
an application where the outlet water temperature
exceeds 145°F, and/or installed in a closet, class
IIB or higher vent material is required. If the
system temperatures are unknown at the time of
installation, class IIB or higher venting material is
recommended.
IN CANADA all venting used must meet the
following requirements:
1. ULC-S636 certied and marked
2. The rst 3 feet of venting must be accessible
for visual inspection.
3. All components used in the vent system must
WARNING
VENTING INSTALLATION STANDARDS
MATERIAL UNITED STATES CANADA
Stainless Steel UL 1738 Venting must be ULC-S636 certied for use as
PVC, sch 40 ANSI/ASTM D1785 venting material. The venting material must be chosen
CPVC, sch 40 ANSI/ASTM F441 based upon the intended application of the boiler.
Polypropylene UL1738 or ULC-S636
Table 3. Required Exhaust Vent Material.
Page 22
4.4 Venting, Exhaust (continued)
be from a certied manufacturer.
4 . Vent system components must not be mixed
with alternate manufacturers certied
components and/or unlisted components.
5 . The venting must be installed according
to the vent manufacturers installation
instructions.
The unit’s vent can terminate through the roof, or
through an outside wall.
Vent pipe must pitch upward, toward the vent
terminal, not less than 1/4” per foot, so that
condensate will run back to the FT to drain. Route
vent pipe to the heater as directly as possible. Seal
all joints and provide adequate hangers as required
in the venting system manufacturer’s Installation
Instructions. Horizontal portions of the venting
system must be supported to prevent sagging and
may not have any low sections that could trap
condensate. The unit must not support the weight of
the vent pipe.
WARNING
Failure to vent this Boiler in accordance with
these instructions could cause a re, resulting
in severe property damage, personal injury or
death.
Do not interchange vent systems or materials
unless it is specied.
The use of thermal insulation covering pipe and
ttings is prohibited.
Do not apply an electric damper, draft hood or
vent damper with this Boiler.
Do not locate vent termination where exposed
to prevailing winds. Moisture and ice may fall
on surface around vent termination. To prevent
deterioration, surface must be in good repair
(sealed, painted, etc.).
4.5 General Location Guideline
1. Vent system installation must be in accordance
with Local codes or, in the absence of local codes,
the National Fuel Gas Code, ANSI Z224.1 /NFPA
54 and/or CSA B149.1, Natural Gas and Propane
Installation Code.
2. The Boiler is designed to be installed as a Direct
Vent (sealed combustion) type. The air for
combustion must be supplied directly from the
outside to the burner. Also, the ue gases must be
vented directly to the outdoors (through wall or roof).
3. Do not install venting system components on the
exterior of building except as specically required by
these instructions
- Vent terminals must be at least 1 foot from any door,
window, or gravity inlet into the building.
- Maintain the correct clearance and orientation
between the vent and air intake terminals.
The vent and air intake terminals must be at the
same height and their center lines must be spaced
apart 12˝ minimum.
- The bottom of the vent and air intake terminal must
be at least 12˝ above the normal snow line. In no
case should they be less than 12˝ above grade
level.
- Do not install the vent terminal directly over
windows or doors.
- Air intake terminal must not terminate in areas that
might contain combustion air contaminates, such
as near swimming pools.
- For sidewall venting, the minimum horizontal
distance between any adjacent individual Module
(Boiler) vent terminations is twelve (12) inches. It
is better to be far more than 12 inches for avoiding
frost damage to building surfaces where vent
terminations are placed.
- The minimum horizontal distance between any
adjacent individual module (boiler) roof vent
endpiece is one (1) foot.
The FT Series Heating Only, Boiler
4.6 Locations for Vent Pipe Terminator
4.6.1 Direct Venting Clearances
Page 23
U.S. Installations (see note 1) Canadian Installations (see note 2)
A= Clearance above grade, veranda, porch, 12 inches (30 cm) 12 inches (30 cm)
deck, or balcony See note 6 See note 6
B= Clearance to window or door that may be Direct vent only: 12 inches (30cm); 36 inches (91 cm)
opened Other than Direct vent: 4 ft (1.2m) below or to NT 80 only - 12 inches (30 cm)
side of opening; 1 ft (30cm) above opening
C= Clearance to permanently closed window See note 4 See note 5
D= Vertical clearance to ventilated soft located
above the terminal within a horizontal See note 4 See note 5
distance of 2 feet (61cm) from the center
line of the terminal
E= Clearance to unventilated soft See note 4 See note 5
F= Clearance to outside corner See note 4 See note 5
G= Clearance to inside corner See note 4 See note 5
H= Clearance to each side of center line 3 feet (91 cm) within a height 15 feet
extended above meter/regulator assembly See note 4 above the meter/regulator assembly
I= Clearance to service regulator vent outlet See note 4 3 feet (91 cm)
J= Clearance to nonmechanical air supply Direct vent only: 12” (30cm) 80-285; 36” (91cm)
inlet to building or the combustion air inlet 399-850. Other than Direct vent: 4 ft (1.2m) below 36 inches (91 cm)
to any other appliance or to side of opening; 1 ft (30cm) above opening NT 80 only - 12 inches (30 cm)
K= Clearance to a mechanical air supply inlet 3 feet (91 cm) above if within 10 feet (3 m) 6 feet (1.83 m)
horizontally
L= Clearance above paved sidewalk or paved Vent termination not allowed in this location 7 ft (2.1 m)
driveway located on public property for category IV appliances. See note 5
M= Clearance under veranda, porch, deck, See note 4 12 inches (30 cm) (see note 3)
or balcony
Notes:
