Manualshelf

Use and Care Manual

ManualsBrandsRand and Reardon ManualsBoilersRRG 84% AFUE Natural Gas Water Boiler with 268,000 BTU Input and 196,000 Output
39404142434445464748
47
RRG E
Installation, Operating & Service Manual
109446-01 - 6/19
Appendix: Low Return Water Temperatures (continued)
Primary-Secondary Pumping:
This is an improvement over
simple by-pass piping to reduce
condensation.
Again this is a fixed system. It
can not adapt to variations in
temperature and flow.
Best Alternative: System by-pass kit [part number 107795-01] that addresses these situations.
A strap on temperature sensor measures boiler inlet temperatures. This temperature signal is sent to a variable
speed pump that will ensure boiler inlet temperatures are always greater than the factory by-pass kit set point of
120F.
Kit includes all fittings, pump,
sensor and instructions.