Zamil PV036 Installation, Operation & Maintenance Manual - page 5
CONDENSATE DRAIN CONNECTION
•
Use standard PVC pipe with NPT connection for the condensate drain. The plastic drain pan has an internal built-in trap. Accord-
ingly there will be no need for external 'P' trap.
•
Piping has to be sloped away from the unit.
•
Remember to remove the drain hole plug before operating the unit. Avoid bends & elbows.
DUCT CONNECTION
The units can be connected to the ducting in either vertical or horizontal configuration. Just remove the dummy panels and connect
using flexible duct connection. The duct should be properly designed and the drive package should match the required CFM &
corresponding external static pressure.
ELECTRICAL CONTROLS
1. For normal air-conditioning applications
This packaged unit control consists of Systemizer
TM
Microprocessor Based Electronic Control Board, incorporating the following features:
(a) Compressor Lockout. If any of the unit’s safety controls trips due to abnormal conditions the Electronic Controls lockout the
compressor, preventing restart, unless attended by service personnel. The unit can be re-started only by reset of thermostat after
ensuring safe system conditions.
(b) Anti recycle timer for compressor safety in case of accidental manual reset or immediate recycling of thermostat due to load
demand.
(c) Indicator LED lights:
Green
– Power ON.
Red
– Fault indication.
(d) Typical single stage thermostats to be ordered (part number 800-645-31).
2. For communication shelter applications (To be ordered separately)
The set of two PV units (when used for communication shelter applications) is provided with a dedicated control with the following features:
(a) Auto-reset High Pressure Switch: Built in lockout circuit with auto reset. Provides protection to the compressor.
(b) Auto reset Low Pressure Switch: Built in lockout circuit and low-pressure timed bypass circuit.
(c) Microprocessor based electronic board provides the compressor lockout, if any of the unit safety controls trip due to abnormal conditions.
(d) Auto lead/lag controller: The Auto lead/lag controller is a complete control package designed to operate a fully or partially
redundant air conditioning system having two units paired together. It consists of a thermostat and solid state timer with selectable
change-over intervals (typical 7 days). This control unit is factory-wired, tested and mounted in separate enclosure for quick
installation inside the air-conditioned space.
(e) Low ambient control: By using automatic condenser fan speed controls.
CABLE SIZE
•
All wiring should be in accordance with local standards.
•
Before making any connection, check the electric power supply, it must have the same characteristics as what is displayed in the nameplate.
•
For selecting cable size, refer to wire ampacity table at different MCA (Minimum Circuit Amps) provided in unit electrical data, which
is listed as a guideline (see table below).
•
Wiring connection to the unit must have suitable insulation of a minimum temperature of 60
0
C.
MODEL No.
MCA
CONDUCTOR SIZE
AWG - MCM
METRIC - MMSQ
PV036
19.7
14
2.5
PV048
27.2
10
6.0
PV060
32.6
10
6.0
PV048
18.3
14
2.5
PV060
20.0
14
2.5
POWER SUPPLY
208/230V-3Ph-60Hz
LEGEND:
MCA - Minimum Circuit Amps
NOTES:
1. Customer is to select cable size also with cross reference as per cable manufacturer data for voltage reduction per unit
length. The above cable ampacity table is for guidance only.
2. The selected cables for specified units is as per following characteristics:
a. Unit without electric heaters.
b. Any extra electrical accessories shall add to MCA rate, for more information, refer to unit electrical tables in the catalog.
380V-3Ph-60Hz
4