reflex ’variomat’
Initial start-up
18
Example:
Bleed screws
’variomat 2-2/60’
The following information applies to all ’variomat’ systems with VG basic vessel and/or
one or more VF secondary vessels (expansion vessels).
Important: The VG and VF vessels must be empty for setting of the ’variomat’
controller. Auto-zeroing of the level gauge must therefore be performed before
the vessels are filled (see start routine/customer menu).
Filling with a hose using the filling and draining tap (17) on the vessel.
This variant is recommended and useful if the automatic water make-up facility of the
’variomat’ has not yet been connected on the water side.
To do this, connect a water hose from the water supply to the filling and draining tap
(17) on the vessel. Open the protected shut-offs between the control unit and the vessel
(factory setting: open).
Prerequisite: The VG basic vessel of the ’variomat’ is filled (see abovementioned
point) and protected ball valves (21) are open (factory setting: open).
Loosen the bleed screw (9) of the pressure-maintaining pump and bleed the pump
until water containing no bubbles runs out. Tighten the bleed screw again and check
for watertightness. For ’variomat 2-2’, repeat procedure for second pump.
It may be necessary to repeat this process several times if the delivery performance
of the pump/pumps remains poor.
Caution must be exercised at high temperatures!
Note the general safety instructions!
stop
hand
Switch on the controller (→ p. 16) and set it to “Stop”
operating mode. (This is used to show the water level in the
vessel.) The display should now be showing “0%”.
Open the filling and draining tap (24) and fill the vessel:
– Heating system approx. 30%
– Cooling and air conditioning system approx. 50%
0% 2.1 bar
Stop
30% 2.,1 bar
Stop
24
12
Filling with the water make-up solenoid valve
Open the water make-up solenoid valve in manual mode and fill the vessel (→ p. 20).
1.
2.
Filling the vessels and control unit
Bleeding the pumps
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