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Galletti МСС-С 07 [17/24] Water circuit
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17
RG66002701 - Rev 01
The technical and dimensional data reported in this manual may be modified
MCC
12 WATER CIRCUIT
When setting up the water circuit of the unit, it is advisable to follow the directions
below and in any case comply with local or national regulations.
Connect the pipes to the chiller using flexible couplings to prevent the
transmission of vibrations and to compensate thermal expansions.
It is recommended to install the following components on the pipes:
- Temperature and pressure indicators for routine maintenance and monitoring
of the unit. Checking the pressure on the water side will enable you to verify
whether the expansion tank is working efficiently and to promptly detect any
water leaks within the equipment.
- Traps on incoming and outgoing pipes for temperature measurements,
which can provide a direct reading of the operating temperatures.
- Regulating valves (gate valves) for isolating the unit from the water circuit.
- Metal mesh filter (incoming pipes), with a mesh not to exceed 1 mm, to
protect the exchanger from scale or impurities present in the pipes.
- Air vent valves, to be placed at the highest points of the water circuit for the
purpose of bleeding air. (The internal pipes of the unit are fitted with small
air vent valves for bleeding the unit itself: this operation may only be carried
out when the unit is disconnected from the power supply).
- Drainage valve and, where necessary, a drainage tank for emptying out the
equipment for maintenance purposes or when the unit is taken out of service
at the end of the season. (A 1" drainage valve is provided on the optional
inertial storage reservoir: this operation may only be carried out when the unit
is disconnected from the power supply).
GA Vibration-damping coupling (not supplied)
ΔΔ
ΔΔ
ΔP Differential pressure switch
EV Evaporator (R407C/water exchanger)
MA Water pressure gauge
P Water pump
RR Automatic filling device
RS Drain manifold
VAS Automatic air vent valve
SIA Inertial water storage reservoir
VE Expansion tank
VS Safety valve
MCC - CB
from the system
to the system
RR
VS
EV
DP
MA
VAS
IN
OUT
RS
RR
VS
EV
DP
P
RS
MA
VAS
IN
OUT
SIA
VE
from the system
to the system
It is of fundamental importance that the incoming water supply is hooked up
to the connection marked "Water Inlet"
Otherwise the evaporator would be exposed to the risk of freezing since the
antifreeze thermostat would not be able to perform its function; moreover the
reverse cycle would not be respected in the cooling mode, resulting in additional
risks of malfunctioning.
The dimensions and position of plumbing connections are shown in the
dimension tables at the back of the manual.
The water circuit must be set up in such a way as to guarantee that the nominal
flow rate of the water supplied to the evaporator remains constant (+/- 15%)
in all operating conditions.
A standard feature of MCC units is a device for controlling the flow rate (flow
switch or differential pressure switch) in the water circuit in the immediate
vicinity of the evaporator.
RR
VS
EV
DP
P
MA
VAS
IN
OUT
RS
VE
MCC - CP
MCC - CS
from the system
to the system
Содержание
- Declaration of conformity 2
- The range 2
- Constructive features 3
- Components lay out 4
- Constructive features 4
- Components lay out 5
- Mcc 09 15 5
- Mcc 18 22 5
- Mcc 25 37 5
- 0 1 2 3 to be requested at the moment of the order power factor correction capacitors soft starter 6
- Compressor options not present power factor correction capacitors soft starter 6
- Heat pump mcc hb basic unit only evaporator mcc hp unit with pump and expansion vessel mcc hs unit with buffer tank pump and expansion vessel 6
- Models and configurations 6
- The choice of some options can prevent the choice of some options or oblige the selection of other fields to contact the galletti for verification 6
- The range is madde of 10 models cooling only cwith cooling capacities from 6 to 37 kw and 10 models heat pump operation with heating capacity from 6 to 41 kw to simplify the way of making the order galletti offers 3 different solutions of hydraulic kit built in the unit for only cooling only and heating pumps units 6
- Water chiller mcc cb basic unit only evaporator mcc cp unit with pump and expansion vessel mcc cs unit with buffer tank pump and expansion vessel 6
- Cooling only units rated technical data 7
- Heat pump units rated technical data 7
- Rated technical data 7
- Inlet air dry bulbe temperature tw in out inlet outlet air temperature pf cooling capacity pa total electric absorbed power models with hydraulic kit mcc cp mcc cs 8
- Mcc c cooling operation 8
- Performances 8
- Inlet air dry bulbe temperature tw in out inlet outlet air temperature pf cooling capacity pa total electric absorbed power models with hydraulic kit mcc cp mcc cs 9
- Mcc c cooling operation 9
- Performances 9
- Inlet air dry bulbe temperature tw in out inlet outlet air temperature pf cooling capacity pa total electric absorbed power models with hydraulic kit mcc hp mcc hs 10
- Mcc h cooling operation 10
- Performances 10
- Inlet air dry bulbe temperature tw in out inlet outlet air temperature pf cooling capacity pa total electric absorbed power models with hydraulic kit mcc hp mcc hs 11
- Mcc h cooling operation 11
- Performances 11
- In the heat pump operation heating mode the actual heating capacities of units may be lower than the values shown in the table due to defrosting cycles 12
- Inlet air dry bulbe temperature tw in out inlet outlet air temperature pt heating capacity pa total electric absorbed power models with hydraulic kit mcc hp mcc hs rh relative umidity 12
- Mcc h heating operation 12
- Performances 12
- In the heat pump operation heating mode the actual heating capacities of units may be lower than the values shown in the table due to defrosting cycles 13
- Inlet air dry bulbe temperature tw in out inlet outlet air temperature pt heating capacity pa total electric absorbed power models with hydraulic kit mcc hp mcc hs rh relative umidity 13
- Mcc h heating operation 13
- Performances 13
- Calculation factors 14
- Cooling mode 14
- Glycol and water solution 14
- Heat recovery options 14
- Heating mode 14
- Operating limits 14
- Water temperature drop rise different than 5 c 14
- Pressure drop on water side 15
- The following diagrams show evaporator pressure drops δ pw according to water flow rate qw with average water temperature of 10 c 15
- The following diagrams show availiable unit pressure head pu according to water flow rate qw with average water temperature of 10 c 16
- Unit available pressure head 16
- Water circuit 17
- Diagram showing electrical connections between mca and pcds pcd remote control panel 18
- Electrical data 18
- Base dampers 19
- Overall dimensions mcc 06 07 19
- Base dampers 20
- Overall dimensions mcc 09 15 20
- Base dampers 21
- Overall dimensions mcc 18 22 21
- Base dampers 22
- Overall dimensions mcc 25 37 22
- Installation clearance requirements 23
- To guarantee the proper functioning of the unit and access for maintenance purposes it is necessary to comply with the minimum installation clearance requirements shown in figures 1 and 2 verify that there are no obstacoles in front of the fans air outlet avoid any and all situations of backflow of hot air between air outlet and inlet of the unit if even only one of the above conditions is not fulfilled please contact the manufacturer to check for feasibility 23
- Siting 24
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