Start-Up, Adjustment And Safety Check; Select Setup Switch Positions; Condensate Drain Protection; Air Conditioning (A/C) Setup Switches - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

/ \
OPEN STAND --7
PIPE FOR ]
A/C OR
/
HUMIDIFIER ,_
DRAIN _
A94054
Fig. 48--Example of Fiemd Drain Attachment
APPLI(ATION
The fb.mace, A/C, and humidifier &ains may be combined and
drained together. The Ai( &ain must have an external, t_eld°
supplied trap prior to the furnace &ain connection All &ain
connections (furnace, A/C, or humidifier) must be terminated into
an open or vented drain as close to the respective equipment as
possible to prevent siphoning of the equipment's &ain.
See Fig. 48 _br example of possible field drain attachment using
1/2-in. CPVC or PVC tee _br vent and AiC or humidifier &ain
connection.
Outdoor draining of the Nrnace is permissible if allowed by local
codes. ( aution should be taken when t?eezing ambient may freeze
drain pipe and prohibit draining.
--€ PERSONAL INJURY AND PROPERTY DAMAGE
HAZARD
Failure to £_llow this warning could result in property damage
and personal ir!iury or death.
(antion should be taken to prevent &aining where slippery
conditions may cause personal ir!iuries. Excessive condensate
draining may cause saturated soil conditions which may result
in damage to plants.
4. Wrap field drain pipe with remaining heat tape, approximately
1 wrap per ft
5. When using field=supplied heat tape, _bllow heat tape manu=
_hcturer's insm/ctions for all other installation guidelines.
START-UP, ADJUSTMENTS AND SAFETY CHECK
Step l--General
1. F_lrnace must have a 115=v powei supply properly connected
and grounded.
NOTE: Proper polarity must be maintained for l15-v wiring. If
polarity is incon'ect, control stares indicator light flashes rapidly
and furnace does not operate.
2. Thermostat wire connections at terminals R, W/W1, G, and
Y/Y2 must be made at 24-v tem_inal block on furnace control.
3. Natmal gas service pressure must not exceed 0.5 psig (14-in.
wc), but must be no tess than 0.16 psig (4.5=in. wc).
4. Blower access panel must be in place to complete l15-v
electrical circuit to filrnace.
FIRE HAZARD
Failure to _bllow this cmltion may resnlt in intermittent unit
operation or per[brmance satisfaction.
These t:urnaces are equipped with a manual reset limit switch
in burner box. This switch opens and shuts off power to the
gas valve if an overheat condition (flame rollout) occurs in
burner enclosure. (orrect inadequate combustion=air supply
or improper venting condition befbre resetting switch. DO
NOT jmnper this switch.
Be%re operating fire, ace, check flame rollout manual reset switch
for continuity. If necessary, press button to reset switch
Step 2--Select Setup Switch Positions
AIR (ONDITIONING (A/C) SETUP SWIT(HES
The air conditioning setup switches are used to match furnace
airflow to cooling unit used.
To set the desired cooling airflow:
1. Remove main fi/mace door and blower access panel,
2. Locate AiC setup switches on furnace control, (See Fig. 32)
3. Determine air conditioning tonnage used,
CONDENSATE
( ONDENSATE DRAIN PROTECTION
Freezing condensate left in condensate trap and drain line may
cause cracks, and possible water damage may occur. If freeze
protection is required, use condensate t'reeze protection accessow
or equivalent 3 to 6 watt per ft at 120v and 40°F self=regulating,
shielded, and waterproof heat tape. See Installation Instructions
supplied with accessory or heat tape manuitacturer's recommenda°
tions
1. Fold heat tape in halt" and wrap on itself 3 times,
2. Locate heat tape between sides of condensate trap back. (See
Fig. 49.)
3. [so wire ties to secure heat tape in place Wire ties can be
positioned in notches of" condensate tlap sides (See Fig. 49.)
36
WIRE TIE(S)_
,4
HEAT TAPE_
(3 WRAPS MINIMUM)_
Fig. 49--Condensate Trap Heat Tape
A93036