User’s Manual Document 1488
H2412500-
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.
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.
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 ni
d’autres vapeurs ou liquides inammables dans
le voisinage 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 dansle bâtiment où vous êtes.
• 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.
User’s Manual
Wall-Mounted, Modulating
Gas, Condensing, Combination Boiler
Model FTCW
140,000 BTU/h
199,000 BTU/h
• Natural Gas (NG) - Factory Conguration
• Propane Gas (LP) - Field-Convertible
THE
FT
SERIES
Page 2
4 SCREWS
CONTROL PANEL
AND DISPLAY
CENTRAL HEAT
PRESSURE GAUGE
MODEL NUMBER
1. Familiarizing yourself to
........................................CONTENTS Pgs
1. Familiarizing yourself to the wall mounted FT Series Combi .........2
2. Caring For Your FT Series Combi .................................................2
3. Start Up and Shut Down. .............................................................. 4
4. Control Setup and Operation ....................................................4-10
The FT Series Combi is a wall
mounted, condensing and fully
modulating, residential boiler and
water heater.
This User’s Manual will guide you into the
basics of operating your FT Series Combi.
Please reference the
Installation and Operation Manual for
complete details. Doc# 1487
2. Caring For Your FT
Your FT Series Combi will require very little
maintenance. However, as with any ne appliance
there are certain steps that should be taken to ensure
continuing optimum performance.
2.1 General Care
Keep the area around the FT Series Combi clean
and free from combustible materials, gasoline and
other ammable liquids and vapors.
The FT Series Combi must be completely
isolated and protected from any source of
corrosive chemical fumes such as trichlorethylene,
perchlorethylene, chlorine, etc.
Keep bottom and top openings on the boiler free
for proper ventilation of interior components.
Do not obstruct or block a free ow of air to the
boiler to ensure proper ventilation.
If desired, clean the jacket surfaces with a
damp cloth and mild detergent. Do not use ammable
cleaning materials.
If sidewall vented, keep the vent terminal clear
of obstructions — do not allow snow to cover the vent
terminal. Clean the intake screen often, and then
develop an appropriate maintenance schedule.
2.2 Annual Inspection of Flue and Vents
Visually inspect the vent pipe once a year. Should
any deterioration exist, have the aected parts replaced
by a qualied service person.
2.3 In the Event of a Power Failure
The FT Series Combi can not be operated during
an electrical power outage. If there is an extended
power outage with danger from freezing, then the FT
Series Combi (and all other water systems) should be
drained completely. When draining the boiler, turn o
main electrical disconnect switch. When placing back in
service, refer to Section 3 of this Manual for instruction.
All draining and lling must only be done by a qualied
service person.
2.4 Full Service Every Year
In addition to the annual visual inspections, a
qualied service agency should conduct a detailed
inspection of all ue product carrying areas of the FT
Series Combi and its venting system.
THE
FT
SERIES
User’s Manual - The FT Series Wall Mounted, Combination Boiler
Page 3
CH Supply
CH Return
CH Supply
CH Return
Combustion Air
Vent
CH Supply
CH Return
Combustion Air Vent
FTCW140
FTCW199
# Name of Component
1 Air Vent (air eliminator)
2 Pressure Relief Valve
3 Air Intake Collar
4 Air Gas Mixing Pipe
5 Gas Valve
6 DHW Water Tank
7 Main PCB
8 Manual Power Switch (ON / OFF)
9 Boiler Pump
10 'CH' Supply Connection
11 'CH' Return Connection
12 CH Pressure Gauge
13 DHW Outlet Connection
14 Gas Inlet Connection
15 DHW Inlet Connection (lter and ow restrictor)
16 Condensate Connection
# Name of Component
17 Condensate Trap
18 Blocked Condensate Switch
19 Mixing Valve
20 Terminal Block
21 Control Panel and Display
22 Heat Exchanger
23 Ignition Transformer
24 Flame Detecting Sensor
25 Burner Case
26 BLDC Fan (Blower)
27 Vent Pipe
28 Air Pressure Sensor
29 Vent Pipe Collar
30 Sight Glass
31 Low Water Cut O
32 Overheat Temperature Sensor
Page 4
3. Shut Down and Restart
3.1 To Start the FT Series Combi
If drained, please refer to the Install and Operating
Manual to ensure that the complete ‘Setup’
procedure has been followed before starting this
boiler. A complete ‘Setup’ must be performed by a
qualied service person.
3.2 Shutting Down the FT Series Combi
1. Turn o the main electrical disconnect switch.
2. Close all manual gas valves.
3. If freezing is anticipated, drain the FT Series
Combi and be sure to also protect building piping
from freezing. All water must be removed from
heat exchanger and condensate trap or else
damage from freezing may occur. Please refer to
the Install and Operating Manual.
This step to be performed by a qualied service person.
