Page No 24 Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B
C
Pressing the
SELECT
button again will display the heat
setting eg.
Engineers settings
To turn on the engineers settings press and hold the
+
button until the display goes blank then press the
SELECT
button. The display unit will now display
’Eng’ briefly.
This will disappear after a period of 10 minutes of inactivity
on the keypad.
On pressing the
SELECT
button again, the display unit
now works in the same way as standard for the fan and
heat settings. The next press of
SELECT
will advance to
the ‘door link’ settings if only one air curtain is connected,
or ‘link group interlocks’ if more than one air curtain is
connected.
Door link settings
Two settings are available for use when the door link circuit
terminals are open circuit (PCB link removed). The first of
these is displayed as:
‘1’ is the Air Curtain address and ‘d2’ denotes fan speed 2.
Press the
+
or
-
buttons to increase/decrease the desired
setting between d0, 1, 2, or 3.
The second is displayed as:
‘1’ is the address for the Air Curtain and ‘t1’ denotes heat
setting 1. Press the
+
or
-
buttons to increase/decrease the
desired setting between t0, 1, 2 or 3. where 0 is heat off.
1 = 5
O
C
2 = 10
O
C
3 = 15
O
C
Pressing the
SELECT
button again advances to the link
group interlock settings.
Link-group interlock
If more than one Air Curtain is connected to the display,
then there are two sets of interlocks available to enable a
single Air Curtain in a group to be the ‘master’ controller
based on links used.
‘1’ is the Air Curtain address and ‘C0’ is the default setting
(no interlock set). Press the
+
or
-
buttons to increase/
decrease the desired setting between C0, or 1-7 (see Table
below). If the Air Curtain is set to eg.
This denotes that Air Curtain ‘1’ is set to be the master
for door and BMS interlocks. If interrogated all other Air
Curtains will then display eg.
This denotes a unit that is not the master.
To set more than one interlock, add the appropriate
numbers together, eg. ‘C3’ above works on timer and
door interlocks.
CAUTION
If a controller is not the master, all three interlock
links must be in place.
All controllers
This setting can be accessed from the engineers settings
whilst the external temperature indication is showing.
This is displayed as:
This allows a single group of settings to be copied to all
controllers in a network. Individual settings can still be
used at a later date if required.
External temperature
Display will show eg:
“C” interlocks setting
Effect
1
Timer/BMS interlock
2
Door interlock
4
Thermostat interlock
“L interlocks setting
Effect
1
Not used
2
Not used
4
Block filter interlock
