Danfoss FH-RT Wireless Room Thermostat Installation Guide
If no signal is received from one or more thermostats, the corresponding
LEDs on the indicator panel remain lit.
If after a further 8 hours the base unit has still not received a signal from the
thermostat, an acoustic alarm begins buzzing.The buzzer can be de-activated
by selecting the alarm “OFF” setting on the base unit (see Fig. 9). The alarm
is reset when a button on the control panel is pressed or when the base unit
receives a signal from the thermostat.
When the required number of thermostats have been checked, press and
hold “MODE”for 3 seconds to return the system to normal mode.
Note: The system returns automatically to normal mode if no buttons are
pressed during a 15-minute period.
5.6 Thermal actuator & pump exercise
This function prevents the manifold valve and circulating pump from
sticking.
5.3 Thermostat test mode
This mode is used to test thermostat transmission.
Using the point of a pencil or similar, press and hold the transmission button
on the front of the thermostat for 3 seconds.
This forces the thermostat to transmit a signal every 7 seconds for 5-6
minutes.
It is activated once yearly. First, all assigned outputs are activated for 5
minutes, and the pump output is then activated for 5 minutes (only if pump
output is installed).
The function can be turned off by switching the EXERCISE switch to the OFF
position. (See Fig. 10).
Then check whether a signal from the thermostat is received by the base
unit at 7 second intervals (the LED indicator for the assigned channel flashes
on receiving a signal).
5.7 NO/NC thermal actuator settings
This function allows“Normally Closed’(N/C) or“Normally Open”(N/O) thermal
actuators to be used.
The test can be terminated by again pressing the thermostat transmission
Type is selected on the ACTUATOR switch (see Fig. 10).
button.
Note: The system returns automatically to normal mode if no buttons are
5.8 “Cooling” mode
pressed during a 5-minute period.
This mode allows thermostat signals to be invertedso that outputs are opened
when the temperature is above the desired temperature and closed when
below and is intended for use in cooling systems.
5.4 Thermal actuator output testing
Thermal actuator output testing is used to check the functioning of the base
unit output relays.
6.0 Boiler and pump interlock setting
Press and hold the “MODE”button for 3 seconds (all LED indicators flash).
As standard, outputs 7 and 8 are set to control thermal actuators.
However, output 7 can also be used to control a boiler via an ON/OFF signal,
and output 8 can be used to control a pump.
The first indicator then begins flashing.
Press “OK” to test the first channel. The LED indicator now flashes rapidly
(on/off at half-second intervals) and a small click can be heard after about 5
seconds indicating that the output has been activated. Press “OK” again to
de-activate the output.
To enable a boiler or pump to be controlled, the system must be configured
as shown in Figs 8 and 9 respectively.
Note: If outputs 7 and 8 are not used for thermal actuators, the following
applies:
Press“MODE”to select the next output to be tested, and repeat the process
described above.
- LED indicators 7 and 8 light up when any other channel requires heat.
The test can be terminated by pressing and holding the “MODE” button for
3 seconds.
Note: The system returns automatically to normal mode if no buttons are
pressed during a 10-minute period.
5.5 Alarm function
This function is initiated automatically in case of communication failure.
If the base unit does not receive a signal from a registered thermostat for 2
hours, the corresponding LED indicator starts flashing. Simultaneously, the
thermal actuator output begins a continuous cycle of 7 minutes’ activation
and 14 minutes’de-activation.
Fig. 7. Switches
Fig. 9. Step 2. Bend left-hand jumper as illustrated.
5
| General | Details |
|---|---|
| Name | Danfoss FH-RT Wireless Room Thermostat Installation Guide |
| Make | Danfoss |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.32 MB |
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