Dometic SeaXChange XTC Series User Manual & Installation Manual page 17

When a system will not be used for a significant period of time (i.e. 3 months – 1
year), the best practice for storage of the system is to allow the automatic fresh
water flush to operate by leaving the power to the system on and ensuring that the
vessels fresh water system is ON and pressurized. Normal replacement of fresh
water flush filter is still required every 4 months.
If the vessel will not be able to allow for fresh water flushing over the duration of
the storage period, the membrane vessels must have static water replaced with
membrane storage chemical solution. Membrane storage chemical part # is
252404263.
- The best practice for
winterization is to remove membrane rack and store with membrane storage
chemical in heated storage climate. The remainder of the system should be stored
with propylene glycol from sea cock to overboard to prevent freeze damage
(propylene glycol can be purchased at most hardware or automotive retailers).
- If the system is
going to be exposed to freezing or near freezing temperature while being stored
and the membrane rack can not be removed and stored in a heated climate,the
following should be done. A 50% solution of storage chemical and 50% propylene
glycol should be ran through the entire system from sea cock to overboard and
then valve off both sea cock and overboard. Membrane storage chemical part #
is 252404263.
WARNING: DO NOT USE ETHYLENE GLYCOL, ONLY NON-TOXIC
PROPYLENE GLYCOL SHOULD BE USED.
After storage or winterization, the system must be completely voided of all storage
chemical and or propylene glycol. To do this, follow the new system startup guide
on page 33.