1
ENGLISH
BERETTA ACS 35 T LOW ENERGY
The ACS 35 T is an instant domestic hot water mixer. It uses a brazed, stainless steel plate heat exchanger and is ideal
for use in combination with DHW storage cylinders.
Temperature of the hot water delivered to the taps is regulated by the thermostatic mixing of water in the primary circuit.
The primary circuit pump is controlled by a flow switch in the DHW circuit, connected in series to the pump. The product
is equipped with two filling/drain cocks. When the shut-off valves are closed, these can also be used to flush out the heat
exchanger.
A domestic hot water recirculation kit is available for further convenience.
The ACS 35 T instant hot water mixer comes complete with an insulated frame.
Description Qty.
1 DHW mixer in packing 1
2 Instruction manual 1
DESCRIPTION
CONTENTS OF THE KIT
GENERAL SAFETY INFORMATION AND PRECAUTIONS
READ THIS MANUAL THOROUGHLY BEFORE PERFORMING ANY WORK ON THE PRODUCT.
The manufacturer reserves the right to modify the product without notice for the purpose of introducing technical improvements or to facilitate production, installation and positioning. The illustrations in this manual may therefore differ
slightly from the actual product. The safety of the product and the accuracy of the instructions provided are nevertheless
guaranteed.
This manual forms an integral part of the product itself and must be kept in a safe place in order to avoid damage and to
permit rapid consultation throughout the working life of the product.
Ideally, this manual should be kept with the product where it can be consulted whenever needed. The manual should
always accompany the product if sold or transferred to a new owner, or stay with it if the owner moves house and leaves
it behind, so that the next user can consult it.
cod. Doc-0072122 - Rev. 5 (04/2015)
2
GENERAL SAFETY INFORMATION
INSTALLATION
Disconnect the product from the mains power supply before performing any work on it.
The product must be installed in conformity to the laws and standards applicable in the country of installation.
The manufacturer’s responsibility is limited to the supply of the product. The product must be installed in conformity to
applicable standards by suitably qualified persons employed by a company that assumes full responsibility for the completed installation.
The manufacturer cannot be held responsible for consequences deriving from the unauthorised modification of the product or from the use of non-original spare parts.
b
Do not expose the product to the elements. It is not designed for use outdoors
ELECTRICAL CONNECTIONS
The product must be installed and all electrical connections made by suitably qualified personnel in conformity to applicable standards.
The product’s mains power cable must be connected to a fused, two-pole switch (power supply 230 VAC, 50 Hz). The
product must be correctly connected to ground.
b
The product must be connected to the mains power supply via an earth leakage breaker in accordance with applicable standards. Correct functioning is only guaranteed provided the product is used with the pump for which it is
designed. The manufacturer cannot be held responsible for the consequences of improper uses.
WATER CONNECTIONS
On completion of all transport or handling operations, always check the tightness of the water fitting ring nuts.
Take particular care when connecting the product to the water supply. When tightening a fitting, always hold the opposite
fitting steady with a second tool to avoid twisting the copper pipes.
b
The product must be installed, connected and tested by suitably qualified persons, in conformity to applicable
standards and in accordance with the instructions provided in the documentation supplied with it. N.B.: All pipes
must be insulated in conformity to applicable standards.
It is essential to respect the following precautions when using the product:
- Do not touch hot parts of the product such as the water inlet and outlet pipes. Contact with hot parts can cause painful
burns.
- Do not splash water or any other liquid over the product.
- Do not rest any objects on top of the product.
- Do not expose the product to steam from a cooking hob.
- Do not allow children or inexperienced persons to operate the product.
- Do not touch the product when barefoot or wet.
- Do not pull on the electrical cables.
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ENGLISH
1
13
8
4
5
2
2
9
11
10
6
12
3
7
MAIN COMPONENTS
1 Pump
2 Ball valve, DN 20 1" M - 3/4” F
3 Red knob for primary circuit inlet valve
4 Blue knob for primary circuit return valve
5 Blue knob for cold water inlet valve
6 Black knob for non-return valve with DHW outlet temperature sensor
7 Non-return valve
8 Three-way mixer valve with thermostatic actuator, 35 - 65°C
9 Manual bleed valve, 3/8"
10 Brazed, stainless steel, plate heat exchanger with insulation
11 Flow switch
12 Filling/drain cock, 1/2”
13 Union for recirculation kit, 3/4” F
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DESCRIPTION ACS 35 T
Thermal power absorbed with storage cylinder at 50°C and DHW water delivery
at 10-45°C
54 kW
Water draw at 10-45°C with storage cylinder at 50°C 22 l/min
Thermal power absorbed with storage cylinder at 55°C and DHW water delivery
at 10-45°C
68 kW
Water draw at 10-45°C with storage cylinder at 55°C 28 l/min
Thermal power absorbed with storage cylinder at 60°C and DHW water delivery
at 10-40°C
80 kW
Water draw at 10-40°C with storage cylinder at 60°C 38 l/min
Maximum flow-rate primary 1700 l/h
Minimum permissible temperature, DHW circuit 2 °C
Maximum operating temperature 90 °C
Maximum operating pressure, primary circuit 10 bar
Opening pressure, primary circuit non-return valves 28 mbar
Opening pressure, DHW circuit non-return valves 28 mbar
Electrical power consumption 45 W
Power supply voltage 230 V
Power supply frequency 50-60 Hz
Index of protection 54 IP
Net weight 19,1 kg
Water capacity 6,1 l
WATER CIRCUIT
1 2
3
4
5
6
7
7
8
9
EAF
10
11
9
1
1
1 Shut-off valve
2 Three-way mixer valve
3 Modulating pump
4 Heat exchanger
5 Flow switch
6 Valve with temperature sensor
7 Non-return valve
8 Manual bleed valve
9 Manual drain valve
10 Recirculation pump (accessory kit)
11 Temperature sensor
TECHNICAL SPECIFICATIONS
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ENGLISH
Temperatura prelievo accumulo (°C) Temperatura prelievo accumulo (°C)
Temperatura di ingresso AFS 10°C Temperatura di ingresso AFS 20°C
Produzione ACS (l/min)
4540 50 55 60
15
20
25
30
35
40
65 70
45
50
Produzione acqua potabile ACS (l/min)
4540 50 55 60
15
20
25
30
35
40
65 70
45
10÷55 °C
20÷55 °C
10÷42 °C
20÷42 °C
10÷45 °C
20÷45 °C
20÷48 °C
10÷48 °C
10÷50 °C
20÷50 °C
Domestic hot water production graph
NB: Correct functioning of the product is only guaranteed if the primary circuit inlet temperature is at least 5°C higher
than the DHW setpoint.
DHW ow rate (l/min)
DHW ow rate (l/min)
Temperature of water from storage cylinder (°C) Temperature of water from storage cylinder (°C)
DCW inlet temperature 10°C DCW inlet temperature 20°C
Graco produzione acqua calda sanitaria
0,1
0,2
0,4
0,6
0,8
1
124681020406080 100
∆P (kPa)
m
3
/h
2
4
6
8
10
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