NTI Trinity Ti 150 - 6.2 Secondary Loop Heating System; 6.2.1 Multiple Zones using Zone Valves; 6.2.2 Multiple Zones using Pumps

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6.2 Secondary Loop Heating System
The following are typical piping systems. It is the responsibility of the installing contractor to determine which system best meets the
need of the installation. Contractor modifications to these instructions may be required, based upon existing piping and system design.
6.2.1 Multiple Zones using Zone Valves
6.2.2 Multiple Zones using Pumps
Primary
Loo
p
Max. 12” apart
See figure
7.2.1 “Multiple 4 wire Zone Valves”
for wiring
7.2.2 “Multiple Zones with Taco Valve
controller
See figure
7.2.3 “Multiple Zones using pumps
and pump controller”
Installer may require throttling and check
valves to correctly regulate the system
Zone
1
Zone
2
Zone
3
Normally closed 4 wire
Zone Valves
With End Switches
Zone 1
Zone 2
Zone 3
Pumps sized to each
zones flow and head
requirements
Primary
Loo
p
Max. 12” apart