then the coil face velocity should be limited
to be 2.5 m/s or less (refer Air Handling
graph in Technical Data pamphlet).
High humidity levels can occur in tropical or
subtropical conditions, and/or when heavily
moisture laden fresh air is introduced. Select
a fan speed that avoids water carry-over
problems.
In a free blow or low resistance application,
beware of exceeding the fan motor's full
load amp limit (refer wiring diagram).
The indoor air fan motor is fitted with
a factory set adjustable pitch pulley.
Instructions for the adjustment of pulleys is
included on the back page of the supplied
Commissioning Sheet. One revolution of
adjustment is equal to approx. 7% change in
air volume flow rate.
UNIT CONTROLLER (UC6)
The Unit Controller provides system
protection functions such as coil frost
protection, de-icing, high head pressure and
low suction pressure cut-out.
It also protects against rapid cycling of the
compressor(s) and loss of refrigerant.
Various methods of head pressure control
(or limiting) are employed in temperzone
OPA 1370RKTM
DIMENSIONS (mm)
Not to Scale
OPA 1370RKTM01 – Horizontal Supply & Return Air
PROJECTION
Note : A 2 m clearance
is required above the
exhaust air fans
Net Weight 2297 kg
units. The particular method used varies
from model to model, but is also handled by
the Unit Controller. In combination, these
features deliver optimised performance
across a wide operating temperature range.
Refer to UC6 Controller label on the unit for
operation & fault diagnostics information.
Many operating status conditions can be
determined, without gauges, simply by using
the UC6 Service Interface graphical display
supplied with the unit.
MAINTENANCE
Monthly
1. Check air filters, if fitted, and vacuum or
wash clean as necessary.
2. Check condensate drain for free
drainage.
3. Check compressor compartment for oil
stains indicating refrigerant leaks.
Three Monthly
(or every 1200 hrs of operation)
Check the indoor unit's fan belt tension and
adjust if necessary.
Six Monthly
1. Check the tightness of electrical
connections.
2. Check the tightness of all fans, motor
mountings, pulleys and belt tension.
3. Check suction and discharge operating
pressures. (Using the UC6 Service
Interface avoids fitting and removing
gauges with consequential refrigerant
loss.)
4. Replace indoor air filters (if fitted).
5. Check condensate drain for free drainage.
Yearly
1. Check all refrigerant piping for chafing
and vibration.
2. Check the operation of electric heaters,
if fitted.
3. Check air supply at all diffusers.
4. Check for excessive noise and vibration
and correct as necessary.
5. Check for insulation and duct damage
and repair as necessary.
6. Remove lint and dust accumulation from
outdoor coil fins.
7. Touch up any paintwork damage to
prevent corrosion.
POINT LOADS (kg)
U V W X Y Z
430 347 262 406 419 433
SUPPLY
AIR
RETURN
AIR
280
2330
OVERALL
1000 MIN. CLEARANCE
1000 MIN. CLEARANCE
DRAIN
1
1
/
2
" BSP
MALE
1000 MIN. CLEARANCE
2425 OA
FAN
ACCESS
DOOR
2260
MOUNTING
CENTRES
4668 OA
2150 CENTRES
184
2150 CENTRES
184
956
755
558
615
225
FILTER
ACCESS PANEL
OPTIONAL
WEATHER
HOOD
2000 MIN. CLEARANCE
100
ELECTRICAL
ACCESS
DOOR
ELECTRICAL
ACCESS
DOOR
1710
OUTDOOR
AIR FLOW
OUTDOOR
AIR FLOW
380
U
V
W
Z
Y
X
690
230
NOTE
The manufacturer reserves the right to
make changes in specifications at any time
without notice or obligation. Certified data is
available on request.
This pamphlet replaces the previous
issue no.
3930
dated
07/17
.
Wiring revisions - K.
