A.O. Smith BTX-80 - Manual (Page 3)

3
* CAUTION HARNESS HAS 120 VAC. IN OPERATION.
** See "PLANNING THE VENT SYSTEM", "CONDENSATE" and "PREPARATION
OF BLOWER ASSEMBLY" in the "INSTALLATION" section for more
information.
*** The side recirculation loop connections may not be used as the primary water
inlet and outlet connections. For your convenience, plugs are installed in
these fittings at the factory. Remove these plugs if needed for your specific
installation. Otherwise (as with all connections) check for leaks while filling
the tank with water and after completing the installation.
FIGURE 1
REPLACEMENT PARTS AND DELIMING PRODUCTS
Replacement parts and recommended delimer may be ordered
through authorized servicers or distributors. When ordering parts,
provide complete model and serial numbers (see rating plate),
quantity and name of part desired. (See Replacement Parts Insert
for list of part numbers and descriptions.) Standard hardware items
may be purchased locally.
(A) VENT PIPE
(B) ANODE
(C) HOT WATER OUTLET
(D) OUTLET (120 VAC)
(F) GAS SUPPLY
(G) MAIN MANUAL GAS
SHUT OFF VALVE
(H) GROUND JOINT UNION
(J) DIRT LEG
(K) OUTER DOOR
(L) UNION
(M) INLET WATER SHUT
OFF VALVE
(N) COLD WATER INLET
(O) INLET DIP TUBE
(P) TEMPERATURE AND
PRESSURE RELIEF VALVE
(Q) RATING PLATE
(R) INSULATION
(S) VENT TERMINAL
(T) DRAIN VALVE
(U) IGNITER AND MAIN
BURNER
(W) DRAIN PAN
(X) CONTROL
(Y) CONTROL HARNESS*
(AA) MOTOR & BLOWER
(CC) CONDENSATE FITTING
(4 Places as Shown)**
(DD) PLASTIC TOP
(EE) ON/OFF SWITCH
(FF) EXHAUST TEE
(GG) ELBOW
(HH) BUSHING
(II)
NIPPLE
(JJ) CONDENSATE TEE
(KK) HOSE BARB
(LL) PLUG
(MM) VENT PIPE ASSEMBLY #1
(NN) VENT PIPE ASSEMBLY #2
(OO) VENT PIPE ASSEMBLY #3
(PP) SIDE RECIRCULATION
LOOP INLET***
(QQ) SIDE RECIRCULATION
LOOP OUTLET*** (not shown)
(RR) VENT ATTENUATION
ASSEMBLY (VAA) (Optional)
TYPICAL INSTALLATION
(U) NATURAL GAS MAIN BURNER
WITH IGNITER ASSEMBLY
SIDE VIEW
VACUUM RELIEF
VALVE
*INSTALL PER
LOCAL CODES
TEMPERATURE ADJUSTMENT BUTTONS
TEMPERATURE INDICATORS (X)
CONDENSATE ASSEMBLY