Raypak RAYTHERM 624 User manual

Catalog No.: 5100.20-I Effective: 12-28-07 Replaces: 03-15-03

For use in commercial hydronic heating

and domestic hot water applications, with

Raypak boilers and water heaters.

• Raytherm

• Hi Delta

The Raypak Economaster II is a solid-state time-

delay relay which regulates pump operation to

optimize system efficiency and reduce operating

costs. It activates the pump as needed to support

hot water demand, and shuts the pump down only

after evacuating the boiler's residual heat to the

heating system or hot water storage tank.

The Economaster II saves money in several ways.

Electrical costs are reduced, since the pump is not

running constantly. In addition, gas costs are cut,

because residual heat that would otherwise es-

cape through the flue is captured, and water is not

subject to cooling during unnecessary circulation

through the system. Finally, without constant wa-

ter circulation, wear and tear on the boiler water-

ways is also reduced, prolonging the life of the

boiler. And the Economaster II delivers these

savings regardless of variable load conditions

experienced by the boiler!

ECONOMASTER II

Energy saving pump control for

Raypak heating and hot water boilers

Model Number 181 624 1223 1826 3001

BTUH Input 181,000 627,000 1,222,500 1,825,000 3,000,000

Cost per Therm Annual Savings (dollars)

0.30 56 196 381 570 936

0.60 113 391 763 1139 1872

0.90 169 587 1144 1709 2808

1.20 226 782 1526 2278 3744

Savings based on typical heater operation. Your results may vary.

Raytherm Heater Series

Economaster Circuit Board

Gas Savings with Economaster II

ELECTRICAL DATA

Adjustable Timing: 3 to 10 minutes (Factory set at 7 minutes)

Input Power (Primary): 24 VAC 50/60 Hz

Input Signal (Controller): 24 VAC or 120 VAC

Output (SPST Relay): Load - Up to 10 Amp-120 VAC Single Phase*

Ambient Temperature: -67°F to +158°F

* Motors larger than 3/4 HP and three-phase current require a contactor or motor starter

equipped with a 120 VAC coil.

SUGGESTED SPECIFICATION

The Economaster II pump delay controller shall maintain pump operation until all usable heat

from the combustion chamber is absorbed into the system or storage tank. It shall be adjustable

from 3 to 10 minutes to facilitate fine tuning to the specific system.

©RAYPAK, INC., 2151 Eastman Ave, Oxnard, CA 93030 (805) 278-5300 Fax (800) 872-9725

www.raypak.com

Litho in U.S.A.

Raypak, Inc. reserves the right to make product changes or improvements at any time without notice.

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