4. The Control Display and Operation
The FT Series Wall Mounted, Combination Boiler
Page 51
SECTION 5 Control Display and Operation
5.1 Control Dial and Buttons
• Temperature Speci cations
Operating ambient Temperature Range : -10 to 60°C.
Operating Relative Humidity up to: 90% at 40°C.
Shipping & Storage Temperature Range of : -20 to 80°C.
Buttons Function Method Function Method
A
Display
Power
Turns Control Display ON / OFF Press/Tap
B
Modes
Status Display Mode (With display power on) Press/Hold (5 Seconds)
Return to Menu (from
Status Display Mode)
Press/Tap
Installer Mode (WIth display power o ) Press/Hold (5 Seconds)
Return to o display o
mode (from installer mode)
Press/Tap
C
Hot
Water
DHW Set point LOW Range
95 - 120°F (35 - 49°C)
Press/Tap (To return home,
tap Scroll/Select)
DHW set point HIGH
Range 121-140°F (49.5-
60°C) (from DHW set
point LOW RANGE)
Press/Hold (5 Sec-
onds), (To return
home, tap Scroll/
Select)
D
Central
Heat
CH set point mode (boiler only)
Press/Tap (To return home,
tap Scroll/Select)
Toggle (°C/°F) (from CH
set point mode)
Press/Hold (5
Seconds)
E
Scroll /
Select
Turn to scroll (clockwise or counterclockwise),
Tap to select
Press/Tap
The Control Display has a Control Dial (E), 4 buttons (A, B, C, D), and a Liquid
Crystal Display (with 72 back-lit segments). This section of this manual gives
instruction on how to navigate into the many functions of the FT and to change
temperature set points, set system variables and controller parameters.
Status Light
(constant green
when operating
normally)
The Control Display
E
53page
B C
A D
User’s Manual - The FT Series Wall Mounted, Combination Boiler
Page 5
4. The Control Display and Operation
(continued)
Page 52
5.2 LCD Overview
CH mode Central Heat mode icon can be adjusted
Anti-freeze mode Anti-freeze mode icon
Storage Heating mode Stored Water Being Heated, can be adjusted
Lock mode Buttons-locked mode icon
Communication Communication icon
Summer mode Only DHW Mode, can be adjusted (warm weather shutdown)
Status and Installer mode The Status Mode or the Installer Mode is Active (all parameters)
Flame signal Flame Signal icon
Pump icon Water pump operation (CH or DHW) icon
Numeric Display Number and character display, to display all parameters
DHW mode Combination boiler Set Point, can be adjusted
Outside temp or 0-10 V mode Operating by outside temperature or 0-10V
Numeric Display
Domestic Hot Water Mode
Anti-Freeze
Mode
Storage
Heating
Lock Communicating
Status and
Installer
Modes
Flame
Signal
Pump
Outside
Temp Mode
or 0-10V
Summer
Mode
(warm
weather
shutdown)
CH
Central
Heat
The LCD will illuminate when a user action is detected (a button is pressed) and will turn
back o after 20 seconds.
* NOTE: The display will not allow changes when the lock mode is activated.
To exit the Lock mode, press the
button.
WARNING
Do no use this appliance if any part has been under
water. Immediately call a quali ed service technician
to inspect the appliance and to replace any part of
the control system and any gas control that may have
been under water.
Page 6
Operating Mode
The FT Series Wall Mounted, Combination Boiler
Page 53
5.3 Operating Mode
Operating Mode
After the Power is turned on, and/or the Control Display is turned on
, the Control Display
will go through a ‘Start Up’ checklist and brie y show a sequence of diagnostic codes before
entering into the ‘Operating Mode. It will then display the following information.
Indicate Example
Current Operating Temperature 110°F
Temperature sign Celsius or Fahrenheit letter °C or °F
Display and Controller are communicating
If ame detected
If pump is operating
Outdoor sensor or 0-10V
E
55page
56page
B C
A D
User’s Manual - The FT Series Wall Mounted, Combination Boiler
Page 7
DHW Set Point Change Modes
Page 54
5.4
Status Display Mode
Digital Display Status Display Parameter Description
O:ot Outdoor temperature Current Outdoor temperature
A: Li or A: GA Flow unit Current ow value(Li: L/m, GA: GPM)
b: It CH Return Water Temperature Current Return Water Sensor Temperature
C: Fr Fan rpm Current fan rpm value
d: Lc Lock mode Lock mode ON/OFF
E: oP OP temperature Current OP temperature
F: dH DHW temperature Current DHW temperature
H: Eh Exhaust temperature Current Exhaust temperature
I : St N/A Not Used (Default is 0)
J: oH Overheat temperature Current Overheat temperature
L: rt
1: PH
Burner
Operation
Time
Supply power
time
Supply power time x 100 hour
2: rh
Burner
operation time
Burner operation time x 1 hour
3: rH
Burner
operation time
Burner operation time x 1,000 hour
4: It Ignition cycles Ignition cycles x 10 times
5: IH Ignition cycles Ignition cycles x 10,000 times
P: Ou
Displays output condition for
internal primary pump and
three way valve.
