Aerco INNOVATION INN1060, Руководство пользователя

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Chapter 2
Innovation Series Water Heaters
GF-128
Installation USER MANUAL
OMM-0079_0B
07/21/11 AERCO International, Inc.
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100 Oritani Dr.
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Blauvelt, NY 10913
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Ph: 800-526-0288 Page 25 of 200
2.12.9 FAULT RELAY
The fault relay is a single pole double throw (SPDT) relay having a normally open and normally closed set
of relay contacts that are rated for 5 amps at 120 VAC and 5 amps at 30 VDC. The relay energizes when
any fault condition occurs and remains energized until the fault is cleared and the
CLEAR button is
depressed. The fault relay connections are shown in Figure 2-12.
2.12.10 AUXILIARY RELAY CONTACTS
Each unit is equipped with a single pole double throw (SPDT) 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 2-12 to locate the AUX RELAY
terminals for wiring connections.
2.13 FLUE GAS VENT INSTALLATION
AERCO Gas Fired Venting and Combustion Air Guide, GF-5050 (see Appendix K) must be consulted
before any flue or combustion air venting is designed or installed. Suitable, U/L 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 of 1.9” W.C. 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 Heatfab Division of the Selkirk Corporation provides vent systems
which conform to all applicable requirements for installations within the Commonwealth of Massachusetts.
Contact information for this supplier is as follows:
Selkirk Corporation
Heatfab Division
130 Industrial Blvd.
Turners Falls, MA 01376
Phone: 1-800-772-0739
www.heat-fab.com
2.14 COMBUSTION AIR
The AERCO Gas-Fired Heater 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.
The more common methods of combustion air supply are outlined in the following paragraphs. For
combustion air supply from ducting, consult the AERCO GF-5050, Gas Fired Venting and Combustion Air
Guide.