Owner's manual

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SECTION 3 HPN-IOM-2014-0416 OPERATION
3-27
! WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
has completed, followed by main  ame activation. Check the presence of
the  ame by observing  ame signal strength from  ame programmer or
testing device. Operator attendance during warm-up is a recommended
precaution.
8. Start-up is considered complete when the unit begins to throttle back or
shutdown on target temperature.
Daily Shutdown
1. Set control switch to “Pump” pump running, burner o .
2. Allow the  uid to circulate for approximately 20-30 minutes and then set
the control switch to the “O ” position.
3. When using  uid cooled pump, continue to circulate cooling water to
pumps for 30 minutes after stopping circulation.
4. Open power supply switches.
5. Units switched o by an automatic time switch should have an extra relay
 tted to allow 20-30 minutes of  uid circulation after stoppage in order to
prevent localized over heating of  uid.
6. Close fuel valves if required. Closing of system valves is not generally
necessary unless maintenance of components requires a partial draining of
the system.
7. Because of the high temperatures usually applied, leaks are not expected
to occur when cool down is achieved, provided pipework is free to contract
naturally when cold.
Before Leaving the Installation
1. Check all controls to insure they are operating properly. Cycle the heater
several times by raising and lowering operating temperature on the
thermostat.
2. Make sure the installation complies with all applicable codes.