Crown Mega-Stor 2 Installation Manual

17
VII. START-UP AND CHECK-OUT
1) Make sure that the system is free of leaks and that air is purged from the system.
 2)Manysolderinguxescontainzincchloridewhichcancauseseverecorrosiondamagetostainlesssteel.After
completingalldomesticwaterconnections,ushtheindirectwaterheater(IWH)thoroughlybeforeleavingthe 
installation. This is particularly important if the IWH will be unused for an extended period of time after installation.
3) Make sure that all electrical connections are correctly made and that no exposed high voltage wiring is present.
4) Temporarily disable the burner.
5) Make sure that each zone valve or circulator operates when, and only when, its thermostat calls for heat. Let each zone
operate long enough to purge any remaining air from the system.
6) Re-enable the burner and allow the IWH zone to operate. Make sure that the IWH control shuts down the zone when it
 issatised.
 7)Thesettingofcontroldeterminesthemaximumwatertemperatureinthetank.Thedierentialofthecontrolisaxed
8°F with a 150°F maximum setting, set by the manufacturer to the lowest setting of 100°F.
 Forthemostenergyecientoperation,adjustthecontrolfortheminimumwatertemperaturenecessarytomeet 
domestic water needs. Because hot water presents a scald hazard, it is best to set the control at 120ºF or lower and raise
it only if necessary to provide adequate hot water. See Table 7.2 for more information about scalding.
a) Adjust the dial shown in Figure 7.1 until the desired temperature setting on the dial is aligned with the arrow
shown.
b) After the IWH completes a heat-up cycle, check the water temperature at the faucet. Allow enough
watertoowtoensurethatthewatertemperaturereectsthetanktemperature.AdjusttheIWHtemperature
setting as necessary.
   i)Adjustingtoalowertemperaturesettingwillnotimmediatelyaectthewatertemperature.Draw
sucientwaterorallowthewaterheatertosituntilaheat-upcycleisinitiated.Repeatstepsa)andb).
   ii)Adjustingtoahighertemperaturesettingmaynotimmediatelyaectthewatertemperatureif
aheat-upcyclebegins,returntostepsa)andb).Ifaheat-upcycledoesnotbegin,drawsucient
water or allow the water heater to sit until a heat-up cycle is initiated. Repeat steps a) and b).
DANGER
Never attempt to ll a hot empty boiler
WARNING
Fix any leaks found before proceeding further. Leakage from the boiler piping can result in severe
damage to the boiler.