Michael Raymond To: Brenda Edwards-Jones/EE/DOE@DOE

cc:

04/12/2006 11:08AM Subject: Fwd: Fw: SDHV test procedure

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Also add this letter (attached) from Unico.

Michael G. Raymond

Project Manager

Building Technologies Program

Energy Efficiency and Renewable Energy

Department of Energy, EE-2J

1000 Independence Ave., SW

Washington, DC 20585-0121

phone - (202) 586-9611

fax -(202) 586-4617

Forwarded by Michael Raymond/EE/DOE on 04/12/2006 11:07AM

,..-

"Brian Dougherty" To: michael.raymond©ee.doe.gov

<brian.dougherty@nist.g cc:

ov> Subject: Fwd: Fw: SDHV test procedure

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The attachment is the main technical reference on the additional changes proposed for SDHV in the NOPR.

Brian

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Subject: Fw: SDHV test procedure

To: brian.doughertynist.gov

X-Mailer: Lotus Notes Release 6.0 September 26, 2002

From: Michael McCabe <MMcCabeNavigantconsulting.com>

Date: Thu, 30 Oct 2003 10:24:50 -0500

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Forwarded by Michael McCahe/NCI on 10/30/2003 10:23 AM

"Craig Messmer" <craigunicosystem..com>

10/28/2003 04:55 PM

To: 'Michael McCabe" <MMcCabeNavigantconsuIting.com>

cc:

Subject:SDHV test procedure

 EE-RM/TP-02-002 COMMENT 08
Mike,

We recently had our units tested at ETL as part of the ARI program. The lab did not use the correct airflow because they

misunderstood how to test our units. They tested it at lower airflow than we rate it at. This was because they installed our

restrictor plate and could not meet the minimum static pressure at our airflow. Therefore, they reduced the airflow till the

requirement was met. What they should have done is raise our restrictor plate, or not install it at all. Therefore, I

developed the attached test procedure addendum. I have not given it to them yet. I wanted to get your comments first so

that it is aligned properly with what the DOE will publish later.

Please note that this is the test procedure, not the minimum efficiency.

Thanks,

Craig Messmer(See attached file: Proposed addendum to ARI 210-240 to include SDHVsystems.pdf)

Pri 1fiDHVt,nLrdf

 EE-RM/TP-02-002 COMMENT 08
Craig Messmer

Unico, Inc.

Addendum to ART Standard 210/240 October 27, 2003

SDHV - Small-Duct High-Velocity Test Procedure

SDHV Definition -- a heating and cooling product that contains a blower and indoor coil combination that: (1) Is designedfoi

and produces, at the minimum external static pressure shown in Table 1 when operated at the cert?/ied air volume rate of 220-350

CFMper rated ton of cooling; and (2) when applied in the field, uses high velocity room outlets generally greater than 1 000 fpm

which have less than 6.0 square inches offree area.

Table 1. Minimum External Pressure

Standard Capacity Ratings Minimum External Resistance

(Thousands of Btuh) [kWl (Inches of Water W.C.'> [Pal

29 thru 42 [8.5 thru 12.4] 1.15 [286.1]

43 thru 70 [12.6 thru 20.5] 1.20 [298.6]

71 thru 105 [20.8 thru 30.8] 1.25 [311.0]

106 thru 134 [31.1 thru 39.3] 1.30 [323.4]

5D,D.

____Tesit

TH.

AP P

Table 2. Default Supply Duct Size

Diameter Airflow Range

(inches) [mm] (CFM) [Lis]

6 [152.4] 300-500 [141-236]

7 [177.8] 400-700 [1 89-330]

8 [203.2] 500-900 [236-425]

9 [228.6] 700-1100 [330-519]

10 [254.0] 800-1400 [378-660]

11 [279.4] 1000-1700 [472-802]

Flow Chamber

Damper to adjust air

pressure in flow

chamber to minimize

leakage in system. P,

NOTES

1. Unless specified by manufacturei the discharge duct size shall be based on an air velocity between 1500 and

2600 ft/mm (7.6 and 13.3 mIs) at the rated airflow. Refer to Table 2 for sizing for round duct. Rectangular or

square duct of similar area can be used.

2. The test airflow shall be the rated airflow as specified by the manufacturer unless the static pressure drop across

the unit (AP) is less than minimum allowable value. The test airflow shall be reduced until the minimum allowable

pressure drop is achieved.

3. The damper shall be adjusted to keep the chamber static pressure below 0.5 inches of water (124.4 Pa) to minimize air leakage in the test apparatus.

4. The unit shall be tested at full speed unless specified by manufacturer.

5. All balance dampers or restrictor devices on or inside the unit shall be fully opened.

6. Additional ductwork, including elbows, may be used to connect between the chamber and the exit of the 2D

minimum test duct.

7. If Closed-Loop Enthalpy method is used, the maximum return side static pressure (P1) shall be 0.1 inches of

water (24.9 Pa).

 EE-RM/TP-02-002 COMMENT 08