Connecting two panels is simple, just tee the 1/4" liquid tubes together, and 3/8" gas together. That's it. Adding more panels is based on the same principle with groups of 2 being Tee'd together as shown below.
Refrigeration tubing can be connected using the common 45-degree flared brass fittings. Some prefer to braze weld the tubes, saying it is better, however we have seen more leaks with brazing but the numbers are still low to say for sure.
How much room is required? Panel dimensions are 2 meters wide x 0.8 meter high, plus space between panels.Two panel columns wide x two rows high is 14 feet x 5.5 feet.
Four panels (7 kW / 24,000 BTU), is basically like 2 times two panels. Tee each pair of tubes, then tee the 2 groups together.
Six panels (10 kW / 36,000 BTU) are a challenging number because it is 3 pairs of two, or two pairs of 3, so achieving balanced liquid flow should follow these tips. The supply 3/8" tube is best being above the center of the group, or at the top, not at the bottom.
Eight panels (14 kw / 48,000 BTU) is basically 2 groups of four panels that are Tee'd together. Again, plan for the line set to come from the top down in most cases.
There are other possibilities, such as 1/2 panels East, and 1/2 West, and/or in one column wide x multiple rows high. Contact us if your plan is not covered here.