Weil-McLain GV Boiler Replacement Instructions

The following terms are used in these instructions to bring attention to presence of hazards of various risk levels, or to important
information concerning the life of the product.
Indicates presence of hazard which
WARNING
can cause severe personal injury,
death or substantial property damage.
Failure to follow items below can cause severe personal injury, death or substantial property damage:
WARNING
These instructions are for use by a qualified installer/service technician. Follow all instructions in proper order.
Shut off main gas valve and disconnect electricity to boiler.
Wait until boiler is cooled down before proceeding with replacement.
Contents of Kit:
Ignitor Replacement Kit
Studs, nuts, washers, adapters, flange gaskets pump/
return water tubing
Square cut seals, silicone sealant
Instructions
Instructions for blower motor/replacement
1. Remove jacket top and front panels. Lay aside boiler
insulation.
2. Close isolation valves between boiler and system.
Drain boiler.
3. Remove:
All wiring connectors from control tray.
Control tray (if applicable).
External system gas and water piping from boiler.
Thermostat wiring.
External vent piping.
External combustion air piping, if used.
Vent condensate drain hose.
Blower assembly and burner. See "Blower Assembly
or Burner Replacement Instructions," part number
550-141-608, packed with kit.
High limit control and well.
External relief valve piping.
External air vent piping (if used).
Remaining outside and interior jacket panels.
Block temperature limit switch.
Circulator(s).
4. Tilt block assembly onto back section to rest on 2
short pieces of 2 x 4's.
Section block is heavy - care must be
CAUTION
taken in moving to avoid personal
injury.
5. Remove drain valve and all other remaining piping on
front section.
6. Remove vent ell and clean silicone sealant from vent
ell (Series 1 & 2 only).
GV BOILER GV BOILER
GV BOILER
GV BOILER GV BOILER
Front Section Repair Kit
Part Number 382-200-300 for Series 1 & 2
Part Number 382-200-300 for Series 3 & 4
Replacement Instructions Replacement Instructions
Replacement Instructions Replacement Instructions Replacement Instructions
Indicates presence of hazard which will
CAUTION
or can cause minor personal injury or
property damage.
7. Remove base rail assembly and tie rods from block
assembly.
8. Remove front section from block and remove
silicone sealant from mating intermediate section.
9. Clean new front section and mating intermediate
section of any oil and dirt - silicone sealant will not
adhere properly.
10. Clean square cut sealing surfaces on new and
mating sections.
Do not use any cleaner containing
CAUTION
petroleum-based distillate (oil). Square
cut seal failure will occur.
11. Apply bead of silicone sealant around perimeter of
intermediate section, NOT on inside of waterway holes
(see Figure 1).
Figure 1
12. Insert new square cut seals.
13. Align front section and lay it on top of intermediate
section.
Part number 550-141-589/0501
Silicone
Sealant
Do Not
Apply
Silicone
Sealant
Here
Do Not
Apply
Silicone
Sealant
Here