Burnham 8HE Series Installation, Operating And Service Instructions page 20

3
Water Trim and Piping
6. A hot water boiler installed above radiation
level must be provided with a low water cutoff
device as part of installation. The HydroStat
control provided with the boiler includes a low
water cutoff function.
7. A start-up strainer is recommended for all
installations (new and replacement alike) to
prevent system debris and sediment from
ending up in the boilers where it will inhibit heat
transfer and may eventually cause a cast iron
section to crack from overheating.
G. Indirect Water Heater (if used). Refer to Indirect
Installation, Operating and Service Instructions for
additional information. Install in same manner as
space heating zone.
Figure 3-6: Recommended Piping for Combination
Heating & Cooling (Refrigeration) System
20
(continued)
8HE Installation, Operating & Service Instructions
Water Quality Requirements
pH: 6.0 - 9.5
Total hardness grains / gal: < 7
Chlorides: < 50 ppm
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