Watts FRG3020-W Manuel De Montage Et D'utilisation page 8

2. INSTRUCTIONS, SYMBOLS AND ABBREVIATIONS
Instructions in these documents use symbols and abbreviations for ease of understanding as follows:

Reference to further documentation
Important information and tips on use
Hazard warning or important point on operation
Piping closed
Piping open, in flow direction
AG Male thread
EUKO Male thread with euro cone
FBH Floor heating
FH Panel heating
FH/K Panel heating/cooling
FK Panel cooling
FRG Panel control set
3. SAFETY INSTRUCTIONS
Before starting work pull out the mains plug and ensure there is no power supply to the unit.
All installation and wiring work on the control unit must only be carried out when it is switched off and no
power is connected.
Connection and commissioning of the unit must only be carried out by trained personnel. The applicable
safety regulations, in particular VDE 0100, must be observed.
The control unit is not spray proof or protected against dripping water. Therefore the unit must be installed in a dry
location.
4. ASSEMBLY
1: Supply panel heating/cooling (1" union nut)
2: Return panel heating/cooling (1" union nut)
3: Primary supply (1" male thread)
4: Primary return (1" male thread)
5: Circulating pump
6: 3-point actuator
7: 3-way mixing valve
8: Check valve (RV)
9: Supply temperature thermometer
10: Temperature limiter (optional)
11: Eccentric thread with interface with supply
temperature sensor
12: Interface return temperature sensor (optional)
13: Climate controller CC-HC
14: Outside temperature sensor
5. INSTALLATION AND ELECTRICAL CONNECTION
5.1. I
NSTALLATION OF THE MANIFOLD UNIT
The control unit is designed for direct mounting on a heating circuit manifold with a flat gasket 1" (male thread) and a
centre-to-centre dimension of 210 mm.
When installing ensure that the pump cable, temperature limiter and the sensor are not damaged or buckled. Any
tensile stress in the cables must also be avoided. Correct connection of both supply and return must be ensured
(Fig. 2 and 3.1 - 3.4).
MuB_10026618_FRG3020-W_(EN)_2010-08-16.docx
HK Heating circuit unit
HKM Heating circuit unit with mixer
HKV Heating circuit manifold
IG Female thread
MuB Installation /operating instructions
RV Check valve
SBE Flushing, filling, draining devices
Subject to technical change without notice
SKB
TB
UM
UWP
WDS
WE
WP
ca. 270 mm
10
14
86
9
5
6
7
13
3
EN
Gravity flow stop/gravity break
Temperature limiter
Union nut
Circulating pump
Heat insulation box
Heat generator
Heat pump
11
1
12
8
2
4
Fig. 2
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