Specifications

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Plain Water

Whitlam

Solar Hi-Temp

Clariant

Antifrogen SOL-HT

Dow

Dowfrost

Dow

Dowfrost HD

Type of Fluid

Water

Glycerine base

Higher Glycols with

Inhibitors

Propylene

Glycol with

Inhibitors

Propylene

Glycol with

Inhibitors

High Temp Stability

Excellent

Poor

Moderate

Viscosity at Freezing

Temperatures

Excellent

Poor

Moderate

Pressure Drop at

Freezing Temps

Low

High

Moderate

Speciﬁc Heat

High

Poor

Moderate

Thermal Conductivity

High

Moderate

Low

Moderate

Non-toxic*

Yes

FDA GRAS Rating

Yes

*Fluids that are not rated FDA Generally Recognized As Safe require a dual wall heat exchanger with leak detection. In

order to be used with a single wall heat exchanger the heat transfer fluid must be Generally Recognized As Safe.

Always check the MSDS of the heat transfer fluid to ensure that the right type of heat exchanger is being used.

c) When diluting a heat transfer fluid for use in a closed loop solar system always follow manufacturers’

guidelines.

4. Installation Preparation

4.1. Product Transport & Delivery

4.1.1. Solar Collector Transport

a) Safe Transport: When possible transport the boxes of evacuated tubes standing upright, NOTE the

THIS WAY UP arrows. If the boxes can only be laid down, always place on a flat, firm surface such as a

sheet of ply-board. If stacking the boxes, do not place more than 3 boxes high and ensure they are

strapped down in place to avoid movement. Straps should be padded with thick cardboard or similar at box

corners to avoid cutting into the boxes.

b) Freight Companies: Apricus DOES NOT recommend sending single systems using freight companies,

unless very well packed on a wooden pallet with the tubes standing upright. Always ensure spare tubes are

provided.

4.1.2. Tank Transport

a) Always adhere to packing guidelines on tanks, especially for glass lined tanks, which can be damaged if

transported lying down.

b) Take extra care when transporting heavy tanks especially if moving up and down stairs etc.

4.1.3. Carry Spares

a) Always carry spares of commonly used and easily lost or damaged components to avoid the “$100 ball

valve”, driving 1 hour to buy a $4 component because you didn’t carry any spares!

Apricus Solar Collector Installation & Operation Manual - USA