Camus Hydronics DynaMax DMH081 - PART 12 INSTALLATIONS (Continued); Boiler Operation Sequence; Domestic Hot Water with Storage Tank; Domestic Hot Water with Plate Heat Exchanger

61
Table 32: Temperature Rise across Heat Exchanger
(Hydronic Heating)
TEMPERATURE RISE ACROSS HEAT
EXCHANGER
MODEL
[BTU/hr]
30
o
F
(16.7
o
C)
35
o
F (19.4
o
F)
USGPM
∆P
-
Ft.
USGPM
∆P
-
Ft.
80,000
5.0 8.2 4.3 6.2
100,000
6.3 12.3 5.4 9.4
150,000
9.5 10.4 8.1 7.8
199
,000
12.6
7.2
10.8
5.8
250,000
15.8 11.5 13.5 8.7
299,000
18.9 9.3 16.2 7.0
399
,000
25.2
8.4
21.6
6.3
500
,000
31.5
9.2
27
.0
6.9
600,000
38.8 17.5 32.0 11.8
700,000
45.3 18.2 40.0 14.4
800,000
51.8 23.5 43.0 16.0
Table 33: Temperature Rise across Heat Exchanger (DHW)
TEMPERATURE RISE ACROSS HEAT
EXCHANGER
MODEL
[BTU/hr]
20
O
F (11.1
o
C)
USGPM ∆P-Ft.
80,000
7.5
11.5
100,000
9.4
26.9
150,000
14.0 27.8
199,000
19.2 25.9
250,000
23.5 28.3
299,000
28.8 25.8
399,000
38.4 23.9
500,000
48.6
29.4
600,000
57.6 34.2
700,000
70.4 40.0
800,000
77.6 43.2
CAUTION
Temperature rise cannot be adjusted when the burner is
firing at less than 100% of input rate.
CAUTION
Adequate care
MUST
be taken to prevent potential scald
injury when storing water at 140°F (60°C) and hotte r.
WARNING
Should overheating occur or the gas supply fail to shut off,
do not turn off or disconnect the electrical supply to the
pump, instead, shut off the gas supply at a location external
to the appliance
12.11 SETTING THE CORRECT COMBUSTION
Refer to Section 10.1 Setting the Correct Combustion.
12.12 CASCADE SETUP
The following components are needed for a Cascade setup
1) DynaMax Ignition Control Board (848-MN)
2) DynaMax Text Display (848-RC)
3) LabVision Software (recommended)
4) 10kΩ System Sensor
Turn off all the boilers before beginning the setup process.
To setup the DynaMax Cascade system follow the
instructions:
System Sensor
Insert the supplied 10kΩ system sensor into the return
header to the boilers. The wires coming out of the system
sensor should be connected to pin#5 and #6 of the green
DynaMax terminal board.
DynaMax Ignition Control Board (848-MN)
The S4 connector as shown in the figure below is to be
pushed towards connector J5 on the Master and Slave
boiler(s). This step is done by Camus unless the
configuration was altered in the field.
Figure 61: DynaMax Ignition Control Board
DynaMax Text Display (848-RC)
The display has 3 Molex Minifit Jr connections at the
backside. The single one is to be connected to the DynaMax
Ignition Control Board (848-MN). The two other Molex Minifit
Jr connectors which are located closer to the switch are
used for the Cascade setup.
Switch Setup
There is a switch located on the backside of the text display.
Only the Master Text Display is required to provide power to
the Slave boilers, therefore the switch on the backside of the
Master display should be in the ON position, and the switch
at the Slave displays should be in the OFF position. Figure
59 refers to how the switch is to be placed.