Frico VLSP Series, Installation Manual

Page: 5 / 11

VLSP
12
GB
Measuring
Measuring q
1. Remove any actuator.
2. Connect IMI TA* balancing instrument to
the measuring points.
3. Input the valve type, size and setting and
the actual flow is displayed.
Measuring
D
H
1. Remove any actuator.
2. Close the valve according to “Shut-off”.
3. Bypass the
D
p part by opening the bypass
spindle
≈
1 turn anticlockwise, with a 5 mm
Allen key.
4. Connect IMI TA* balancing instrument to
the measuring points and measure.
Important! Close the bypass spindle after the
measurement is completed.
Leakage rate:
Leakage flow
≤
0,01% of max. q
max
(setting 10)
and correct flow direction.
(Class IV according to EN 60534-4).
Connection:
Male thread according to ISO 228.
Marking
TA, IMI, PN 16, DN and flow direction
arrow. Grey setting wheel: TA-COMPACT-P
and DN. For low flow version also LF.
Application
The regulation and adjustment valve (TAC)
can be used to finely adjust or shut off the
water flow manually. TAC is independent
of the available differential pressure, which
contributes to stable and accurate regulation
(ensures the correct flow to the heater even if
the differential pressure in the rest of the pipe
system changes). The water flow is set using
the gray adjustment knob on the valve.
Functions
• Control
• Pre-setting (max. flow)
• Differential pressure control
• Measuring (
D
H, T, q)
• Shut-off
Noise
In order to avoid noise in the installation
the valve must be correctly installed and the
water de-aerated.
* www.imi-hydronic.com/