AERCO Innovation (G-14-2265 and above) - Manual (Page 56)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
Page 56 of
206 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0078_0L
PRI: 11/25/2014
Phone: 800-526-0288
GF-128
Connecting Multimeter to Measure Flame Strength
1. Refer to Figure 4-3 and remove the right side panel from the unit to access the flame
detector.
2. Disconnect the flame detector wire lead #135 from the detector and connect the multimeter
in series with the wire lead using alligator clips as shown in Figure 4-3.
3. Ensure that the multimeter is set to the µA scale.
Figure 4-3. Flame Strength Set-Up Using Multimeter
IMPORTANT
The unit is shipped from the factory set up for either Natural Gas or Propane, as
specified by the Style Number on the Sales Order. Perform the appropriate
Combustion Calibration procedures in section 4.3 for Natural Gas, or section 4.4
for Propane.
4.2.5 Recommendations for Temperature Calibration
Carefully follow the procedures of section 4.4 Temperature Control Calibration, below, to
properly set up the temperature control for the heater. Ignoring this commissioning step may
cause water temperature faults, poor water temperature control, and rapid cycling of the heater.
4.2.6 Recommendations for WHM (Water Heater Management) Operation
In case of multiple Innovation units, it is highly recommended to ALWAYS operate the system in
WHM mode. Operation in WHM mode ensures that the system flow will be divided between at
least 2 or more units as demand increases. In addition, WHM ensures that all units receive equal
run time and additional water heaters are activated based on the “NEXT ON” firing rate setting.
In case of pre-heated DHW systems with multiple Innovation units, it is highly recommended to
lower the “NEXT ON” setting to 30 - 40% (Default = 50%), so that subsequent Water Heaters are
engaged sooner to provide more rapid response and divide the system flow over additional units.
In case of DHW pre-heat systems, the required temperature rise through an individual unit can be
much lower to ensure that flow per unit does not exceed 50 GPM at any time.
IGNITER-
INJECTOR
FLAME
DETECTOR
CLIP LEAD
HARNESS
WIRE LEAD
#135
CLIP LEAD MULTIMETER
BLOWER-SIDE
INTAKE MANIFOLD