Lochinvar 000 - 500 User Manual
Page 13
7.
Optional gas controls may require routing
of bleeds and vents to the atmosphere,
outside the building when required by local
codes.
13
Btu/hr DISTANCE FROM METER (In Feet)
INPUT
0-50
51 - 100
101 - 200
201 - 300
301 - 500
45,000
1/2"
1/2"
3/4"
1"
1 1/4"
75,000
1/2"
3/4"
1"
1 1/4"
1 1/4"
90,000
1/2"
3/4"
1"
1 1/4"
1 1/4"
135,000
3/4"
1"
1 1/4"
1 1/4"
1 1/2"
180,000
1"
1"
1 1/4"
1 1/2"
1 1/2"
199,999
1"
1"
1 1/4"
1 1/2"
2"
215,000
1"
1 1/4"
1 1/4"
1 1/2"
2"
260,000
1"
1 1/4"
1 1/4"
1 1/2"
2"
315,000
1 1/4"
1 1/2"
1 1/2"
1 1/2"
2"
360,000
1 1/4"
1 1/2"
2"
2"
2 1/2"
399,999
1 1/4"
1 1/2"
2"
2"
2 1/2"
500,000
1 1/4"
1 1/2"
2"
2"
2 1/2"
For each elbow or tee, add equivalent straight pipe from Table F to total length .
TABLE - E
SUGGESTED GAS PIPE SIZE
SINGLE APPLIANCE INSTALLATIONS
Diameter Pipe (inches)
3/4 1 1 1/4 1 1/2 2
3
4 5
Equivalent length of Straight Pipe (feet)
2 2 3 4 5 10
14 20
TABLE - F
FITTINGS TO EQUIVALENT
STRAIGHT PIPE
45,000 - 135,000
1/2"
180,000 - 315,000
3/4"
360,000 - 500,000
1"
TABLE G
GAS CONNECTIONS