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  • Users: doopedeng
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  1. doopedeng

    Infiltration air for small commercial space acceptable?

    Hi All, I'm in Eastern Canada and wonder what you all think of using exhaust fans to provide the ASHRAE 62.1 required fresh air for small commercial tenant fit-up spaces? Some here think providing fresh air through window/door leaks is fine, as long as the heat source for the space can...
  2. doopedeng

    HVAC requirements for Automatic Carwash

    Hi all, I have a client who is building a car dealership (in Atlantic Canada) with an attached automatic carwash bay to wash every car that goes through its service department. The vehicle is driven into the service drive-through for write-up, then either to service bays or to the carwash (not...
  3. doopedeng

    Dry Pipe System Inspector Test Valve Location

    HI All, I have a single story building with a combustible attic that will be protected with a dry pipe system. The system is currently being installed. The inspector test valve will be located in an occupied office space, where it will drop from the attic above a T-bar ceiling and discharge...
  4. doopedeng

    Working in the Caribbean - Cooling Equipment and Loads

    Hi All, I'm designing systems for a hotel/resort project in the Caribbean and would like a bit of help finding available equipment with 220V/50Hz. Does anyone have a contact(s) for manufacturer's rep down there (preferably global manufacturer like Mitsubishi, LG, Daikin, Carrier)? Also, if...
  5. doopedeng

    How to handle HVAC in a "massage room" at health spa

    Firstly, yes I do mean a real massage (ahem) in a real health spa. [tongue]. We have a health spa project where we have multiple massage rooms, hotel rooms, pool, therapeutic pools, aerobics, exercise, etc. The massage rooms pose a bit of a grey area for me as I haven't personally ever been...
  6. doopedeng

    Packaged Booster Pump Selection and Design

    Hi All, I'm trying to verify my opinion of domestic water pressure in a 93 ft high office building serving mainly just washrooms over the 8 floors of the building. The city water pressure at the suction side of the pressure booster varies between 50-60 psi. The required pressure at the 8th...
  7. doopedeng

    Insulating PVC or CPVC domestic water lines?

    Hi All, I have a hotel project in Eastern Canada where the contractor is proposing to use Xirtec 140 Sched 80 PVC piping for the cold, and Corzan CPVC for hot and hot water recirculation lines that would be UN-INSULATED throughout the building. This building is not classified as a high building...
  8. doopedeng

    NFPA 96 - Grease duct access size

    Hi All, I have a vertical grease duct serving commercial kitchen equipment that is 18x30 running up through 5 stories to the roof and wondered if that is too small to permit "personnel entry" for cleaning as per Section 7.4.2.1, Vertical Ducts in NFPA 96-2004, or elsewhere? I.e., will I need to...
  9. doopedeng

    Condo fan coils for heating (4 pipe) vs. Baseboards

    I have a condo project here in Eastern Canada with central hot and chilled water systems serving 100 condos. I'm using fan coils for the cooling of each condo and would like to use the fan coils for the heating as well, but have reservations about the comfort of air heating in residences in...
  10. doopedeng

    Domestic Water Elevation Pressure Drop

    Hi All, I'm a junior mech'l designer and have not had the opportunity to work on a bldg of more than 3 stories, until now. I have a 9 storey condo building to design and have the following question: When determining the requirement for a domestic water booster pump, do I simply look at 1psi...

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