A.O. Smith ADMR - 40, Installation, User And Service Manual

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Installation
34 Instruction manual ADMR
3
is
Gas control for ADMR 135
3.11.1 Preparation
1. Isolate the appliance from the power supply (10.3 "Electrically isolating the
appliance").
2. There are two test nipples on the gas control. Test nipple (6) is used to check
the supply pressure. The other test nipple on the gas control is not used. The
manifold test nipple (8) is used to measure the burner pressure.
Sealing screws are located inside the test nipples. Loosen both sealing
screws by a few turns. Do not completely loosen them; they can be difficult
to re-tighten.
3. Connect a pressure gauge to the manifold test nipple (8).
4. Open the gas supply and bleed the air from the mains gas supply via test
nipple (6).
5. Connect a pressure gauge to the manifold test nipple (6) when gas starts to
flow from this nipple.
6. Switch on the power to the appliance using the isolator on the appliance.
7. Switch the electronic controller
ON by setting the 0/I switch to position I .
Legend
Only applicable numbers are
mentioned.
1. burner pressure regulator
2. burner pressure regulator cap
3. burner pressure regulator
adjustment screw
6. supply pressure test nipple
7. gas control
8. manifold test nipple
9. high-low control
1
9
6
7
8
2
3
IMD-0129 R1