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 [phone] Fax [phone]
www.raypak.com
Litho in U.S.A.
Raypak, Inc. reserves the right to make product changes or improvements at any time without notice.