Samsung AM***MXWA Series Installation Manual

Contents

ENGLISH-10503 Others3 Ground heat exchanger circulation water (anti-freeze) usage standard (mandatory checklist)When using ground heat source, use anti-freeze to manage the freezing point If you do not use anti-freeze, it will cause thepipes to freeze and burst note that the manufacturer does not take responsibility for any damage caused1) All the circulating water (anti-freeze) and additives (corrosion inhibitor, bacteria inhibitor, foam inhibitors) mustbe used after consulting with the business ordering party or supervisor for its impact on environment, toxicity,corrosiveness, harmfulness to human and management plan2) Contractor must take extra care regarding on handling, packaging and transporting regulations and procedure of theanti-freeze3) Do not use the anti-freeze that is harmful to humans or equipment In addition, anti-freeze must be injected to thepipe according to specification and concentration level that is actually required by system (Do not directly injectundiluted solution, consult business ordering party or supervisor when undiluted solution was brought to the site)4) Before injecting the anti-freeze, evacuate any air that may remain in the system and apply pressure to check forleakage5) User must monitor and manage periodically to maintain initially designed concentration level of the anti-freezeIf the concentration level decrease due to leakage or over certain period of time, it may cause due to pipe to freezeand burst6) Usage condition of the anti-freeze when ground heat exchanger is installed (mandatory)- Flash point: Flash point of the anti-freeze must be over 90 °C- Biochemical oxygen demand: Amount of oxygen in 1 g of anti-freeze at 10 °C must be within 0 1~0 2 g and thisvalue must be maintained for 5 days- Freezing point: Concentration level of the anti-freeze must be maintained above freezing temperature- Toxicity: lD50 per each 1 kg of anti-freeze must be less than 5 g- Storage stability: It must not be separate when heated or cooled, and also turbidity should not be increased- Corrosion resistance: It must be corrosion resistant to all the metallic material used for ground heat pumps andpipes- Scale: Scale that has been accumulated on the plate type heat exchanger for one year of performance should notcause performance decrease over 15%4 Standard data for status of Anti-freeze (Based on temperature of anti-freeze at 15 °C)Type of brine Concentration [% Wt.] Freezing temperature Density [kg/m3]Ethylene glycol10 -3 2 1014 8720 -7 8 1031 3930 -14 1 1047 0740 -22 3 1061 65Propylene glycol10 -3 3 1009 7520 -7 1 1020 9130 -12 7 1030 5140 -21 1 1038 65

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