Groen CC20-E Operator's Manual page 306

Maintenance
Replacement Procedures
Removal
1. Remove the boiler manifold (see page 8-52). At step 8, remove the
flame holders and jets. Install correct size boiler jets as specified on
page 4-2 (for CC10-G) or page 5-2 (for CC20-G), and replace the
flame holders.
2. Remove the main gas valve (see page 8-54). if you are changing the
orifices because of a change in the type of gas being used, the gas
pressure regulator mounted on the gas valve must also be replaced.
Remove pressure regulator and regulator gasket from the main gas
valve.
Contact Groen to obtain the correct gas pressure regulator and
regulator gasket.
3. Remove the oven manifold (see page 8-56). At step 4, remove the
flame holders and jets. Install correct size oven jets as specified on
page 4-2 or 5-2 and replace the flame holders.
Installation
1. Install pilot runner tube (see page 8-57).
2. Install oven manifold (see page 8-56, steps 1, 2 and 3).
3. If the gas pressure regulator was removed, install the correct
regulator, and regulator gasket on the main gas valve. Apply a small
amount of high temperature anti-seize compound to the threads of
the two regulator mounting screws.
4. Install the main gas valve (see page 8-55, steps 1 through 7).
5. Install boiler manifold (see page 8-52), but do not install right side
cover at this time.
6. Check for gas leaks at all gas line connections. DO NOT USE A
FLAME TO CHECK FOR GAS LEAKS.
7. If pressure regulator was replaced, verify manifold pressure. Refer to
page 4-1 (CC10-G) or page 5-1 (CC20-G).
8. Install right side cover.
(Revised 6/93)
8-62
NOTICE
(Revised 1/02)