Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 2 – INSTALLATION
OMM-0078_0M
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
33
of
216
GF-128
Phone: 800-526-0288
09/11/2015
2.12.13 FAULT RELAY Terminals
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.
2.12.14 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 2-12 to locate the AUX RELAY terminals (N.C., COM, & N.O.) for wiring
connections.
2.13 FLUE GAS VENT INSTALLATION
AERCO Gas Fired Venting and Combustion Air Guide, GF-5050 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" (0.64 cm) per foot (0.3m) to avoid any condensate pooling
and to allow for proper drainage. In addition, you must add a bead of high temperature red
silicon sealant (such as Permatex Hi-Temp Red RTV or Loctite Superflex Red High Temp RTV)
between the exhaust manifold and the mating flange of the exhaust connector, as shown in
Figure 2-13.
Figure 2-13. Exhaust Vent Connection
VENT PIPE
WORM-DRIVE HOSE CLAMP
EXHAUST CONNECTOR
1/4" CAP SCREW [4X]
1/4" FLAT WASHER [4X]
CLEAN BOTH
SURFACES, THEN
APPLY HIGH TEMP
RED SILICON
SEALANT HERE
EXHAUST MANIFOLD
