CleaverBrooks FLX Series User Manual

Chapter 3 General Description
3-2 750-177
Continuous Flow
The system must be piped and the controls arranged so that there will be water circulation through the boiler
under all operating conditions. Constant circulation through the boiler eliminates the possibility of stratification
within the unit.
Refer to Table 3-1 to determine the minimum continuous flow rate through the boiler.
Table: 3-1 Minimum Flow Rates for Hot Water Boilers
MODEL
NO.
DT = 20F DT = 40F DT = 60F DT = 80F DT = 100F
DP
(PSIG)
GPM DP (PSIG) GPM DP (PSIG) GPM DP (PSIG) GPM DP (PSIG) GPM
FLX-150 1.14 122.0 0.30 61.1 0.13 41.1 0.08 30.8 0.05 24.4
FLX-200 1.14 162.3 0.30 81.1 0.13 54.1 0.08 40.6 0.05 32.5
FLX-250 1.77 202.8 0.46 101.4 0.21 67.6 0.12 50.7 0.08 40.6
FLX-300 1.85 243.4 0.48 121.7 0.22 81.1 0.12 60.9 0.08 48.7
FLX-350 2.49 284.0 0.65 142.0 0.29 94.7 0.17 71.0 0.11 56.8
FLX-400 1.35 324.5 0.35 162.3 0.16 108.2 0.09 81.1 0.06 64.9
FLX-450 1.71 365.1 0.44 182.6 0.20 121.7 0.11 91.2 0.08 73.0
FLX-500 2.03 405.7 0.54 202.8 0.25 135.2 0.14 101.4 0.09 81.1
FLX-550 2.50 446.3 0.67 223.1 0.31 148.7 0.17 111.5 0.11 89.2
FLX-600 2.99 486.8 0.77 243.4 0.35 162.3 0.20 121.7 0.13 97.4
FLX-700 1.75 567.9
0.45 284.0 0.21 189.3 0.12 142.0 0.08 113.6
FLX-800 2.27 649.1 0.59 324.5 0.27 216.4 0.15 162.3 0.10 129.8
FLX-900 2.85 730.2 0.74 365.1 0.33 243.4 0.19 182.6 0.12 146.0
FLX-1000 4.08 811.4 1.02 405.6 0.42 270.4 0.25 202.8 0.15 163.6
FLX-1100 4.42 892.6 1.15 446.2 0.48 297.4 0.28 223.0 0.18 178.4
FLX-1200 6.20 973.6 1.60 486.8 0.59 324.6 0.31 243.4 0.22 194.8
!
DANGER
CAUTION
In order to avoid damage to the equipment, a circulating pump should be interlocked with the burner
so that the burner cannot operate unless the circulating pump is running.
It is recommended that the system circulating pumps be kept running, even though the heat users do not
require hot water. The relief device or bypass valve will allow continuous circulation through the boiler and
will help prevent rapid replacement of boiler water with “cold” zone water.
!
DANGER
CAUTION
The operator should determine that a circulation of water exists through the boiler before initial fir-
ing or when firing after the unit has been drained and refilled. A reduced circulation of water or no
water circulation through the boiler when the burner is operating may result in damage to the equip-
ment.
ABC
D
EFG
8

CleaverBrooks FLX Series Specifications

General

Brand	CleaverBrooks
Model	FLX Series
Category	Boiler
Language	English