3. Receiving,
Uncrating, and
Preparing for
Installation
4. Clearances and
Dimensions
The presence of chlorine vapors in the combustion air of gas-fired heating
equipment presents a potential corrosion hazard. Chlorine found usually in
the form of freon or degreaser vapors, when exposed to flame will precipi
-
tate from the compound, and go into solution with any condensation that is
present in the heat exchanger or associated parts. The result is hydrochlo
-
ric acid which readily attacks all metals including 300 grade stainless steel.
Care should be taken to separate these vapors from the combustion pro-
cess. This may be done by wise location of the unit vent and combustion air
terminals with regard to exhausters or prevailing wind directions. Chlorine
is heavier than air. Keep these facts in mind when determining installation
location of the heater in relation to building exhaust systems.
2. Unit Heater
Location (cont’d)
Location Recommendations (cont’d)
Hazards of Chlorine
- applies to location of
Model UEAS heater with
regard to combustion air
inlet
This unit was test operated and inspected at the factory prior to crating
and was in operating condition. If the heater has incurred any damage in
shipment, document the damage with the transporting agency and contact
an authorized Reznor Distributor. If you are an authorized Distributor, fol-
low the FOB freight policy procedures as published by Thomas & Betts for
Reznor products.
Check the rating plate for the gas specifications and electrical character
-
istics of the heater to be sure that they are compatible with the gas and
electric supplies at the installation site. A conversion kit is included with the
heater for converting for use with propane; see instructions in Paragraph
7.1.4.
Read this booklet and become familiar with the installation requirements of
your particular heater. If you do not have knowledge of local requirements,
check with the local gas company or any other local agencies who might
have requirements concerning this installation.
Before beginning, make preparations for necessary supplies, tools, and
manpower. Be sure that the vent/combustion air kit (either vertical Option
CC2 or horizontal Option CC6) is at the job site.
If the installation includes optional vertical louvers, downturn nozzle, and/or
a hanger kit, install these options before the heater is suspended. Instruc-
tions are in this form or in the option package; option packages are shipped
separately.
Other shipped-separate items could include a thermostat bracket kit, a
thermostat, and/or a thermostat guard. Be sure all options ordered are at
the installation site.
4.1
Clearances
Units must be installed so that the clearances in the table are provided
for combustion air space, inspection and service, and for proper spacing
from combustible construction. Clearance to combustibles is defined as the
minimum distance from the heater to a surface or object that is necessary
to ensure that a surface temperature of 90°F above the surrounding ambi-
ent temperature is not exceeded.
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 floor.
IMPORTANT: Shipping
brackets are attached with
cabinet screws. When
removing shipping brack
-
ets, re-insert ALL screws
into the cabinet.
Form I-UEAS, Page 6
