HomeMy WebLinkAboutTalisa Aria Spa Electrical Letter.pdf Engineering
PO Box 810,0825A CHAMBERS AVE,EAGLE,CO 81631
PHONE: (970)328-2699 FAX: (970)328-0234
Town of Vail Building Department
970-479-2149
Brent Wilson - PE
970.390.7673
brentw@randhmechanical.com
Re: Talisa Aria Spa Makeup Air Unit replacement—1300 Westhaven Drive, Vail
1/30/2018
Dear all with the town of Vail building department,
I write this letter to address the (4) replacement makeup air units at the Talisa and the electrical connections made to
the new units, in the Aria Spa. The new units were rated similar electrically as the old units, all at 460 volt 3phase. The
circuits come from the electrical panel labeled HP2, via (2)two 30 amp 3P circuit breakers feeding 3#10AWG wired per
(2) makeup air units—for a total of 21amp per circuit. It appeared upon completion of the installation,the wire size,
circuit breakers and electrical connections were adequate for the application, and meet the intent of the 2017 NEC. We
have also enclosed a sketch, the old electrical drawings, the old nameplate and the equipment cut sheet for your
reference.
If you have any other questions or concerns, please do not hesitate to give me a call to discuss.
Sincerely,
Brent Wilson—Principal Engineer
825A Chambers Avenue, P.O. Box 810 Talisa Aria Makeup Air Unit Replacement
Eagle, CO 81631
T800-543-9895 P 970-328-2699 F 970-328-0234
www.randhmechanical.com
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MUA FAN INFORMATION - Job#3163224
FAN DESIGN WEIGHT BURNER
UNIT TAG FAN UNIT MODEL # BLOWER HOUSING CFM ESP, RPM H.P, B.H.P. 0 VOLT FLA (LBS,) SONES EFFICIENCY(%)
NO,
1 A3-IBT-600-300-300-G18 018-PB A3-IBT-600-300-300 6900 0,980 850 5,000 3,4130 3. 460 6.8 1774 15.5 80
GAS FIRED MAKE-UP AIR UNIT(S)
FAN INPUT OUTPUT REQUIRED INPUT GAS
UNIT TAG BTUs BTUs TEMP, RISE PRESSURE GAS TYPE
NO.
1 535289 428231 65 deg F 7 In, w.c. - 14 in. w,c. Natural
FAN OPTIONS
FAN
UNIT TAG OPTION (Qty. - Descr.)
NO.
1 - Standard Electrical Connection (main and control panel) for Standing Power
- Single Module, If a Non-DCV Prewire Is used on the IBT Heater, the #28, #47,
'NS', 'MA', or 'E2' Option Prewire must be selected, Do not provide supply
'starter In prewire. •
1 - Motorized Backdraft Damper for A3-I Housing
1 - Special orifices for IF heaters above 2,000'
1 - Inlet Pressure Gauge, 0-35'
1 - Manifold Pressure Gauge, 0 to 10' wc, 2 Furnaces
1 1 - IF 3 Indoor Hanging Option - Includes 2 HSA310 Hanging Spring Isolators
per Uni-Strut
1 - Convenience Outlet (GFCI), 15 amp - Requires Separate 120V Connection. 4
Includes receptacle and J box,
1 - Insulation Option for VBank filter section
1 - 8 Inch Round Connection for Separate Combustion, 1 Module, Duct by Others
1 - Ship Modules Separate
1 - Commercial Smoke Detector/Alarm Interlock (Supplied by Others)
FAN ACCESSORIES
FAN EXHAUST SUPPLY
UNIT TAG
NO. GREASE GRAVITY WALL SIDE GRAVITY MOTORIZED WALL
CUP DAMPER MOUNT DISCHARGE DAMPER DAMPER MOUNT
1 YES YES
1
1
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JOB Aria Spa - Cascade 1
BN199 AIt�T LOCATION CASCADE, CO, 80809
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0 5 l nk®Tt®4c ® _�� DATE 9/29/2017e--1),
JOB # 3163224
1
DWG # 1 DRAWN BY BDP-42 1