Solar Thermal Information
65
Alarm module
AM1
Function
Product range
Code NA15009 AM1 alarm module with red Flash-LED light and one dry contact output relay
Technical specifications
Dimensions
CALEFFI
A
2
1/2”
B
4
3/8”
C
2 5/8”
D
1 1/2
Code
NA15009
Weight (lb)
0.3
A
B
C
D
Data connections
Connection terminals
VBUS VBUS
RELAY
Data communication example
Relay output
Optional
Datalogger
iSolar
Alarm
Operating sequence
The AM1 alarm module is designed to signal system failures. It is connected to
the VBus data connection of the iSolar controllers and issues an optical signal
via the red Flash-LED if a failure has occurred. The AM1 also has a dry contact
output relay, which can be connected to an additional signaling device or to a
building management system.Thus, a multi-modal error message can be issued
in the case of a system failure.
Depending on which iSolar controller and the sensors connected, different fault
conditions can be signaled. For example sensor failures, excess system
temperature, excess collector or tank temperature, as well as errors in the flow
rate, such as a dry run of the pump. The AM1 ensures that occurring failures can
be immediately recognized and repaired, even if the system and the controller
are difficult to access or located in a remote place.
The AM1 is designed for easy connection
to all iSolar controllers through the VBus
data connection. Connect VBus wires to
the terminals marked “VBus” with either
polarity. The bus wire can be extended
with two conductor wire (bell wire).The
wire must be at least 20 AWG (0.5 mm
2
) and can be extended up to
150 feet. To the “Relay” terminals, a load can be connected with either
polarity.
When the AM1 is operational, the LED will glow continuously to signal
operational readiness. If the LED does not glow, check the connection
of the device. The AM1 receives the VBus data packets of the device
connected. In the case of a failure signal, the integrated Flash-LED
flashes and the AM1 activates the dry contact output relay. The relay
can be used to connect an additional signaling device, or to a building
management system.
Housing plastic: PC-2207 UV
Protection type: Indoor only
Ambient temperature: -15 ... 160ºF (-25 ... 70ºC)
Mounting: wall
Display: 1 Red LED
Interface: VBus data connection
Power supply: VBus
Outputs: 1 dry contact relay
Switching relay capacities: 1 A, 24V AC/DC
Agency approvals CE
CALEFFI
Flexible stainless steel insulated piping
SolarFlex
NA3500
Function
SolarFlex is a system solution with pre-insulated flow and return
pipes for solar hot water heating systems used to connect the solar
collector with the storage tank in an easy, quick and professional
way. It optimizes thermal efficiency of the entire system. The pre-
insulation solution of two flexible stainless steel pipes inside two
EPDM closed cell insulation and the integrated sensor cable, saves
time and reduces cost of installation. SolarFlex is packaged in a 50-
foot continuous coil with a complete range of accessories to ensure
a smoothand secure installation.
General
• Easy to install, enabling pipes to be run without using a torch
in confined spaces or on the roof.
• Ensures a leak-free installation.
• Easy to separate, without damaging the tubes.
• External copolymer foil protects against UV radiation
and mechanical strain.
• Identification mark for flow and return.
• Meets highest requirements for modern solar heating systems.
• Pre-insulated feed and return pipes can be joined easily
without special tools.
Technical specifications
Materials:
- pipe: two corrugated stainless steel 316L
- insulation: two closed cell elastomer UV resistance EPDM
- outer cover: UV resistant polyolefin copolymer foil
Insulation thickness: 5/8 inch (16mm)
Thermal conductivity: 0.215 BTU-in/hr-ft
2
-°F (0.031 W/mK)
Thermal resistance: R-4.2
Max. working pressure: 150 psi (10 bar)
Max. fluid temperature: 350ºF (175ºC)
Min. surface temperature: -60ºF (-50ºC)
Length per coil: 50 feet (15m)
Fluid capacity per foot: 1/2" - 0.0219 gallons (0.08 liters)
3/4" - 0.0346 gallons (0.13 liters)
1" - 0.0509 gallons (0.19 liters)
Min. bending radius: 5 inch (130mm)
Pessure loss:
Approx. 25% more than in a comparable smooth pipe
Flammability: Class VO
Flame spread/smoke density 25/50
Agency approvals: ASTM D 635
ASTM C 177
C
AB C D
1" 1 - 1/4 " 4 -
7/16
"
2-
1/2
"
Code
1/ 2" 11/16 " 4 " 2 "
NA3520 - 15
NA3560 - 15
Weight (lb/f)
3/4" 15/16 " 4 -
3/8
"
2-
1/8
"
NA3540 -15
0.5
0.4
0.7
D
A
B
Product range
NA3520-15 1/2" SolarFlex pipe 50' coil including (2) double nipples, (4) union nuts, 4 segment rings and 4 washers
NA3540-15 3/4" SolarFlex pipe 50' coil including (2) double nipples, (4) union nuts, 4 segment rings and 4 washers
NA3540- B 3/4" SolarFlex pipe bulk cut to length up to 164 foot. Without connection fittings.
NA3560-15 1" SolarFlex pipe 50' coil including (2) double nipples, (4) union nuts, 4 segment rings and 4 washers
Dimensions