Lochinvar FBD2500 User Manual

CREST

COMMERCIAL BOILER

Submittal Sheet

FBN-Sub-06

CREST COMMERCIAL CONDENSING BOILER

JOB NAME ______________________________________________________________________
LOCATION ______________________________________________________________________
ENGINEER_______________________________________________________________________
WHOLESALER __________________________________________________________________
CONTRACTOR __________________________________________________________________
MODEL NO. _____________________________________________________________________
TYPE GAS ______________________________________________________________________
EQUIPMENT TAG________________________________________________________________
NOTES

H

RELIEF
VALVE

66-5/8"

14-7/8"

10 -1/4"

DRAIN

BACK

4" FLG
OUTLET

4" FLG
INLET

80"

11"

8"

CONDENSATE
DRAIN

HIGH
VOLTAGE

LOW
VOLTAGE

VENT

B

C

D

E

G

A

TOP

AIR

GAS

F

SIDE

LOW
VOLTAGE

DRAIN

J

K

WATER
OUTLET

WATER
INLET

HIGH
VOLTAGE

Crest Heating Boiler Dimensions and Specifications

Model Input Input AHRI NET AHRI
Number MBH MBH Thermal Output Rating Turndown

Min. Max. % MBH MBH

FB*2500 125 2,500 92.0% 2,300 2,000 20:1
FB*3000 150 3,000 92.0% 2,760 2,400 20:1
FB*3500 200 3,500 92.0% 3,220 2,800 18:1
FB*4000 335 4,000 93.0% 3,720 3,235 12:1
FB*5000 500 5,000 93.0% 4,650 4,043 10:1

Notes: *Insert “N” for natural gas, “L” for LP gas models and “D” for dual fuel. Indoor installation only. Information subject to change without notice.

†

Turndown rate reduced on LP gas models. Low NOx on FB2500-FB5000 models, consult factory.

†

Gas Air Vent Operating Shipping
A B C D E F G H J K Conn. Inlet Size Wt. (lbs.) Wt. (lbs.)

34-1/4” 76-3/8” 70-1/4” 17-3/4” 26-1/8” 9-3/4” 27-3/8” 6-1/4” 78” 83” 2” 8” 9” 3,652 2,560
40-1/2” 83-5/8” 76-3/8” 17-3/8” 31-3/8” 9-7/8” 34-3/4” 8-1/2” 82-1/8” 87-1/8” 2” 10” 10” 4,126 2,920
40-1/2” 83-1/4” 75-5/8” 17-1/4” 31-3/8” 9-7/8” 34-3/4” 7-1/4” 81-1/8” 86-1/8” 2” 10” 10” 4,744 3,225
53-1/2” 109” 100-3/4” 31-1/4” 40-3/4” 14-1/2” 45-3/4” 12-1/2” 104-1/4” 108-1/4” 2-1/2” 12” 12” 6,900 4,750
53-1/2” 107” 100-3/4” 28” 40-3/4” 11” 45-1/2” 9” 104” 108-1/4” 2-1/2” 14” 14” 8,000 5,550

Codes & Registrations

NSI Z21.13/CSA Certified

A
ASME certified, “H” Stamp / National Board
California Code Compliant
CSD1 / Factory Mutual / GE Gap Compliant
Bay Area Air Quality Management
District Qualified
Canadian Registration Number (CRN)
AHRI Certified

Smart Touch™ Features

CON·X·US® Remote Connect
SMART TOUCH™ Touchscreen Operating Control

Full-Color 8” Touchscreen LCD Display
Built-in Cascading Sequencer for up to 8 Boilers

Built-in Redundancy
Cascade Multiple Sized Boilers
Lead/Lag Cascade
Efficiency Optimized Cascade

Front-End Loading Capability with Copper-Fin II®

and Power-fin® Boilers

Building Management System Integration with

0-10 VDC Input
BACnet MSTP Communications
Modbus Communications
Outdoor Reset Control with Outdoor Air Sensor
Password Security
Domestic Hot Water Prioritization

