Caleffi solar SOLARINCAL-T 262 Series Guide

S lar st rage-t -b iler therm static c nnecti n kit
H0000850
www.caleffi.com
262 series SOLARINCAL-T
263 series SOLARINCAL-T Plus
Installation
Before installing a kit with mixing valve, make sure the system’s operating parameters fall within the mixing valve’s working parameters, for example
in terms of supply temperature and pressure etc..
he kit with mixing valve must be installed by a qualified technician in accordance with established legislation and the instructions given in this
manual.
he system in which the kit with mixing valve is going to be installed must be flushed and cleaned to remove any dirt that may have accumulated
during installation. Failure to remove impurities may affect valve performance and void the manufacturer’s warranty.
In case of highly aggressive water, it must be treated before entering the kit with mixing valve.
It is essential that access to the valve is not obstructed, in order to allow maintenance to the valve or fittings if required. he pipes must not be used
to support the weight of the valve
During the installation, observe all current legislation regarding the maximum distance between the valve outlet and each user taps.
he kit with mixing valve can be installed in any position, whether vertical or horizontal.
he hot and cold water inlets to the valve must be connected as shown on the valve body itself.
he thermostatic mixing valves must be installed complete with shut-off valves, strainers and check valves at the hot and cold water inlets.
he shut off valves are required to enable the valve to be isolated for maintenance.
he strainers are essential to prevent impurities from entering the mixing valve.
he check valves are necessary to prevent undesired circulation and backflow.
he kit with mixing valve is supplied complete with strainers and check valves at the hot and cold water inlets.
If the kit with mixing valve is not installed according to these instructions, it may operate incorrectly and endanger the user.
Installation diagram Installation ositions
he kits can be installed in any position, vertically or horizontally.
An installation close to the boiler is recommended.
Bracketing Anti-scald safety function
In case of hot or cold
water supply failure at
the inlet, the obturator
shuts off the water flow, thus
closing the mixed water oulet.
his performance is guaranteed
only when there
is a minimum temperature
difference between the inlet hot
water and the mixed water
outlet of
10°C.
INSTRUCTIONS FOR INSTALLATION, COMMISSIONING AND MAINTENANCE
262 series
263 series
© Copyright 2016 Caleffi

Commissioning
After installation, the mixing valve must be tested and commissioned by an authorised technician in
accordance with the procedure given below and as specified by current applicable legislation.
he following instructions must be read and understood before commissioning the mixing valve of Caleffi 262
and 263 series kits.
If there are any aspects of the installation or the system which do not correspond to the specified
requirements, the valve must not be commissioned until the installation/system is made to conform to the
said requirements.
1) Make sure that the system is clean and free from dirt before commissioning the thermostatic mixing valve.
2) It is recommended to set the mixed water temperature with a calibrated digital thermometer. he valve
must be commissioned by measuring the mixed water temperature at the user tap outlet.
3) Depending on the intended use and associated risk, the oulet temperature must be adjusted so as to
avoid any danger for the user and comply with applicable legislation.
4) he temperature at the valve outlet must be adjusted by taking into account any potential fluctuations caused by simultaneous water drawing off.
hese conditions must be stabilised before the valve is commissioned.
5) he temperature may be adjusted using the control knob on the mixing valve.
a) Adjust the temperature of the mixed water to the desired value.
b) Measure and record the temperature at the cold and hot water inlets.
c) Measure and record the temperature of the water at the tap outlet at the lowest and highest flow rate.
d) Perform a test of the anti-scald thermal shut-off function.
Close the shut-off valve at the cold water inlet and check the mixed water outlet. he flow rate at the outlet should quickly drop to zero.
e) Measure and record the maximum mixed water temperature. he temperature may not exceed the values permitted in any applicable legislation
or code of practice.
f) Restore the cold water inlet supply and measure the water temperature at the outlet after it has stabilized. he final temperature measured in
this test may not exceed the permitted values ±2°C.
It is recommended to register all the above information in the commissioning report and updated in the maintenance report whenever the valve is
worked on.
Assembly
1. Remove the protective cover.
2. Connect the system connection pipes to the kit with mixing valve;
3. Fit the protection cover onto the kit with mixing valve;
4. Connect the pipes to the boiler.
Factory configurations
Diverter valve: 45°C
hermostatic control device: 30°C
Tem erature set oint adjustment
he diverter valve is factory set to operate at a temperature of 45°C, diverting water to the boiler if the
temperature is lower than this setpoint value. he set temperature value is fixed using a locking ring.
he 263 series thermostatic control device is factory set and fixed to keep constantly at 30°C the
temperature of the water at the boiler inlet.
234

