Page No 18 Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B
I
Standard and high capacity fan and heat settings
All units are supplied as standard capacity
All units have fans capable of providing standard &
high capacity air duties (speeds Medium and High)
which are controlled via the program panel supplied
with every unit.
Electrically heated units provide standard & high
capacity heating outputs.
These settings can be quickly changed from standard
to high capacity on site by the installation engineer.
Fan speed setting
On the Program panel during normal operation
mode the display is dimmed.
Pressing the
SELECT
button, will put the panel
into active mode. If no button is pressed for several
seconds the display reverts to normal mode.
Once the display becomes illuminated press the
SELECT
button once.
Display shows the fan speed. (default is F0)
Press
+
to increase fan speed.
Press
–
to decrease fan speed.
Three speeds and an ‘off’ setting are available:
[0 F1]
= Speed 1 (Low)
[0 F2]
= Speed 2 (Medium-Standard)
[0 F3]
= Speed 3 (High)
[0 F0]
= Fan off
Ensure the supply cables are adequate
for the higher loading with the high
capacity settings of the fans. See
technical data on page 6
Ambient and LPHW model
The Ambient models have no heat elements, and the
LPHW models has a coil which the capacity cannot
be controlled by the internal circuit board, therefore
only the fan capacity can be changed to suit site
requirements.
This is achieved by altering the fan speed setting in
the program display.
Note
: The LPHW heat output can be controlled
via a 3rd party thermostat and valve connected
to the heat network control system.
Electrically heated model
On the electrically heated models the fan capacity
can be adjusted in the same as the ambient by
setting the fan speed to F1, F2 or F3
The heat capacity can be changed by fitting the
jumpers E1, E2 and E3 in to the installers terminal
block 1a to 6a see wiring diagram on page 20
Figure 19 Heat capacity jumpers factory setting
(no jumpers fitted)
Figure 19.1 Heat capacity jumpers HIGH
capacity (jumpers fitted)
Figure 19.2 Heat capacity jumper pack part
number 1026901
0 F1
0 F2
0 F3
0 F0