DHW tank piped with priority in the boiler loop
DHW tank piped as a zone in the system with

the pumps controlled by the Smart System

DHW Modulation Limiting
Separately Adjustable SH/DHW Switching Times

Low Water Flow Safety Control & Indication
Inlet & Outlet Temperature Readout
Freeze Protection
Service Reminder
Time Clock
Data Logging

Hours Running, Space Heating
Hours Running, Domestic Hot Water
Hours Running, Modulation Rate
Ignition Attempts
Last 10 Lockouts

Programmable System Efficiency Optimizers

Night Setback
Anti-Cycling
Outdoor Air Reset Curve
Ramp Delay
Boost Temperature & Time

Three Pump Control

System Pump
Boiler Pump
Domestic Hot Water Pump

High-Voltage Terminal Strip

120 VAC / 60 Hertz / 1 Phase Power Supply

(FB2500-3500)

208 VAC / 60 Hertz / 3 Phase Power Supply

(FB4000-5000)

System Pump, Boiler Pump and DHW Pump Power

Low-Voltage Terminal Strip

24 VAC Auxiliary Device Relay
Auxiliary Proving Switch Contacts
Alarm on Any Failure Contacts
Runtime Contacts
DHW Thermostat Contacts
Unit Enable/Disable Contacts
System Sensor Contacts
DHW Tank Sensor Contacts
Outdoor Air Sensor Contacts
Cascade Contacts

0-10 VDC BMS External Control Contact

Standard Features

Up to 93% Thermal Efficiency (AHRI)
Up to 99% Thermal Efficiency in Low

Temperature Applications
Modulating Burner with up to 25:1 Turndown
Direct-Spark Ignition
Low-NOx Operation
Sealed Combustion
Low Gas Pressure Operation
Vertical or Horizontal Venting
Category IV Venting up to 100 Feet
ASME “H” Stamped Heat Exchanger
316L Stainless Steel Fire Tubes
160 psi Working Pressure
On/Off Switch
Adjustable High Limit with Manual Reset
Low Water Cutoff with Manual Reset & Test
High & Low Gas Pressure Switches w/Manual Reset
Low Air Pressure Switches
Condensate Trap w/ Blocked Drain Switch
Drain Valve
System Sensor
Outdoor Air Sensor
Inlet & Outlet Temperature Sensors
High Voltage Terminal Strip

Low Voltage Terminal Strip
Downstream Gas Test Cocks
50 psi ASME Relief Valve
Temperature & Pressure Gauge
Zero Clearances to Combustible

Materials
10-Year Limited Warranty (See Warranty

for Details)
1-Year Warranty on Parts (See Warranty

for Details)

Optional Equipment

Alarm Bell

BMS Gateway - BACnet IP or LonWorks
Condensate Neutralization Kit
SMART TOUCH PC Software
Common Vent Kits
Dual Fuel Gas Train
75 psi ASME Relief Valve
100 psi ASME Relief Valve
125 psi ASME Relief Valve
150 psi ASME Relief Valve
Air Filter Box
Motorized Isolation Valve
Variable Speed Boiler Pump

Electrical Options (Shipped Loose):

208V/3Ø/60Hz (Models FB2500-3500 only)
480V/3Ø/60Hz
600V/3Ø/60Hz

Venting Options

Direct Vent Vertical

Direct Vent Horizontal

Vertical Vent with Sidewall Air Intake

Sidewall Vent with Rooftop Air Intake

Vertical Vent with Optional Room Air

Sidewall Vent with Optional Room Air

Common Vent

Lochinvar, LLC
300 Maddox Simpson Parkway
Lebanon, Tennessee 37090
P: 615.889.8900 / F: 615.547.1000

Lochinvar.com

10/15—Printed in U.S.A.