Specifications

26
stcudorP retaW htimS .O .A Service Workbook
Ashland City, Tennessee 2005© Training Department
GENESIS PUMPS
STANDARD FLOW PUMPS
PRESSURE DROP INCLUDES THE LOSS THROUGH 50 (15.2M) EQUIVALENT FEET OF
PIPE AND NORMAL FITTINGS, WHEN INSTALLED WITH STORAGE TANK.
*"Stage" consists of a blower, gas valve, section of manifold, draft switch and Flame Sensor.
Stages will each activate based on inlet water temperature or tank temperature probe.
BOILER
MODEL
(OR EQUIV.)
IMPELLER
DIAMETER HP ELECTRIC
GW1000-1500 TACO 1635-S21 4.7" 1/2 7.0/3.5A
GW1800-2500 TACO 1635-S22 5.8" 1 13.4/7.9 A
STANDARD PUMPS - GW MODELS ONL
Y
Models
KBTUH Modulation Range (9%
Reduction)
Stages*
GB/GW - 1000 297 - 990 (30%) 3
GB/GW - 1300 500 - 1,300 (38%) 3
GB/GW - 1500 500 - 1,500 (33%) 3
GB/GW - 1,800 490 - 1,850 (27%) 4
GB/GW - 2100 500 - 2,100 (24%) 4
GB/GW - 2500 500 - 2,490 (20%) 4
Model # Input Rating
BTU/Hr.
Natural &
Propane
(LP) Gas
(
000
)
Output Rating
BTU/Hr.
Natural &
Propane (LP)
Gas
GPM
PD-FT.
Head
GPM
PD-FT.
Head
GPM
PD-FT.
Head
GPM
PD-FT.
Head
Deg.F
Rise
GPM
PD-FT.
Head
Deg.F Rise
GW -1000 990 831,600 83 5.1 55 2.7 42 1.5 154 12.2 11 42 1.5 40
GW -1300 1,300 1,092,000 109 7.2 73 4.2 55 3.2 154 14.5 14 55 3.2 40
GW -1500 1,500 1,260,000 126 10.1 84 6.3 63 4.3 154 16.3 17 64 4.3 40
GW -1850 1,850 1,554,000 154 19 104 10.1 78 6.4 154 18.5 20 78 6.4 40
GW -2100 2,100 1,764,000 N/A N/A 118 14.5 88 8.3 154 21.3 23 89 8.3 40
GW -2500 2,490 2,091,600
N/A N/A 139 18.5 105 11.6 154 23.2 28 106 11.6 40
Genesis BTU Input/Output And Flow Rates
BTU Input/Output Boiler Rate of Flow and Pressure Drop
20 Deg.F Rise 30 Deg.F Rise 40 Deg.F Rise Maximum Flow Rate Minimum Flow Rate