Slant/Fin Jaguar - Manual (Page 14)

Jaguar Caravan Multiple and Cascading Boilers 14
7. CONDENSATE REMOVAL SYSTEM
The Jaguar J-390C boiler is equipped with a built-in condensation
drain and trap system. This system consists of two traps, one
being dedicated to the condensate produced by the boiler, and
another being dedicated to the condensate produced within the
vent piping. Both of these traps must be filled with water. This is
most easily accomplished by pouring water from a small container
into the vent connector at the top of the boiler, before the vent pipe
is attached, until the tubing loop trap in the rear of the boiler is vis-
ibly filled. DO NOT operate the boiler without filling the trap with
water to prevent flue gas discharge into space. Periodic inspection
should be made of this assembly for deterioration of the tubing
and components, and to insure that the traps are not plugged. If
any part is plugged or appears to have excessive sediment within,
it should be removed from the drain assembly, have the obstruc-
tion cleared, refilled with water and reinstalled as before.
A 3/4” PVC tee assembly, located in the rear of the boiler jacket, is
provided to run the condensate liquid from the boiler. Connect the
plastic tubing that will be run to the drain to the bottom take-off of
the tee. Leave the top take-off of the tee open, to act as a vacuum
breaker. If the building drain is above the bottom portion of the tee,
a condensate removal pump will be required. This pump must
have an overflow switch, and be compatible with the acidic con-
densate liquid, as must all fittings and the tubing used in this con-
densate removal system. (See Figure 9).
No part of the condensate removal system can be exposed to
freezing temperatures, or any other conditions that could cause
blockage. DO NOT run drain tubing to the outside of the building.
In addition, certain jurisdictions or drain pipe materials may require
a neutralization unit to be installed in the condensate removal sys-
tem. Any piping other than plastic types will be subject to corrosion
or deterioration from the acidic condensate, which may have a pH
level as low as 3.0. A condensate filter containing lime, marble, or
phosphate chips can neutralize the condensate to a pH level
above 6.5, which is safe for all drain piping materials. (See Figure
9). The neutralizing filter medium will require periodic changing, to
ensure it’s affectiveness. Replacing the medium on an annual
basis is recommended, or refer to the manufacturer’s instructions
for systems that are available for neutralizing condensate.
COMMONWEALTH OF MASSACHUSETTS SPECIAL
REQUIREMENT
When the Jaguar J-390C is installed and used in the
Commonwealth of Massachusetts, a neutralization unit MUST be
installed in the condensate removal system.
8. WATER PIPING AND
Jaguar Multiple Boiler Systems utilize primary/secondary piping.
Jaguar boilers require a minimum of 17.5 gallons per minute water
flow rate. A primary loop circulator is factory supplied with each
Jaguar boiler, this circulator should be used in the boilers primary
loop. Listed below is a chart listing the Jaguar boiler’s pressure
drop based on GPM flow rate, this chart also lists water tempera-
ture rise based on maximum gas input.
PIPING AND WATER FLOW
Good system design addresses flow rates through boilers. It is
possible to have too little flow and too much flow. Most boiler sys-
tem designs are based on a 20˚F to 30˚F temperature rise in the
boiler when it is firing at full input.
When the flow rate is too high through a module the water flow
tends to short circuit from the return tapping to the supply tapping
of a module. When flow rate is too high the boiler efficiency may
drop and there is excess electrical consumption by the circulator.
Primary/secondary piping is required for multiple Jaguar boilers.
This method ensures that each boiler will receive the same inlet
water temperature, and only the boilers that are firing will have
water flowing through them. Each boiler must have a dedicated
circulator piped on it’s primary loop. See figures 10 and 11 for the
location of components and piping layout.
If isolation valves are installed in the individual boiler piping to the
common headers, a dedicated manual reset low water cutoff and
manual reset high limit must be installed on each boiler’s piping,
as close to the boiler as possible and beneath the isolation valves.
See figures 10 and 11.
The primary loop must have its own pump, water that is flowing in
the primary loop will not flow into the secondary circuit
NEUTRALIZING UNIT (IF REQUIRED)
CONDENSATE PUMP (IF REQUIRED)
DRAIN INSIDE BUILDING
PLASTIC TUBING
DRAIN VACUUM BREAKER, LEAVE OPEN
Figure 9. Condensate disposal system
Flow
Rate
(gpm)
Temp
Rise
(˚F)
Boiler
Head
Loss
(Feet w.c.)
28.0 25˚ 16
23.5 30˚ 11.5
20.0 35˚ 8.5
17.5* 40˚ 7.0
Boiler Pressure Drop
* Minimum flow rate recommended.
Jaguar Multiple Boiler
System may be piped
using Slant/Fin supplied
headers or by using field
piped primary boiler
loops.