Armstrong International
IOM-706 V2.0
Flo-Direct Water Heater
Commissioning
Page 28 of 45
Commissioning
Inspecting Installation
1
Confirm all checks in start-up checklist above.
2
Check all field connections in control panels.
3
Identify any additional wiring in panels.
4
Confirm rotation of blower and pump motors.
5
Confirm what fuel is supplied and note label on fuel train.
Inspecting Water System
Note:
Run cold water first to prevent damage in lower canister.
1
Jump valve to bypass automatic control.
2
Turn "MANUAL/OFF/AUTO" switch on control panel to
"MANUAL," but do not press "MANUAL START."
3
Set water inlet pressure to about 20 psi.
4
Set outlet pressure at pump to 40 psi, with bypass off.
5
Visually confirm proper flow.
6
Check for leaks.
7
Confirm adequate pressure.
8
Confirm pump operation.
9
Close water valve.
10
Set main water valve to normal operation.
Commissioning
1
Turn on fuel.
• Check for leaks in piping
• Verify that gas pressure is between 2 and 7 psi
Note
: Start-up process requires running heater in "MANUAL" mode,
which overrides all automation and produces hot water continuously
until heater is manually turned off.
Never leave heater unattended in "MANUAL" mode.
