Lochinvar FB-1500 User Manual

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CREST BOILER PRODUCT SUMMAR

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(FB) 1,500,000 - 5,000,000 BTU/HR

FB-1500 FB-2000 FB-2500 FB-3000 FB-3500 FB-4000 FB-5000

WATER

GALLON CAPACITY 96 132 161 181 215 291 380
HEATING SURFACE (SQ. FT.) 119.0 157.0 195.0 237.0 272.0 382.0 483.0
INLET WATER CONNECTION 4" Flanged 4" Flanged 4" Flanged 4" Flanged 4" Flanged 4" Flanged 4" Flanged
OUTLET WATER CONNECTION 4" Flanged 4" Flanged 4" Flanged 4" Flanged 4" Flanged 4" Flanged 4" Flanged
DRAIN 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2"
MAXIMUM FLOW RATE 350 350 350 350 350 350 350
MINIMUM FLOW RATE 25 25 25 25 45 45 50
20°F ∆T WATER FLOW (GPM) 138.0 184.0 230.0 277.0 323.0 253.0† 317.0†
HEAD LOSS (FT. OF HD.) 3.4 4.1 4.6 5.6 7.5 3.2† 6.5†
40°F ∆T WATER FLOW (GPM) 69.0 92.0 115.0 138.0 161.0 190.0 237.0
HEAD LOSS (FT. OF HD.) 1.5 1.6 1.3 1.2 1.2 1.6 3.1
MAX. WORKING PRESSURE (PSI) 160 160 160 160 160 160 160
# OF RELIEF VALVES 1111111
RELIEF VALVE SIZE 1-1/2" 1-1/2" 1-1/2" 1-1/2" 2" 2" 2"
RELIEF VALVE RATING (MBH) 3,075,000 3,075,000 3,075,000 3,075,000 4,237,000 4,100,000 5,100,000
RELIEF VALVE PRESSURE RATING (PSI

GAS

BTU/HR INPUT 1,500,000 2,000,000 2,500,000 3,000,000 3,500,000 4,000,000 5,000,000
BTU/HR OUTPUT (HIGH FIRE) 1,380,000 1,840,000 2,300,000 2,760,000 3,220,000 3,720,000 4,650,000
BTU/HR OUTPUT (LOW FIRE) 55,200 73,600 115,000 138,000 184,000 335,000 500,000
HORSE POWER (INPUT) 45 60 75 90 105 119 149
INLET CONNECTION 1-1/2" 1-1/2" 2" 2" 2" 2-1/2" 2-1/2"
MAX. INLET PRESSURE, NAT 14" w.c. 14" w.c. 14" w.c. 14" w.c. 14" w.c. 14" w.c. 14" w.c.
MIN. INLET PRESSURE, NAT 4" w.c. 4" w.c. 4" w.c. 4" w.c. 4" w.c. 4" w.c. 4" w.c.
MAX. INLET PRESSURE, LP 14" w.c. 14" w.c. 14" w.c. 14" w.c. 14" w.c. 14" w.c. 14" w.c.
MIN. INLET PRESSURE, L

ELECTRICAL *

VOLTAGE/HEATER (VAC) 120/1PH 120/1PH 120/1PH 120/1PH 120/1PH 208/3PH 208/3PH
VOLTAGE/CONTROL (VAC) 24 24 24 24 24 24 24
TOTAL AMPS 6.0 7.3 10.2 13.6 19.7 12 12

OF ELECTRICAL CONNECTION

DIMENSIONS

HEIGHT 80" 80" 80" 80" 80" 80" 80"
WIDTH 30-3/4" 30-3/4" 34-1/4" 40-1/2" 40-1/2" 53-3/4" 53-3/4"
DEPTH 71-1/2" 71-1/8" 76-3/8" 83-5/8" 83-1/4" 109" 109"
SHIPPING WEIGHT (lbs.) 1,900 2,150 2,560 2,920 3,225 4,750 5,500
OPERATING WEIGHT (lbs.

SERVICE CLEARANCES (RECOMMENDED)

FRONT 30" 30" 30" 30" 30" 30" 30"
REAR 24" 24" 24" 24" 24" 24" 24"
RIGHT SIDE 24" 24" 24" 24" 24" 24" 24"
LEFT SIDE 24" 24" 24" 24" 24" 24" 24"

OP 24" 24" 24" 24" 24" 24" 24"

DIRECT VENTING

VENT SIZE 7" 8" 9" 10" 10" 12" 14"
AIR INLET SIZE 7" 8" 8" 10" 10" 12" 14"
VENT CATEGORY IV IV IV IV IV IV IV
VENT MATERIAL
* Electrical - For alternate voltages and amp draws, please consult the factory or the installation and operation manual.
† Data based on 30°F delta T

FBN-PS-07 (Replaces FBN-PS-06) 08/12-Printed in U.S.A.

50 50 50 50 50 50 50

4" w.c. 4" w.c. 4" w.c. 4" w.c. 4" w.c. 4" w.c. 4" w.c.

1111133

2,496 3,054 3,652 4,126 4,744 6,900 8,000

Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel

Lochinvar LLC • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: [phone]

www.Lochinvar.com