11
7. Screw an installer-supplied 1¼” pipe or
nipple into the water return tapping “R”.
8. Screw the supplied drain valve into tapping
“D”.
6. CONNECT BOILER WATER PIPING (continued)
6-b
Item Description Burnham Part Number
1 1¼ x 1¼ x ½ Tee 806601021
2 Immersion Well, ½ NPT 80160456
3 1¼ x 6 Nipple 806600029
4 1¼ Tee 806601030
5 1¼ x ¾ Bushing 806600504
6 LWCO Sensor, ¾ NPT 102305-01
7 1¼ x 3 Nipple 806600005
8 1¼ Elbow 806601528
9. See Figure 6b for suggested near boiler
piping of IQ Options.
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