Installation manual
FIGURE 3 - Dimension
“T” With Optional
Downturn Nozzle
4.2 Clearances
Clearances
Model UEAS
130, 180, 260,
310
Top Flue Connector Access Panel Non-Access Side Bottom* Rear**
inches mm inches mm inches mm inches mm inches mm inches mm
4 102 6 152 18 457 2 51 1 25 18 457
*Suspend the heater so that the bottom is a minimum of 5 feet (1.5M) above the oor.
** Measure rear clearance from the fan motor.
"T" for UEAS
Size
with Option CD2 with Option CD3 with Option CD4
inches mm inches mm inches mm
130, 180 11-1/2 292 19-7/8 505 14-1/2 368
260, 310 18-1/2 470 32 813 21-1/2 546
Units must be installed so that the clearances in the table are provided for combus-
tion air space, inspection and service, and for proper spacing from combustible
construction. Clearance to combustibles is dened as the minimum distance from
the heater to a surface or object that is necessary to ensure that a surface tem-
perature of 90°F above the surrounding ambient temperature is not exceeded.
If the heater is being installed at an elevation above 2000 ft (610M), the input rate
will have to be derated. This is done by adjusting the valve outlet pressure. Adjust-
ing the valve outlet pressure is done after the heater is in operation; follow the
instructions in Paragraph 7.1.3. Capacities and inputs for derated units are also
listed in Paragraph 7.1.3.
5.0 High Altitude
Operation
6.0 Hanging the
Heater
Before suspending the heater, check the supporting structure to be used to verify
that it has sufcient load-carrying capacity to support the weight of the unit.
Model UEAS - Weight
Size 130 180 260 310
lbs 230 245 360 395
kg 104 111 163 179
WARNING
Unit must be level
for proper operation.
Do not place or add
additional weight
to the suspended
heater. Hazard
Levels, page 2.
WARNING
Check the supporting structure to be used to verify
that it has sufcient load carrying capacity to support
the weight of the unit. Suspend the heater only from the
threaded nut retainers or with a manufacturer provided
kit. Do NOT suspend from the heater cabinet.
When the heater is lifted for suspension, support the bottom of the heater with ply-
wood or other appropriately placed material. If the bottom is not supported, dam-
age could occur. Before hanging, verify that any screws used for holding shipping
brackets were re-installed in the cabinet.
The heater has four-point suspension. Suspension point dimensions are shown in
FIGURE 2, page 6. A 3/8”-16 threaded nut retainer is located at each suspension
point (FIGURE 4A).
Form I-UEAS, P/N 221232 R11, Page 7