Installation checklist for munchkin boilers – Munchkin 399M User Manual
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Installation Checklist for Munchkin Boilers
Questions relating to electrical
1.
Is there continuous 120 volts line voltage supplied to the unit?
2.
Is the line power properly polarized? (Black wire is “hot” lead)
3.
Is there and adequate ground supplied to the heater?
4.
Are we correctly using the supplied wires to power the pumps? (No shared neutrals)
Questions relating to gas
1.
Is there continuous 120 volts line voltage supplied to the unit?
2.
Is the unit set up for the correct gas type? (Propane or Natural Gas)
3.
Is the boiler properly labeled for fuel type?
4.
Do we have minimum ¾” ID pipe brought to the unit? (1¼” for 399M models)
5.
Is the entire gas piping sized adequately, including additional appliances and same gas
line?
6.
Is the regulator sized properly with an adequate distance away from the appliance?
7.
Do we have 7” W.C. when the boiler is running?
8.
Does the gas pressure stay below 14” W.C.?
9.
Is the pressure drop between static pressure (nothing running) and dynamic pressure
(unit running) less than 2” W.C.?
Questions relating to venting
1.
Is all the exhaust piping pitched back to the unit at a minimum of ¼” per foot with no
areas for condensate to pool?
2.
Is concentric vent kit glued properly?
3.
Is all venting supported?
4.
Does exhaust vent into an open area, away from inside corners, building air intakes etc?
5.
Does exhaust stay clear of intake piping and have enough separation as not to re-circu-
late flue gas?
Questions relating to condensate management
1.
Would elevating the boiler off of the floor help the condensate run?
2.
Does the condensate line slope to the drain at a minimum of ¼” per foot?
3.
Is the condensate pump installed properly?
4.
Does the condensate line have an air relief? Is the hole, located in the terminating nipple,
free and clear?
5.
Is the condensate line free of kinks?
6.
Can the condensate line potentially freeze?
7.
Is the condensate line sized properly for multiple heaters?
Questions relating to piping
1.
Is the primary pump appropriately sized to handle the boilers 1 GPM per 10,000 BTUH
total boiler output, regardless of BTU zone requirements?
2.
Have you taken into consideration the pressure drop of the vessel, the indirect coil, or
the normal piping restrictions when sizing your pumps?
3.
If installing the boiler in an existing application, is there a strainer installed to protect the
boiler from scale and particulates?
4.
Did we flush out and purge the system? Is the strainer free and clear upon leaving the
jobsite?
5.
Are you following the correct suggested piping installation drawing?
(Vision I installation -vs.- standard installation)
Questions relating to Glycol/antifreeze
Did we account for possible losses in our heat transfer rate or increased head pressures when
using the boiler with an antifreeze solution?