User’s Manual Document 1343D
H2375100D
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 for
Wall-Mounted, Modulating
Gas, Condensing, Heating Only, Boiler
Model FTHW
• Natural Gas (NG) - Factory Conguration
• Propane Gas (LP) - Field-Convertible
80,000 BTU/hr
100,000 BTU/hr
120,000 BTU/hr
140,000 BTU/hr
199,000 BTU/hr
THE
FT
SERIES
Page 2
1. Familiarizing yourself to
Heating Only Boiler
CONTENTS Pgs -
1. Familiarizing yourself to the FT ...............................2 - 3
2. Caring For Your FT .......................................................4
3. Start Up and Shut Down. .............................................4
4. Control Setup and Operation .................................5 - 10
The FT is a highly efcient, wall mounted,
condensing and fully modulating, residential
boiler. This Users Manual will guide you into the
basics of operating your FT
Please reference the Installation and Operation
Manual for complete details. Doc # 1342
4 SCREWS
MODEL NUMBER
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
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
User’s Manual - The FT, Heating Only, Boiler
Page 3
Shown is the FT Heating Only 140 MBH.
All sizes are very similar in component layout.
Page 4
3. Shut Down and Restart
3.1 To Start the FT
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
1. Turn off the main electrical disconnect switch.
2. Close all manual gas valves.
3. If freezing is anticipated, drain the FT 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.
2. Caring For Your FT
Your FT 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 clean and free from
combustible materials, gasoline and other ammable
liquids and vapors.
The FT 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 affected parts replaced
by a qualied service person.
2.3 In the Event of a Power Failure
The FT can not be operated during an electrical
power outage. If there is an extended power outage with
danger from freezing, then the FT (and all other water
systems) should be drained completely. When draining
the boiler, turn off 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 boiler
and its venting system.
User’s Manual - The FT, Heating Only, Boiler
Page 5
Page 54
SECTION 5. Control Display and Operation
5.1 Control Dial and Buttons
• Temperature Specifi 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
Functionality
PRESS (Tap) PRESS and HOLD (5 seconds)
A
Display Power
Turns Control Display ON / OFF
B Modes Tap to return to menu
(If Display Power was On )
Status Display Mode
(If Display Power was Off )
Installer Mode
C
Heating
Water
CH set-point change mode
(Maxium 82
°C(180°F))
D
Time / Date
Set
No Change To SET: Year/Month/Week/Day/Time/Min
E
Scroll / Select
Menu select or value
up(+)/down(-) or setting dial.
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)
E
WARNING
Do not use this appliance if any part has been under
water. Immediately call a qualifi 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.
The Control Display
4. The Control Display and Operation
Page 6
The FT Series Heating Only, Boiler
Page 55
5.2 LCD Overview
The LCD will illuminate when a user action is detected (a button is pressed) and will turn back off after 20 seconds.
Symbol Name Description
Service Reminder mode Service Reminder mode indication
Outside Temperature Mode Outside Temp setting indication
Anti-freeze mode Anti-freeze mode indication
Storage mode Storage mode indication
Information mode Information mode indication
Communication state Communication state indication
Time setting mode Time /Dispaly/Install mode indication
Fan operating mode Fan operating mode indication
Flame signal Flame Signal indication
CH pump mode CH pump mode indication
Storage pump mode Storage pump mode indication
Internal recirculation mode Internal recirculation mode indication
Celsius mode Indicated as Celsius temperature
Fahrenheit mode Indicated as Fahrenheit temperature
Heat demand mode Heat demand mode indication
DAY mode Current day mode indication
Cascade System connecting
mode
Cascade System connecting mode
indication
Cascade System operating mode
Cascade System operating mode
indication
4. The Control Display and Operation
(continued)
User’s Manual - The FT, Heating Only, Boiler
Page 7
Page 56
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 briefl y show a sequence of diagnostic codes before
entering into the ‘Operating Mode. It will then display the following information.
The Control Display can operate through user and service modes that have specifi c LCD output
and dedicated controls:
• Set-point change mode • Lock mode • Error mode • Status display mode
• Outside Temperature mode • Installer mode
* Control Display will not allow changing of button in case of lock mode activated.
