Bosch CONDENS 5000W - Pressure Relief Drain Line

Pre-Installation
Bosch Condens 5000W – 6 720 646 195 (2018/10)
14
Internal waste pipe disposal
Disposal - kitchen or bathroom waste pipe
Alternatively if the first option is not possible an internal kitchen or
bathroom waste pipe can be used.
Fig. 12 Disposal to a waste pipe
Key to figure 12:
[1] Condensate discharge
[2] Air gap (20mm)
[3] Tundish
[4] Self sealing device
Disposal - bifurcated pipe
A washing machine waste pipe or bifurcated pipe etc. can also be used.
Fig. 13 Bifurcated pipe disposal
Key to figure 12:
[1] Condensate discharge
[2] Air gap (20mm)
[3] Tundish
[4] Self sealing device
[5] Dishwasher connection
3.5 Pressure relief drain line
NOTE:
▶ The PRV is a safety device for the boiler and if activated may
discharge boiling water steam through the relief valve drain line.
▶ Care should be taken when siting the drain line so that it does not
cause an obstruction or discharge above a window, entrance or other
public access where it could cause a hazard.
• The pressure relief valve and control valve shall be fitted with a drain
line that shall be of copper or other suitable pipping and be of a
diameter not smaller than the nominal size of the valve outlet as per
AS/NZS 3500.
• Drain line should be finished with a partial bend, near the outlet to
face the external wall to help prevent freezing.
• Pressure relief discharge pipe can be between 200and 300mm
above a paved area [1].
• Pressure relief discharge pipe can be between 75 and 300mm when
discharging into a gravel pit [2] of not less than 100mm diameter.
Fig. 14
[1] Paved area
[2] Gravel pit not less than 100mmØ
20mm
1
40mm Ø
40/50mm Ø
4
2
3
6720646195-16.1Wo
20mm
1
40/50mm Ø
4
2
5
3
6720646195-17.1Wo
300mm
300mm
200mm
75mm
1
2
6720646195-20.1Wo