HTP UFT-100W User Manual

32
LP-542 REV. 7.16.15
The chart below represents the various system design temperature rise through the boiler along with their respective flows and friction
loss, which will aid in circulator selection.
SYSTEM TEMPERATURE RISE CHART
MODEL
20
o
F ∆T
30
o
F ∆T
40
o
F ∆T
Flow Rate (GPM)
Head (FT)
Flow Rate (GPM)
Head (FT)
Flow Rate (GPM)
Head (FT)
UFT-80W
7.6
3.1
5.1
1.8
3.8
1.2
UFT-100W
9.5
4.7
6.3
2.3
4.8
1.7
UFT-120W
11.4
5.4
7.6
2.5
5.7
1.6
UFT-140W
13.3
7.3
8.9
3.5
6.7
2.1
Table 16 – Boiler Flow Rates
Figure 20 – Zoning with Zone Valves and Indirect Water Heating – Direct Piping
NOTES:
1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment and detailing required by local
codes.
2. All closely spaced tees shall be within 4 pipe diameters center to center spacing.
3. A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.
4. The minimum pipe size of CH piping should be 1” in diameter.
5. Circulators are shown with isolation flanges. The alternative is standard flanges with full port ball valves. Purge valves can be used
with circulator flanges as an alternative.
6. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
7. VERY IMPORTANT – Minimum flow rates outlined in this manual must be maintained through the heat exchanger to minimize short
cycling.
8. In a valve-based system, each heating zone has a zone valve which opens when that zone calls for heat. Each zone thermostat is
wired to its corresponding zone valve. Contacts in the zone valves provide a signal to the boiler to operate when there is a call for heat.

HTP UFT-100W Specifications

General

Brand	HTP
Model	UFT-100W
Category	Boiler
Language	English