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Arctic Installation and Operation Manual
3.5.4.2 Water Flow Rates (Primary /
Secondary Systems)
Each boiler connected to a secondary loop of
a primary / secondary pumping system shall
have a constant volume pump sized in
accordance with Table 8 or Table 9.
20 F Δ T Flow Rate
Model
Δ P
gpm
ARC1000
95
12.7
ARC1500
143
ARC2000
190
16.3
ARC2500
238
ARC3000
285
28.7
Table 8 Water Flow Rates for Primary /
Secondary Pumping 20F
40 F Δ T Flow Rate
Model
gpm
ARC1000
48
ARC1500
71
ARC2000
95
ARC2500
119
ARC3000
143
Table 9 Water Flow Rates for Primary /
Secondary Pumping 40F
3.5.4.3 Water Flow Rates (Constant
Volume Primary Pumping Systems)
A constant volume primary pumping system
shall be sized so that the flow rate specified in
Table 10 can be maintained through each
boiler connected to the system.
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23
High
Low
Fire
Fire
(ft)
Δ T
Δ T
20F
4F
9.2
20F
4F
20F
4F
20
20F
4F
20F
4F
Δ
T
High
Low
Δ P
Fire
Fire
(ft)
Δ T
Δ T
3.18
40F
8F
2.3
40F
8F
4.08
40F
8F
5
40F
8F
7.18
40F
8F
T
Δ
Maximum Flow Rate
Model
gpm
ARC1000
95
ARC1500
143
ARC2000
190
ARC2500
238
ARC3000
285
Table 10: Water Flow Rates for Constant
Volume Primary Pumping
3.5.4.4 Water Flow Rates for Glycol
For glycol systems the gpm in Table 6, Table
7, Table 8, Table 9, and Table 10 will increase
as specified in Table 11.
Glycol
Concentration
50%
30%
Table 11 GPM Increase for Glycol Systems
3.6
Before Placing Boiler In Operation
3.6.1 Pre-Boil Out Flushing Of System
Much of the dirt and contamination in a new
hot water system can be flushed out before
the boil out of the system. First, flush the
system of waste with clear water. The boiler
and circulating pumps must be isolated
through the successive zones of the system to
waste, carrying metal shavings, dirt, pipe joint
compound, etc. with it. Follow with a
chemical flush.
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sales@thermalsolutions.com
Form: 2435
Revision: 8
Date: 9-19-2016
Δ P
High Fire
Δ T
(ft)
12.7
20F
9.2
20F
16.3
20F
20
20F
28.7
20F
GPM Percent Increase
24%
14%
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