1. In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
2. In accordance with the current CAN/CSA-B149.1 Installation Codes.
3. Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
4. For clearances not specied in ANSI Z223.1 / NFPA 54, clearance is in accordance with local installation codes and the requirements of the gas supplier.
5. For clearances not specied in CAN/CSA-B149, clearance is in accordance with local installation codes and the requirements of the gas supplier.
6. IMPORTANT: Terminal must be placed such that it remains a minimum 12” above expected snow line. Local codes may have more
specic requirements, and must be consulted.
Table 4. Direct Vent Clearances
Page 24
4.6.2 Venting Requirements in the
Commonwealth of Massachusetts
In Massachusetts the following items are required if
the side-wall exhaust vent termination is less than
seven (7) feet above nished grade in the area
of the venting, including but not limited to decks
and porches. From Massachusetts Rules and
regulations 248 CMR 5.08
1. Installation of Carbon Monoxide Detectors
At the time of installation of the side wall
vented gas fueled appliance, the installing plumber
or gastter shall observe that a hard-wired carbon
monoxide detector with an alarm battery back-up is
installed on the oor level where the gas appliance
is to be installed. In addition, the installing plumber
or gastter shall observe that a battery operated or
hard-wired carbon monoxide detector with an alarm
is installed on each additional level of the dwelling,
building or structure served by the side-wall
horizontally vented gas fueled equipment. It shall
be the responsibility of the property owner to secure
the services of qualied licensed professionals
for installation of hard-wired carbon monoxide
detectors.
a. In the event that the side-wall horizontally
vented gas fueled equipment is installed in a crawl
space or an attic, the hard-wired carbon monoxide
with alarm and battery back-up may be installed on
the next adjacent oor level.
b. In the event that the requirements of the
subdivision cannot be met at the time of completion
of installation, the owner shall have a period of thirty
(30) days to comply with the above requirements,
provided, however, that during said thirty (30) day
period, a battery operated carbon monoxide detector
with an alarm be installed.
2. Approved Carbon Monoxide Detectors
Each carbon monoxide detector shall comply
with NFPA 720 and be ANSI/UL 2034 listed and IAS
certied.
3. Signage. A metal or plastic identication plate
shall be permanently mounted to the exterior of
the building at a minimum height of eight (8) feet
above grade directly in line with the exhaust vent
terminal for horizontally vented gas fueled heating
appliance or equipment. The sign shall read, in
print no less than one-half (1/2) inch in size: “GAS
VENT DIRECTLY BELOW, KEEP CLEAR OF ALL
OBSTRUCTIONS”.
4. Inspection The state or local gas inspector of
the side-wall horizontally vented gas fueled appliance
shall not approve the installation unless, upon
inspection, the inspector observes carbon monoxide
detectors and signage installed in accordance with the
provisions of 248 CMR 5.08(2)(a) 1-4.
The FT Series Heating Only, Boiler
Page 25
DO NOT COMMON VENT FT UNITS.
NOTICE
FT units
are never permitted to share a vent with
Category I appliances.
Common Vent Test
NOTE: This section does not describe a method for
common venting FT units. It describes what must
be done when an existing unit is removed from a
common vent system.
At the time of removal of an existing boiler, the following steps
shall be followed with each appliance remaining connected to
the common venting system placed in operation, while the other
appliances remaining connected to the common venting system
are not in operation.
1. Seal any Not Used openings in the common venting system.
2. Visually inspect the venting system for proper size and
horizontal pitch and determine there is no blockage or
restriction, leakage, corrosion and other deciencies which
could cause an unsafe condition.
3. Insofar as is practical, close all building doors and windows
and all doors between the space in which the appliances
remaining connected to the common venting system are
located and other spaces of the building. Turn on clothes
dryers and any appliance not connected to the common
venting system. Turn on any exhaust fans, such as range
hoods and bathroom exhausts, so they will operate at
maximum speed.
