A.O. Smith service manual Drain, Instruction manual TWI 35-130 G/TWI 45-190 G

6 Drain

Legends

Not mentioned numbers are not applicable.

1.pressure reducing valve (obligatory)

3.T&P valve (obligatory)

4.stop valve (recommended in pipe C and obligatory in pipe A)

5.non-return valve (obligatory)

6.circulation pump (optional)

9.drain valve

10.manual gas valve (obligatory)

11.service valve

12.temperature meter (optional)

13.condensation drainage

14.draw-off points

15.expansion valve (obligatory)

16.expansion vessel (obligatory)

17.three-way aeration valve (recommended)

18.water tank

19.float valve

A.cold water supply

B.hot water discharge

C.circulation piping

D.gas supply

E.water overflow

H.overflow pipe

Connections diagram

UNVENTED

VENTED

Instruction manual TWI 35-130 G/TWI 45-190 G 37