Reznor, Guardian GB GR and GS, Installation Manual, EN 2021-08, D301214 Iss D Page No 19
I
Standard and high capacity fan and heat settings
All units are supplied as standard capacity.
All units have fans capable of providing standard and
high capacity air duties (speeds Medium and High)
which are controlled via the program panel supplied
with every unit.
Electrically heated units provide standard and high
capacity heating outputs. These settings can be
quickly changed from standard to high capacity on
site by the installation engineer.
Ensure the supply cables are adequate
for the higher loading with the high
capacity settings of the fans. See
technical data on page 6
Fan speed setting
The fan speed setting can be modified via the
display panel under the engineer set up program
as described on page 28.
Ambient and LPHW model
The Ambient models have no heat elements, and the
LPHW models have 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 manner 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 21
Figure 19 Heat capacity jumpers factory setting
(no jumpers fitted)
Figure 19.2 Heat capacity jumper pack part
number 1026901
Figure 19.1 Heat capacity jumpers
HIGH capacity (jumpers fitted)
