Envision NSZ Installation Manual download pdf (Page 11)

NSZ/NDZ INDOOR SPLIT INSTALLATION MANUAL

Solenoid Wiring

Water control valves draw their power directly from a unit’s

24V transformer and can overload and possibly burn out

the transformer. Check total VA draw of the water valve

and ensure that it is under 15 VA.

Open Loop - Well Water Systems cont.

In ground water situations where scaling could be heavy

or where biological growth such as iron bacteria will be

present, a closed loop system is recommended. The heat

exchanger coils in ground water systems may, over a period

of time, lose heat exchange capabilities due to a buildup

of mineral deposits inside. These can be cleaned, but only

by a qualified service mechanic, as special solutions and

Water Quality

pumping equipment are required. Hot water generator coils

can likewise become scaled and possibly plugged. In areas

with extremely hard water, the owner should be informed

that the heat exchanger may require occasional flushing.

Failure to adhere to the guidelines in the water quality table

could result in loss of warranty.

Note:

Grains = PPM divided by 17

mg/l is equivalent to PPM

leetS sselniatS 613lekciN-orpuC 01/09reppoClairetaM

pH Acidity/Alkalinity 9 - 7 9 - 7 9 -7

Scaling Calcium and Magnesium Carbonate (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm

Hydrogen Sulfide

Less than .5 ppm (rotten egg smell

appears at 0.5 PPM)

mpp 1 naht sseLmpp 05 - 01

mpp 002 naht sseLmpp 521 naht sseLmpp 521 naht sseLsetafluS

mpp 5. naht sseLmpp 5. naht sseLmpp 5. naht sseLenirolhC

mpp 003 naht sseLmpp 521naht sseLmpp 02 naht sseLsedirolhC

mpp 05 -01mpp 05 - 01mpp 05 naht sseLedixoiD nobraC

mpp 02 naht sseLmpp 2 naht sseLmpp 2 naht sseLainommA

Corrosion mpp 5. naht sseLmpp 5. naht sseLmpp 5. naht sseLedirolhC ainommA

mpp 5. naht sseLmpp 5. naht sseLmpp 5. naht sseLetartiN ainommA

mpp 5. naht sseLmpp 5. naht sseLmpp 5. naht sseLedixordyH ainommA

mpp 5. naht sseLmpp 5. naht sseLmpp 5. naht sseLetafluS ainommA

mpp 0051-0001mpp 0051-0001mpp 0001 naht sseL)SDT( sdiloS devlossiD latoT

LSI Index

0.5 to

.05

0.5 to

.05

0.5 to

.05

Iron Fouling

Bacterial Iron Potential

mpp 2. < mpp 2. < mpp2. <

(Biological Growth)

Iron Oxide

Less than 1 ppm. Above this level

deposition will occur.

Less than 1 ppm. Above this level

deposition will occur.

Less than 1 ppm. Above this level

deposition will occur.

Erosion Suspended Solids

Less than 10 ppm and filtered for max of

600 micron size

Less than 10 ppm and filtered for max of

600 micron size

Less than 10 ppm and filtered for max of

600 micron size

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Envision NSZ Installation Manual Page 11

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