Lochinvar KNIGHT KB 500 User Manual

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

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