Appendix; Hiflo Auto Ignition "G" Series Addendum; Features Of Honeywell Integrated Control System; Specifications - andrews 24/39 Installation And Service Manual

10 Appendix

10.1 HIflo auto ignition "G" series addendum

10.2 Specifications

Power Supply
Current Draw
Gas Supply Connection
for
Approved Gas Type
Minimum Clearance for Servicing 610mm Front Clearance, 508mm Top, 152mm Sides.
Maximum Water Supply Pressure 150 PSI.
Thermostat Sensor(s)
Control Board
Control Display
Transformer
Pilot
Flue Damper
Issue 2 14/07/16
Dedicated 120 VAC, 60 Hz., 15 A
Less than 5 Amps.
25mm NPT connection to gas valve for 370,000 Btu/hr. and over for natural gas, 19mm NPT
rest. Schedule 40 black iron pipe recommended.
Natural or Propane. Gas supply must match the gas type listed on the water heater rating
label.
Redundant thermistor with 11,900 + or - 0.5% ohms resistance at 21°C. Sensor inside
well for lower sensor. Some models use an additional upper sensor (w/o well) with same
resistance values.
Honeywell Integrated Control Board for Temperature Control, Flue Damper, and Ignition
Control Functions. Operates on 24 volts AC current from transformer. Some models use
single sensor boards, others use two sensors.
Honeywell LCD Control Display with Temperature Setpoint, Format, and Error Code Display
in User Mode, Diagnostic Functions in Service Mode. Communicates with Control Board.
120 VAC Primary, 24 VAC Secondary, 40 VA.
Intermittent Pilot with Spark Electrode and Flame Sensor monitored by Control Board.
24 VAC, 60 Hz., 80 Ma.
10.1.1 Features of Honeywell integrated controls
system
• Attractive digital water heater display on control panel for
setting and displaying the temperature setpoint. Pressing
temperature up and down buttons changes the temperature
setpoint. Temperature format may be displayed in degrees F
or degrees C.
• Single control board with plug in wiring controls temperature,
ignition, and flue damper operation.
• Reduced number of parts for servicing and wiring.
• Plug in wiring reduces chance of miswiring.
• Water heater display will show diagnostic codes in the event
the water heater needs servicing. Aids in diagnosing and
servicing the water heater.
• Water heater display can show up to 10 previous error codes
in the service mode to further aid in servicing the water
heater.
Appendix 10
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