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2
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/NFPA70, 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 per-
sonal injury.
Understand the signal words DANGER, WARNING, CAU-
TION, 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 signi-
fies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may re-
sult in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in en-
hanced installation, reliability, or operation.
!
Rated Indoor Airflow (cfm) —
Table 1 lists the rated
indoor airflow used for the AHRI efficiency rating for the units
covered in this document.
Table 1 — AHRI Efficiency — Rated Indoor Airflow
WARNING
Failure to follow this warning could result in personal
injury or death. Disconnect gas piping from unit when leak
testing at pressure greater than 0.5 psig (3450 Pa). Pres-
sures greater than 0.5 psig (3450 Pa) will cause gas valve
damage resulting in hazardous condition. If gas valve is
subjected to pressure greater than 0.5 psig (3450 Pa), it
must be replaced before use. When pressure testing field-
supplied gas piping at pressures of 0.5 psig (3450 Pa) or
less, a unit connected to such piping must be isolated by
closing the manual gas valve.
WARNING
Failure to follow this warning could cause personal injury
or death. Before performing service or maintenance opera-
tions on unit, always turn off main power switch to unit and
install lock(s) and lockout tag(s). Unit may have more than
one power switch.
WARNING
Failure to follow this warning could cause personal injury,
death and/or equipment damage.
Puron (R-410A) refrigerant systems operate at higher pres-
sures than standard R-22 systems. Do not use R-22 service
equipment or components on Puron refrigerant equipment.
WARNING
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 refrig-
erants and oils.
CAUTION
Failure to follow this caution may result in personal in-
jury. Sheet metal parts may have sharp edges or burrs.
Use care and wear appropriate protective clothing, safe-
ty glasses and gloves when handling parts and servicing
air conditioning equipment.
WARNING
CARBON-MONOXIDE POISONING HAZARD
Failure to follow instructions could result in severe person-
al injury of death due to carbon-monoxide poisoning, if
combustion products infiltrate into the building.
Check that all openings in the outside wall around the vent
(and air intake) pipe(s) are sealed to prevent infiltration of
combustion products into the building.
Check that furnace vent (and air intake) terminal(s) are not
obstructed in any way during all seasons.
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Inlet pressure tap set screw must be tightened and
1
/
8
in. NPT
pipe plug must be installed to prevent gas leaks.
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Manifold pressure tap set screw must be tightened and
1
/
8
in. NPT pipe plug must be installed to prevent gas leaks.
MODEL NUMBER
FULL LOAD AIRFLOW (CFM)
48TC*A04
1275
48TC*A05
1400
48TC*A06
1800
48TC*A/B07
2200
GAS VALVE
INLET PRESSURE
TAP SET SCREW
MANIFOLD
GAS VALVE
MANIFOLD PRESSURE
TAP SET SCREW
Summary of Contents for WeatherMaker 48TC 04
Page 4: ...4 Fig 2 Unit Dimensional Drawing ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing cont ...
Page 21: ...21 Fig 34 48TC B07 Unit with Humidi MiZer Adaptive Dehumidification System Humidistat Wiring ...
Page 39: ...39 Fig 45 PremierLink Wiring Schematic ...
Page 40: ...40 Fig 46 PremierLink Wiring Schematic with Humidi MiZer System ...
Page 48: ...48 Fig 65 Typical RTU Open System Control Wiring Diagram ...
Page 49: ...49 Fig 66 Typical RTU Open System Control Wiring Diagram with Humidi MiZer System ...