Payne PG9MAA, Руководство по установке

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CAUTION: UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit operation.
For airflow requirements above 1800 CFM, see Air Delivery table in Product Data literature for specific use of single side inlets. The
use of both side inlets, a combination of 1 side and the bottom, or the bottom only will ensure adequate return air openings for airflow
requirements above 1800 CFM.
Bottom return-air opening may be used with all 4 orientations. Filter may need to be cut to fit some furnace widths. Install filter as shown in Fig.
27.
NOTE:
Remove and discard bottom closure panel when bottom inlet is used.
NOTE: Side return-air openings can ONLY be used in UPFLOW configurations. Install filter(s) as shown in Fig. 28.
F. Bottom Closure Panel
These furnaces are shipped with bottom enclosure panel installed in bottom return-air opening. This panel MUST be in place when side return air
is used.
To remove bottom closure panel, perform following:
1. Tilt or raise furnace and remove 2 screws holding front filler panel. (See Fig. 29.)
2. Rotate front filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall front filler panel and screws.
G. Gas Piping
Gas piping must be installed in accordance with national and local codes. Refer to current edition of NFGC in the United States. Canadian
installations must be made in accordance with NSCNGPIC and all authorities having jurisdiction. Gas supply line should be a separate line running
directly from meter to furnace, if possible. Refer to Table 5 for recommended gas pipe sizing. Risers must be used to connect to furnace and to
meter. Support all gas piping with appropriate straps, hangers, etc. Use a minimum of 1 hanger every 6 ft. Joint compound (pipe dope) should be
applied sparingly and only to male threads of joints. Pipe dope must be resistant to propane gas.
WARNING: FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in fire, explosion, personal injury, or death.
-Connect gas pipe to furnace using a backup wrench to avoid damaging gas controls.
-Gas valve shutoff switch MUST be facing forward or tilted upward.
-Never purge a gas line into a combustion chamber. Never test for gas leaks with an open flame. Use a commercially available soap
solution made specifically for the detection of leaks to check all connections.
-Use proper length of pipe to avoid stress on gas control manifold.
-If a flexible connector is required or allowed by authority having jurisdiction, black iron pipe shall be installed at furnace gas valve and
extend a minimum of 2 in. outside furnace casing.
Install a sediment trap in riser leading to furnace. Trap can be installed by connecting a tee to riser leading to furnace so straight-through section
of tee is vertical. Then connect a capped nipple into lower end of tee. Capped nipple should extend below level of gas controls. Place a ground
joint union between gas control manifold and manual gas shutoff valve. (See Fig. 30.)
If local codes allow the use of a flexible gas appliance connector, always use a new listed connector. Do not use a connector which has previously
served another gas appliance.
WARNING: FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious injury, death or property damage.
Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks
to check all connections. A fire or explosion could result causing property damage, personal injury or loss of life.
An accessible manual shutoff valve MUST be installed external to furnace casing and within 6 ft of furnace. A 1/8-in. NPT plugged tapping,
accessible for test gauge connection, MUST be installed immediately upstream of gas supply connection to furnace and downstream of manual
shutoff valve.
NOTE: The gas valve inlet pressure tap connection is suitable to use as test gauge connection providing test pressure DOES NOT exceed
maximum 0.5 psig (14-in. wc) stated on gas valve. (See Fig. 63.)
Piping should be pressure and leak tested in accordance with NFGC in the United States or NSCNGPIC in Canada, local, and national plumbing
and gas codes before the furnace has been connected. After all connections have been made, purge lines and check for leakage at furnace prior
to operating furnace.
Table 4—Filter Information
FURNACE CASING
WIDTH (IN.)
FILTER SIZE (IN.)*
FILTER TYPE
FRAMED
Side Return Bottom Return
17-1/2 (1) 16 X 25 X 1† (1) 16 X 25 X 1 Cleanable
21 (1) 16 X 25 X 1 (1) 20 X 25 X 1† Cleanable
24-1/2 (1 or 2) 16 X 25 X 1 (1) 24 X 25 X 1† Cleanable
* Filters can be field modified by cutting frame as marked and folding to desired size. Alternate sizes can be ordered from your distributor or dealer.
† Factory-provided with furnace.
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