Section 246-335-255. Heating, ventilating and air conditioning.

(1) Hospice care centers must have systems to provide individual temperature control for patient rooms to assure patient preference and comfort. The hospice care center must have the capacity to maintain:

(a) Patient rooms at 70°F in summer and 80°F in winter; and

(b) Nonpatient care areas at 75°F in summer and 70°F in winter.

(2) Total air circulation rates measured in air changes per hour (ACH) and ventilation air quantities must be provided in the following areas, if applicable, as follows:

(a) Patient rooms - 4 ACH circulated, 2 ACH outside air;

(b) Corridors - 2 ACH with 20% minimum outside air;

(c) Toilets, bathing facilities, locker rooms, housekeeping closets, soiled linen handling facilities, soiled utility rooms and laundry rooms - minimum 10 ACH total or a minimum of 70 CFM exhausted directly to the outdoors;

(d) Clean linen handling facilities, clean utility rooms, and medication distribution rooms - 4 ACH total or a minimum of 70 CFM;

(e) Food preparation areas - 10 ACH with 2 ACH outside air; and

(f) All other areas not specifically addressed above must be designed in accordance with Table 2 of ASHRAE Standard 62-1999.

(3) Heating and air conditioning system fans must continuously operate to maintain required pressure differences. Heating and air conditioning system air flows must be balanced to maintain pressure differences as follows:

(a) Provide negative pressure for any of the following areas, if applicable:

(i) Toilet rooms and showers;

(ii) Janitor rooms;

(iii) Soiled utility rooms; and

(iv) Food service areas and other areas where moisture or odors are generated;

(b) Provide positive pressure for any of the following areas, if applicable:

(i) Medication distribution rooms;

(ii) Clean utility rooms; and

(iii) Other similar areas.

(4) System outdoor air inlets must be located at least ten feet from any exhaust fan outlet, plumbing vent, combustion appliance vent, or other sources of contaminated air.

(5) A kitchen grease hood must be installed, and the applicant must provide a section drawing showing listed assembly type(s), fan discharge type and direction, curb venting, all required clearances both above and below the roof, materials, cleanouts, access doors, hood overhang of cooking equipment and other details in accordance with NFPA 96, Uniform Mechanical Code Sections 507 and 508, WAC 388-78A-070 (2)(e)(ii)(E) and 388-78A-290 (1)(a).

(6) Independent cooling system must be in place for elevator machine rooms.

(7) Combination fire smoke dampers must be in place for penetrations of corridor walls and of occupancy separations required around mechanical rooms, laundry rooms and storage rooms used in common.

[Statutory Authority: Chapter 70.127 RCW. WSR 02-18-026, § 246-335-255, filed 8/23/02, effective 10/1/02.]

Chapter 70.127 RCW. WSR 02-18-026, § 246-335-255, filed 8/23/02, effective 10/1/02.

Rules

388-78A-070,388-78A-290,