152
COMPRESSORS
Sizes 030,035
Access to the compressors is below the unit control box.
Sizes 040-060
Access to the compressors is through the doors on the condens-
er end of the unit. This door also provides access to the dis-
charge service valves, filter driers, the crankcase heaters, and
the high-pressure and low-pressure switches. Circuit A is al-
ways the compressor on the left when facing main control box.
Sizes 070-100
Each compressor is readily accessible from sides of unit.
LIQUID SERVICE VALVES, SUCTION SERVICE VALVES,
AND SIGHT GLASSES
Sizes 030-060
Access to these components is through the access panel on the
right side of the unit. See Fig. 39. There is also a Schrader port
in each suction line that is accessible through this same panel.
Fig. 39 — Typical Filter Drier and Liquid Service
Valve Access
Sizes 070-100
Access to these components is from the side of the unit.
SUPPLY-FAN MOTORS, PULLEYS, AND BELTS
Access to these components is through the two doors labeled
FAN SECTION on each side of the unit.
POWER EXHAUST MOTORS, PULLEYS, AND BELTS
Access to these components is through the door below the side
economizer hoods on both sides of the unit. See Fig. 40.
Fig. 40 — Modulating Power Exhaust
Motor Access (Both Sides)
RETURN AIR FILTERS
Access to these filters is through the door marked FILTER
SECTION.
UNIT CONTROL BOX
Access to this component is through the doors marked ELEC-
TRICAL SECTION on the condenser end of the unit.
GAS HEAT SECTION (48P ONLY)
Access to the gas heat section is through the door labeled
HEAT SECTION on the right side of the unit (when facing re-
turn air end). Figures 41-43 show the gas system components
for 2-stage heat and staged gas heat. Figure 44 shows the com-
ponents of a typical modulating gas heat section. For modulat-
ing heat units, Fig. 44 replaces section 2 in Fig. 41-43.
Fig. 41 — Gas Section Detail, Sizes 030-050
Fig. 42 — Gas Section Detail, Sizes 055-100
(Low Heat)
NOTE: High heat consists of sections 1 and 2. Low heat consists of
section 1 only.
LIMIT
S
WITCH
NO. 1
S
ECTION 1
S
ECTION 2
LIMIT
S
WITCH
NO. 2
GA
S
VALVE
GA
S
VALVE
FLUE
OUTLET
FLUE
OUTLET
GA
S
VALVE
FLUE
OUTLET
LIMIT
S
WITCH
NO. 1
S
ECTION 1
S
ECTION 2
LIMIT
S
WITCH
NO. 2
FLUE
OUTLET
GA
S
VALVE
Summary of Contents for Weathermaster 48P2030-100
Page 130: ...130 Fig 19 Typical Power Schematic Sizes 040 075 Shown ...
Page 131: ...131 Fig 20 Main Base Board Input Output Connections ...
Page 132: ...132 Fig 21 RXB EXB CEM SCB Input Output Connections ...
Page 133: ...133 Fig 22 Typical Gas Heat Unit Control Wiring 48P030 100 Units Shown ...
Page 134: ...134 Fig 23 Typical Electric Heat Wiring 50P030 100 Units Shown ...
Page 135: ...135 Fig 24 Typical Power Wiring 115 V ...
Page 136: ...136 Fig 25 Typical Gas Heat Section Size 030 050 Units Shown ...
Page 138: ...138 Fig 27 Component Arrangement Size 030 035 Units ...
Page 139: ...139 Fig 28 Component Arrangement Size 040 075 Units ...
Page 140: ...140 Fig 29 Component Arrangement Size 090 100 Units ...
