Heater Assembly - Denco CAIRplus Operation Manual

CAIRplus
8.5.7 Maintenance of other filters
DANGER!
8.6

Heater assembly

8.6.1 Commissioning of heater assembly (pumped warm water)
DANGER!
Requirement:
Commissioning:
8.6.2 Maintenance of heater assembly (pumped warm water)
DANGER!
PR-2009-0096-GB • Subject to modifications • R8-10/2015
•
Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
Refer to the relevant maintenance instructions specified in the supplied documenta-
tion.
Electrical hazard and danger of rotating unit parts with sharp edges!
•
OBSERVE PERSONAL PROTECTION MEASURES
•
Please consider the safety instructions on page 5 and page 55ff when
performing all the described activities!
•
Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
Complete the following commissioning steps:
•
Check supply and return lines for proper connection.
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Counterflow mechanism and water inlet on air-discharge side.
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Check shut-off devices and other fixtures for proper installation.
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Open provided air vent, if automatic air-venting is not installed.
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Charge the coil at the lowest point to prevent air cushions and water hammer.
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Slowly open air vent and wait until the coil is flushed with water.
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Open air vent completely.
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Close air vent; if the levels are different - close air vent gradually until water
displaces air and starts to run out.
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Activate primary and secondary pump, check rotation direction and put the coil into
service for ample time.
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Set the control valves in reverse position (three-way valves).
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Perform a subsequent check by repeated opening of air vent.
•
Check for leak-free condition.
•
Operate frost protection in a regulated mode to prevent over-conditioning.
•
Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
Carry out the following maintenance steps:
•
Check for leak-free condition and possible dirt on the air side.
•
To ensure frost protection, periodically check the safety devices and take proper
precautions such as draining the equipment or adding antifreeze agents.
•
Ensure that pipework connections and mountings are securely fixed.
•
If necessary clean the coil on the air side (blow out with compressed air or low-
pressure water).
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Air vent.
Commissioning and Maintenance
71