Wolf COB-2 - Filling the Heating System

Installation
46 | WOLF GmbH 3066501_201910
5.12 Filling the heating system and checking for leaks
NOTE
Escaping water!
Water damage
► Check all hydraulic pipework for leaks.
Fill the system and vent it completely to ensure that the heat generator functions without any faults.
Preparation
► Flush the heating system before connecting the heat generator. This remove residues such as weld
beads, hemp, putty, etc. from the pipework.
► Open the cover of the air vent valve on the TS stratication cylinder.
► Loosen the locking cap on the air vent valve in the heat generator by one revolution.
► Open all radiator valves.
► Ensure that water quality requirements are met (Table 4.3 Electrical conductivity and water hardness).
5.12.1 Filling the heating system
► With the entire heating system (heating circuit, heat generator, cylinder) in a cold condition, slowly ll
the system via the inspection/BDF valve on the heating return until approx. 2 bar (1.5 to 2.5) pressure
is indicated
► Slowly open the expansion vessel.
5.12.2 Checking the hydraulic pipework for leaks
Test criteria Unit Value Measures
Maximum ow rate (100 l/min) L/h 6,000 -
Max. test pressure on the heating
water side
bar 4 -
Heat generator tested at the factory bar 4.5 -
Minimum system pressure bar 1.0 -
Safety valve bar 3 ► Close the shut-off valves in the heating
circuit to the heat generator
System pressure bar < 1.5 ► Top up with water.
5.13 Checking the pH value
Chemical reactions can change the pH level.
► Check pH level 8 to 12 weeks after commissioning.
► Compare value (4.3.2 Heating water).
pH level is within the specied range:
► no measures required.
pH level is not within the specied range:
► implement measures.
► Add alkalising additives.
5.14 Control modules
The control modules are used to set or display specic parameters of the heat generator.
BM-2 programming unit
This control module communicates with the heat generator and all connected extension modules via
eBus.
AM display module
This control module functions as a display module for the heat generator.