Flame Detector; Combustion Calibration; Safety Device Testing; Fireside Inspection - Watts Aerco Innovation 800 User Manual

Innovation Hot Water Hot Water Boiler User Manual

6.3 FLAME DETECTOR

Flame detector (Kit P/N 24356-2) is used on ALL Innovation Hot Water Boiler models. The flame
detector is also located on the flange of the intake manifold as shown in Figures 6-1 and 6-2. The
flame detector may be hot. Allow the unit to cool sufficiently before removing the flame detector.
To inspect or replace the flame detector:
1. Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power
from the unit.
2. Remove the side and rear panels from the unit.
3. Disconnect the flame detector lead wire.
4. Remove the two (2) hex standoffs securing the flame detector to the intake manifold
(Figures 6-1 and 6-2). The flame detector is secured to the burner intake manifold with one
(1) #10-32 and one (1) #8-32 hex standoff.
5. Remove the flame detector and gasket from the manifold flange.
6. Thoroughly inspect the flame detector. If eroded, the detector should be replaced.
Otherwise, clean the detector with a fine emery cloth.
7. Reinstall the flame detector and flame detector gasket.
8. Reconnect the flame detector lead wire.
9. Reinstall the side and rear panels on the unit.

6.4 COMBUSTION CALIBRATION

Combustion settings must be checked at the intervals shown in Table 6-1 as part of the
maintenance requirements. Refer to Chapter 4 for combustion calibration instructions.

6.5 SAFETY DEVICE TESTING

Systematic and thorough tests of the operating and safety devices should be performed to ensure
that they are operating as designed. Also, certain code requirements specify that these tests be
performed on a scheduled basis. Test schedules must conform to local jurisdictions. The results
of the tests should be recorded in a log book. See Chapter 5 for Safety Device Test Procedures.

6.6 FIRESIDE INSPECTION

Fireside inspection of the Innovation Hot Water Boiler includes removing the exhaust manifold,
intake manifold, and the burner assembly from the unit.
The purpose of this inspection is to check for the formation of deposits on the inside of the heat
exchanger tubes, exhaust manifold, and/or the burner assembly. These deposits can be caused
by the presence of even trace amounts of chlorides and/or sulfur, in the combustion air and fuel
sources. Such deposits can be influenced by the extent of the condensing operation and the
chloride and sulfur levels that can vary significantly from application to application.
Page 74 of 174
11/15/2016
CHAPTER 6 – MAINTENANCE
Flame Detector Inspection/Replacement
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
- INTERNATIONAL
OMM-0120_0A
GF-128-I