Installation Instructions

Installation Manual
Page
25
1. Turn off all electric power to the micro-boiler if service is to be performed.
2. Turn the manual gas valve located on the outside of the micro-boiler to
the off position.
-Measuring inlet gas pressure-
The micro-boiler cannot perform properly without sufcient inlet gas pressure. Below are
instructions on how to check the inlet gas pressure. THIS IS ONLY TO BE DONE BY A LICENSED
PROFESSIONAL.
• Shut off the manual gas valve on the gas supply line.
• Remove the screw from the pressure port located on the gas inlet of the micro-boiler shown in the
diagram on the right.
• Connect the manometer to the pressure port.
• Re-open the manual gas valve. Check to see that there are no gas leaks. Take a reading of the
gas pressure. Turn up a room thermostat to activate the boiler.
• Check the inlet gas pressure. Take another reading. When the micro-boiler is on maximum and
minimum burn, the manometer should read from 5.0” to 10.5” W.C. (1.24 to 2.61 kPa) for Natural
gas, or from 8.0” to 14.0” W.C. (1.99 to 3.48 kPa) for Propane. Verify that the pressure drop is
acceptable.
Installation - Gas
1
2
3
5
4
10.0"
W.C.
Pressure Port