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WATER
GALLON CAPACITY
HEATING SURFACE (SQ. FT.)
WATER CONNECTIONS
DRAIN
20°F ΔT WATER FLOW (GPM)
HEAD LOSS (FT. OF HD.)
35°F ΔT WATER FLOW (GPM)
HEAD LOSS (FT. OF HD.)
MAX. WORKING PRESSURE (PSI)
# OF RELIEF VALVES
RELIEF VALVE SIZE
RELIEF VALVE RATING (MBH)
RELIEF VALVE PRESSURE RATING (PSI)
GAS
INLET CONNECTION
MAX. INLET PRESSURE, NAT
MIN. INLET PRESSURE, NAT
MAX. INLET PRESSURE, LP
MIN. INLET PRESSURE, LP
BTU/HR INPUT
BTU/HR OUTPUT (HIGH FIRE)
BTU/HR OUTPUT (LOW FIRE)
ELECTRICAL
VOLTAGE/HEATER
VOLTAGE/CONTROL
TOTAL AMPS
# OF ELECTRICAL CONNECTIONS
DIMENSIONS
HEIGHT
WIDTH
DEPTH
SERVICE CLEARANCES
FRONT
BACK
RIGHT SIDE
LEFT SIDE (PIPING)
TOP
DIRECT VENTING
SIZE
VENT CATEGORY
VENT MATERIAL
Lochinvar Corporation • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: 615-547-1000
KBX-PS-03 (Replaces KBX-PS-02 06/08)
®
KNIGHT
BOILER PRODUCT SUMMARY
(KB) 399,000 - 800,000 BTU/HR
KB-399
KB-500
3.4
4.2
41.8
50.8
1-1/2"
1-1/2"
3/4"
3/4"
37
47
21
23
21
26
8
10
160
160
1
1
3/4"
3/4"
697
697
50
50
1"
1"
10.5" w.c.
10.5" w.c.
4.0" w.c.
4.0" w.c.
13.0" w.c.
13.0" w.c.
8.0" w.c.
8.0" w.c.
399,000
500,000
372,267
466,500
74,453
93,300
120
120
24
24
1.5
1.7
1
1
42-1/2"
42-1/2"
15-1/2"
15-1/2"
27"
31-1/4"
24"
24"
14"
14"
0"
0"
24"
24"
24"
24"
4"
4"
IV
IV
PVC
PVC
www.Lochinvar.com
KB-600
KB-700
4.2
5.0
50.8
57.8
2"
2"
3/4"
3/4"
55
65
31
30
32
37
13
11
160
160
1
1
3/4"
3/4"
697
1,352
50
50
1"
1"
10.5" w.c.
10.5" w.c.
4.0" w.c.
4.0" w.c.
13.0" w.c.
13.0" w.c.
8.0" w.c.
8.0" w.c.
600,000
700,000
567,600
660,100
113,520
132,020
120
120
24
24
2.7
2.7
1
1
42-1/2"
42-1/2"
15-1/2"
15-1/2"
36-1/4"
40-1/4"
24"
24"
14"
14"
0"
0"
24"
24"
24"
24"
4"
6"
IV
IV
PVC
PVC
KB-800
5.7
65.3
2"
3/4"
74
33
42
12
160
1
3/4"
1,352
50
1"
10.5" w.c.
4.0" w.c.
13.0" w.c.
8.0" w.c.
800,000
752,000
150,400
120
24
2.7
1
42-1/2"
15-1/2"
45-1/4"
24"
14"
0"
24"
24"
6"
IV
PVC
06/08-Printed in U.S.A.
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