Slant/Fin TRDV Series User Manual
Page 5
INTREPID TRDV
5
II. AIR CONTROL SYSTEMS
A. DIAPHRAGM-TYPE COMPRESSION TANKS are used to control
system pressure in an AIR ELIMINATING SYSTEM: an automatic
air vent is used to REMOVE air from the system water. See figure 4.
If system pressure needs further control, add an additional tank or
install a larger capacity tank. The automatic air vent should be
installed in the top of the boiler, as in figure 4.
B. CONVENTIONAL COMPRESSION TANKS (non-diaphragm type)
are used to control system pressure in an AIR COLLECTING
SYSTEM. Within the system, after initial start-up and venting, air
is collected in the tank and acts in contact with the water to
control pressure. Air is not vented from this system.
If system pressure needs further control, add another tank in
parallel with the original tank or install a large capacity tank.
Locate the tank at the inlet end of the pump near the boiler.
(See figure 5)
C. HOT WATER RADIATION VENTING - Manual air vents should be
installed at the top of all "drops" (where piping goes downward). Air
must be vented or purged from all zone lines to permit proper system
heating.
D. PUMP LOCATION - Locating low-head pump(s) on return to boiler is
acceptable for smaller boiler sizes in residences of one or two stories.
(See figure 4) The pump location shown in figure 5 is required in large,
multi-story building installations, especially when high-head pumps
are used.
E. A conventional compression tank may be connected to the 3/4"
tapping as shown in figure 5.
IMPORTANT:
Hot water heating systems containing high water volume, such
as would occur with cast iron radiation, require special care with air elimina-
tion. The circulator pump should be located on the boiler supply pipe and the
expansion tank and air scoop should be located near the pump suction.
(See Figure 4, Alternate Pump Location.)
PIPING TANKLESS HEATER
(if used)
I. Heater capacities are listed on page 2.
II. Pipe the built-in tankless heater using the inlet and outlet tappings
indicated on the heater (figure 6).
A. Tempering valve (illustrated, but not furnished) is suggested to provide
more volume of temperate water to kitchen and bath.
B. High temperature water, for dishwasher and laundry, may be piped direct.
C. A flow control valve should be used to control the rate of flow of water
through the coil, otherwise the heating capacity of the coil will be
exceeded. To insure sufficient hot water, the flow rate through the coil
should be limited to a maximum shown for intermittent draw in the ratings
table on page 2.
IMPORTANT:
Escape pipes or drain pipes from relief valves, blow-down
valves, and low-water cut-offs must be piped off to a safe place.
INSTALLING THE BURNER
See Burner Data, pages 8-11, and Burner Manual supplied with burner. If
burner is not mounted as received, mount to boiler, placing flange over
mounting studs. Use gasket between flange and boiler. Distance between
flange and nose of burner must be as shown on pages 8-11. Check to see
that nozzle and settings are as given in burner data tables, pages 8-11.
CAUTION:
DO NOT USE GASOLINE, CRANKCASE DRAININGS, OR ANY
OIL CONTAINING GASOLINE.
3
⁄
8
–
–
–
0.430
0.0075
1
⁄
2
40
0.622
0.0157
0.545
0.0121
5
⁄
8
–
–
–
0.666
0.0181
3
⁄
4
40
0.824
0.0277
0.785
0.0251
1
40
1.049
0.0449
1.025
0.0429
1
1
⁄
4
40
1.380
0.0779
1.265
0.0653
1
1
⁄
2
40
1.610
0.106
1.505
0.0924
2
40
2.067
0.174
1.985
0.161
2
1
⁄
2
40
2.469
0.249
2.465
0.248
3
40
3.068
0.384
2.945
0.354
Nominal
pipe Dia.
Pipe
Schedule
Pipe ID
Inch
Gal. per
Lin.Ft.
Pipe ID
Inch
Gal. per
Lin. Ft.
Standard Steel Pipe
Copper Pipe
VOLUME OF WATER IN STANDARD PIPE OR TUBE
Figure 5. Air Collecting System
Figure 6. Recommended Piping to Tankless Heater