Current through Register Vol. 47, No. 6, September 18, 2024
(1)
Steam and hot water heating and domestic water heating systems shall comply
with the following:
a. Boilers shall be
installed to comply with the division of labor services rules promulgated under
Iowa Code chapter 89 and 875-Chapters 90 to 96, Iowa Administrative Code.
(Ill)
b. Boiler feed pumps,
condensate return pumps, fuel oil pumps and hot water heating pumps shall be
connected and installed to provide standby service if any pump malfunctions.
(Ill)
c. Supply and return mains
and risers of cooling, heating, and steam systems shall have valves which
isolate various sections of each system. Each piece of equipment shall have a
valve at the supply and return ends. (Ill) (Exception 2)
(2) Insulation shall be provided for the
following within the building: (Exception 3)
a. Steam supply and condensate return pipe;
(III)
b. Pipe above 125° F, if
it is exposed to contact by residents; (II, III)
c. Chilled water, refrigerant, and other
process pipe and equipment operating with fluid temperatures below ambient dew
point; (III)
d. Water supply and
roof drainage pipe on which condensation may occur; (III)
e. Boilers, smoke-breaching and stacks;
(III)
f. Hot water pipe above
180° F, and all hot water boilers, heaters, and pipe; and (III)
g. Other pipes, ducts, and equipment as
necessary to maintain the efficiency of the system. (Ill)
Insulation including finishes and adhesives on the interior
surface of ducts, pipes, and equipment, shall have a flame-spread rating of 25
or less, and a smoke-develop rating of 50 or less. This shall be determined by
an independent testing laboratory in accordance with National Fire Protection
Association (NFPA) Standard 255, 1984 Edition. (Ill) (Exception 3)
Insulation on cold surfaces shall include an exterior vapor
barrier (III)
(3) The heating system shall be capable of
maintaining a temperature of 78° F. (II, III) The cooling system shall be
designed to maintain all living spaces within the comfort zone. The comfort
zone is defined in the ANSI/American Society of Heating, Refrigeration and Air
Conditioning Engineers (ASHRAE) Standard 55-1981 or the 1985 ASHRAE
Fundamentals Handbook. (Ill) (Exception 4)
a.
All air-supply and air-exhaust systems shall be mechanically operated and shall
have ducts from a central system to and from each room. All fans serving
exhaust systems shall be located at the discharge end of the system. The
ventilation rates shown in Table 2 are minimum acceptable rates, and shall not
preclude higher ventilation rates. (Ill) (Exception 2)
b. The bottoms of ventilation openings shall
be not less than 3 inches above the floor of any room. (Ill) (Exception
3)
c. All central systems designed
to heat and cool the building with recirculation of air shall be equipped with
a minimum 2-inch deep, 8- to Il-pleat per foot, class 2 Underwriters'
Laboratories, self-extinguishing, nonwoven, cotton, downstream, or final filter
with a minimum efficiency of 25 to 30 percent and average arrestance of 90
percent, tested in accordance with ASHRAE Standard 52-76. This does not
preclude the additional use of a prefilter upstream of the air-handling
equipment to extend the service life of the downstream, or final filter (III)
(Exception 5)
d. Evaporative
cooling shall not be substituted for direct expansion refrigeration in the
air-conditioning system. (Ill) (Exception 4)
e. Any alternate ventilation system designed
to attain an equivalent degree of odor control and purity of air to resident
areas shall be considered for approval under conditions in rules 481-5
8.2(135C) and
481-59.2 (135C).
(Ill)
f. Mechanical ventilation
over cooking equipment and dishwashing equipment shall be designed to remove
hot air and inhibit cold air above hot food or dishes. (Ill) (Exception
3)
g. Mechanical ventilation shall
be provided in food storerooms to maintain temperature and humidity for the
type of food being stored. (Ill) (Exception 4) Facilities built before November
21, 1990, shall provide mechanical ventilation if freezers, refrigerators or
compressors are located in the storeroom.