Indicate Indicator
Current Operating Temperature Set-Point
If the Fan is operating
If a fl ame is detected
Celsius or Fahrenheit
or
Date and Time indicator
If Outside Temperature Sensor is operating
If there is a Demand for Central Heat (CH)
If CH pump state is
operating
If Internal recirculation pump is operating
If Communication state is activated
B C
E
A D
Page 8
Operating Mode
The FT Series Heating Only, Boiler
Page 57
5.4 Setting the Clock
The P-950EH Control Display does NOT have a daily timer or programmable thermostat.
Setting the Clock
a. Press and hold the
‘Clock button’ for about 5 seconds. Set the ‘Year’ by turning the dial E. And
then, press the dial
E to Save.
b. Set the ‘MON’ (Month) by turning the dial
E to the desired month number. Then press the dial E to Save.
c. Set the ‘DATE’ (1-31, Day of the Month) by turning the dial
E. Then press the dial E to Save.
d. Set the ‘HOUR’ (1-24, Hour of the Day) by turning the dial
E. Then press the dial E to Save.
e. Set the ‘MIN’ (1-60, Minute of the Hour) by turning the dial
E. Then press the dial E to Save.
f. Set the ‘Day’ (Sun - Sat) by turning the dial
E. Then press the dial E to Save.
To Exit at any time, press and hold the
‘Clock button’ for about 5 seconds.
B C
E
A D
User’s Manual - The FT, Heating Only, Boiler
Page 9
DHW Set Point Change Modes
Page 58
5.5 CH Set Point Change Mode
CH Set point Change Mode
Indicate Indicator
Current CH Temperature Set-Point
Celsius or Fahrenheit
or
If Communication state is activated
If fl ame is detected
Date and Time indicator
If CH pump is operating
If there currently a Demand for Central Heat (CH)
Default CH set-point is 180°F (82°C)
CH set-point range is 86°F ~180°F (30.0°C ~ 82.0°C)
To change CH Setpoint, press the C
button. The CH Icon and current
CH Setpoint will fl ash.
Turn the E dial clockwise to increase, and counterclockwise to decrease CH setpoint, until
desired temperature is reached.
Press E dial to save changes and to Exit.
B C
E
A D
Page 10
The FT Series Heating Only, Boiler
Page 59
5.6 Status Display Mode
Status display mode
Digital Display
Status Display Parameter
Description
O: ot Outdoor temperature Current outdoor sensor temperature
A: In 0-10 V display Current voltage of (0-10V input)
b: tt CH target temperature in cascade system
Current CH target temperature or Current
System target temperature in a cascade system
C: It CH return water temperature Current CH return water temperature
d: Fr FAN speed ( rpm) Current FAN speed ( RPM)
E: oP
CH supply temperature (Operating temperature)
Current heating temperature
F: Eh Exhaust gas temperature Current exhaust gas temperature
H: dH
Indirect DHW tank temperature
* If temperature sensor is not connected
then it will display with 0°F (0°C).
Current DHW tank temperature
I: oH Overheat water temperature Current Overheat water temperature
L: rt
1: PH
Burner Operation
Time
Time for supply power
L: rt on display
on sub menu
Unit : 1000hour
2: rh
Time for burner
operation
Unit : 1hour
3: rH
Time for burner
operation
Unit : 1,000hour
4: It Cycle for ignition
Cycle : 10 times the
displayed unit
5: IH
Cycle for ignition
Cycle : 10,000 times the
displayed unit
M:
CC
SELF Percentage of self units running. Percentage of self units running.
ALL
Capacity for all operating
cascade units
Percentage of all cascade units running.
This screen shows the overal cascade power output. The
range of this value of boilers communicating with theMaster
x 100. For example, if 8 boilers are connected and
communicating, the maximum cascade power is 800%.
Range: 0-100%
F1 – F
19
Capacity for individual boilers
Percentage of each cascade units running.
Ex. F1, F2, ….
N: St
System Temperature (cascade
mode) * If system temperature
sensor is not connected then it will
display with 0°F (0°C).
Current System Temperature (cascade mode)
To change any Status Parameter,
Press and Hold Button B to get into the Status Display Mode.
Rotate Dial E until you fi nd the Parameter that you wish to change. 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.
B C
E
A D
User’s Manual - The FT, Heating Only, Boiler
Page 11
Notes:
H2375100D
Dimensions and specications subject to change without notice in accordance with our policy of continuous product improvement.
Notes:
1706 Document 1343D
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
20 Industrial Way, Rochester, NH, USA 03867
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