Solar Skies Mfg, LLC
106 Donovan Drive • Alexandria, MN 56308 • Ph 320-762-1151 Fax 320-762-1460
CD1065.doc Last Revision: 12/23/2010
PART 4: INSTALLATION
A. DRAIN BACK TANK LOCATION
To minimize expense and heat loss, locate the drain back tank as centrally to the solar tank and near the solar collectors
as possible. The tank must also be located in as warm a location as possible, away from areas which would subject the
drain back reservoir to freezing temperatures. If the solar tank has a gas-fired backup, this location must provide adequate
ventilation, with a minimum 6 – 8” clearance for access to controls and serviceable parts. The drain back tank has no
controls, but the sight glass must have clearance for inspection and service.
Install a 2” high catch pan with a minimum of ¾” drain line to prevent water damage if leakage should occur (See Figure
2).
Figure 2 – Catch Pan Illustration
B. SYSTEM PIPING AND PLUMBING
NOTE:
To ensure proper drainage, consider system piping
BEFORE
making a final decision on collector mounting
It is very important that you do the potable piping before you pipe into your solar system. Failure to do so
may damage your water heater.
It is mandatory that plumbing be done in accordance with all local and state plumbing codes. FAILURE TO DO SO WILL
VOID THE WARRANTY.
The solar collector array can be installed level but all horizontal pipe must be pitched at a minimum of ¼” per foot for
drainage and must drain without any fluid traps to prevent freezing. Ensure there are no dips, low points, or piping
configurations that may trap fluid and rupture in freezing conditions.
ALL PIPING AND PLUMBING CONNECTIONS SHOULD BE MADE WITH COPPER OR STAINLESS STEEL PIPE
ONLY
. No less than ¾” I.D. copper tube of the type meeting local codes must be used for piping. Pipe runs must be
solidly attached with proper clamping methods. Soldered connections should be secured with 95/5 lead-free solder. No
check valves are allowed within the solar piping loop. Remove integral check from pump if so equipped.
Insulate pipe with ¾” pipe insulation rated for 250
o
F minimum. Insulate all hot water piping and all exposed cold water
piping at the entrance to the solar tank. Paint pipe insulation exposed to ultraviolet radiation with insulation manufacturer
approved UV resistant latex based paint, or wrap with PVC pipe wrap. Support piping with plumbers straps or pipe
hangers and install in such a manner as to not crush the insulation.