Weil-McLain GOLD DV WATER BOILER manual IId Prepare boiler high altitude kit, When required

GOLD GV Water boiler series 3 — manual

IId Prepare boiler — high altitude kit

Obtain high altitude kit

Install high altitude air pressure switch

Check gas valve outlet pressure

When required

For installations at altitude more than 5,500 feet above sea level, a special high altitude air pressure switch is required. In addition, the gas valve outlet pressure setting must be checked, and adjusted if necessary, per the instructions in manual Section VIIf, altitude over 5,500 feet.

Obtain the GV high altitude kit from your local Weil- McLain distributor. This kit includes the high altitude air pressure switch and a special tool needed for accessing the adjusting screw on some gas valves. The kit also includes tubing fittings as described in manual.

1.See Figure 5c (switch shown with wires removed).

2.Remove the two (RED) control wires from the air pressure switch spade terminals.

3.Remove the factory-installed air pressure switch (loosen top screw and remove bottom screw holding switch to jacket interior panel).

4.Install the high altitude air pressure switch in the same location.

5.Carefully replace the hoses on the new switch, with the red hose on the hose barb closest to the interior panel, as shown in Figure 5c. The white hose goes on the outer hose barb.

6.Replace the two (RED) control wires on the new pressure switch spade terminals.

After following the start-up procedures of manual Section VII, follow the procedures of Section VIIf to measure gas valve outlet pressure and adjust if necessary.

Failure to check gas valve outlet pressure and adjust, if necessary, could result in severe personal injury, death or substantial property damage. Carefully follow the guidelines given in this manual.

20 Part number 550-141-850/0699