Prime Condensate Trap With Water - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

32 o F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 32—Freeze Protection
UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit
operation.
Unit must not be installed, operated, and then turned and left
off in an unoccupied structure during cold weather when
temperature drops to 32°F or below unless drain trap and
drain line have adequate freeze protection. See Service and
Maintenance Instructions for winterizing procedure. (See Fig.
32.)
OPEN STAND
PIPE FOR
A/C OR
HUMIDIFIER
DRAIN
TEE
TO OPEN
DRAIN
Fig. 33—Example of Field Drain Attachment
CONTINUOUS FAN (CF) SETUP SWITCHES
The CF setup switches are used to select desired airflow when
thermostat is in continuous fan mode or to select low-cooling
airflow for two-speed cooling units. This setup feature allows
continuous fan airflow or low-cooling airflow to be adjusted. To
set desired continuous fan airflow or low-cooling airflow:
CONDENSATE TRAP
WIRE TIE(S)
HEAT TAPE
(3 WRAPS MINIMUM)
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Fig. 34—Condensate Trap Heat Tape
1. Remove main furnace door and blower access panel.
2. Locate CF setup switches on furnace control. (See Fig. 25.)
3. Determine desired continuous fan airflow or low-cooling
airflow.
4. Use Fig. 47 or wiring schematic to determine proper setup
position of CF switches. (See Fig. 24 and 36.)
5. Replace main furnace door and blower access panel.
SETUP SWITCHES (SW1)
The furnace control has 8 setup switches that may be set to meet
the application requirements. Position these setup switches for the
appropriate requirement.
1. Remove main furnace door and blower access panel.
2. Locate setup switches on furnace control. (See Fig. 25.)
3. See Table 10 for setup switch description. (See Fig. 24 and
36.)
4. Replace main furnace door and blower access panel.
NOTE: If a bypass humidifier is used, setup switch SW1-3 (Low
HEAT Rise Adjust) should be in ON position. This compensates
for the increased temperature in return air resulting from bypass.
NOTE: If modulating dampers are used, blower motor automati-
cally compensates for modulating dampers.
Step 3—Prime Condensate Trap With Water
UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit
operation.
Condensate trap must be PRIMED or proper draining may not
occur. The condensate trap has 2 internal chambers which can
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ONLY be primed by pouring water into the inducer drain side
of condensate trap.
1. Remove upper inducer housing drain connection cap. (See
Fig. 37.)
2. Connect field-supplied 1/2-in. ID tube to upper inducer
housing drain connection.
3. Insert field-supplied funnel into tube.
33
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