McQuay Suite II, Установка и обслуживание данных

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Units that are furnished with remote mounted thermostats
should be wired as shown in Figure 17. Other considerations
for this arrangement are as follows:
1.
When wiring the low voltage plug and receptacle discon-
nect, provide enough wire to move harness out of the
way for chassis removal
2. If subbase is used, a small hole must be drilled and
grommeted in the subbase front to allow passage of the
low voltage wires.
3. If slave units are to be employed, connects shown in Fig-
ure 17. With this arrangement, the loop between termi-
nals N2 and N4 of the slave unit must be severed. The
standard master transformer handles 10 VA power draw
and each slave unit draws 5VA. If more than one slave
unit is used, the master transformer must be replaced
with a larger one. The number of slave units that can be
connected is limited to the maximum amperage rating of
the thermostat contacts.
4. When using a programmable wall thermostat, splice into
the jumper going from N2 to N4 of the master unit and
connect it to the common terminal of the thermostat. Refer
to the instructions furnished with the chosen thermostat
to locate the common terminal. Note: It may be neces-
sary to place a larger VA transformer in the unit when
using certain programmable thermostats. Check the VA
draw of the chosen thermostat,
Incremental conditioners are built to last. With proper care,
the unit should provide uninterrupted service for many years.
Scheduled maintenance of this equipment as described bel-
low, is the key to the equipment's longevity.
A. Air filters must be cleaned at regular intervals. Twice an-
nually may be adequate in some areas while twice monthly
may be required in others. Areas with high dirt and lint
content or heavy usage of units require more frequent
filter maintenance than those areas of relatively clean
operating or low usage conditions. Unit malfunction will
occur if air filters are not kept clean. Rinse filter with hot
water and a mild detergent. Let dry and oil lightly to en-
hance dust collecting ability.
B. McQuay recommends that every year the chassis be re-
moved for a thorough checkup. This should be completed
as follows:
1. Unplug unit from power source.
2. Remove front panel.
3. Remove chassis from cabinet and move it to the mainte-
nance department. Replace with spare chassis or weather
plate.
4. Check all seals and Insulation and repair as required.
5. Check all wiring and controls for hazardous conditions.
6. Thoroughly clean discharge grilles.
7. Cover motors and control module with water tight mate-
rial and wash evaporator coil, condenser coil and base
pan using hot water and a mild soap.
Residential and institutional cleaning compounds can cause
permanent damage to the packaged terminal unit. To avoid
damage to unit controls and heat transfer surfaces, do not
spray cleaning compounds onto the discharge grille, return
air opening, or unit controls. Normal cleaning can be accom-
plished by wiping the unit surface with a damp cloth. When
using cleaning compounds on carpets, floors or walls, turn
the unit off to avoid drawing potentially damaging vapors into
the package terminal unit.
8. Clean condensate drain and clear weep holes.
9. Dry equipment thoroughly, especially electric parts and
installation. 10. Clean any rust spots with steel wool and
paint with rust inhibiting paint.
11. Clean insulation or replace if necessary.
12. Check insulation on refrigeration piping and replace if
necessary.
13. Check all fasteners and tighten as required.
14. Clean and oil damper door and linkage.
15. Test run chassis before reinstalling.
Installing Remote Mounted Thermostat Scheduled Maintenance
WARNING
Figure 17.
Optional Wall Plate
Temperature
Fall
System
Switch
Heat
Off
Cool
On
Auto
Fan
Switch
See Note
3 Above
Low
Voltage
Plug &
Receptacle
Disconnect
Wires from Control
Master Unit
Wires from Control
Slave Unit