4. Place in operation the appliance being inspected. Follow the
lighting instructions. Adjust thermostat so the appliance will
operate continuously.
5. Operate the main burner for 5 minutes then, determine if the
cut-draw overows to the discharge opening. Use the ame
of a match or a candle or the smoke of a cigarette, a cigar or
a pipe
6. Once it has been determined, according to the method
indicated above, that each device connected to the drainage
system is placed in the open air in an adequate manner.
Install the doors and windows, fans, the registers of chimneys
and gas appliances to their original position
7. Any malfunction of the venting system should be corrected so
that the installation conforms to the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 and (or) the installation codes CAN/
CSA-B149.1. If the size of a section of the evacuation system
must be changed, the system should be modied to comply
with the minimum values of the relevant tables of appendix F
of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and
(or) the installation codes CAN/CSA-B149.1
NOTICE
NE PAS ÉVENT COMMUNE FT UNITÉS.
AVIS
FT unités
ne sont jamais autorisés à partager un évent
Catégorie I avec les appareils.
Au moment du retrait d'une chaudière existante, les mesures
suivantes doivent être prises pour chaque appareil toujours raccordé
au système d'évacuation commun et qui fonctionne alors que
d'autres appareils toujours raccordés au système d'évacuation ne
fonctionnent pas:
1. Sceller toutes les ouvertures non utilisées du système
d'évacuation.
2. Inspecter de façon visuelle le système d'évacuation pour
déterminer la grosseur et l'inclinaison horizontale qui conviennent
et s'assurer que le système est exempt d'obstruction,
d'étranglement, de fuite, de corrosion et autres défaillances qui
pourraient présenter des risques.
3. Dans la mesure du possible, fermer toutes les portes et les
fenêtres du bâtiment et toutes les portes entre l'espace où les
appareils toujours raccordés au système d'évacuation sont
installés et les autres espaces du bâtiment. Mettre en marche
les sécheuses, tous les appareils non raccordés au système
d'évacuation commun et tous les ventilateurs d'extraction comme
les hottes de cuisinière et les ventilateurs des salles de bain.
S'assurer que ces ventilateurs fonctionnent à la vitesse maximale.
Ne pas faire fonctionner les ventilateurs d'été. Fermer les registres
des cheminées.
4. Mettre l'appareil inspecté en marche. Suivre les instructions
d'allumage. Régler le thermostat de façon que l'appareil fonctionne
de façon continue.
5. Faire fonctionner le brûleur principal pendant 5 min ensuite,
déterminer si le coupe-tirage déborde à l'ouverture de décharge.
Utiliser la amme d'une allumette ou d'une chandelle ou la fumée
d'une cigarette, d'un cigare ou d'une pipe.
6. Une fois qu'il a été déterminé, selon la méthode indiquée ci-
dessus, que chaque appareil raccordé au système d'évacuation
est mis à l'air libre de façon adéquate. Remettre les portes et
les fenêtres, les ventilateurs, les registres de cheminées et les
appareils au gaz à leur position originale.
7. Tout mauvais fonctionnement du système d'évacuation commun
devrait être corrigé de façon que l'installation soit conforme au
National Fuel Gas Code, ANSI Z223.1/NFPA 54 et (ou) aux codes
d'installation CAN/CSA-B149.1. Si la grosseur d'une section
du système d'évacuation doit être modiée, le système devrait
être modié pour respecter les valeurs minimales des tableaux
pertinents de l'appendice F du National Fuel Gas Code, ANSI
Z223.1/NFPA 54 et (ou) les codes d'installation CAN/CSA-B149.1
AVIS
Page 26
4.7 Air Supply and Vent Connections
4.7.1 Vent / Air Pipe Lengths
Boiler model
FTHW (all sizes)
Table 5. Maximum Vent / Air Pipe Lengths for either 3” or 2 “ Pipes
NOTE: For each elbow, reduce the maximum allowable length
• 5 feet (1.5M) for each 3-inch 90-degree elbow
• 2.5 feet (0.75M) for each 3-inch 45-degree elbow
• 8 feet (2.4M) for each 2-inch 90-degree elbow
• 4 feet (1.2M) for each 2-inch 45-degree elbow
• Max 6 elbows for 3” vent, Max 4 elbows for 2” vent
NOTE: The FT is factory set to operate
using 3” piping for Intake and Vent. For
3” Pipe vent, the default setting for DIP
4 is ON. If your installation is using a 2”
vent pipe, DIP Switch 4 must be in the
OFF position.
