Winterwarm TR - 5 Functioning of the Unit; General; Burner Cycle; Delta-T-Regulation (Temperature Controlled De-Stratification Fan)

Instructions condensing Air heaters type XR version XR-GB-4001-a Page 15/27
- The distance between the brackets should be spread out equally.
• Inside a shaft:
- Check the components on possible damages or blockage..
- Check that the pipe is under the right inclination.
- Mark the flue pipes and fresh air pipes to avoid a mistake.
- Check that the pipes extend minimum 50mm when going through a wall or other obstacle.
- Fix the last element before entering the shaft. If this is an elbow, also the 2nd element
may be fixed.
• ATENTION, every system needs to have at least 1 bracket. The first bracket needs to be within
the first 0,5m from the appliance..
5 Functioning of the unit
5.1 General
The unit can heat as well as ventilate. By using the temperature-sensor on the unit and the one
in the room-thermostat, the temperature-difference between the two in the room is monitored.
Should the difference become higher than a set value, due to the fact that warm air has
accumulated underneath the roof, the system-fan will start and push the warm air down, acting
as a de-stratification fan.
5.2 Burner cycle
The status and burner cycle is showed on the display in the heater
Display
S
t
atus
D
escription
0
Stand
-
by
Standby,
wa
iting for he
at demand
1 Reset Software reset
3
P
re
-
check
Zero position check
pressure switch
4 Pre-purge 30 seconds of pre ventilation from the combustion fan. The
press
ure
swit
ch is checked
.
5
Pre
-
igniti
on
I
gni
tion without opening the gas valve
6 Igniting Ignition (5 sec), gas valve opens
7
Flame check
Check if
the flame is present
8 Burn The heater burns and starts to modulate.
9 Minimum Before the flame stops, the burner will modulate to minimum
power
10
B
urner off
G
as
valve closes,
t
he flame stops
11 Post Purge Burner fan purges with fresh air
Syst
em
fan
c
ools t
he heat exchanger
Minimum burn time 4 minutes!
The heater will always burn minimum 4 minutes, even if the heat demand stops. This to avoid
an unnecessary large amount of start and stops.
The heater will try 2 times to ignite before it stops and gives an error.
5.3 Delta-T-regulation (temperature controlled de-stratification fan)
In case there is no heat demand, the delta-T-regulation will be active.
When the temperature-difference between the sensor on the unit (the NTC) and the sensor in
the thermostat is bigger than the set value (factory setting standard 8°C), the system fan will
start, at a regulated speed, depending on the differential temperature difference. This operation