Setting Screws Gas Valve(S): Drawings - Lochinvar EcoForce EF80 Installation, Commissioning, User And Maintenance Instructions

S
ETTING SCREWS GAS VALVE
NOTICE: Do NOT mistake the screw marked 'PILOT' for screw 2.
 Screw 2 is the SMALL screw immediately next to the pilot screw.
3
EV1
1
EV2
80 & 100
21.3.1 Adjustments to the gas valve
General scheme for adjustment of gas valve(s). Check this scheme for an overview.
To complete all necessary adjustments in right order, follow case A or B top-down through the scheme (B involves a few extra steps (grey
fields)):
Water heater returns to NORMAL MODE after 40 min. OR by pressing [SERVICE] button
* in case of a double valve (EF120, 150 and 180)
For an extensive description consult the next two sections (choose which is applicable, A or B):
( ):
S DRAWINGS
4
1
2
GENERAL SCHEME SETTING STEPS
case A
continue ↓
continue ↓
[▲] set burner at maximum load
continue ↓
[▼] set burner at minimum load
keep repeating until values match table values best
3
EV1 EV1
1
2
EV2 EV2
120
first close (both*) screw(s) [2], then set them in
accordance with table 2
SWITCH TO SERVICE MODE
If burner doesn't start, open (RIGHT*) screw[2] ¼
turn extra
setting at maximum load
measure CO at flue gas outlet;
2
use (RIGHT*) screw [2] to
match value with table 1
CO2 [2]
CO2 [2]
setting at minimum load
only 
EF120,
150, 180
measure CO at flue gas outlet;
2
use (RIGHT*) screw [1] to
match value with table 1
[1]
CO2
CO2 [1]
repeat procedure 1
repeat procedure 2
1
4
150 & 180
case B
[▼] set burner at minimum load
use LEFT screw [1] to match "p-out"
with table 3
2
1
3
93