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Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 4
– INITIAL START-UP
OMM-0143_A
• GF
-216
•
9/6/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 59 of 170
4.3 COMBUSTION CALIBRATION
Innovation Water Heaters are combustion calibrated at the factory prior to shipping. However,
recalibration is necessary as part of initial start-up due to changes in the local altitude, gas BTU
(kW) content, gas supply piping and supply regulators. It is important to perform the combustion
calibration procedure, as it provides optimum performance and keep readjustments to a
minimum. Start-Up & Registration Test Data sheets are shipped with each unit. These sheets
must be filled out and returned to AERCO for proper Warranty Validation.
The unit is shipped from the factory set up for Natural Gas, as specified by the Style Number on
the Sales Order. Both fuel types require different combustion calibration values, but are otherwise
identical.
If you press the
Back
or
Home
buttons at any time before completion, the calibration operation is
disabled and normal operation resumes.
Complete the instructions below to perform combustion calibration.
Combustion Calibration Instructions
1.
Ensure that the Controller’s Enable/Disable switch is set to
Disable
.
2. Ensure that external AC power to the unit is
ON
.
3. Ensure that the water supply and return valves to the unit are open and that the system
pumps are running.
4. Open the main manual gas supply shut-off valve upstream of the unit.
5. On the Controller, go to:
Main Menu
→
Calibration
→
Combustion
.
6. The first
Combustion Calibration
screen appears lists the three steps that must be
completed before continuing. Complete these steps then press
Next
to continue.
Figure 4.3-1: First Combustion Calibration Screen
•
Verify
that the incoming (upstream) gas pressure to the unit is within the allowable
range, per the
Innovation-Edge Gas Supply Design Guide
(TAG-0091, GF-5036).
•
Install the following devices on the unit:
o
A gas pressure manometer
downstream
of the SSOV (see Section 4.2.2).
o
A combustion analyzer probe in the exhaust manifold (see Section 4.2.3).
o
A multimeter to read flame strength and combustion analysis (see Section 4.2.4).
•
Ensure the unit has sufficient heat dissipation at full fire to avoid over-temperature
conditions. If demand is low, you can reduce the amount of heat that needs to be
dissipated, either by completing combustion calibration quickly or using a hose
attached to the drain valve on the hot water outlet to generate additional flow.