AERCO RECON 1000 - Manual (Page 36)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
Page 36 of 178 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0103_0A
PRI: 10/28/2014 Phone: 800-526-0288 GF-147
2.12.14 AUX RELAY Terminals
Each unit is equipped with a single pole double throw (SPDT) auxiliary relay that is energized
when there is a demand for heat and de-energized after the demand for heat is satisfied. The
relay is provided for the control of auxiliary equipment, such as pumps and louvers, or can be
used as a unit status indictor (firing or not firing). Its contacts are rated for 120 VAC @ 5 amps.
Refer to Figure 2-14 to locate the AUX RELAY terminals (N.C., COM, & N.O.) for wiring
connections.
2.13 FLUE GAS VENT INSTALLATION
The Innovation and RECON Venting and Combustion Air Guide, GF-5050 must be consulted
before any flue or combustion air venting is designed or installed – please contact the factory to
request a copy of this guide. Suitable, UL approved, positive pressure, watertight vent materials
MUST be used for safety and UL certification. Because the unit is capable of discharging low
temperature exhaust gases, the flue must be pitched back towards the unit a minimum of 1/4"
per foot to avoid any condensate pooling and to allow for proper drainage.
While there is a positive flue pressure during operation, the combined pressure drop of vent and
combustion air systems must not exceed 140 equivalent feet or 0.81” W.C with 6” piping.
Fittings as well as pipe lengths must be calculated as part of the equivalent length. For a natural
draft installation the draft must not exceed - 0.10” W.C. These factors must be planned into the
vent installation. If the maximum allowable equivalent lengths of piping are exceeded, the unit
will not operate properly or reliably.
For Massachusetts installations, the following companies provide vent systems which conform
to all applicable requirements for installations within the Commonwealth of Massachusetts.
Contact information is as follows:
Selkirk Corporation - Heatfab Division
130 Industrial Blvd.
Turners Falls, MA 01376
Phone: 1-800-772-0739
www.heat-fab.com
Watertown Supply
33Grove St.
Watertown, MA 02472
Phone: (617) 924-2840
http://www.watertownsupply.com/
M. A. Peacard
1250 Massachusetts Ave.
Boston MA 02125-1689
Phone: (617) 288-0629
www.mapeacard.com
Glover Sheet Metal, Inc.
44 Riverdale Ave.
Newton, MA 02485
Phone: (617) 527-8178
www.gloversheetmetal.com
2.14 COMBUSTION AIR
The Innovation and RECON Venting and Combustion Air Guide, GF-5050, MUST be consulted
before any flue or inlet air venting is designed or installed. Air supply is a direct requirement of
ANSI 223.1, NFPA-54, CSA B149.1 and local codes. These codes should be consulted before a
permanent design is determined.
The combustion air must be free of chlorine, halogenated hydrocarbons or other chemicals that
can become hazardous when used in gas-fired equipment. Common sources of these
compounds are swimming pools, degreasing compounds, plastic processing, and refrigerants.
Whenever the environment contains these types of chemicals, combustion air MUST be
supplied from a clean area outdoors for the protection and longevity of the equipment and
warranty validation.