Prime Condensate Trap With Water; Purge Gas Lines; Adjustments; Set Gas Input Rate - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

CONTINUOUS
SWITCH POSITION
FAN
(CFM)
CF-1
Default OFF
600 ON
800 OFF
1000 ON
1200 OFF
1400 ON
1600 OFF
2000 ON
* Add 15% additional CFM when Bypass Humidifier switch SW-3 on control board is used.
X—Indicates allowable selection.
Table 9—Setup Switch Description
SETUP NORMAL
SWITCH NO. POSITION
Turn switch to ON for fault history
SW-1
OFF display. No thermostat signal can be
(FLT)
present for fault history display.
SW-2 Turn switch to ON to lock furnace in
OFF
(LOW) low-heat mode only.
Turn switch to ON when a bypass
humidifier is used. This will compen-
SW-3
OFF sate for higher return-air tempera-
(BPH)
ture and provide 5 percent more air-
flow in low-heat mode only.
Turn switch to ON to bypass micro-
processor control. Furnace will oper-
SW-4 ate at high heat only with main
OFF
(EMER HEAT) blower and inducer motor operating
at maximum RPM. NO safeties are
bypassed.
Turn switch to ON when modulating
dampers are used. In this mode,
SW-5
OFF main blower speed is recalculated
(MZ)
once every minute while furnace is
in low-heat or continuous fan mode.
Turn switch to ON to initiate compo-
nent test. Furnace will operate in-
ducer motor 20 sec low speed, 20
sec high speed, HSI 15 sec or IID 0
SW-6
OFF sec, blower 20 sec low speed, and
(COMP TEST)
blower 20 sec high speed. SW-1
must be in OFF position. No thermo-
stat signal can be present for com-
ponent test to be initiated.
SW-7 and -8 See Adjust switches to provide desired
(Blower Table heating mode blower off delay time,
Off Delay) 10 90, 135, 180, or 225 sec.
Table 10—Blower Off Delay Setup Switch
Position
DESIRED HEATING
SETUP SWITCH (SW-7 AND -8) POSITION
MODE BLOWER
OFF DELAY (SEC)
90
135
180
225
1. Remove main furnace door and blower access panel.
2. Locate setup switches on the control center. (See Fig. 25.)
3. See Table 9 for setup switch description. (See Fig. 23 and 43.)
4. Replace main furnace door and blower access panel.
NOTE: If a bypass humidifier is used, setup switch SW-3 (BPH)
should be in ON position. This prevents nuisance limit trips caused
Table 8—Continuous Fan (CF) Airflow Setup Switch Position
CF SETUP
CF-2 CF-3 042040
OFF OFF
OFF OFF
ON OFF
ON OFF
OFF ON
OFF ON
ON ON
ON ON
DESCRIPTION OF USE
SW-7 SW-8
OFF OFF
ON OFF
OFF ON
ON ON
ALLOWABLE FURNACE MODEL SETUP
042060 042080
565* 515* 690*
X X X
X X X
X X X
X X X
X X X
— — —
— — —
by the increased temperature in the return air resulting from the
bypass.
NOTE: If modulating dampers are used, setup switch SW-5 (MZ)
should be in ON position. This allows the furnace control center to
compensate for the modulating dampers. The control will re-
calibrate for the new system static conditions once every minute
while operating in the low-heat or continuous fan modes.
Step 3—Prime Condensate Trap With Water
Condensate trap must be PRIMED or proper draining may not
occur. The condensate trap has 2 internal chambers which can
ONLY be primed by pouring water into the inducer drain side
of condensate trap.
1. Remove upper inducer housing drain connection cap. (See
Fig. 44.)
2. Connect field-supplied 1/2-in. ID tube to upper inducer
housing drain connection.
3. Insert field-supplied funnel into tube.
4. Pour 1 quart of water into funnel/tube. Water should run
through inducer housing, overfill condensate trap, and flow
into open field drain. (See Fig. 45.)
5. Remove funnel and tube from inducer housing and replace
drain connection cap and clamp.
Step 4—Purge Gas Lines
If not previously done, purge the lines after all connections have
been made and check for leaks.
Never purge a gas line into a combustion chamber. Never use
matches, candles, flame, or other sources of ignition for the
purpose of checking leakage. Use a soap-and-water solution
to check for leakage. Failure to follow this warning could
result in fire, explosion, personal injury, or death.
Step 5—Adjustments

SET GAS INPUT RATE

There are 2 methods of adjusting gas input rate. The preferred
method is by using Table 11 and following instructions in item 1.
The second method is by clocking the gas meter as outlined in item
2. Item 2 must be used for altitudes above 2000 ft.
1. Determine natural gas orifice size and manifold pressure for
correct input by using Table 11.
34
→060080 →060120
060100
690* 860*
— —
X X
X X
X X
X X
X X
X X
1035*
—
X
X
X
X
X
X