Simply. Intelligent automation is the key to the Guardian Solar Water Heater’s outstanding efficiency and self-sufficiency. The Guardian Solar Water Heater will turn on and off daily, collecting heat whenever it is available. The automatic controller alerts the pump when to run. It also alerts the automatic check valve to open, simultaneously. The pump then circulates colder water (from the bottom of your special solar storage tank) through your solar collector(s), and returns the heated water to the tank. This cycle continues as long as sun is available to provide heat to your water. When there is no heat available, the controller turns the pump off, and closes the check valve to prevent any loss of heat from the tank.

The Guardian IP is an indirect solar water heating system is designed to accommodate climates where freezing weather occurs more frequently and a drain back system cannot be installed. The solar storage tank and the solar collectors do not differ from those utilized in the Guardian direct solar system. The only difference lies in the way that the water is processed through the solar collector and back to the storage tank; your potable water is heated indirectly through a heat exchange coil. The Guardian IP units’ automatic solar circulation pump sends a mixture of water and food grade propylene glycol through the solar collector and back to the heat exchange coil. Heat is transferred to your potable water via the exchange coil which is wrapped around the inner collection tank. The Guardian IP system is freeze proof because the solution in the solar loop is an 8:1 ratio of water and food grade propylene glycol. The Guardian IP solar system is only recommended in climates that experience frequent freezing conditions, and where a Guardian DB system cannot be installed so that it will drain.

The Guardian DB is an indirect drain back solar water heating system designed to accommodate climates where freezing weather occurs more frequently. The solar storage tank and the solar collector(s) do not differ from the Guardian direct solar system, the only difference lies in the way that the water is processed through the solar collector(s). Rather than circulating your potable water directly through the solar collector(s) and back to the storage tank, your water is heated indirectly through a heat exchanger contained in the drain back tank. The Guardian DB utilizes two circulation pumps. One pump circulates water through the solar collector and back to the exchange/drain back tank. A second pump simultaneously circulates water from the solar storage tank into the exchange/drain back tank transferring the heat from the water that is being circulating through the solar collector(s) to your potable water. The system is freeze proof because all the water in the solar loop drains down into the small heat exchange/drain back tank when the solar circulation pump is turned off by the automatic controller. With no water remaining in the solar collector(s) or solar plumbing, no freezing of the system can occur. The indirect drain back solar system is the most efficient solar water heater design for climates that experience frequent freezing conditions

The WH40 provides a convenient external override switch. Utilities in many areas of the country offer two electric rates for residential or commercial customers. One rate has the regular daytime electrical rate, the other is “off peak” rate. The off peak rate provides customers with “lower-priced” electricity during the nighttime and weekend periods. These time switches allow the customer to shift electricity use into these off-peak time periods in an attempt to save utility costs. Resistive Wattage is 40 Amp @120 – 480 VAC; Tungsten Wattage is 40 Amp 120 – 277 VAC. Product features 2 HP (24 FLA) 125 VAC; 5 HP (28 FLA) 240 VAC motor.

Honeywell Mixing Valves /p>

The Honeywell AM-1 series accurately adjusts, maintains and limits the hot water temperature to a desired setting selected by the user. In domestic water applications it offers scalding protection and bacteria growth control. By installing a Honeywell AM-1 mixing valve and raising water heater storage temperature setting and limiting mixed outlet water temperature to safe temperature more usable hot water is available. In heating applications it provides comfort and protects the equipment.

Honeywell Mixing Valves Features:

Dual purpose mixing or diverting valves
Constant water temperature under changing operating conditions
Reliable performance at minimum flow of 0.5 gpm
Proportional valve (simultaneous control of hot and cold water)
Energy savings through lower supply temperatures
Anti-scald, anti-chill thermal shock protection
Temperature lock at any point or high/low range
Nickel-plated brass/bronze construction, EPDM O-rings
All brass proportioning shuttle
Straight through design (hot and cold at the same level)
Maximum pressure 150 psi (1034 kPa), temperature 212°F (100°C)
Designed for easy maintenance and element replacement
Teflon® coated to prevent mineral build-up and extend life
Tamper evident design
Valve trapping not required

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