EPH Controls RF1A-OT User manual

CAUTION!
Before commencing any work on the electrical
mains. None of the 230V connections must be live until the
installation has been completed and the housing is closed.
permitted to open the terminal box.
There are parts that carry mains voltage behind the cover. The
terminal box must not be left unsupervised when open.
(Prevent non specialists and especially children from gaining
access to it.)
Ensure that this wireless enabled receiver is installed 1 metre
from any metalic object, television, radio or wireless internet
transmitter.
Operating Instructions
Page 1 of 2
RF1A-OT - Wireless Receiver
with RFRP-HW-OT
RF1A-OT - Wireless Receiver
with RFRP-HW-OT
3. Installation
1.
2. Mounting
Contents
2. Mounting
3. Installation
4. Button / LED description
5. Resetting the RF1A-OT receiver
6. To connect the RFRP-HW-OT thermostat to an
RF1A-OT receiver
7. To disconnect the RFRP-HW-OT thermostat from an
RF1A-OT receiver
Prior to operation, it is neccessary to complete all
required settings described in this section.
4. Button / LED description
Important: Keep this document
The RF1A-OT receiver should be wall mounted in an area within 20
metres distance of the wireless thermostat.
It is important that the receiver is mounted more than 1 metre away from
The receiver should also be installed at least 1metre from any electronic
devices such as radio, TV, microwave or wireless network adaptor.
2. Surface mounting boxes
* If mains voltage output is required, terminals L & 2 must be electricallylinked.
Important:Do not connect Mains Voltage to OpenTherm® terminals.
OFFON
321LN
L
MAINS SUPPLY
N
COM
Power Supply: 200 - 240Vac
50-60Hz
Contact Rating: 250 Vac 10(3)A
Ambient Temp: 0~45°C
Automatic Action: Type 1.C.Q
Class II appliance
Pollution degree: Pollution degree2
Rated Impulse Voltage: Resistance to
voltage surge 2500V; as per EN 60730
IP Rating: IP20
Internal wiring diagram
for RF1A-OT
Slacken the fastening screw on the bottom of the receiver with a philips
screwdriver.
The receiver is hinged and can be opened 180 degrees. Mount the unit as
described in section 2. Wire the unit as described in section 1. Close the
receiver and tighten the fastening screw.
System ON
(Green LED)
Manual override
Connect button
Wireless connect
indicator (Red LED)
Reset button
Manual override: This button will manually override the system.
LED description:
Wireless connect: Once voltage has been applied this button may be
pressed to initialise the pairing process with the wireless thermostat. Once
O T
O T
RF1A-OT On
OT Connection Normal Operation
communicating via RF
ON
Green LED Red LED
Green LED Red LED
Green LED Red LED
Green LED Red LED
RF1A-OT On
RF1A-OT On
OT Communication Error
RF Communication Error
RF Communication Error
OT Communication Error
Normal Operation RF1A On
OFF or ON
OFF or ONConstant Flash
Constant Flash
ON
ON or FlashingOFF
OFF or Flashing
Summary
communicating via RF
OFF
ON
OFF
Constant Flash
Constant Flash
Constant Flash
Constant Flash
OFF
ON
20221005_RF1A_OT_RFRP-HW-OT_Opins_PK
EPH Controls Ireland
[e-mail] www.ephcontrols.com
EPH Controls UK
[e-mail] www.ephcontrols.co.uk

Operating Instructions
Page 2 of 2
RF1A-OT - Wireless Receiver
with RFRP-HW-OT
5. Resetting the RF1A-OT receiver
Press the button located on the side of the receiver. The RF1A-OT
receiver is now reset.
RESET
Press the button on the RF1A-OT receiver.
6. To connect the RFRP-HW-OT thermostat to an RF1A-OT
receiver
Connect
Press the button.
The thermostat will show “nOE”followed by“---”
Once an RF connection has been established the thermostat will show ‘r01’
on the LCD screen.
Press the ‘OK
The thermostat is now connected to the RF1A-OT receiver.
Connect
On the RFRP-HW-OT thermostat:
On the RF1A-OT receiver:
Please note, If you are installing a CP4-HW-OT, the RFRP-HW-OT thermostat
and the RF1A-OT receiver will have a pre-established RF connection so it is
not necessary to carry out the RF connection process below.
Connect
Connect
7. To disconnect the RFRP-HW-OT thermostat from an
RF1A-OT receiver
Press the button.
The thermostat will begin to search through the RF channels.
Press and hold the‘Copy’ button for 10 seconds.
‘Adr’will appear on the screen of the thermostat.
Press the ‘OK’ button twice to complete the unpairing process.
The thermostat RFRP-HW-OT is now disconnected from the receiver
RF1A-OT.
This can be done from either the thermostat or the receiver.
7.1 On the RFRP-HW-OT thermostat:
7.2 On the RF1A-OT receiver:
Red & green lights if using as a hub receiver.
The RF connection is now cleared.
20221005_RF1A_OT_RFRP-HW-OT_Opins_PK
EPH Controls Ireland
[e-mail] www.ephcontrols.com
EPH Controls UK
[e-mail] www.ephcontrols.co.uk