2
Field Connections
36
. . . . . . . . . . . . . . . . . . . . . . . . . .
Space Temperature (SPT) Sensors
37
. . . . . . . . . . . .
Indoor Air Quality (CO
2
) Sensor
37
. . . . . . . . . . . . .
Outdoor Air Quality Sensor
38
. . . . . . . . . . . . . . . . .
Smoke Detector/Fire Shutdown (FSD)
38
. . . . . . . . .
Connecting Discrete Inputs
38
. . . . . . . . . . . . . . . . . .
Communication Wiring − Protocols
38
. . . . . . . . . . . .
General
38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Access
39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTU Open Controller Troubleshooting
39
. . . . . . . .
Outdoor Air Enthalpy Control
41
. . . . . . . . . . . . . . . . .
Differential Enthalpy Control
41
. . . . . . . . . . . . . . . .
Return Air Enthalpy Sensor
41
. . . . . . . . . . . . . . . . .
Smoke Detectors
41
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 11 − Adjust Factory−Installed Options
50
. . . . . . . .
50
. . . . . . . . . . . . . . . . . . .
Step 14 − Check Belt Tension
51
. . . . . . . . . . . . . . . . . . .
UNIT START−UP CHECKLIST
55
. . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal injury
or property damage. Consult a qualified installer, service
agency, or your distributor or branch for information or
assistance. The qualified installer or agency must use
factory−authorized kits or accessories when modifying this
product. Refer to the individual instructions packaged with
the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloths for brazing operations and
have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and appropriate
national electrical codes (in USA, ANSI/NFPA 70,
National Electrical Code (NEC); in Canada, CSA C22.1)
for special requirements.
It is important to 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 the signal words DANGER, WARNING,
CAUTION, and NOTE. 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 cause personal
injury or death.
Before performing service or maintenance operations
on unit, always turn off main power switch to unit and
install lockout tag. Unit may have more than one
power switch.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
Puron
r
(R−410A) refrigerant systems operate at
higher pressures than standard R−22 systems. Do not
use R−22 service equipment or components on Puron
refrigerant equipment.
!
WARNING
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could cause personal
injury or death.
Relieve pressure and recover all refrigerant before
system repair or final unit disposal.
Wear safety glasses and gloves when handling
refrigerants. Keep torches and other ignition sources
away from refrigerants and oils.
!
WARNING
CUT HAZARD
Failure to follow this caution may result in personal
injury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing, safety
glasses and gloves when handling parts and servicing
heat pump units.
CAUTION
!
50HCQ
Summary of Contents for WeatherMaster 50HCQ
Page 4: ...4 C160133 Fig 2 Unit Dimensional Drawing 07 08 Size Units 50HCQ...
Page 5: ...5 C160134 Fig 2 Unit Dimensional Drawing 07 08 Size Unit cont 50HCQ...
Page 6: ...6 C10588 Fig 3 Unit Dimensional Drawing 09 Size Units 50HCQ...
Page 7: ...7 C10589 Fig 3 Unit Dimensional Drawing 09 Size Unit cont 50HCQ...
Page 26: ...26 C160124 Fig 39 Typical PremierLinkt Control Wiring Diagram 50HCQ...
Page 35: ...35 C160125 Fig 56 Typical RTU Open Controller Wiring Diagram 50HCQ...
Page 53: ...53 50HCQ...