h. Outdoor ventilation air intakes shall be
at least 25 feet from the exhaust outlets of any ventilating system, combustion
equipment stacks, or noxious fumes. The bottom of outdoor intakes serving
central air systems shall be located as high as practical, but not less than 6
feet above grade level, or, if installed through the roof, 3 feet above roof
opening. (Ill) (Exception 3)
i. The
ventilation system shall be designed and balanced to provide the general
pressure relationship to adjacent areas shown in the Pressure Relationship and
Ventilation Table 2. Through-the-wall air-conditioning units will not be used
to calculate make-up air. (Ill) (Exception 2)
j. Corridors, attics or crawl spaces shall
not be used as a plenum to supply air to or exhaust air from any rooms. (Ill)
(Exception 3)
k. The air system for
resident rooms, between smoke-stop partitions, shall be operated with common
switches. (Ill) (Exception 3)
l. If
the fire alarm system is activated, the air distribution system shall shut
down. (Ill)
m. Air-handling duct
systems shall meet the requirements of 1987 NFPA Standards 90A and 90B. Supply
and return registers shall not be at the same level and shall be designed to
inhibit stratification. (Ill) (Exception 4)
n. Fire and smoke dampers shall be
constructed, located and installed in accordance with the requirements of 1987
NFPA Standard 90A, 90B and 101.
o.
Range and dishwasher exhaust hoods in food preparation centers shall have a
minimum exhaust rate of 60 cubic feet per minute per square foot of hood face
area. Face area is the open area from the exposed perimeter of the hood to the
average perimeter of the cooking surfaces. (Exception 4)
(1) All hoods over cooking ranges shall be
equipped with grease filters, a fire extinguishing system, and heat-activated
fan controls.
(2) Openings for
cleaning shall be provided every 20 feet in horizontal exhaust duct systems
serving hoods.
(3) Conditioned air
shall be supplied to balance exhausted air.
(4) Special hood designs shall be evaluated.
(Ill) (Exception 4)
p.
Rooms containing fuel-fired heating units or other fuel-fired equipment shall
be provided with sufficient outdoor air to maintain combustion rates of
equipment and reasonable temperatures in the room and in adjoining areas. (Ill)
(Exception 3)
q. Filter beds shall
be located upstream of the air-conditioning equipment unless a prefilter is
employed. A prefilter shall be upstream of the equipment. The main filter bed
may then be located farther downstream.
(1)
Filter frames shall be durable and carefully dimensioned and shall provide an
airtight fit within enclosing duct work.
(2) All joints between filter segments and
the enclosing duct work shall have gaskets or be sealed to provide a positive
seal against air leakage. (Ill) (Exception 2)
r. All perimeter duct work under the slab
shall be encased in lightweight or insulating concrete and sloped to a plenum
low point. (Ill) (Exception 3)
s.
laundry rooms shall be supplied with sufficient conditioned outside air to
balance the amounts exhausted or used for combustion. (Ill) (Exception
3)
t. The amounts of air and
pressure relationship set forth in Table 2 shall be provided. (Ill) (Exception
3)
u. Condensate piping from
cooling coils shall be a minimum of of an inch inside diameter and provided
with openings for cleaning every 10 feet. (Ill) (Exception 4)
v. Attics or crawl spaces shall not be used
to house heating or cooling equipment. (Ill) (Exception 3)
w. Rooms used for heating and cooling
equipment must be accessible through a swinging door (III) (Exception 3)
Table 2
PRESSURE RELATIONSHIPS AND VENTILATION OF CERTAIN AREAS OF
NURSING FACILITIES
|
Area Design |
Pressure Relationship to Adjacent Areas |
Minimum Air Changes of Outdoor Air Per Hour Supplied to
Room |
Minimum Total Air Changes Per Hour Supplied to Room
|
All Air Exhausted Directly to Outdoors |
|
|
Resident Room |
E |
2 |
2 |
Opt. (#1) |
|
|
Resident Area Corridor |
E |
2 |
2 |
Opt. (#3) |
|
|
Physical Therapy |
N |
2 |
6 |
Opt. (#1) |
|
|
Soiled Work Area or Soiled Holding |
N |
2 |
10 |
Yes |
|
|
Toilet Room |
N |
Opt. (#1) |
10 |
Yes |
|
|
Bathroom |
N |
Opt. (#3) |
10 |
Yes |
|
|
Housekeeping Closet |
N |
Opt. (#3) |
10 |
Yes |
|
|
Food Preparation Area |
E |
2 |
10 |
Yes |
|
|
Warewashing Room |
N |
Opt. (#2) |
10 |
Yes |
|
|
Laundry, General |
E |
2 |
10 |
Opt. (#4) |
|
|
Soiled Linen Sorting and Storage Area |
N |
Opt. (#4) |
10 |
Yes |
|
|
Employees' Lounge |
N |
2 |
6 |
Yes |
|
|
Lounge |
N (#5) |
2 |
6 |
Yes (#5) |
|
|
*Designated Smoking Areas |
N |
2 |
6 |
Yes |
|
P = Positive N = Negative E = Equal Opt. = Optional
#1 Room may be exhausted through adjoining toilet
room.
