Form: 2435-3
Arctic Installation and Operation Manual
Revision: 10
P/N 105641-01
Date: 12-1-2018
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601
Web:
Phone:
717-239-7642
Fax:
877-501-5212
Email:
12
3.2.3
Minimum Relief Valve Settings
The minimum relief valve setting for standard
systems shall be 30 psig. The system shall
operate with no less than 26 psig at all times.
For systems designed to operate at delta T’s
greater than 40°F, the boiler shall be equipped
with a minimum relief valve setting of 60 psig.
The system shall operate with no less than 50
psig at all times. This will prevent boiler
water hammer.
3.2.4
Expansion Tank Connections
Connection(s) to an expansion tank are to be
provided by others in the system piping
separate from the boiler.
3.2.5
Drain Connection
A drain valve must be installed on the boiler
drain connection, the same pipe size as this
connection, to allow draining of the boiler.
3.2.6
Condensate Drain Connection
A condensate drain trap is shipped with the
boiler and is provided with a 1” npt
connection to drain the condensed products
of combustion from the boiler. Use Pipe with
continuous Teflon, high temperature silicone
tubing, or other tubing material compatible
with flue gas condensate. The condensate
temperature should never exceed 212
o
F and
the pH of the condensate should never have a
value lower than 3.5. NO VALVE is to be
installed in this line from the boiler to point
of discharge.
The condensate drain trap should be flushed
with water as part of your boiler maintenance
schedule to remove any debris that might
have accumulated over time.
A common condensate pump/sump may be
used. Run separate piping from each
condensate drain to the sump. A common
drain may be used to discharge condensate
from the sump. Consult pump/sump
materials of construction. If a common sump
is used, individual drain lines should be
connected such that one drain cannot back
feed into another drain. Use Table 3 for
sizing the pump / sump.
Table 3: Typical Condensate Flow Rate
Model
Max Condensate Flow (gph)
ARC1000
11.2
ARC1500
16.8
ARC2000
22.4
ARC2500
27.9
ARC3000
33.5
ARC3500
39.1
ARC4000
44.7
ARC4500
50.3
ARC5000
55.8
ARC5500
61.4
ARC6000
67
Consult local authorities regarding disposal of
flue gas condensate into public waste water
system. Some jurisdictions require that
condensate be buffered before discharge. This
buffering is commonly achieved by draining
the condensate through a limestone bed.
Consult Thermal Solutions or a chemical
treatment company for buffering system.
CAUTION
Failure to properly pipe the condensate
system will greatly reduce boiler life. Do
not install plugs, caps, or valves on
condensate piping.
Do not manifold boiler condensate and
vent drains together.
Do not crimp condensate lines or reduce
drain line inner diameter size.
3.2.6.1
ARC1000 Condensate Drain Trap
