Riello NexPro 300 Plus Solar MR 11 Instruction Manual page 13

Water floW and return Group
This instruction manual is an integral part of the installation and maintenance manual for the complete solar water
heating system. Refer to that manual for GENERAL SAFETY INFORMATION AND PRECAUTIONS.
The WATER FLOW AND RETURN GROUP allows you to connect a solar storage cylinder to a series of solar collectors.
The group allows you to perform flow adjustment, flushing, circuit filling and draining, and pump replacement far more
easily. The compact safety valve group contains, in addition to the safety valve itself, a pressure gauge and a fitting for
connecting a hose to the expansion vessel. The water inlet group also incorporates a non-return valve.
Versions with solar controller can also control the associated solar water heating system.
Description
1 Water flow and return group
2 M8 screws for fixing the kit to a storage cylinder
without foam insulation
3 Self-tapping screws for fixing the kit to a storage
cylinder with foam insulation
4 Washers for fixing the kit to a storage cylinder
with foam insulation
5 Expansion plugs for fixing the kit to a storage
cylinder with foam insulation
6 Solar regulator (if included)
7 Sensors (if included)
8 Pump power cabling
9 PWM cabling
Inside an envelope:
10 Instruction manual
11 Instruction manual for solar controller (if included) 1
12 Spare parts catalogue
13 Logo label *
(*) to be applied after the protective film (P) has been
removed
The kit is packaged in a cardboard box identified by a
label bearing the name of the kit, its code and a product
bar code.
DESCRIPTION
Maximum working pressure
Maximum operating temperature
Dimensions LxHxD
Net weight with insulation
PUMP
Power supply
Electrical current draw (min./max.)
Heat output (min./max.)
DESCRIPTION
CONTENTS
Q.ty
1
2
2
2
2
1
3
1
1
1
1
TECHNICAL SPECIFICATIONS
Solar MR 11 Solar MRS 11
6 6
110 110
271x638x209 271x638x209
7,5 9
230~50 230~50
0,04 / 0,57 0,04 / 0,57
2 / 60 2 / 65
13
9
8
1
6
P
10
11
11
Solar MR 25 Solar MRS 25
6
110
271x638x209 271x638x209
8
230~50
0,04 / 0,57 0,04 / 0,57
2 / 60
5
4
3
2
7
12
6 bar
110 °C
mm
8,5 kg
230~50 V~Hz
A
2 / 65 W