Hot Water Products

The Empire series collectors are our most popular and versatile products. The Empire has the same rated performance as the Imperial, comes in a wider variety of sizes and provides real value for both retrofit and new construction projects where tight budget considerations prevail.

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6-Year Limited Tank and PartsWarranty*
Brass drain valve
Choice of two models…storage tank or single element water heater, both specially equipped for installation with residential direct solar systems
Special threaded stud located near the outlet for attachment of tank sensors
Temperature and pressure relief valve included
Collector feed and return fittings located at front of tank for convenient installation
Isolated tank design for better heat retention
High efficiency heating element
Ruudglas® tank lining resists corrosion and prolongs tank life
Cold water inlet brings cold water to tank bottom to prevent mixing with heated water
Anode rod equalizes aggressive water action for prolonged tank life
Cold water inlet, hot water outlet, relief valve and anode rod at top of tank for easy access and fast, economical installation
Automatic temperature control
Over temperature protector
High Efficiency Models: R-Foam® insulation process with approx. R-value of R-17.6

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Fast, easy installation – reduces labor
Diagnostic LEDs give instant system operation feedback
Quick plug-in system monitoring capability via TD-GL
Lightning and static electricity protected
Proven reliability with outstanding warranty coverage
Sensors can be located up to 1000 feet away
Precision electronic accuracy within ±1°F
Made in the USA!

LED Indicators

Three highly visible LEDs show;

1. Power to control
2. Power out from control
3. Power out from control due to a recirculation mode to protect the system from freeze damage.

GL-30 Output

The GL-30 output is rated at 20 Amps and is designed to directly operate a pump or fan for heat collection when the controller is sensing an appropriate temperature differential

Differential

The GL-30 has an adjustable differential with a range of 8º to 24ºF. Solar systems with long pipe runs normally require a higher turn-on differential temperature, and open loop systems with short pipe runs usually require a lower turn-on differential temperature for optimum performance. The GL-30 offers versatility to tailor controls to numerous specific systems designs.

Storage High Limit

The GL-30 allows you to set a high limit storage temperature from 110º to 230ºF.

Recirculation Freeze Protection

Recirculation freeze protection, when enabled, turns the GL-30 output on to circulate warmer storage water through the collectors when near freezing temperatures are reached at the collector sensor.

System Test Switch

The system test switch manually switches the GL-30 to ON, AUTO, or OFF for complete control over the system at all times.

10 Year Limited Warranty

Goldline Controls Inc. now offers a full 10 year limited warranty on all solar controls and accessories! This warranty will cover repair or replacement of the control at no cost for the first 24 months. For years 3 through 5, the repair/ replacement fee will be a maximum of 25% of the current list price, and for years 6 through 10, the repair/replacement free will be a maximum of 50% of the current list price. The best controls now have the best warranty. See the Goldline warranty statement for detail.

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Grundfos Pumps has developed a circulator pump to meet the needs of .Domestic Hot Water Recirculation. systems.

Wet rotor design for quiet, maintenance free operation.

Stainless Steel rotor cladding and canister construction to prevent corrosion.

Composite impeller design for optimal application performance.

Built-in 6 foot, 115 volt ac line cord with a NEMA, 3 prong male plug.

Fully grounded connection

Designed specifically for Hot Water Recirculation applications.

D.C. 12 volt pumps are available upon customer request however due to numerous problems with D.C. pumps we do not recommend them. They tend to break down, overheat & accelerate corrosion. The replacement cost of the D.C. pump would pay for more than twenty years of electric power for an A.C. pump.

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