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12. INTEJAN CIRCULATOR
12.1 WATER CIRCULATION SYSTEM
Detailed recommendations for the water circulation system are given
in BS 6798, BS 5449 (for small bore and microbore central heating
systems), and BS 5446. The maximum water side operating pressure
(PMS) is 1bar.
12.1.1 To ensure good circulation in gravity circuits, flow pipes
should be designed to run vertically from the water heater
before running laterally. Any lateral run should be less than
2 x the previous vertical run. Pipework should be installed
with a rise towards the vent point. In systems with poor
circulation, a pump kit is also available.
12.1.2 Drain cocks must be located in accessible positions that
permit the draining of the whole system, including the
appliance and hot water storage vessel. A drain cock
should be fitted at the lowest point of the water heating
circuit and, in the case of an indirect system, another must
be fitted at the lowest point of the cold feed. Drain cocks
should be at least ½” nominal size and be in accordance
with BS 2879.
12.1.3 Economy valves can only be used in a DIRECT installation.
NOTE:
The circulator thermostat is factory set to provide a
temperature range of 50˚C to 82˚C. The temperature is
increased by rotating the thermostat knob clockwise and
temperature stop 2 MUST be left in position (see figure 9)
if the circulator is used in a direct application, ensuring a
maximum temperature of 60˚C. For indirect applications,
remove temperature stop 2.
In order to ensure that soundness of the heater is
maintained, you MUST ensure that flow and return pipes
into the sealed compartment are sealed with the supplied
grommets!
12.2 WATER CONNECTIONS
NOTE: Both flow and return connections are Rp¾ (¾ in BSP
female) connections.
IMPORTANT: Use compression fittings at the appliance flow
and return connections and at the air heater casing exit, to
facilitate easy access to the circulator body.
12.2.1 Remove the fixing screws holding the sealing panel in place.
12.2.2 Carefully remove the sealing panel, such that access can be
gained to the circulator compartment.
12.2.3 Side Exit
Knockouts/holes are provided in both sides of the heater
cabinet for external pipe routing. Horizontal pipe
runs are to be kept to an absolute minimum.
12.2.4 Top Exit
a)
Remove the plastic plugs from the air heater top
panel and the fan chamber floor.
b)
Pass the flow and return pipes (flow pipe to the
rear) from below and then locate the pipes with
the circulator body connections. Fully tighten the
connections to the main body before completing
the connections to the top ends of the Flow and
Return pipes, ensuring that the pipework does not
restrict access to the circulator thermostat phial
pocket or the air heater heat exchanger access
panel.
NOTE:
In order to maintain an air tight seal, the supplied
grommets MUST be used where the flow and return pipes
pass through the upper sealing plate and diaphragm.
IMPORTANT: Ensure that the fittings on the circulator body are
well supported when making flow and return connections.
12.2.5 Using good quality duct tape, seal around the Flow and
Return pipes where they pass through the air heater
top panel and fan chamber floor.
FIGURE 9
POSITION OF TEMPERATURE STOPS
FIGURE 8
TYPICAL INTEJAN DIRECT SYSTEM APPLICATION
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Страница 19: ...19 Telephone 01604 762881 FIGURE 12 CONTROL FLOWCHART 17 DIAGNOSIS FLOWCHARTS...
Страница 20: ...www johnsonandstarley co uk 20 FIGURE 13 AIR HEATER DIAGNOSIS FLOWCHART...
Страница 21: ...21 Telephone 01604 762881 FIGURE 14 CONTROL FLOWCHART...
Страница 22: ...www johnsonandstarley co uk 22 18 LOGIC DIAGRAM FIGURE 15 LOGIC DIAGRAM...
Страница 23: ...23 Telephone 01604 762881 3 19 SCHEMATIC DIAGRAM FIGURE 16 SCHEMATIC DIAGRAM...
Страница 25: ...25 Telephone 01604 762881 21 DIMENSIONS FIGURE 18 DIMENSIONS...
Страница 27: ...27 Telephone 01604 762881 FIGURE 19 EXPLODED DIAGRAM 23 EXPLODED DIAGRAM...
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