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WARNING
Burn and scald hazard. Boiler supplied with dust caps
on supply and return tappings (4). Shall remove all
four (4) caps and plumb before filling boiler with
water. Failure to follow these instructions could result
in death or serious injury.
4.1 Connection Locations
• Boiler has one supply and one return tapping on each
side (4 total). Boiler supplied with dust caps only.
Remove all four (4) caps and plumb before filling boiler
with water.
Figure 4-1 Piping Options
THIS BOILER HAS TWO SUPPLY (OUTLET) AND TWO RETURN (INLET) TAPPINGS.
SUPPLY
RETURN
4 - CONNECTING SUPPLY & RETURN PIPING
PIPING OPTIONS
PIPE SUPPLY AND RETURN ON THE SAME SIDE (FIG. 1 & 2)
This boiler has two supply (outlet) and Two return (inlet) tappings.
DO NOT CROSS PIPE!
Pipe supply and return on the same side (see Fig. A and B)
Do not cross pipe - (see Fig. C and d)
FRONT
FIG 1.
. A
FRONT
FIG 3.
. C
• Supply and return may be piped to either side of boiler,
as desired. Both supply and return shall be on same
side of boiler. Do not "cross pipe" as boiler may not
deliver adequate heat with cross piping. See Figure 4-1.
• ASME relief valve may be located off unused
supply tapping IN UPRIGHT POSITION ONLY.
• Drain valve may, as an option, be located on the return
line using a contractor supplied tee, piped right or left.
See Figure 4-3.
• Unused supply and return tappings may be capped, as
desired. Relief valve and drain valve may be located on
near boiler piping using contractor supplied tees with no
valves.
Piping Options
(FIG 3 & FIG 4)
FRONT
FIG. 2
FRONT
FIG 4.
9
SUPPLY
RETURN
. B
. D
PN 240012809, Rev. D [08/15/2021]
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