Carrier Atmosphera 42EM series - 7 - Technical Specifications; 7.1 Valve Specifications

24
7 - TECHNICAL SPECIFICATIONS
7.1 - Valves
It should be noted that the valve body is the same for whatever
controller option is chosen.
7.1.1 - Electrothermal actuator (on/off)
This ON/OFF type 230 V a.c. actuator is used with Carrier
numeric controllers and Carrier electronic room thermostats.
7.1.1.1 - Features
• Compact design, small size
• Long service life
• Easy installation, without tools
• Completely silent operation
• Connection cable included
7.1.1.2 - Operation
Linear movement is provided by the expansion and
contraction of a wax element heated by an electrical resistor.
7.1.1.3 - Specifications
24 V a.c. actuator
Power supply 230 V a.c. (±15%)
1 ph - 50 Hz
Activating current 0.7 A
Holding current 0.013 A
Power 3 W
Maximum travel 8 mm
Operating temperature 0 to 50°C
Degree of protection IP43 if installed vertically
IP40 if installed horizontally
Opening time 4 min.
Closing time Maximum 7 max.
depending on actuator
heating-up time
(ambient temp. 20°C)
Connecting cable 1 m, 2 x 1 mm
2
Dimensions Diameter 50 mm
Height 75 mm
Permitted differential pressure
• 2-way valve (Kvs = 1 or 2.5) 2.5 bar
• 3-way valve (Kvs = 1) 1.5 bar
Logic NF valve, closed if no voltage
7.1.2 - Two-way valve body
11,526,5
1/2”
17
56
6,5
28
M30,0x1,5
Travel
7.1.2.1 - Features of the 1/2” two-way valve
• 1/2” male BSP connection for union nuts
• Straight valve body in bronze with arrow indicating
direction of flow embossed on valve body.
• Stainless steel stem
• Brass valve
• Nominal size 15
• Kvs value: 1
• Fluid: water and glycol solution (max. 40% glycol)
• Temperature: 2-90°C
• Leak rate: 0.02% of Kvs
• Travel: 6.5 mm
• Closing height: 18 mm
• Flow curve: linear
• Nominal pressure: PN 16 bar
7.1.2.2 - Water pressure drop
Refer to chapter 9.4 ‘Water valve pressure drops’.
7.1.3 - Three-way valve body (with integral bypass)
56
40 34 18
1/2”
7.1.3.1 - Features of the 1/2” three-way valve
• 1/2” male BSP connection for union nuts
• Straight valve body in bronze with arrow indicating
direction of flow embossed on valve body.
• Stainless steel stem
• Brass valve
• Nominal size 15
• Kvs value: flow A-AB = 1, bypass B-AB = 0.63
• Fluid: water and glycol solution (max. 40% glycol)
• Temperature: 2-90°C
• Leak rate: 0.02% of Kvs
• Travel: 6.5 mm
• Closing height: 18 mm
• Flow curve: equal percentage A-AB, linear for bypass B-
AB
• Nominal pressure: PN 16 bar
7.1.3.2 - Water pressure drop
Refer to chapter 9.4 ‘Water valve pressure drops’.