TEMPERATURE AND HUMIDITY SPECIFICATIONS
IN-USE CONDITIONS
NOTE
In case of using air conditioning systems that have a risk of water leakage it is recommended not to install it above electric equipment or to
take measures to protect the equipment from dropping water.
NOTE
1)
2)
3)
AIR RENEWAL
According to local standards.
MAGNET ROOM
CONTROL ROOM
EQUIPMENT ROOM
Temperature
Temperature gradient
[1]
Relative humidity
30% to 60%
30% to 75%
30% to 75%
Humidity gradient [2]
5%/h
5%/h
5%/h
System heat dissipation
Stand by
Max
Average
Stand by
Max
Average
Stand by
Max
Average
0.56kW
2.40kW
1.20kW(2)
1.45kW
1.15kW
9.10kW
3.50kW(2)
1915 btu
8189 btu
4095 btu
4947 btu
3316 btu
30456 btu
11337 btu
HEAT DISSIPATION DETAILS
DESCRIPTION
ROOM
IDLE
AVERAGE
MAX
W
BTU
W
BTU
W
BTU
Magnet (MAG) and Patient Table (PT)
Magnet
561
1915
1200
4095
2400
8189
Main Disconnect Panel (MDP)
Equipment
132
450
132
450
264
901
Integrated System Cabinet (ISC)
Equipment
280
955
2130
7270
7100
2432
Integrated Cooling Cabinet (ICC)
Equipment
0
0
500
1706
1000
3412
Cryocooler Compressor (CRY)
Equipment
500
1706
500
1706
500
1706
Magnet Monitor (MON)
Equipment
240
819
240
819
240
819
Operator Workspace equipment (OW)
Control
1450
4947
1450
4947
1450
4947
OPTIONS
MR Elastography (MRE)
Equipment
141
480
141
480
141
480
MAGNET ROOM EXHAUST FAN SCHEMATIC
Vent to outside
environment
Exhaust Fan
To Facility
Air Handler
AC Power (rated as required
for operation of Motorized
Damper and Exhaust Fan)
Ground secondary of low
voltage transformer to RF
Room Common Ground Stud
RF Shield
Dielectric Isolator
Room ceiling
Motorized Damper
Exhaust Intake Vent
MAGNET ROOM
CONTROL ROOM
RF Filter
ON/OFF
Manual
fan switches in
parallel
Ductwork
Ductwork
MAGNET ROOM VENTING REQUIREMENTS
HVAC VENT REQUIREMENTS
HVAC vendor must comply with Magnet room temperature and humidity specifications and RF shielding specifications.
RF Shield vendor must install open pipe or honeycomb HVAC waveguides.
All serviceable parts in the Magnet room (e.g.: diffusers) must be non-magnetic.
Waveguides must be nonmagnetic and electrically isolated.
Incoming air must contain at least 5% air from outside the Magnet room (inside or outside the facility) to displace
residual helium.
EMERGENCY VENT REQUIREMENT
Exhaust vent system is supplied by the customer.
All items within the RF enclosure must be non-magnetic.
The exhaust vent system must be tested and operational before the magnet is installed.
The exhaust intake vent must be located near the magnet cryogenic vent at the highest point on the finished or drop
ceiling.
The Magnet room exhaust fan and exhaust intake vent must have a capacity of at least
with a minimum of
12 room air exchanges per hour.
The exhaust fan must be placed above RF shielding located outside 10 gauss (1mT) and with appropriate waveguide.
The system must have a manual exhaust fan switch near the Operator Workspace and in the Magnet room near the
door (the switches must be connected in parallel).
All system components must be accessible for customer inspection, cleaning and maintenance
PRESSURE VENT REQUIREMENT
A pressure equalizing vent is required in the magnet room ceiling or in the wall, at the highest point possible.
The vent minimum size must be (610 mm x 610 mm [24 in x 24 in]) or equivalent.
The pressure equalization vent must be located so any Helium gas is not vented into occupied areas.
Note: Location may affect acoustic noise transmission into occupied spaces.
Date
Rev
/24
EN-MRI-TYP-SIGNA_PIONEER-WEB.DWG
A
23/Jul/2018
SIGNA PIONEER
Typical
M2 - HVAC-Venting
15
