Component Part - A.O. Smith BTH 120 Service And Parts Manual

COMPONENT PART INFORMATION
Model
W.R. 36E36-319
Hnwl VR8305M-4009 192797-Nat.
W.R. 36C68-814
W.R. 36C68-809
HSI
Flame Rod
Hot Surface Igniter (HSI)
BTH Model Main Burner Orifice No. Main Orifice Size Inches
199 192477-0
150 192477-1
250 192477-2
120 192477-3
199 Prop 192477-4
150 Prop 192477-5
*-4 and -5 Red plated for propane.
** -4 and -5 stamped with "P" for propane
Note: Hex head of main burner orifice is upstream end - gas flows ou
A. O. Smith Water Products Company
©
Irving, Texas 2000
GAS VALVES
AOS PT# Voltage
192966-0 Nat. 24 VAC
24 VAC
192454-1 Prop 24 VAC
1922454-0 Nat. 24 VAC
AOS PT#
192478
AOS PT# Voltage
192478 120 VAC
ORIFICE TABLE
Orifice Table
0.304
0.235
0.360
0.204
.166*
.141*
Flame S
(µ)
.7 Micro
31
Service Handbook
Training Department