Bradford White FT Series Installation And Instruction Manual
Wall-hung modulating condensing gas boiler (includes optional floor stand accessory information)
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Cascade Instructions
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water boiler installation and maintenance. Improper installation and/or operation could create
carbon monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper
installation and/or operation will void the warranty.
If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
flammable 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 fire department.
Installation and service must be performed
by a qualified installer, service agency, or gas
supplier.
WARNING
Installation and Cascade Instruction Manual
FT
FT
SERIES
SERIES
Wall-hung Modulating Condensing
Gas Boiler (includes optional Floor
stand Accessory Information)
Models: FTHW399NX, FTHW301NX
•
Natural Gas (NG)
Factory Configuration
•
Propane Gas (LP)
Field-Convertible
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 inflammables dans
le à proximité de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE
• 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 qualifié
ou par le fournisseur de gaz.
AVERTISSEMENT
GAZ:
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Table of Contents
Related Manuals for Bradford White FT Series
Summary of Contents for Bradford White FT Series
- Page 1 Cascade Instructions Installation and Cascade Instruction Manual SERIES SERIES Wall-hung Modulating Condensing Gas Boiler (includes optional Floor stand Accessory Information) Models: FTHW399NX, FTHW301NX • Natural Gas (NG) Factory Configuration • Propane Gas (LP) Field-Convertible FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler installation and maintenance.
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Page 2: Table Of Contents
Page 2 Table of Contents SECTION 1 General Information ..........3 1.A General Plumbing Connection Guidelines ......... 3 1.B Pipe Sizing for system and common supply & return headers in Cascade Systems .......... 3 1.C Product Flow Paths and Characteristics ........4 1.C.1 Central Heating flow. -
Page 3: Section 1 General Information
Page 3 SECTION 1 General Information. Multiple FTHW Series boilers can be connected via a cascade communication cable to create a bank of boilers that work in tandem. Up to 4 boilers can be controlled by a “Leader” FTHW Series boiler with the others acting as “Followers”. -
Page 4: C Product Flow Paths And Characteristics
Page 4 1.C Product Flow Paths and Characteristics 1.C.1 Central Heating flow. Boiler Heating Mode. This boiler has top and bottom return and supply water connections. Place the combo brass adaptor fitting on the upper left supply connection. Use at least one of the CH return and CH supply connections. Cap off any other connections that will not be used. -
Page 5: D Miscellaneous Wiring
Page 5 1.D Miscellaneous Wiring Figure 2 - Field Connections for boiler... -
Page 6: Section 2 Piping And Wiring Diagrams
Page 6 SECTION 2 Piping and Wiring Diagrams 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 3 - FT-301/399 Primary Secondary with zone valves and indirect... - Page 7 Page 7...
- Page 8 Page 8 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 4 - FT-301/399 with indirect and high / low temp zones...
- Page 9 Page 9...
- Page 10 Page 10 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 5 - Multiple - FT-301/399 with Low Loss Header...
- Page 11 Page 11...
- Page 12 Page 12 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 6 - Three FT-301/399s Heating Only models, cascaded, Retro replacement...
- Page 13 Page 13...
- Page 14 Page 14 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 7 - Three FT-301/399s Heating Only models, cascaded, Retro Replacement Option 2...
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- Page 16 Page 16 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 8 -...
- Page 17 Page 17...
- Page 18 Page 18 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 9 - Two FT-301/399s Heating Only models, cascaded with pumps...
- Page 19 Page 19...
- Page 20 Page 20 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 10 - Multiple - FT-301/399 with Floor Stand...
- Page 21 Page 21...
- Page 22 Page 22 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 11 - Two FT-301/399s Heating Only models, cascaded with low temp zones and air handlers...
- Page 23 Page 23...
- Page 24 Page 24 2.A Piping and Wiring Diagrams for FTHW301/399NX boilers Figure 12 - Two FT-301/399s Heating Only models, cascaded with pumps and two Indirects...
- Page 25 Page 25...
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Page 26: Section 3 Cascade Communications (Cascade Cable)
FT1868 : System Sensor (need only 1). FT1861 : FT Series Cascade Communication Cable (1 per unit) with Ending Resistor. Example. If you are cascading 4 units, you will need 4X FT1861’s and you will not use 5 of the resistors. - Page 27 Page 27 Page 23 Cascading the FT Series ‘Heating Only’ Boiler Leader Control Leader Control Board Board Follower Control Follower Control Board Board First Male Ending Connector. Ending Resistor First Male Connector. Resistor Wrap it up neatly and wire-tie it.
- Page 28 Cascade Connection Pin Knock Outs & Cable Gland Terminal Blocks FT1861 : FT Series Cascade Communication Cables. Install per local codes and requirements. Figure 14 - Using the available ‘Knock Outs’. NOTES: The cascading communications cable is 60" long. Routing for the FTHW301/399NX models can be via the side floor plastic knock-outs provided.
- Page 29 Page 29 The cascade system can be activated by a dry contact thermostat (T/T connections on Leader boiler) or by an external 0-10V signal (on the Leader boiler). In order for the space heating portion of the system to operate properly, the thermostat, 0-10V signal, and/or outdoor sensor MUST be connected to the Leader boiler only.
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Page 30: Section 4 The Control Display
Page 30 SECTION 4 The Control Display 4.A The Control Display (Status Light) ( Constant green when operating normally) 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 instructiuon on how to navigate into the many functions of the Boiler and to change temperature set points, set system variables and controller parameters. -
Page 31: B The Lcd
Page 31 4.B The LCD 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 / Display / Install mode indication Fan operating mode... -
Page 32: Section 5 Cascade Programming
Page 32 Page 28 Page 28 Page 28 Page 28 Page 28 SECTION 5 Cascade Programming SECTION 5 Cascade Programming SECTION 5 Cascade Programming AUTODESK AUTODESK SECTION 5 Cascade Programming SECTION 5 Cascade Programming SECTION 5 Cascade Programming 5.A Programming a Cascade System 5.A Programming a Cascade System 5.A Programming a Cascade System AUTODESK... -
Page 33: B The Cascade Ch Function For Set Point Operation
Page 33 5.B The Cascade CH Function for Set Point Operation CH set point Change Mode (This mode is only functional when the outdoor sensor (O/S) is not connected.) In accordance with the United States Energy Policy and Conservation Act, this boiler is equipped with outdoor reset capability, a feature that saves energy by reducing boiler water temperature as heating load decreases Refer to Section 5.9 in the FTHW301/399NX Boiler Installation Manual regarding the O/S details. -
Page 34: C Outdoor Reset Operation
Page 34 Index Numbers Parameter Description When set, the appliance will operate to heat CH water when water temperature falls below a differential setting. Set differential temperature to turn 17: bo Example: If set point is 180°F and differential is 27°F, burner “ON”... -
Page 35: E 'L-Tt Or Motorized Mixing Valve Mode' For Cascade System
Page 35 5.D Domestic Hot Water ‘Storage Mode’ for Cascade System (continued) Using a DHW Sensor (thermistor type) When using a DHW sensor, the boiler monitors the temperature of the indirect water heater. Connect the sensor to the “DHW Temp Sensor” terminals of the boiler piped to the indirect water heater. When using a DHW sensor, Parameter # 39 (39:SA) must be set to “SEnS”. -
Page 36: F Cascade System Error Codes
Page 36 5.F Cascade System Error Codes For a complete list of error codes, reference the FT Series Installation and Operation Manual 1342. Er:30 System Sensor Short NOTE: This error will only appear if the boiler is used in a cascaded system.