Condensate Drain - Carrier 58UVB series Installation, Start-Up, And Operating Instructions Manual

Step 10 —Condensate Drain
GENERAL
Condensate trap is shipped installed in the blower shelf.
Condensate trap can be RELOCATED to the side of the casing.
Condensate trap MUST be used for all applications.
An external trap is not required when connecting the field drain
to this condensate trap.
The field drain connection (condensate trap or drain tube
coupling) is sized for 1/2- -in. CPVC, 1/2- -in. PVC, or 5/8- -in. ID
tube connection.
Drain pipe and fittings must conform to ANSI standards and
ASTM D1785, D2466, or D2846. CPVC or PVC cement must
conform to ASTM D2564 or F493. Primer must conform to
ASTM F656. In Canada, use CSA or ULC certified schedule 40
CPVC or PVC drain pipe, fittings, and cement.
When a condensate pump is required, select a pump which is
approved for condensing furnace applications. To avoid
condensate spillage, select a pump with an overflow switch.
Furnace condensate is mildly acidic, typically in the pH range of
3.2 to 4.5. Due to corrosive nature of this condensate, a
condensate pH neutralizing filter may be desired. Check with
local authorities to determine if a pH neutralizer is required.
APPLICATION
The furnace, A/C, and humidifier drains may be combined and
drained together. The A/C drain must have an external, field
supplied trap prior to the furnace drain connection. All drain
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 drain.
See Fig. 37 for example of possible field drain attachment using
1/2- -in. CPVC or PVC tee for vent and A/C or humidifier drain
connection.
Outdoor draining of the furnace is permissible if allowed by local
codes. Caution should be taken when freezing ambient may
freeze drain pipe and prohibit draining.
CAUTION
!
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. 36.)
WARNING
!
PERSONAL INJURY HAZARD
Failure to follow this warning could result in property
damage and personal injury or death.
Caution should be taken to prevent draining where
slippery conditions may cause personal injuries.
Excessive condensate draining may cause saturated soil
conditions which may result in damage to plants.
CONDENSATE 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 freeze protection accessory
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
recommendations.
1. Fold heat tape in half and wrap on itself 3 times.
2. Locate heat tape between sides of condensate trap back.
(See Fig. 38.)
3. Use wire ties to secure heat tape in place. Wire ties can be
positioned in notches of condensate trap sides. (See Fig.
38.)
4. Wrap field drain pipe with remaining heat tape,
approximately 1 wrap per ft.
5. When using field- -supplied heat tape, follow heat tape
manufacturer's instructions for all other installation
guidelines.
32 o F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 36 --- Freeze Protection
OPEN STAND
PIPE FOR
A/C OR
HUMIDIFIER
DRAIN
TEE
TO OPEN
DRAIN
Fig. 37 --- Example of Field Drain Attachment
32
or heat tape manufacturer's
A93058
A94054