9
ACCESSORIES AND OPTIONAL EQUIPMENT
Mechanical accessories
NOTE:
The accessories can be of the following type:
(M):
only installed in the factory.
(F):
supplied for installation by the customer.
MP. Hydronic Kit (M).
Consists of:
1 On-off ball valves.
Turn components such as the water filter, surge chamber and pump on and off when they require routine or
extraordinary maintenance.
2 Metal gauze water filter.
Can be turned on and off and inspected. It is installed on the pump delivery side. Prevents machining
residues (dust, swarf, etc.) in the water pipes from entering the plate-type heat exchanger.
3 Hydraulic pump
. Circulates water around the system. The pumps have a low/high head and suit the majority of installation re
-
quirements. The pumps are safeguarded by a magnetothermics installed in the chiller’s electric panel.
4 Surge chamber.
This is a closed, diaphragm type chamber. It absorbs the variations in the volumes of water in the system cau-
sed by temperature variations.
5 water filling.
Manual function with control positioned on the side of the unit opposite the electric panel and turned on and off by
a cock that can be accessed by removing the rear panel.
6 water pressure gauge
. Connected to the water fill pipe. Displays the pressure of the water in the system.
7 water safety valve.
8 water outlet.
9 Air vent.
10 Antifreeze heater connection (RAG accessory).
To ensure a continuous operation, an anti-freeze with pump function (based on a reading from the output water probe) and starting
cyclic (anti-sticking) after prolonged inactivity are enabled; if the hydronic kit has 2 pumps, the second, mounted in parallel to the
first, can be activated in case of failure of the first and will also include a cycling period to guarantee to each pump an equivalent
operating time.
MP. Hydronic Kit.
MP : Hydronic Kit with 1 (M1P) o 2 (M2P) Pumps:
(The second pump, mounted in parallel to the first, allows to have a spare pump
to be activated in case of failure of the first). Besides the pumps, this accessory is equipped with all the hydraulic components
(water filter, expansion tank, on-off valves, water pressure gauge, air vent, water outlet) required for complete installation and easy
maintenance.
Different water accumulation tank configurations are therefore available in combination with the Hydronic Kit accessory:
MP AM 2P STD: Accumulation on the Plant Delivery side (Standard)
(A)
:
The pump draws water from the system, sends it to the
plate exchanger and from thence to the inertial accumulation tank. During normal operating conditions, the pump in this configura-
tion is able to provide a residue head from 80 to 120 kPa (from 8 to 12 m.w.c.) for the circulating water.
MP AM 2P HP1: Accumulation on the Plant Delivery side (High)
(B)
.:
The pump draws water from the system, sends it to the plate
exchanger and from thence to the inertial accumulation tank. During normal operating conditions, the pump in this configuration is
able to provide a residue head from 160 to 210 kPa (from 16 to 21 m.w.c.) for the circulating water.
MP PS 2P STD: Accumulation pre-engineered for the primary and secondary circuit :
The sole function of the pump is to circu-
late the water around the primary circuit: this circuit includes the accumulation tank and plate exchanger (chiller water circuit). The
installer must mount the pumping section relative to the secondary circuit formed by the accumulation tank (with the pre-engineered
wet connections) and the system served. No high working head version available.
MP SS 2P STD
: Hydronic Kit without Water Storage Tank (Standard)
(A)
.
The pump draws water from the system, sends it to the
plate heat exchanger and returns it to the system. During normal operating conditions, the pump in this configurations can provide
a residue head from 80 to 120 kPa (from 8 to 12 m w.c.).
MP SS 2P HP1
: Hydronic Kit without Water Storage Tank (High Working Head)
(B)
.
The pump draws water from the system, sen-
ds it to the plate heat exchanger and returns it to the system. During normal operating conditions, the pump in this configurations
can provide a residue head from 160 to 210 kPa (from 16 to 21 m w.c.).
Notes:
(A):
For the working head values depending on the water flow rate, consult the Standard Working Head MP AM STD graph.
(B):
For the working head values depending on the water flow rate, consult the High Working Head MP AM HP1 graph.
Содержание RHA series
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