Refer to Section 4:18
3˝ Combustion Air / Vent Pipe 2˝ Combustion Air / Vent Pipe
Max
100´ (30M)
50´
Propane models are limited to 25
*
equivalent feet of 2” vent
WARNING
• Use of cellular core CPVC, or Radel (polyphenolsulfone)
in venting systems is prohibited.
• Covering non-metallic vent pipe and ttings with thermal
insulation is prohibited.
• Do not obstruct the ow of combustion and ventilated air.
Max
(15M*)
*
4.7.2 Direct Venting
The FT boiler can use 3˝ or 2˝ diameter exhaust
and 3˝ or 2˝ diameter intake air ducts. To ensure the
draw of air directly from and exhaust of air directly
to the outside of the building, create an airtight seal
from the boiler collar to the vent termination.
(For installations in Canada) eld-supplied plastic
vent piping must comply with CAN/CSA B149.1
(latest edition) and be certied by the Standard
For Type BH Gas Venting Systems, ULC-S636.
Components of this listed system must not be
interchanged with other vent systems or unlisted
pipes or ttings. All plastic components and
specied primers and glues of the certied vent
system must be from a single system manufacturer
and must not be intermixed with another system
manufacturer’s parts.
Tightening — Boiler Collar (Socket) to Vent
Pipe & Inlet Pipe
- Clean and dry your selected PVC, CPVC vent
pipe and Manufacturer Boiler collar (socket).
- You can select to the size of vent pipe(2˝ & 3˝),
according to the installation conditions.
- Push the pipe into the collar (socket) until it
touches the bottom of the socket tting.
- For 2” installations, install a eld supplied 3” to
2” adaptor. Adaptor must be installed in vertical
section of piping only.
3” pipe
2” pipe connected, using an adapter
3” to 2”
adapter
is NOT
included.
The FT Series Heating Only, Boiler
4.7.3 Indoor Combustion Air
Read and Follow Sections 4.3 Guidelines First.
1. Insert the termination end cap into the intake air duct.
2. Provide two openings to allow for circulation of
combustion air as specied by ANSI Z224.1/NFPA 54.
In Canada refer to CAN/CSA B-149.1
NOTE: The FT needs fresh air for safe operation and must
be installed so there are provisions for adequate
combustion and ventilation air.
Model FTHW80 FTHW100 FTHW120 FTHW140 FTHW199
Maximum Input (BTU/H) 80,000 100,000 120,000 140,000 199,000
Page 27
Indoor make up air is provided,
a minimum free area of 1 in2
per 1,000 BTU/H
2
80 in
13 1/4˝
(W) x 13 1/4˝ (H)
2
100 in
13 1/4˝
(W) x 13 1/4˝ (H)
2
120 in
13 1/4˝
(W) x 13 1/4˝ (H)
2
140 in
13 1/4˝
(W) x 13 1/4˝ (H)
2
199 in
13 1/4˝
(W) x 13 1/4˝ (H)
Table 6. Adequate Free Area
4.8 Vent / Air Pipe Termination
All Terminations:
• After connecting terminals, install vent screens on both the vent and air inlet.
Two 3” vent screens are included with each unit. Additional replacement screens are available for purchase.
2” Vent Screen P/N - FT1508
3” Vent Screen P/N - FT1730
Vertical Vent Termination
• Direct Vent - Vertical Terminations
with Sloped Roof
Vent Screens
are required
Page 28
SIDE VIEW
FRONT VIEW
Exhaust Screen
12” MIN
1” MIN
Exhaust
Combustion
Intake
Air Intake Screen
Exterior Wall
NOTE: Must be 12”
Minimum distance
above highest
anticipated snow level
or grade, whichever is
greater (TYP).
NOTE: The Exhaust must
be equal to or above the
Combustion Intake while at
a Minimum of 12” apart.
12” MIN
Apart
Exhaust
90o Elbow
Exhaust
Screen
Exhaust
Exhaust
12” MIN
1” MIN
Sill
Combustion
Intake
Combustion
Intake
SIDE VIEWFRONT VIEW
Exterior Wall
NOTE: Must be 12”
Minimum distance
above highest
anticipated snow level
or grade, whichever is
greater (TYP).
12” MIN
12”
MIN
Exhaust Screen
Exhaust
12” MIN
12” MIN
1” MIN
Sill
Combustion
Intake
Combustion
Intake
SIDE VIEWFRONT VIEW
Air Intake Screen
90o Elbow
Exterior Wall
12”
NOTE: Must be 12”
Minimum distance
above highest
anticipated snow level
or grade, whichever is
greater (TYP).
Exhaust
MIN
Horizontal Vent Termination
• Direct Vent - Sidewall Termination
A
4.8 Vent / Air Pipe Termination (continued)
Vent Screens are required
B
C
Vent Screens
are required
Vent
Screens are
required
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