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Tempering valve for solar and instantaneous applications
© Copyright 2012 Calef fi
Installation, commissioning and servicing instructions
AS 4032.2
C of C 02466
The tempering valve is used to regulate the set
temperature of mixed hot and cold water even when
variations occur in the water supply conditions.
The Caleffi 2522HP series has been specifically
designed
and
manufactured
requirements of "AS 4032.2:2005 Tempering valves
and end-ofline temperature actuated devices".
This particular series of tempering valves has been
developed primarily for installation in solar hot water
systems. These valves are also suitable for use on
instantaneous and general hot water storage systems.
Product code
252212HP:
15 mm (1/2")
252219HP:
20 mm (3/4")
Valves are supplied standard with union connections
at the inlets and include in-line strainers and check
valves.
1
28090.02
2522HP series
to
meet
the
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Related Manuals for Caleffi solar 2522HP Series
Summary of Contents for Caleffi solar 2522HP Series
- Page 1 Installation, commissioning and servicing instructions The tempering valve is used to regulate the set temperature of mixed hot and cold water even when variations occur in the water supply conditions. The Caleffi 2522HP series has been specifically designed manufactured meet requirements of “AS 4032.2:2005 Tempering valves...
- Page 2 Technical data Materials: - valve body: DZR alloy EN 12165 CW602N - regulating spindle: DZR alloy EN 12165 CW602N - internal shutter: - sealing elements: EPDM - cap: Temperature adjustment range: 35–50°C (55°C only under supervision and not within requirements of AS 3500 and AS 4032.2) Temperature set: Must be commissioned on site to achieve desired temperature Temperature control:...
- Page 3 Operation A tempering valve mixes hot and cold water in such a way as to maintain the set temperature of the mixed water at the outlet. A thermostatic element is fully immersed into the mixed water. It then contracts or expands causing movement of the piston, closing either the hot or cold inlets, thus regulating the flow of water entering the valve.
- Page 4 Flow rate graph ∆p (kPa) Ø 15 mm Ø 20 mm G (l/min) Flow rate - Litres per minute Code Ø (mm) Kv (m 252212HP 252219HP Use and flow rate Caleffi series 2522HP tempering valves are typically installed at the hot water heater. In order to maintain the set temperature, the tempering valve must have a minimum flow rate of 4 l/min.
- Page 5 Exploded diagram LOCKING NUT TEMPERATURE ADJUSTMENT SPINDLE VALVE BODY GASKET UNION NUT INSERT CHECK VALVE TAIL PIECE BODY INSERT STRAINER KIT A...
- Page 6 Installation The Caleffi 2522HP series must be installed by a licensed plumber. The installer has a duty of care to ensure that all aspects of the installation comply with the AS/NZS 3500, appropriate Codes of Practice and/or local government requirements.
- Page 7 Application diagrams Solar system SOLAR HOT WATER STORAGE MAINS SUPPLY System without recirculation HOT WATER STORAGE HEATER MAINS SUPPLY System with recirculation HOT WATER STORAGE HEATER MAINS SUPPLY...
- Page 8 The following instructions should be read and understood prior to commissioning the Caleffi 2522HP series valve. If, under any circumstances, there are aspects of the installation/system which do not comply with the requirements or the specifications as laid down, the valve must not be put into service until it does comply.
- Page 9 Temperature adjustment Remove the cap Direction of temperature adjustment Temperature adjustment Lock adjustment spindle with locking nut...
- Page 10 Should the valve still not function correctly, it may be necessary to replace it. As a safety measure, we recommend that the Caleffi 2522HP series is replaced after 5 years service. Contact Agent Service Department for details and advice.
- Page 11 Fault finding Under normal operating conditions the Caleffi 2522HP series tempering valve will provide a very high level of performance. However, in some circumstances, where our maintenance plan is not followed, the following problems may arise. Symptom Cause Corrective action...
- Page 12 Safety · Tempering valves must only be installed by a licensed plumber. · A minimum temperature differential of 10°C is required between the hot water inlet and the mixed water outlet to ensure correct operation of the thermal shutoff feature. ·...
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