Caution, Notice, Warning – Burnham V9A User Manual

Page 27

insulation and blast tube. If additional rope gasket

is not provided with the burner, use 3/8” fiberglass

rope rated for 2300°F (provided by others).

Reinstall burner mounting plate when finished.

CAUTION

Failure to properly fill all gaps between the

insulation and burner blast tube may result in

damage to the burner.

5. For boilers without tankless heaters, proceed to

Paragraph H (Install Steam Trim) or I (Install Water

Trim).

6. For boilers with tankless heaters, install the tankless

heater manifolds according to Figure 36.

STEAM BOILERS — INSTALL STEAM TRIM

Items for steam trim are located in the steam trim carton

(except for the separately ordered low water cutoff and

tankless heater control). Figure 24 shows the proper

tappings for each item.
1. Install the gauge glass set.
2. Install the low water cut-off. Follow manufacturers

instructions furnished with control.

3. Install the pressure limit control using the ¼” x 90

(1-7/8” x 4”) extended leg syphon and the ¾” NPT x

¼” FPT hex bushing.

NOTICE

The L404 Pressure Limit contains mercury in a

sealed tube. Do not place limit in the trash at the

end of its useful life.

If this limit is replacing a limit that contains

mercury in a sealed tube, do not place your old

limit in the trash.

Contact your local waste management authority

for instructions regarding recycling and the

proper disposal of this limit, or of an old limit

containing mercury in a sealed tube.

If you have questions, call Honeywell Inc. at

1-800-468-1502.

4. Level the pressure limit control by carefully bending

the syphon until the control’s leveling indicator

hangs freely with its pointer directly over the index

mark inside the back of the case.

5. Install the steam gauge using the ½” NPT x ¼” FPT

hex bushing.

6. Install the safety valve as shown in Figure 38a.

Safety valve must be installed in vertical position.

7. For boilers with tankless heaters, install the

operating control in an unused tapping through one

of the heater plates.

WARNING

Safety valve discharge piping must be piped to

within six (6) inches of floor, or to floor drain

to eliminate potential of severe burns. Do not

pipe in any area where freezing could occur. Do

not install any shut-off valves, plugs or caps in

discharge piping.

8. Plug extra boiler tappings.
9. Install required bottom blowoff/drain valve and

connecting piping (supplied by others) per minimum

piping requirements for steam boilers. See Figure

32.

WATER BOILERS - INSTALL WATER TRIM

Items for water trim are located in the water trim

carton (except for the separately ordered low water

cutoff and tankless heater control). Figure 24 shows

the proper tappings for each item.

1. Install the temperature pressure gauge.
2. Install the low water cutoff. Follow manufacturers

instructions furnished with control.

3. Install the immersion well and mount the aquastat

(limit control) onto the well.

4. Install the pressure relief valve as shown in Figure

38b. Relief valve must be installed in vertical

position.

5. Plug extra boiler tappings.
6. Install required bottom blowoff/drain valve

(supplied by others) per minimum piping

requirements for water boilers, see Figure 26.