#2 Make-up air may be supplied through kitchen.
#3 Corridor may be exhausted through adjoining service
areas.
#4 Laundry may be exhausted through the soiled area.
#5 Pressure relationships in lounges are subject to Exception
4.
* Exception 4
(4) Every facility shall have a complete
interior plumbing system. (I, II, III)
a. All
plumbing and other pipe systems shall be installed in accordance with the
requirements of the Iowa state plumbing code and applicable provisions of local
ordinances. (II, III)
b. All pipes
below grade or in concrete slabs shall be type K, soft copper There shall be no
joints below the slab.
c. Water
supply systems shall meet the following requirements:
(1) All facilities shall have a potable water
source from a city water system or a private source which complies with the
regulations and is approved by the department of natural resources. (I, II,
III)
(2) Systems shall be designed
to supply water to the fixtures and equipment at a minimum pressure of 15
pounds per square inch during maximum demand periods. (Ill)
(3) Plumbing fixtures in janitors' rooms and
soiled workrooms shall be provided with hot water (III)
(4) Each water service main and branch main
shall have valves. Stop valves shall be provided at each fixture. Bathtubs or
showers shall be equipped with screwdriver stop valves. (Ill) (Exception
2)
(5) Backflow preventers (vacuum
breakers) shall be installed on hose bibbs, janitors' sinks, bedpan flushing
attachments, hair care sinks, and on all other threaded fixtures to which hoses
or tubing can be attached. (I, II, III)
(6) Water softeners shall not supply cold
water to the kitchen, drinking fountains, or ice machines. (Ill) (Exception
4)
(7) Hot water distribution
systems shall provide hot water as specified at each hot water outlet at all
times. (See Table 3) A circulating pump in a hot water system shall meet these
requirements. A circulating pump is not required in facilities licensed for 15
or fewer beds. (Ill)
(8) The hot
water system shall be designed to supply 110° F to 120° F water to all
resident lavatories, tubs and showers. (II, III)
Table 3 HOT WATER USE
|
|
Resident Areas |
Dietary |
Laundry |
|
|
Gallons per hr. per bed** |
3 |
2 |
2 |
|
|
Temperature (°F) |
110 |
120* |
|
|
*Provisions shall be made to provide 180°F rinse water at
dishwasher (May be provided by a separate booster heater)
** Quantities indicated for design demand of hot water are
for general reference minimums and shall not substitute for accepted
engineering design procedures using actual number and types of fixtures to be
installed. Design shall also be affected by temperatures of cold water used for
mixing, length of run, and insulation relative to heat loss or other factors.
As an example, the total quantity of hot water needed will be less when the
temperature available at the outlet is very nearly that of the source tank and
the cold water used for tempering is relatively warm.
(9) Rescinded lAB 10/7/09, effective
11/11/09.
d. Drainage
systems shall meet the following requirements:
(1) Sewage shall be collected and disposed of
in a manner approved by the department. Disposal into a municipal system meets
this requirement. (Ill)
(2) Private
sewage systems shall conform to rules promulgated by the department of natural
resources. (Ill)
(3) Drainage pipes
which pass above food preparation, serving, and food storage areas shall be
enclosed. (Ill)
(4) Plastic pipe
may be used in any drain-waste-vent system in accordance with the state
plumbing code 641-Chapter 25.{Ill)
(5) Openings for pipe cleaning shall be no
more than 50 feet apart in a horizontal drain line. (Ill) (Exception
2)
(6) Floor drains with
appropriate grates shall be provided for all mechanical equipment rooms,
laundries, kitchens, dishwashing areas, soiled utility rooms, basement floors,
any other area where water may collect on the floor, shower stalls and in front
of showers or bath units. (Ill) (Exception 4)
(7) foundation drains shall be provided in
accordance with subrule 61.3(9). (Ill) (Exception 4)
(5) Before completion of the
contract for new construction and final acceptance of the facility, the
contractor shall certify that all mechanical systems have been tested and
balanced, and that the installation and performance of these systems conform to
plans and specifications.
(6) Upon
completion of the contract, the owner shall be furnished with a complete set of
manufacturer's operating, maintenance, and preventive instructions. A parts
list with numbers and descriptions for each piece of equipment shall be
included. The owner shall be instructed in the operational use of systems and
equipment as required. (Ill) (Exception 3)
