Heat Controller HEV/H 사용자 설명서

Installation, Operation & Maintenance

HEV/H SERIES

Heat Controller, Inc.

WATER QUALITY STANDARDS

Table 3: Water Quality Standards

Water Quality

Parameter

Material

Closed

Recirculating

Open Loop and Recirculating Well

Scaling Potential - Primary Measurement

pH/Calcium Hardness

All

pH < 7.5 and Ca Hardness <100ppm

Method

Index Limits for Probable Scaling Situations -

(Operation outside these limits is not recommended)

Ryznar

All

6.0 - 7.5

Stability Index

If >7.5 minimize steel pipe use.

Langelier

All

-0.5 to +0.5

Saturation Index

If <-0.5 minimize steel pipe use. Based upon 66°C HWG and

Direct well, 29°C Indirect Well HX

Iron Fouling

Iron Fe

(Ferrous)

All

<0.2 ppm (Ferrous)

(Bacterial Iron potential)

If Fe

(ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.

Iron Fouling

All

<0.5 ppm of Oxygen

Above this level deposition will occur .

Corrosion Prevention

All

6 - 8.5

Monitor/treat as

needed

Minimize steel pipe below 7 and no open tanks with pH <8

Hydrogen Sulfide (H

All

<0.5 ppm

At H

S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.

Rotten egg smell appears at 0.5 ppm level.

Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.

Ammonia ion as hydroxide, chloride,
nitrate and sulfate compounds

All

<0.5 ppm

Maximum

Maximum Allowable at maximum water temperature.

Chloride Levels

38 C

Copper

Cupronickel

<20ppm

<150 ppm

304 SS

<400 ppm

<250 ppm

<150 ppm

316 SS

<1000 ppm

<550 ppm

< 375 ppm

Titanium

>1000 ppm

>550 ppm

>375 ppm

Erosion and Clogging

Particulate Size and
Erosion

All

<10 ppm of particles
and a maximum
velocity of 1.8 m/s
Filtered for maximum
841 micron [0.84 mm,
20 mesh] size.

<10 ppm (<1 ppm "sandfree” for reinjection) of particles and a maximum
velocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm,
20 mesh] size. Any particulate that is not removed can potentially
clog components.

Notes:

Rev.: 3/22/2012

15Application not recommended.
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Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below

Scaling indexes should be calculated at 66°C for direct use and HWG applications, and at 32°C for indirect HX use.
A monitoring plan should be implemented.

The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. When water properties are outside of those
requirements, an external secondary heat exchanger must be used to isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the
warranty for the coaxial heat exchanger.