INSTALLATION
2-3
2.3.3 CONDENSATE PIPING
The Benchmark boiler is designed to condense
water vapor from the flue products and the
installation must have provisions for suitable
waste drainage or collection. A drain connection
provided on the exhaust manifold, (see Fig 2.6)
directs condensate from the exhaust manifold to
a 3/4 inch NPT condensate drain trap. The
condensate drain trap and associated fittings are
shipped loose and should be installed on the
exhaust manifold in rear of the unit. (See Fig.
2.6 for installation details.) Condensate drainage
from the condensate drain trap must be by
gravity to a nearby floor drain via a
polypropylene hose or suitable piping
.
If a floor drain is not available, a condensate
pump can be used to remove the condensate to
drain. The maximum condensate flow rate is 11
GPH. The condensate drain trap, associated
fittings and drain line must be removable for
routine maintenance. Do not hard pipe.
2.4. GAS SUPPLY PIPING
The AERCO
Gas Fired Equipment Gas
Components and Supply Design Guide (GF-
1030) must be consulted before any gas piping
is designed or started.
WARNING!
DO NOT USE MATCHES, CANDLES,
FLAMES OR OTHER SOURCES OF
IGNITION TO CHECK FOR GAS LEAKS
.
CAUTION!
Many soaps used for gas pipe leak testing
are corrosive to metals. The piping must be
rinsed thoroughly with clean water after leak
checks have been completed
.
NOTE:
All gas piping must be arranged so that it
does not interfere with removal of any
cover, inhibit service or maintenance, or
prevent access between the Unit and walls,
or another unit.
Figure 2.6
Condensate Drain Connection Location
The location of the 2" inlet gas connection is
located on the rear of the unit as shown in
Figure 2.7.
All pipes should be de-burred and internally
cleared of any scale or iron chips before
installation. No flexible connectors or non-
approved gas fittings should be installed. Piping
should be supported from floor, ceiling or walls
only and must not be secured to the unit.
A suitable piping compound, approved for use
with natural gas, should be used sparingly. Any
excess must be wiped off to prevent clogging of
components.
EXHAUST MANIFOLD
1/2"NPT CONDENSATE DRAIN CONN.
3/4" NPT EXHAUST GAS
CONDENSATE DRAIN CONN.
Summary of Contents for Benchmark G-00-711
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