MAXIMUM ALLOWABLE
DIFFERENCE (in.)
0.5 | 1.0 | 1.0 |
Fig. 4 — Unit Leveling Tolerances
HORIZONTAL | DRAIN PLUG |
DRAIN PLUG |
|
NOTE: Drain plug is shown in
Fig. 5A — Condensate Drain Pan
NOTE: Trap should be deep enough to offset maximum unit static dif- ference. A
Fig. 5B — External Trap Condensate Drain
Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of contami- nated air.
Be sure that unit is installed such that snow will not block the combustion intake or flue outlet.
Unit may be installed directly on wood flooring or on Class A, B, or C
Although unit is weatherproof, guard against water from higher level runoff and overhangs.
Flue vent discharge must have a minimum horizontal clear- ance of 4 ft from electric and gas meters, gas regulators, and gas relief equipment.
Minimum distance between unit and other electrically live parts is 48 inches.
Flue gas can deteriorate building materials. Orient unit such that flue gas will not affect building materials.
Adequate
After unit is in position, remove rigging skids and shipping materials.
V. STEP 5 — INSTALL FLUE HOOD
Flue hood is shipped screwed to the basepan beside the burner compartment access panel. Remove from shipping location and using screws provided, install flue hood and screen in location shown in Fig. 7.
VI. STEP 6 — INSTALL GAS PIPING
Unit is equipped for use with type of gas shown on name- plate. Refer to local building codes, or in the absence of local codes, to ANSI Z223.1 entitled National Fuel Gas Code. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.
For natural gas applications, gas pressure at unit gas con- nection must not be less than 4 in. wg or greater than
13.0in. wg while unit is operating. On 580F048,060,072 high heat units, the gas pressure at unit gas connection must not be less than 5 in. wg or greater than 13 in. wg while the unit is operating. For propane applications, the gas pressure must not be less than 5 in. wg or greater than 13 in. wg at the unit connection.
Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connec- tion. Support gas piping as shown in the table in Fig. 8. For example, a
See Fig. 8 for typical pipe guide and locations of external manual main shutoff valve.
CAUTION: When connecting the gas line to the unit gas valve, the installer MUST use a backup wrench to prevent valve damage.
