ICP PGN324 Installation instructions manual - Warning
8
Step 6—Connect Condensate Drain
NOTE: When installing condensate drain connection be
sure to comply with local codes and restrictions.
The PGN3 disposes of condensate water through a 3/4 in.
NPT fitting which exits through the base on the evaporator
coil access side. See Fig. 3 & 4 for location.
Condensate water can be drained directly onto the roof in
rooftop installations (where permitted) or onto a gravel
apron in ground level installations. Install a field--supplied
2--in. (51mm) condensate trap at the end of condensate
connection to ensure proper drainage. Make sure that the
outlet of the trap is at least 1 in. (24mm) lower than the
drain--pan condensate connection to prevent the pan from
overflowing (See Fig. 6). Prime the trap with water. When
using a gravel apron, make sure it slopes away from the
unit.
Connect a drain tube using a minimum of 3/4--in. PVC or
3/4--in. copper pipe (all field--supplied) at the outlet end of
the 2--in. (51mm) trap. Do not undersize the tube. Pitch the
drain tube downward at a slope of at least 1--in (25mm). for
every 10 ft (3048mm) of horizontal run. Be sure to check the
drain tube for leaks.
FIGURE 6
Condensate Drain
TRAP
OUTLET
2" min.
1" min.
Step 7—Install Flue Hood
The flue assembly is secured and shipped in the return air
duct. Remove duct cover to locate the assembly (See Fig.
8 and 9).
NOTE: Dedicated low NOx models MUST be installed in
California Air Quality Management Districts where a Low
NOx rule exists.
These models meet the California maximum oxides of
nitrogen
(NOx)
emissions
requirements
of
40
nanograms/joule or less as shipped from the factory.
NOTE: Low NOx requirements apply only to natural gas
installations.
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
The venting system is designed to ensure proper
venting. The flue hood assembly must be installed as
indicted in this section of the unit installation instructions.
!
WARNING
Install the flue hood as follows:
1. This installation must conform with local building codes
and with the National Fuel Gas Code (NFGC), ANSI
Z223.1 (in Canada, CAN/CGA B149.1, and B149.2) or
NFPA (National Fire Protection Association) latest
revision. Refer to Provincial and local plumbing or
wastewater codes and other applicable local codes.
2. Remove flue hood from shipping location (inside the
return section of the blower compartment--see Fig. 8 &
9). Remove the return duct cover to locate the flue
hood. Place flue hood assembly over flue panel. Orient
screw holes in flue hood with holes in the flue panel.
3. Secure flue hood to flue panel by inserting a single
screw on the right side and the left side of the hood.
Step 8—Install Gas Piping
The gas supply pipe enters the unit through the access hole
provided. The gas connection to the unit is made to the
1/2--in. FPT gas inlet on the gas valve.
Install a gas supply line that runs to the heating section.
Refer to Table 2 and the NFGC for gas pipe sizing. Do not
use cast--iron pipe. It is recommended that a black iron pipe
is used. Check the local utility for recommendations
concerning existing lines. Size gas supply piping for 0.5 in.
wc maximum pressure drop. Never use pipe smaller than
the 1/2--in. FPT gas inlet on the unit gas valve.
For natural gas applications, the gas pressure at unit gas
connection must not be less than 4.0 in. wc or greater than
13 in. wc while the unit is operating. For propane
applications, the gas pressure must not be less than 7.0 in.
wc or greater than 13 in. wc at the unit connection.
A 1/8--in. NPT plugged tapping, accessible for test gauge
connection, must be installed immediately upstream of the
gas supply connection to the gas valve.
When installing the gas supply line, observe local codes
pertaining to gas pipe installations. Refer to the NFGC ANSI
Z223.1--2005 NFPA latest edition (in Canada, CAN/CGA
B149.1).
NOTE:In the state of Massachusetts:
1. Gas supply connections MUST be performed by a
licensed plumber or gas fitter.
2. When flexible connectors are used, the maximum
length shall not exceed 36 inches (915 mm).
3. When lever handle type manual equipment shutoff
valves are used, they shall be T--handle valves.
4. The use of copper tubing for gas piping is NOT
approved by the state of Massachusetts.
In the absence of local building codes, adhere to the
following pertinent recommendations:
1. Avoid low spots in long runs of pipe. Grade all pipe 1/4
in. (6mm) for every 15 ft (4572mm) of length to prevent
traps. Grade all horizontal runs downward to risers. Use
risers to connect to heating section and to meter.
2. Protect all segments of piping system against physical
and thermal damage. Support all piping with
appropriate straps, hangers, etc. Use a minimum of one
hanger every 6 ft. (1829mm) For pipe sizes larger than
1/2 in., follow recommendations of national codes.
3. Apply joint compound (pipe dope) sparingly and only to
male threads of joint when making pipe connections.