Venting; Gas Supply Piping; Condensing Furnace Condensate; Drain Connections - Carrier AGATWNPME01B Installation Instructions Manual

AGATWNPME01B: Installation Instructions
Table 5 – Continuous Fan Operation
CONTROL
THERMOSTAT
BOARD
CONNECTIONS
CONNECTION
R R
G G

VENTING

Refer to Installation, Start-Up, and Operating Instructions supplied with
each furnace for venting information.
breach-vent condensing furnaces. Refer to furnace installation
instructions for allowable configurations and proper termination. It is
important that vent terminations be made as shown to avoid recirculation
of flue gases.

GAS SUPPLY PIPING

All gas connections must be made through exposed outer side of each
furnace. Do not common connect any connection other than supply and
return-air ducts. Furnaces are recommended to be provided with a single
shutoff valve. However, individual shutoff valves may be required by
local codes or jurisdictions. Refer to Installation, Start-Up, and
Operating Instructions provided with each furnace for additional gas
supply information.

CONDENSING FURNACE CONDENSATE

DRAIN CONNECTIONS

The condensate trap for a condensing furnace is factory installed in the
furnace vestibule and factory connected for UPFLOW applications.
Install condensate trap such that field drain connections are on the left
side for LH (MAIN) furnace and on right side for RH (SECONDARY)
furnace.
The condensate trap must be relocated for downflow and horizontal
applications.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig. 31 – Single-Stage Furnace with Single-Stage Thermostat (Field Supplied)
ACTION
Power from control board to
thermostat
Operates fan speed at continuous
fan selection.
Do not common-vent or
See furnace Installation, Start-Up, and Operating Instructions for details
on relocating the condensate and attaching field drain connections.
Indoor coil condensate drains must not be hard piped to condensing
furnace condensate drain.
separately to a code-approved drain.
Indoor coil condensate drains may be combined with furnace condensate
drains provided a stand-pipe connection (air gap) is made in the
condensate drainage system.
instructions for additional details.
Slope all drain lines at least 1/4 in. per foot. Support or clamp all drain
lines to prevent damage to the drain line.

START-UP AND ADJUSTMENT

!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury or death,
or property damage.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position and install a lockout tag.
There may be more than one disconnect switch. Check accessories and
cooling unit for additional electrical supplies that must be shut off
during furnace servicing. Lock out and tag switch with a suitable
warning label. Verify proper operation after servicing.
Refer to Installation, Start-Up, and Operating Instructions supplied with
furnace for detailed information.
1. Shut off all power and gas to both furnaces.
2. Position blower off delay switches on controls in BOTH furnaces to
the SAME desired blower off delay in heating. See furnace
Installation, Start-Up, and Operating Instruction for further details.
21
Route indoor coil condensate drains
Refer to the furnace installation
WARNING
A200261