5 3 D S --- 9 0 0 --- --- --- 0 9 3
5 3 D S --- 9 0 0 --- --- --- 0 9 4
Installation Instructions
Du ct---F ree Sy stem s
Coo ling Only and Heat P ump Units
Crankcase Heater Accessory
NOTE: Read and become familiar with these instructions before
beginning installation.
SAFETY CONSIDERATIONS
Installing and servicing air--conditioning equipment can be
hazardous due to system pressures and electrical components. Only
trained and qualified personnel should install or service
air-- conditioning equipment. When working on air-- conditioning
equipment, observe the precautions provided in literature, tags, and
labels attached to the unit.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety --alert symbol
!
!
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability , or
operation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before beginning any modification or installation of this kit,
be sure the main electrical disconnect is in the OFF position.
Ensure power is disconnected to the fan coil unit. On some
systems both the fan coil and the outdoor unit may be on the
same disconnect. Tag the disconnect switch with a suitable
warning label. There may be more than one disconnect.
!
WARNING
GENERAL
A Crankcase Heater is required for all low ambient and long line
applications utilizing cooling only and heat pump models as shown
in Table 1.
Table 1 – Crankcase Heater Part Numbers
Models Part No. Voltage
38MVC/MVQ009---012 5 3 D S --- 90 0 --- --- --- 0 9 3 120v
38MVC/MVQ012 5 3 D S --- 9 0 0 --- --- --- 0 9 4 240v
38MVC/MVQ018---024 5 3 D S --- 9 0 0 --- --- --- 0 9 4 240v
INSTALLATION
1. Remove access panels
2. Remove compressor blanket.
3. Wrap crankcase heater around compressor base and tighten
screw clamp.
4. Reinstall compressor blanket.
5. Route crankcase heater wires to unit control box and cut to
length (save excess wire).
6. Connect wiring in unit control box as shown in Fig. 1, 2,
and 3 using terminations provided with crankcase heater kit.
7. If the installation requires field wires (called out in Fig. 3),
they can be made by utilizing the excess wire from Step 5
along with the terminations provided with the kit.
8. Reinstall access panels.
(4 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals