Iv. General Maintenance - Slant/Fin INTREPID TRDV-30-0.85 Installation And Operation Instructions Manual

INTREPID TRDV

IV. GENERAL MAINTENANCE

These operations are recommended to be performed at
regular intervals:
A. BOILER HEATING SURFACES: clean off all coatings
found. Reseal flue collector cover.
B. BOILER CONTROLS: check contacts, settings. Adjust as
necessary.
C. PIPING: check piping and accessories for leaks.
D. CHIMNEY or STUB VENT and BREECHING: check for
obstructions and leaks.
E. COMBUSTION AIR TO BURNER: check for continued
POSITIVE supply of air as required. Air needs are
greatest in coldest weather.
Thermostatic bypass valves type TV are designed to allow
boilers to reach their optimum operating temperature
quickly and to prevent cool/cold return temperatures from
affecting them.
Operation/Installation: The thermostat within the "TV" valve
allows full flow through the bypass until the predetermined
temperature is reached.
Start Up: With the balancing valve on the bypass fully
open, operate the boiler until it reaches its normal
operating temperature. If hot water does not automatically
flow to the system then adjust (throttle) the bypass
balancing valve until flow (hot water) to the system is
SIZE
25 mm (1") NPT (female x female)
32 mm (1-1/4") NPT (female x female)
38 mm (1-1/2") NPT (female x female)
Max. operating pressure 6 bar (85 psi) Maximum operating temperature 110°C (230°F)
The flow factor Kv is the number of cubic meters per hour of water at 20°C which will flow through the valve with a pressure drop of 1kg/cm
The flow coefficient Cv is the flow of water at 60°F in US gallons per minute at a pressure drop of 1lb/in
Thermostatic Bypass Valve
TYPICAL MOUNTING
S/F PART NO.
116040
116041
116042
F. WATER SYSTEM: check
1. System to be full of water and pressure to remain
2. Air-control system: noise and air binding in radiation
3. Water lines: slightest leaks should be corrected.
4. Low water cut-off, for operation (see instructions
† A flue brush (57 mm (2-1/4") dia.) is supplied with boiler.
Replacements are available from dealer or hardware stores.
APPENDIX A
established. If flow is already to the system, no adjustment
is required.
When mounted on the return "TV" allows full bypass until the
return temperature reaches 46 degrees Celsius (115 degrees
Fahrenheit). "TV" will begin opening while maintaining a 46
degrees Celsius (115 degrees Fahrenheit) minimum return
temperature. When return temperatures reach approximately
54 degrees Celsius (130 degrees Fahrenheit) most of the flow
will be through the system.
Mounting: "TV" can be installed in any position. An adjustable
balancing valve (or ball valve) must be installed on
the bypass.
TYPICAL RETURN VALVE MOUNTING
TO SYSTEM
FROM SYSTEM
OPEN TEMP . A
46 ºC 115 ºF 107 mm 4.2"
46 ºC 115 ºF 114 mm 4.5"
46 ºC 115 ºF 119 mm 4.7"
stable (between 83 kPa (12 psi) and 172 kPa (25
psi).)
should not occur.
furnished with unit).
BOILER
A/2 Kv
53 mm 2.1" 8.96
57 mm 2.25" 13.99
60 mm 2. 35"
17.23
across the valve.
2
13
WEIGHT
Cv
1.5 kg 3.3 lb
10.5
2.0 kg 4.4 lb
16.4
2.4 kg 5.3 lb
20.2
(1 bar).
2