Commissioning And Startup - Nortec HP Series Installation And Operation Manual

Commissioning and Startup

Once the HP HVAC system has been installed, it can be commissioned. Prior to undertaking the
commissioning procedure ensure that the supply water system has been started and that a
supply of water is available.
1 Bleed the filters. For Giant pumps, open the water supply valve and press the red button.
For Danfoss pumps, disconnect the manifold supply line from the outlet of the pump and
wait until water begins to flow. It is helpful to connect a hose to the outlet and route to
drain.
2 Disconnect the manifold supply line from the outlet of the pump if not already done in step
1. Connect a hose and route to a suitable container.
3 Turn on pump and run for 1 minute. This will bleed the pump and clear any glycol used to
protect the pump during shipping. Temporarily connecting a jumper between terminals 1
and 5 on the pump controller terminal strip will activate the pump.
4 Reconnect the manifold supply line to the outlet of the pump.
5 Disconnect the manifold supply line at the inlet to the valve blocks. Connect a hose and
route to drain. In the case where 1 pump feeds multiple zones, work with only 1 zone at a
time.
6 Turn on the pump for several minutes and check for leaks. Again, the pump can be
activated temporarily using a jumper on terminals 1 and 5.
7 Reconnect the manifold supply line at the valve inlet.
8 Disconnect the manifolds from their individual feed lines ensuring that there is a provision
for drainage. This will allow for the valves and lines to be flushed and help protect the
nozzles.
9 Apply a 10 Vdc signal to the valve controller to activate it. Setting the humidistat to its
maximum value will provide this signal. If the humidifier will still not activate, ensure that all
safeties on valve controller terminals 1 and 2 are closed.
Under some circumstances humidistat wiring has not been completed at the time of
commissioning. For startup and testing procedures only:
- It is acceptable to use a jumper to close terminals 1 and 2.
- If no 10 Vdc signal is readily available, connecting a fresh 9V battery to terminals 3 and 4 will
simulate a demand signal. (Terminal 3 is negative, terminal 4 is positive.)
10 Start the pump in manual mode and check for leaks in the system.
The air handler should be operating during this step.
35 | HP Series Installation Manual