16
from auxiliary limit control with harness socket
connector. Push connectors together until snap,
on side of connector, is locked in place.
4. Install return manifold and relief valve, refer to
Figure 9.
Step a.
Locate the cast iron return manifold with
injector nipple (installed). Apply thread sealant
to 2" NPT male threads. Insert injector nipple
Figure 7: Optional Equipment - Low Water Cut-Off (LWCO) Control Assembly Details
Figure 8: Optional Equipment - Auxiliary Limit Control Assembly Details
into 2" NPT upper rear tapping on rear section,
engage 2" NPT male threads on end of manifold
and hand tighten.
Note:
Based on system return piping and access
to service boiler, see Figure 1 and Figures 13A
and 13B, predetermine if manifold orientation
is to be positioned for vertical, horizontal left or
horizontal right side return piping as shown in
Figure 9.
Summary of Contents for MPO Series
Page 6: ...6 Figure 1 MPO 84 Thru MPO 231 Water Boiler ...
Page 22: ...22 Figure 13A Water Boiler Piping for Circulator Zoned Heating System Supply Side Circulator ...
Page 38: ...38 Figure 27 L1 L2 and V1 Head Electrode Positioning and Gun Setting Beckett AFG ...
Page 49: ...49 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 50: ...50 Bare Boiler Assembly ...
Page 52: ...52 Bare Boiler Assembly ...
Page 54: ...54 Jacket Assembly ...
Page 56: ...56 MPO84 Thru MPO231 Water Boilers Trim and Controls ...
Page 58: ...58 Beckett AFG Burner ...
Page 61: ...61 Figure A2 LWCO Location ...