Spec Sheet

Date: Bid Date:
Project #: Location:
Project Name: Engineer:
Contractor: Prepared By:
Contractor shall supply and install Qty.: Laars Model No. LFTHF199 oor standing modulating condensing boiler(s).
The boiler shall be a FT Series model LFTHF199 rated at the input and output shown on the schedule. The unit(s) shall be design-certied to
comply with the current edition of the Harmonized ANSI Z21.13 / CSA 4.9 Standard for Gas-Fired Low Pressure Steam and Hot Water Boilers. The
unit(s) shall be designed and constructed in accordance with the ASME Boiler & Pressure Vessel Code, Section IV requirements for 30 psi (207
kPa) maximum working pressure, and shall bear the ASME "H" Stamp and be listed by the National Board. The boiler shall modulate from 10-100%
of full re for 10:1 turndown ratio.
The boiler shall be listed with AHRI (Air Conditioning, Heating and Refrigeration Institute), with a minimum AFUE of 95%. The unit(s) shall be
constructed to comply with the e󰀩ciency requirements of the latest edition of ASHRAE Standard 90.1. The boiler shall meet the most stringent NOx
emissions requirements.
The re tube heat exchanger shall be stainless steel with aluminum core re tubes. The heat exchanger shall be a low head loss design, and shall
be accessible for visual inspection and cleaning of internal surfaces. The boiler shall be fully condensing design with built-in condensate drain and
trap. The heat exchanger shall have a limited 10-year warranty.
The boiler shall be sealed combustion, and use a premix ceramic ber burner and a zero governor gas valve to burn cleanly. The boiler shall
operate with 3.5-10.5" w.c. natural gas pressure (or 8-13” propane gas pressure with conversion). The combustion chamber shall include a sight
glass for viewing ame. The boiler jacket shall be a unitized shell nished with acrylic thermoset paint. The boiler shall have three service panels
for easy service access, and shall have adjustable leveling feet.
The boiler shall be designed and certied for vertical or horizontal Category IV venting, two-pipe or concentric. Vent materials may be PVC, CPVC,
Polypropylene or stainless steel. Vent pipe length may be up to 50 equivalent feet of 2" diameter pipe, or up to 100 equivalent feet of 3” diameter
pipe.
Air may be taken from the room, or ducted directly to the boiler. Air pipe materials may be ABS, PVC, CPVC, Polypropylene or galvanized. Air pipe
length may be up to 50 equivalent feet of 2" diameter pipe, or up to 100 equivalent feet of 3” diameter pipe. The boiler shall be equipped with a
removable and cleanable inlet air lter.
The boiler(s) shall be built with an integral stainless steel mini boiler tank that serves as a low loss header and boiler bu󰀨er tank.
The control shall have indirect domestic water heating logic, which shall have priority over the hydronic heating requirements, with the ability to
serve both indirect domestic water and space heating at the same time when conditions permit.
The boiler shall be packaged with mounted and wired pump inside the boiler jacket. The boiler shall be equipped with an ASME certied pressure
relief valve set at 30psi (207kPa). The boiler shall have a condensate trap that does not need to be primed and will not allow ue gases to pass
back through unit.
Unit shall be 120VAC, single phase, less than 4 Amps (including mounted pump) for connection to a 15A breaker. Maximum power consumption
shall be 160W. The control circuit shall be 24VAC. A three-foot length 14 AWG plug-in line cord shall be included for connection to a 120VAC/15A
receptacle. A 120V receptacle for condensate pump, along with a space for placement of the pump, shall be included as standard equipment.
Field connections for main power, external circulator, call for heat (thermostat or end switch), low water cuto󰀨, and outdoor sensor shall be easily
accessible via line voltage and low voltage terminal strips. The control shall have the ability to accept a 0-10VDC input connection from an external
control or building automation system, for remote temperature setpoint control. A bonus TT connection, for a high temperature zone shall be
included.
The ignition system shall be direct spark, and the boiler control shall be an integrated electronic PID temperature and ignition control with LCD,
push buttons and dial. It shall control the boiler operation and ring rate. The boiler display shall be visible without the removal of any jacket panels,
and shall be waterproof.
The display shall include a numeric display to indicate temperature values, and shall have icons that indicate call for space heating, storage heating
mode, anti-freeze mode, warm weather shutdown (summer mode), outside temperature mode, 0-10V setpoint mode, controller lock, status or
installer mode, ame signal, and pump operation.
The control shall have built-in outdoor reset feature with warm weather shutdown, and customizable reset curves, based on the outdoor
temperature and desired system water temperature. The boiler shall be shipped with the outdoor reset sensor, as standard equipment. The control
shall have customizable freeze protection, and anti-short-cycle logic.
The control shall easily allow the user to force the boiler into minimum or maximum ring rate, for boiler setup and diagnostic purposes. The
control shall monitor ue gas temperature and shall stop the boiler from ring if temperature is excessive. The boiler shall have built-in gas leakage
detection capabilities, such that when gas is detected for greater than 5 seconds, or three times within 10 minutes, the boiler will lock out for safety
purposes.
continued >>
Date: Bid Date:
Project #: Location:
Project Name: Engineer:
Contractor: Prepared By:
Residential
Floor Standing
Boiler
Model LFTHF 199, Indoor
Specication
FT SERIES
Contractor shall supply and install Qty.: _______ Bradford White Model No. BFTHF 199 oor standing modulating condensing boiler(s)
Brute
®
FT
Residential,
Floor Standing
Boiler
Model BFTHF 199, Indoor