You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
LEGEND HEATERS<br />
SERVICE WORKBOOK<br />
HSI CONTROL TERMINAL 9 TEST<br />
LEGEND HEATERS<br />
SERVICE WORKBOOK<br />
TABLE FOR STEP 29<br />
S<br />
T<br />
E<br />
P<br />
HSI Control Terminal 9 Test<br />
7 Test for 24 VAC between Ram HSI control terminal 9 and ground<br />
(terminal 6).<br />
Gas Valve Coil – OHMS Resistance Table<br />
LEGEND<br />
MODEL<br />
GAS<br />
TYPE<br />
#1 GAS VALVE<br />
MODEL<br />
LW/B-500<br />
LW/B-750<br />
NG<br />
and<br />
LPG<br />
Robertshaw 7000-<br />
DERHC-STA<br />
#1 GAS<br />
VALVE<br />
COIL OHMS*<br />
#2 GAS VALVE<br />
MODEL<br />
#2 G.V.<br />
COIL<br />
OHMS<br />
69 (TH-TR) __ 14 (Safety<br />
Gas Value)<br />
NG WR-2509-258 64 HNWL-V8843N1006 64<br />
LPG HNWL-V88A1626 64 HNWL-V88A1626 64<br />
LW/B-1000 NG ITT-K3AF671S 5000 HNWL-V8843N1022 64<br />
LW/B-1000 LPG HNWL-V88A1626 64 HNWL-V88A1626 64<br />
*Volts divided by AMPS = OHMS Resistance<br />
Legend Gas Valve Table<br />
Legend Model Type Gas Type Valve<br />
500 for USA and<br />
Canada<br />
750 USA<br />
USA & Canada<br />
Canada<br />
1000 USA and<br />
Canada<br />
Nat/Propane<br />
Natural<br />
Propane<br />
Natural<br />
Natural<br />
Propane<br />
LW Circulator Information<br />
Heater Model<br />
Dual Solenoid<br />
Diaphragm<br />
Solenoid<br />
Diaphragm<br />
Diaphragm<br />
Solenoid<br />
Diaphragm<br />
Solenoid<br />
MISCELLANEOUS INFORMATION ON LEGEND 2000<br />
<strong>Water</strong> GPM @<br />
20°TR<br />
Pressure Drop thru<br />
Heater<br />
Circulator<br />
HP<br />
Circulator<br />
Motor<br />
LW-500 44 12.5 ft. hd. 1 B&G 3531<br />
LW-750 66 17.76 ft. hd. 1 B&G 3531<br />
LW-1000 88 8.8 ft. hd. 1 TACO 1935<br />
AMP DRAW TABLE<br />
RESULTS<br />
If the meter:<br />
then<br />
does not read 24 VAC<br />
check wiring to operating<br />
control.<br />
does read 24 VAC go to Step 8.<br />
Heater Model Blower Amp Pump Amp Ignition System<br />
LW-500 120V; 3.5A 120V; 10.4FLA 120V; 5A Max<br />
LW-750 120V; 3.5A 120V; 14.0FLA 120V; 5A Max<br />
LW-1000 120V; 3.5A 120V; 15.4FLA 120V; 5A Max<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products Co.<br />
Irving, Texas © 1997<br />
26<br />
Service Workbook<br />
Training Department<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products Co.<br />
Irving, Texas © 1997<br />
55<br />
Service Workbook<br />
Training Department
Change language