space latent load. Arrange ventilation air outlets to avoid drafty
conditions.
2.6.3.2 CHILLED WATER TEMPERATURE: The temperature of the chilled water
entering the radiant ceiling panels shall be at least one degree higher than
the space dew point temperature to prevent condensation on the radiant
panels. Care should also be taken to eliminate any building leakage. Operable
windows without caulking and weather-stripping, and other sources of high
humidity shall not be permitted in such spaces.
2.6.4 TYPICAL DESIGN PARAMETERS -- PATIENT BEDROOMS
(a) SUMMER (COOLING MODE):
(1) Indoor Room Conditions:
24 degrees C (76 degrees F) Db, 55 percent RH
(2) Room Dew Point:
15 degrees C (59 degrees F)
(3) Chilled Water Temperature
To Radiant Panels:
16 degrees C (60 degrees F)
(4) Water Temperature Rise:
5 degrees
(5) Mean Water Temperature:
16.5 degrees C (62.5 degrees F)
(b) Winter (Heating Mode):
(1) Indoor Room Conditions:
25 degrees C (78 degrees F) Db, 30 percent RH
(2) Hot Water Temperature
to Radiant Panels:
80 degrees C (180 degrees F)
(c) Minimum Water Flow
through each Radiant Panel:
1.9 L/min (0.5 GPM)
(d) Pipe Size:
3/4-inch
2.7
HEATING SYSTEMS
2.7.1 GENERAL
This section includes requirements for all heating systems using the
following mediums:
(a) Hydronic Heat (Hot Water or Hot Glycol Water solution)
(b) Steam
(c) Electricity
(d) Natural Gas or Liquid Propane Gas (LPG)
2.7.2 PERIMETER HEATING
Provide perimeter heating system(s) for the patient bedrooms and other
occupied areas, when
(a) The outdoor winter design temperature is 12 degrees C (9 degrees F) and
less.
HVAC DESIGN MANUAL
2-12
HVAC SYSTEMS AND EQUIPMENT
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