Lochinvar EcoForce EF100, Installation, Commissioning, User And Maintenance Instructions

Page: 94 / 120

94
A
DJUSTMENTS
F
OR
N
EW
W
ATER
H
EATERS
O
R
A
FTER
A S
ERVICE
(C
ASE
A)
General remark
For all adjusting steps under A the following must be applied: as long as measured CO
2
values differ less than 0.3% from the table values, no
adjustment is necessary, because this deviation is typical for the process (O
2
values: ± 0.5%). If, however, larger deviations are measured,
adjustment now must be made until the table value is reached within max. 0.1% deviation (O
2
values: ± 0.2%).
Adjusting at maximum load
Adjust at maximum load by carrying out procedure 1, 21.8.1
Adjusting at minimum load
Adjust at minimum load by carrying out procedure 2, 21.8.2
A
DJUSTING AFTER GAS VALVE REPLACEMENT
,
OR IN CASE OF GAS CONVERSION
(
CASE
B)
The maximum fan speed has to be reduced to convert the water heater into a Propane or Propane/Butane (B/P)
appliance (set parameter P4BD).
General remarks
In case B, a distinction is made between the settings of water heaters containing a single valve (EF80-EF100) and water heaters containing a
double valve (EF120-EF180).
All adjustments must result in CO
2
percentages within a bandwidth of max. ± 0.1% deviation from the table values (O
2
values: ± 0.2%).
Adjusting at maximum load EF80 / EF100
The water heaters EF80 and EF100 all have single gas valves.

First, turn setting screw [2] of the gas valve clockwise until you feel resistance. This means that the valve is closed; do not try to tighten
the screw any further.

Now turn screw [2] counter clockwise (open), according to the number of turns in table 2 for the used water heater and gas type.
After this, adjust at maximum load by carrying out procedure 1, 21.8.1
If the burner doesn’t start up in service mode, turn screw [2] a quarter turn counter clockwise further open, and try again.
Adjusting at minimum load EF80 / EF100
Adjust at minimum load by carrying out procedure 2, 21.8.2
IMPORTANT: Toggle between high fire and low fire to make fine-tuning adjustments (adjusting the minimum setting affects the maximum
setting and vice-versa).
C
HECKING AND ADJUSTING AT MAXIMUM LOAD
EF120 / EF150 / EF180
The water heaters EF120, EF150 and EF180 all have double gas valves.
First connect a manometer to “p-out” = measuring point [4] of the left gas valve. Now, turn setting screws [2] of both gas valves clockwise until
you feel resistance. This means that the valves are closed; do not try to tighten the screws any further in the closed position.

After this, turn screws [2] of both left and right hand gas valve counter clockwise (open), according to the number of turns in table 2 for
the used water heater and gas type.
From now on only use the right hand gas valve for adjustments on high fire.
Adjust the right hand valve at maximum load by carrying out procedure 1, 21.8.1.
If the burner doesn’t start up in service mode, turn screw [2] a quarter turn counter clockwise further open, and try again.
IMPORTANT: Toggle between high fire and low fire to make fine-tuning adjustments (adjusting the minimum setting affects the maximum
setting and vice-versa).