Filling The Heating System And Checking For Leaks; Filling The Heating System; Checking The Hydraulic Pipework For Leaks; Checking The Ph Value - Wolf COB-2 Operation Instructions Manual

Installation
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 stratification 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
5.12.1

Filling the heating system

► With the entire heating system (heating circuit, heat generator, cylinder) in a cold condition, slowly fill
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
Maximum flow rate (100 l/min)
Max. test pressure on the heating
water side
Heat generator tested at the factory
Minimum system pressure
Safety valve
System pressure
5.13

Checking the pH value

Chemical reactions can change the pH level.
► Check pH level 8 to 12 weeks after commissioning.
► Compare value
pH level is within the specified range:
► no measures required.
pH level is not within the specified range:
► implement measures.
► Add alkalising additives.
5.14

Control modules

The control modules are used to set or display specific 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.
46 | WOLF GmbH
(4.3.2 Heating water).
(Table 4.3 Electrical conductivity and water
Unit Value Measures
L/h 6,000 -
bar 4 -
bar 4.5 -
bar 1.0 -
bar 3 ► Close the shut-off valves in the heating
circuit to the heat generator
bar < 1.5 ► Top up with water.
hardness).
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