Detroit Radiant Products Company HLV Series - Manual (Page 13)

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HLV Series 2.0 Design • Design for Condensing Systems
4 Measure the ‘Calculated Minimum Run’ for each burner. It is generally recommended to shorten
runs which exceed the ‘Calculated Maximum Run’. Refer to Figures 2.2 & 2.3 on p.14 for
examples of determining ‘Calculated Maximum Run’.
5 TEMPERATURE ZONES: In systems where dual zones will be used to control burners on separate
thermostats, the following guideline must be met:
a) Condensing pipe must begin at the point where two runs (operating on separate zones)
share common tubing; continuing to the pump. See Figure 2.1.
6 Confirm the following applies (condensing systems only):
a) A maximum of three elbows per run is allowed per system.
b) A maximum of six intersections (tees or crosses) are allowed per system.
c) All elbows and intersections less than 20 feet from a burner requires a reflector.
Figure 2.1 • Condensing Pipe for Dual Zone Systems and Simulated In-Line Burners
T
T
Condensing Pipe
Points where zone 1 & 2 share
common tubing. Condensing
pipe must begin here.
Zone 1
Zone 2
Condensing Pipe
Tie-In Burner