1
5 3 D S --- 9 0 0 --- --- --- 0 6 0 ( R --- 2 2 )
5 3 D S --- 9 0 0 --- --- --- 0 8 6 ( P u r o n )
Installation Instructions
Du ct---F ree Sy stem s
Coo ling Only and Heat P ump Units
Low Ambient Temperature Controller Accesso ry
2To5NominalTons
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
IMPORTANT: Heat pump models require an isolation relay to
prevent fan cycling in heat pump mode. See Table 1 for isolation
relay part numbers.
Table 1—Isolation Relay Part Numbers
R --- 2 2 Part No.
RCD
Part No.
Voltage
38BNQ009/012 HN61KK912 P283--- 0294 120v
38BCQ018/024 HN61KK912 P283---0294 120v
38BNQ018/036 HN61KK913 P283--- 0295 240v
R---410a Part No.
RCD
Part No.
Voltage
38QRR/QRF HN61KK066 P283--- 0293 24v
538B_R/538Q_R HN61KK066 P283--- 0293 24v
Wind baffles are required for all R410a units (18--60k are blow
through design) used for low ambient operation. Use factory
accessory listed in T able 2.
Wind baffles are not available from the factory for R--22
condensers (draw through design). If wind baffles are required,
they need to be field fabricated. Baffles should be located 6”
from unit on coil side of condenser (2 sides). Use CAUTION, do
not drill into coil
Table 2—Wind Baffle Accessories for R--410A Units
R---410a Models Wind Baffle Part No.
38HDF/QRF/HDR/QRR018
538E_F/538Q_F018
5 3 D S --- 9 0 0 --- --- --- 0 7 0
38HDF/HDR024, 38HDF030,
38QRF/QRR024
538E_F/538A_R024
538E_F030, 538Q_F/538B_R024
5 3 D S --- 9 0 0 --- --- --- 0 8 7
38HDF036, 38QRF030/035/036,
38HDR/QRR030/036 538E_F036
538Q_F030/035/036,
538A_R/538B_R030/036
5 3 D S --- 9 0 0 --- --- --- 0 7 1
38HDR/QRR048, 060
538A_R/538B_R048, 060
5 3 D S --- 9 0 0 --- --- --- 0 8 8
Winter Start Control (part number KAAWS0101AAA) is
required when low ambient operation (cooling below 55_F) is
required for cooling and heat pump models (018--060) that have a
low pressure switch.
The Winter Start Control kit uses a time--delay relay to bypass the
low-- pressure switch for three (3) minutes on start--up. the time
delay relay will take the low pressure switch out of the control
circuit to allow the system to build pressure eliminating nuisance
trips. Units with low pressure switches: 38HDR/HDF/QRR/QRF
and 538A_B/E_F, 538Q_F.
(10 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals