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Part number 550-141-850/069920
GOLD GV Water boiler series 3 — manualGOLD GV Water boiler series 3 — manual
GOLD GV Water boiler series 3 — manualGOLD GV Water boiler series 3 — manual
GOLD GV Water boiler series 3 — manual
Prepare boiler — high altitude kit
When requiredWhen required
When requiredWhen required
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.
Obtain high altitude
kit
IId
Install high altitude
air pressure switch
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.
Check gas valve
outlet pressure
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.