MegaTherm Commercial Pool Heating Boiler | Page 11 |
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SECTION 3.
Operation
3.1Controls - General (see Figures 12 and 13)
1.Electronic Ignition Controls:
a.Intermittent Ignition:
Pilots are automatically lit when the operating control calls for heat (Systems #4 and #9). The unit performs its own safety check and opens the main valves only after the pilot is proven to be lit. Whenever the pilot flame is interrupted, the main gas valve closes within 0.8 seconds.
b.Electronically Supervised Standing Pilot System (System #16):
When pilot flame fails, the ignition control module responds in less than 0.8 seconds and provides 100% safety shutdown.
2.Operating Controls:
An electronic temperature control is provided on model MT boilers to control the pool water temperature. The temperature sensor (thermistor) is located in the filter circulation piping (see Section 2.8).
3.Boiler Power (On/Off/Auto) Switch:
This provides for constant or automatic pump operation.
4.High Limit Controls:
The manual reset high limit switch is provided as standard equipment on all boilers. The temperature sensing bulb of the switch is always located in the heater outlet. Burners will automatically shut down whenever overheating of water occurs.
5.Flow Switch:
Standard on all model MT pool heating boilers. The switch is mounted in a tee fitting on the outlet header. This is a paddle type switch which is deflected by the water flow in the fitting. Any condition which interrupts or decreases the flow through the secondary loop will shut down the burners.
6.Low Water Cut Off (optional):
The low water cut off automatically shuts off boiler whenever water level in the heat exchanger drops below probe level. It is located in the inlet header.
3.2 Initial Start-Up
WARNING
Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the heater. the possible damage to a flooded appliance can be extensive and present numerous safety hazards. Any appliance that has been under water must be replaced.
Rating Plate
Ignition Control
Water
Circulating
Pump
Manual
Pilot
Valve
Manual
Main
Gas Valve
Safety
Gas
Valve
Operating/Safety
Gas Valve
FlowPressure
SwitchRelief
Valve
| In | Power |
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Out |
| (On/Off/Auto) |
| Switch | |
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| Pump Time |
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| Delay Relay |
Terminal Strip
Operating
Control