18
4 - PRE-START-UP
4.1 - System checkout
When the installation is complete, follow the system checkout
procedure outlined below before starting up the system. Be sure:
1.
Voltage is within the utilisation range specifications of the
unit compressor and fan motor and voltage is balanced for
3-phase units.
2.
Fuses, breakers and wire are correct size.
3.
Low voltage wiring is complete.
4.
Piping and system flushing is complete.
5.
Air is purged from closed loop system.
6.
System is balanced as required. Monitor if necessary.
7.
Isolation valves are open.
8.
Water control valves or loop pumps are wired.
9.
Condensate line is open and correctly pitched.
10. Transformer switched to lower voltage tap if necessary.
11. Blower rotates freely - shipping support is removed.
12. Blower speed is on correct setting.
13. Air filter is clean and in position.
14. Service/access panels are in place.
15. Return air temperature is between 4.4 to 26.7
°
C heating
and 10 to 43.3
°
C cooling.
16. Air coil is clean.
17. Control field selected settings are correct.
4.1.1 - Air coil
To obtain maximum performance, clean the air coil before
starting the unit. A 10% solution of dishwashing detergent and
water is recommended for both sides of the coil. Rinse thoroughly
with water.
5 - FIELD SELECTABLE INPUTS
Jumpers and DIP (dual in-line package) switches on the control
board are used to customise unit operation and can be configured
in the field.
IMPORTANT: Jumpers and DIP switches should only be
clipped when power to control board has been turned off.
5.1 - Complete C control jumper settings (see Figs. 9
and 10)
Water coil freeze protection (FP1) limit setting - Select jumper 3
(JW3-FP1 low temp.) to choose FP1 limit of -12.2
°
C or -1.1
°
C.
To select -1.1
°
C as the limit, DO NOT clip the jumper. To select
-12.2
°
C as the limit, clip the jumper.
Air coil freeze protection (FP2) limit setting - Select jumper 2
(JW2-FP2 low temp.) to choose FP2 limit of -12.2
°
C or -1.1
°
C.
To select -1.1
°
C as the limit, DO NOT clip the jumper. To select
-12.2
°
C as the limit, clip the jumper.
Alarm relay setting - Select jumper 1 (JW1-AL2 dry) for con-
necting alarm relay terminal (AL2) to 24 VAC (R) or to remain
as a dry contact (no connection). To connect AL2 to R, do not
clip the jumper. To set as dry contact, clip the jumper.
5.2 - Complete C control DIP switches
The Complete C control has 1 DIP switch block with five
switches (see Figs. 9 and 10).
Performance Monitor (PM) - DIP switch 1 will enable or disable
this feature. To enable the PM, set the switch to ON. To disable
the PM, set the switch to OFF.
Stage 2 - DIP switch 2 will enable or disable compressor delay.
Set DIP switch to OFF for stage 2 in which the compressor will
have a 3-second delay before energizing.
Switches 3 and 4 - Not used.
1 or 3 tries - DIP switch 5 provides selection of whether there
are 1 or 3 tries for FP1 and FP2. This only applies to FP1 and
FP2, and not to any other faults. Set DIP switch 5 to ON for 1
try or to OFF for 3 tries.
NOTE: The alarm relay will not cycle during Test mode if
switch is set to OFF, stage 2.
5.3 - Deluxe D control jumper settings (see Figs. 11
and 12)
Water coil freeze protection (FP1) limit setting - Select jumper 3
(JW3-FP1 low temp.) to choose FP1 limit of -12.2
°
C or -1.1
°
C.
To select -1.1
°
C as the limit, DO NOT clip the jumper. To select
-12.2
°
C as the limit, clip the jumper.
Air coil freeze protection (FP2) limit setting - Select jumper 2
(JW2-FP2 low temp.) to choose FP2 limit of -12.2
°
C or -1.1
°
C.
To select -1.1
°
C as the limit, DO NOT clip the jumper. To select
-12.2
°
C as the limit, clip the jumper.
