Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual page 35

A96128
Fig. 41--Rooftop Termination (Dimension "A" is Touching or 2=in. Maximum Separation)
See Fig 46 %r example of possible t_eld drain attachment using
1/2-in CPV( or PVC tee fbr vent and Ai( or humidifier &ain
connection.
Outdoor draining of the ii/mace is permissible if allowed by local
codes. Caution should be taken when fi'eezing ambient may fieeze
drain pipe and prohibit draining.
PERSONAL INJ[ R¥ HAZARD
Caution should be taken to prevent draining where slippeQ'
conditions could cause personal injuries.
Excessive condensate draining may cause saturated soil
conditions which conld result in damage to plants
COMBUSTION
AIR
(ONDENSATE DRAIN PROTE(TION
Freezing condensate left in condensate trap and drain line may
cause cracks, and possible water damage may occur. If fieeze
protection is required, use condensate freeze protection accesso_
or equivalent 3 to 6 watt per ft at 120 v and 40°F self-regulating,
shielded, and waterproof heat tape. See Installation Instructions
supplied with accessory or heat tape manuihcmrer's recomrnenda°
tions.
1. Fold heat tape in half and wrap on itself 3 times.
2. Locate heat tape between sides of condensate trap back. (See
Fig. 47.)
3. Use wire ties to secure heat tape in place. Wire ties can be
positioned in notches of condensate trap sides. (See Fig. 47.)
4. Wrap field &ain pipe with remaining heat tape, approximately
1 wrap per k.
5. When using field=supplied heat tape, _bllow heat tape manu=
_hcmrer's instructions for all other installation guidelines.
A93056
Fig. 42--Concentric Vent and Combustion-Air Roof
Termination (Dimension "A" is Touching or
2-in. Maximum Separation)
START-UP, ADJUSTMENTS, AND SAFETY CHECK
Step l--General
l. Furnace m_/st have a 115-v power supply properly connected
and gronnded
NOTE: Proper polarity must be maintained for l15-v wiring. If
polarity is incmTect, control LED status indicator will flash rapidly
and furnace will not operate.
2. Thermostat wire connections at terminals R, W, G, and Y/Y2
must be made at 24-v terminal block on t:urnace control.
3. Natural gas service pressure must not exceed 0.5 psig (14=in.
wc), and 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.
VENT
A93057
Fig. 43--Concentric Vent and Combustion-Air Side
Termination (Dimension "A" is Touching or
2-in. Maximum Separation)
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