Zehnder Rittling FV-04 Installation, operation and maintenance manual - page 12
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Initial start-up
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Verify that all isolation valves are open and control valves (if any) are
wired.
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Verify that all air has been removed from the hot water system and
there is no air trapped in the coil.
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Verify that voltage is within an acceptable range and that fuses and
breakers are properly sized.
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If unit is controlled by a thermostat, verify that the control system is
calling for heat.
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Verify that the unit switch is in “off” position.
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Turn on line power to unit. Move unit switch to “on” position.
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Adjust blower speed to maximum setting.
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Verify that blowers are moving air through the discharge louvers (top)
of the unit.
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Adjust blower speed to minimum setting.
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Verify that blowers are moving air through the discharge louvers (top)
of the unit.
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If unit is controlled by a thermostat, verify that the control system is
working by adjusting temperature setting to turn system on and off.
Continued operation
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Set unit switch to “on” position.
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If unit is controlled by thermostat, set thermostat to desired control
temperature.
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Set fan control to desired speed.
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Maintain unit according to the instructions listed in the maintenance
section of this document.
Operation