37
Testing A Heater
1.
Hook up water and check Airband
2.
Plug in machine
3.
Hook up fuel lines
4.
Put on discharge hose
5.
Open discharge
6.
Make sure bypass is closed
7.
Open water in gate
8.
Turn on water
a.
Load regulator about 2 ½ turns
9.
Turn on unit
10.
Check GFI
11.
Check electric valve
a.
Water should flow
12.
Wait for output light to come on
13.
Red lights come on
a.
Check temperature, both should be within 1-2 degrees
of each other
b.
Unit must level
14.
Set secondary differential to 15
15.
Set secondary set point to 125
a.
Output light should come on
i.
Contactor should close
16.
Set primary differential to 2
17.
Set primary set point to 120
18.
Check flow switch by turning off water using gate valve
a.
Unit should shut down
19.
Turn water back on
