A.O. Smith Dimension, Instruction manual TWI 35-130 G/TWI 45-190 G, Description, 3.4.2, 3.4.3

Dimension	Description	TWI 35-130	TWI 45-190
R	Height drain valve connection	155	155
S	Height T&P valve connection	1040	1395
W	Height condensation drainage	100	100
1	Cold water supply connection	1” NPT	1” NPT
2	Hot water outlet connection	1” NPT	1” NPT
3	Gas control/burner connection	1/2” NPT	3/4” NPT
4	Drain valve connection	3/4” NPT	3/4” NPT
5	T&P valve connection	1” NPT	1” NPT
7	Condensation drainage connection	Rp 1	Rp 1

3.4.2	General and electrical data
	General and electrical data
Description		Unit	TWI 35-130	TWI 45-190
Volume		l	129	189
Empty weight		kg	70	82
Maximum operating pressure		bar	8	8
Fan speed at ignition		rpm	0	0
Operating speed of fan		rpm	7100	8750
Heating time ΔT = 45°C		min.	11	13
Electrical power consumption		Watt (W)	200	300
Supply voltage (-15% +10% VAC)		Volt (V)	230	230
Mains frequency		Hz	50	50
IP-class		-	30	30
3.4.3	Gas data
	Gas data
Description I2H		Unit	TWI 35-130	TWI 45-190
Gas category 2H: G20 – 20 mbar
Nominal load (Upper value)		kW	37,8	50,0
Nominal output		kW	35,8	47,3
Supply pressure		mbars	20	20
Gas consumption (*)		m³/h	3,6	4,8
CO2		Vol%	9,0 ± 0,5	9,3 ± 0,5

(*) Based on 1013,15 mbar and 15°C.

Instruction manual TWI 35-130 G/TWI 45-190 G 19