- O
- On
1st Icon 2nd Icon 3rd Icon
Not Used
Internal CH
Pump
3 Way Valve
E
55page
56page
B C
A D
To view any of the above listed Status Parameters,
Press and Hold Button B to get into the Status Display Mode.
Rotate Dial E until you nd the Parameter that you wish to view. Tap Dial E to enter that Parameter.
Adjust to the setting that you require and then press (tap) Dial E to save and to Exit.
Page 8
The FT Series Wall Mounted, Combination Boiler
Page 55
5.5 DHW Set Point Change Mode
DHW Set Point Change Modes
The display shows the following
information when changing water heating
temperature set points.
* Default DHW set point is 120°F (49°C)
• DHW 95-120°F (35 - 49°C) LOW range (Default)
-To change LOW range, press the C Button. The DHW icon and current DHW LOW will ash (a ashing
value means it can be changed).
-Turn dial E clockwise to increase and counterclockwise to decrease until desired temperature is reached.
-Press dial E to save set point changes.
• DHW 121 - 140°F (49.5 - 60°C) HIGH range
-To change HIGH range, press and HOLD the C button for more than 5 seconds. The DHW icon and
current DHW HIGH will ash (a ashing value means it can be changed).
-Turn dial E clockwise to increase and counterclockwise to decrease until desired temperature is reached.
-Press dial E to save set point changes and to Exit.
Indicate Example
Current DHW set point temperature 120°F
Temperature sign Celsius or Fahrenheit letter °C or °F
If display is communicating with the main controller normally, the
communication icon will be indicated.
When DHW set point range is high : from 121°F (49.5°C) to 140°F (60.0°C) H . 140°F
When changing DHW set point, the DHW icon will ash S24
Changing between Celsius and Fahrenheit
When the button D
is pressed (for more
than 5 seconds), temperature unit will toggle
between °C and °F.
Scalding may occur within 5 seconds at a setting of 140°F (60°C). Water temperatures
over 125°F can cause severe burns, or death from scalding. Children, disabled,
and elderly are at highest risk of being scalded. Read all instructions before setting
temperature at appliance. Feel water before bathing or showering.
Manufacturer strongly recommends the use of an anti-scald mixing valve at
domestic hot water outlet (boiler location) to reduce potential for scalding.
Contact Manufacturer for recommended models. Check with local codes.
57page
E
E
B
B
C
C
A
A
D
D
57page
E
E
B
B
C
C
A
A
D
D
DANGER
User’s Manual - The FT Series Wall Mounted, Combination Boiler
Page 9
Page 56
To change CH Set point, press the D
button. The CH Icon and current
CH Set point will ash.
Turn the E dial clockwise to increase, and counterclockwise to decrease CH set point, until
desired temperature is reached.
Press E dial to save changes and to Exit.
Default CH set point is 130°F (54°C)
CH set point range is 130 - 180°F (54.4 ~ 82.0°C)
Indicate Example
Current Operating Temperature 110°F
Temperature sign Celsius or Fahrenheit letter °C or °F
Display and Controller are communicating
If ame detected
If pump is operating
When changing CH Set point, the CH Icon will ash
5.6 CH Set Point Change Mode
Changing between Celsius and Fahrenheit
When the button D
is pressed (for more than
5 seconds), temperature unit will toggle between
°C and °F.
To activate heat storage function, First turn OFF the power to the Control Display.
Then Press and Hold Button B
to get into the Installer Mode.
Rota te Dial E until you nd 5:St Tap Dial E to enter Storage Mode. Storage Mode indicates that the boiler is
maintaining the water temperature in the internal storage tank. When Storage Mode is active, the display
will appear as shown.
Turn the E dial clockwise to activate and counterclockwise to deactivate the Heat storage function. Default: ON.
Press E dial to save changes and to Exit.
Indicate Example
Current Operating Temperature 110°F
Temperature sign Celsius or Fahrenheit letter °C or °F
Display and Controller are communicating
If ame detected
Storage mode indication
If Pump is operating
5.7 Storage Mode
58page
E
E
B
B
C
C
A
A
D
D
58page
E
E
B
B
C
C
A
A
D
D
Page 10
Notes:
User’s Manual - The FT Series Wall Mounted, Combination Boiler
Page 11
Notes:
H2412500-
Dimensions and specications subject to change without notice in accordance with our policy of continuous product improvement.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
20 Industrial Way, Rochester, NH, USA 03867
20-10 Document 1488
User’s Manual - The FT Series Wall Mounted, Combination Boiler
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