Raypak 88AR-398A, Инструкция по установке и эксплуатации

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Leaks must be repaired at once to prevent damage to
the heater. NEVER use petroleum-based stop-leak
compounds.
To perform hydrostatic test:
1. Connect fill water supply. With bleed valve open,
fill boiler with water. When water flows from bleed
valve, shut off water. Close bleed valve. Carefully
fill the rest of the system, making sure to eliminate
any entrapped air by using high-point vents. Close
feed valve. Test at standard operating pressure for
at least 24 hours.
2. Make sure constant gauge pressure has been
maintained throughout test.
3. Check for leaks. Repair if found.
Hydronic Heating
Pump Selection
In order to ensure proper performance of your boiler
system, you must install a correctly-sized pump. Ray-
pak recommends designing for a ∆T within the range
of 20°F to 60°F (8°C to 19°C). See Table H for accept-
able flow rates for each model (∆T is the temperature
difference between the inlet and outlet water when the
heater is firing at full rate).
Three-Way Valves
Three-way valves intended to regulate system water
temperatures by reducing flow in the boiler should not
be used.
Boiler
Model
Standard Boiler Pump*
Pump HP
H7-88AR TACO 007 1/25
H7-108AR TACO 007 1/25
H7-198AR TACO 010 1/8
H7-278AR TACO 012 1/8
H7-398A TACO 012 1/8
Table G: Pump Selection
* Pump selection based on 30° ∆T with up to 50 eq. ft. of tubing.
NOTE: The 50 eq. feet of tubing typically represents
25 linear feet of tubing and 25 eq. feet of fittings.
CAUTION: Be careful when installing the drywell
not to over-tighten the well as this can damage the
well and may prevent the sensor from fitting properly.
Fig 12: System Sensor Installation
System
Sensor (S3)
Thermal
Paste
Drywell
NPT
Fitting
System Sensor Installation
The System Sensor (S3) is required for all selectable
modes unless the unit’s firing rate will be controlled by
an external source such as our Temp Tracker MOD+
Hybrid sequencer. Proper placement and method of
installation are critical for proper operation of the sys-
tem. (See Fig. 12) The sensor must be installed in a
drywell in conjunction with heat conductive compound
as shown in the following images. The drywell must be
installed no more than 5 equivalent feet of pipe/tubing
downstream of the de-coupler and installed in such a
way that ensures the sensor bulb is in the flow path.