Closing And Securing The Inspection Ports; Mounting The Burner (If Required); Checking The Water Chamber For Deposits; Checking The Connections And Inspection Ports On The Water Side For Leaks - Viessmann Vitomax LW Series Operating And Service Instructions

Commissioning, inspection, maintenance

Closing and securing the inspection ports

B
A
Fig. 22

Mounting the burner (if required)

C
B
A
Fig. 23

Checking the water chamber for deposits

1. Fully drain the boiler.
2. Clean the water chamber by hosing it down.
Remove deposits via the drain outlet.
Remove stubborn deposits with approved chemical
solvents.

Checking the connections and inspection ports on the water side for leaks

To check for leaks, fill the boiler system with water.
Danger
The surfaces of steam boilers and hot water
boilers and other areas of the system are poten-
tially hot. Risk of injury!
Always wear protection when touching the rele-
vant areas during operation.
24
Fit in reverse order to the description on page 21 (tor-
que 20 Nm)
Danger
Risk of explosion from escaping gas.
Check all gas connections for tightness.
1. Fit burner plate to burner flange
B
.
A
2. If necessary, seal the annular gap between the
flame head and the insulation rings with heat-
resistant insulation material.
3. Connect the fuel supply lines (pressure-jet gas
burners: gas supply pipe).
3. Clean the sealing faces and thread of the inspec-
tion port. Replace the gaskets. Lubricate the
thread. Retighten the new gaskets after commis-
sioning (see table on page 16). Check again after
24 hours run.
2. Check all connections and openings for tightness.
3. If necessary, tighten the closures (see table on
page 16).
Installation instructions for the gaskets
with screws
C