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SBD TANK TYPE HEATERS
SERVICE HANDBOOK
Technical Training Department
Ashland City, TN ©2003
51
COMPONENT PART INFORMATION
NAME SPECIFICATIONS
DUAL
CONTROLLER THERMOST
AT
120-180
O
RANGE, + 4
O
, 5
O
DIFFERENTIAL,
LIQUID FILLED, ANTI-
STACKING
HIGH LIMIT
(ECO)
OPENS - 205
O
FIXED, MANUAL
RESET BELOW 185
O
GAS VALVE NATURAL
GAS
SBD 120-400;24VAC, 60hz,
.6A,.7” to 3.5” W.C.,
STEP OPEN
SBD 500; 24VAC, 60hz, Dual
Gas Valve,
STEP OPEN
PROPANE
GAS
SBD 120-400;
2.5 – 10” W.C.
STEP OPEN
SBD 500; 24VAC, 60hz, Dual
Gas Valve,
STEP OPEN
INTERMITENT
IGNITION
DEVICE
CONTROL
NATURAL
GAS AND
PROPANE
GAS
24 VAC, 50-60 HZ, .1A;
.7 MICROAMP SIGNAL
CONTINUOUS RETRIAL
DAMPER COMPLETE
ASSEMBLY
MOTOR 24 VAC, 60 HZ, 120 RPM, 5
WATT
(NOT 110, 111 SERIES)
P.C. BOARD
W/RELAY
Service Switch
(NOT 110, 111 SERIES)
TRANSFORMER 120 V PRIMARY, 24 VAC
SECONDARY,
40 VA, 50-60 HZ, CLASS 2 "B"