Maintenance
While in service, tests should be carried out to monitor regularly the performance of the mixing valve, since any loss of performance may indicate
the need for maintenance of the valve and/or the system. During these tests, if the temperature of the mixed water is found to have changed
significantly compared with previous tests, we recommend referring to the sections on installation and commissioning and carrying out maintenance.
Run the following checks at least every 12 months or more frequently if required, to maintain the optimum performance of the valve.
With reference to the exploded view:
1) In the mixing valve of the 262-263 series kits, the strainers at the hot and cold water inlets can be removed for cleaning by unscrewing the union
nut.
2) he check valves can be inspected as explained in point 1 to make sure that they are perfectly operational and watertight.
Cauti n: The check valve at the s lar inlet (black c l ur) is specific f r high temperature applicati ns, theref re f r n reas n it can
be swapped with the check valve at the c ld water inlet.
3) Internal components can be cleaned from limescale deposit by immersing them in descaling fluid. Check the O-rings and lubricate them with a
suitable lubricant.
4) Once component maintenance is complete, repeat the commissioning procedure.
compression end
version
2
3
4
5
6
1
7
3a
98
2
3
4
5
6
1
3a
79 8
11
10
8
10
8
262 series 263 series
1
2
3
3a
Knob
Headwork
O-Ring seal
O-Ring seal
4
5
6
7
hermostat with obturator
Flow conveyor
Spring
Valve body
8
9
10
11
Strainer
Check valve at cold water inlet
Check valve at solar inlet
Check valve at the inlet from boiler to be
applied during installation

Safety
· he group with thermostatic mixing valve must be installed by a qualified technician in accordance with national regulations and/or
local requirements.
· If the group with mixing valve is not installed, commissioned and maintained correctly in accordance with the instructions in this
manual, it may not work properly and may put the user in danger.
· Make sure that all connection fittings are watertight.
· When realising water connections, make sure that the pipework connected to the group with mixing valve is not subjected to excessive mechanical
stress. Over time this may result in breakages, with consequent water leaks which could harm people and/or damage property.
· Water temperatures higher than 50°C may cause severe burns. When installing, commissioning and maintaining the group with thermostatic mixing
valve, take the necessary precautions so that these temperatures will not be hazardous for people.
· In the case of particularly aggressive water, water treatment must be provided upstream of the inlet to the group with thermostatic mixing valve,
according to current specifications. If they are not provided the valve may be damaged and may not work properly.
· he coupling of the kit with mixing valve and the boiler must be made taking in consideration the operational characteristics of both units.
An uncorrect choice could compromise the operation of the boiler and/or system.
Troubleshooting
In normal operating conditions, the unit provides high performance. However, in special circumstances when our maintenance schedule is not
observed, the following problems may arise:
Problem
Hot water supplied to cold
water taps
Mixed water temperature
fluctuations
Incorrect flow rate at the valve
outlet
No flow at the valve outlet
Anti-scald function not
available when the valve is
tested
Cause
a)
Check valves at the inlets not operating correctly
and watertightness not guaranteed
a) Incorrect inlet water temperatures
b) Inlet water supply failure
c) Uncorrect commissioning
a) Insufficient water supply
b) Inlet water temperature/pressure fluctuations
c) Adverse conditions due to other water draw off
points in the system
a) In-line strainers obstructed
b) Insufficient supply pressure
c) Dirt obstructing water flow through the valve
a) Installation not compliant with recommendations
b) Minimum temperature difference not reached
e) Inner mechanism obstructed by dirt
Solution
• Replace damaged check valves
• Restore inlet conditions within kit
specification range
• Stabilise supply conditions at the inlet
• Clean strainers
• Restore supply conditions
• Remove dirt/scale from the valve
• Follow installation instructions
• Increase hot water temperature
• Remove dirt/scale from the valve
Leave this manual as a reference guide f r the user