HVAC Systems Overview

Warehouse renovation with mixed heating/cooling strategy: gas-fired unit heaters for high-bay warehouse zones, ductless split (VRF) systems for office/break room spaces, and roof-mounted exhaust fans with interlocked makeup air.

Ductless Split System Schedule

Mark	Manufacturer	Cassette	Serves	Tons	Refrigerant	MBH Clg	MBH Htg
AC-2,5	LG	LMN180HV / FT-QG1W0	Offices	0.5	R-410A	7	8
AC-1,4	LG	LMN076HV / FT-QG1W0	Offices	1.0	R-410A	12	13.8
AC-3	LG	LCN188HV / FT-QG1W0	Break Room	1.5	R-410A	18	20.8

Condensing Unit

Mark	Manufacturer	Model	Serves	Tons	Refrigerant	Clg MBH	Htg MBH	Weight (lbs)
CU-1	LG	LMU601HV	Rooms	5	R-410A	60	64	250

Gas Unit Heater Schedule

Mark	Model	Eff %	CFM	Input MBH	Output MBH	Temp Rise	Motor	Duct Dia (in)
UH-1 through UH-9	GG060 or equiv.	82.0	1,100	1/10 - 0.075/1050	7.5	60°F	230/1/60	5 × 5

9 gas-fired unit heaters total, each with 4" flue through roof. 3/4" gas pipe connection to existing mains with shut-off valve. Thermostat mounted on pipe nipple at 12'-0" AFF.

Exhaust Fan Schedule

Mark	Manufacturer	Model	CFM	SP (in w.c.)	Drive	RPM	HP
EF-1	Loren Cook	195C66	4,000	0.2	Belt	1,725	695
EF-2	Loren Cook	195C66	4,000	0.2	Belt	1,725	695
EF-3	Loren Cook	195C66	4,000	0.2	Belt	1,725	695
EF-4	Greenheck	SP-B110-L-QD	100	0.3	—	900	812 VA

EF-1, EF-2, EF-3 serve warehouse (26"x26" E/A). EF-4 serves bathroom. Factory speed controller on EF-1 through EF-3. Occupancy sensor with 15-min delayed-off control.

Intake Air Hood

Mark	Model	CFM	Opening Size	Face Velocity	SP
IAH-1	48x46G	12,000	87x85	49'x49'	0.146

Mill finish aluminum with birdscreen. Anti-condensate coating, low-leak type 24V motorized damper, 14" factory curb with extended base for access panel. Interlocked with EF-1, EF-2, EF-3: when exhaust fans are operational, motorized damper activates IAH-1 for makeup air.

Branch Distribution Units

Mark	Manufacturer	Model	Max CFM	Nom CFM	Pipe Connection	Electrical
BDU-1	LG	PMBD3620	48	16	3/8 x 2 in / 3/8 x 2 out	208-230/1
BDU-2	LG	PMBD3620	48	16	3/8 x 2 in / 3/8 x 2 out	208-230/1

Louver Schedule

Mark	Location	Model	CFM	Size
L-1	Wall Mounted	ELF375DXD	125	12x12
L-2	Wall Mounted	ELF375DXD	50	12x12

Aluminum birdscreen. Galvanized sheet metal plenum full size of louver. Insulate plenum with 2" thick insulation. Connect O/A duct to plenum. Low-leak type damper (equiv. to Ruskin CD50) with 24V actuator and transformer.

Outside Air Provisions

Office spaces receive dedicated OA through wall louvers and ductless splits:

• AC-1: 4" dia, 25 CFM
• AC-2: 6" dia, 50 CFM
• AC-3: 8" dia, 125 CFM
• AC-4: 4" dia, 25 CFM
• AC-5: 6" dia, 75 CFM
• Office 10: 4" dia, 25 CFM
• Office 11: 4" dia, 25 CFM

Demolition Scope (MD-100)

• Existing 42"x20" intake air duct up to roof intake dome to be replaced
• Existing 25"x25" roof openings up to exhaust fans to be replaced
• Existing gas unit heaters (UH-3, UH-4, UH-5, UH-6) to be removed; cap gas piping at mains, remove 5" flues through roof, patch roof
• 3/4" gas line to existing water heater to remain
• Existing bath exhaust fan and 10"x3-1/2" exhaust duct to be replaced for future

Pipe Insulation

Copper tube: ASTM B-88, Type K or ASTM B 280, Type ACR. Fittings: ASME B16.22, Solder ASTM B 32 (95-5 tin antimony or alloy HB solder). CPVC Plastic: ASTM F 441, Schedule 40, CPVC socket-type per ASTM F 438.

• Pipe diameter ≤ 1": 1/2" thick insulation
• Pipe diameter > 1.5": 1-1/2" thick insulation
• Flexible closed-cell elastomeric: ASTM C 534, Type I, NFPA 90A, with exterior exposure UV/ozone/moisture resistant 30 mil PVC jacket

Key Mechanical Notes

• All equipment shown for "reference only" regarding structural support. Contractor responsible for structural adequacy and code compliance
• Contractor shall provide balance report by AABC or NEBB certified air balance contractor
• Minimum 10'-0" horizontal clearance between mechanical equipment and combustion air intakes
• 2018 IECC energy code applies
• One-year warranty on work and materials from final acceptance

Power Distribution

Complete electrical renovation: new 400A main distribution panel with sub-panels, all 208Y/120V, 3-phase/4-wire service.

Panel Summary

Panel	Rating	Voltage	Phase	Type	Est. Demand	Feeds
MDP	400A Main CB	208Y/120V	3Φ/4W	NEMA 1 Surface	~71.2 kVA	All sub-panels, UHs, CU-1, freezer
EF1	200A MLO	208Y/120V	3Φ	Sub-panel	~44 kVA	Lighting, receptacles, exhaust fans, walk-in units
EF4	100A MCB	120/208V	1Φ	Sub-panel	~3 kVA	Existing loads to remain
EF6	100A MLO	208Y/120V	3Φ	Sub-panel	<1 kVA	Reconnected receptacles, washer, dryer

All panels rated 22,000A symmetrical AIC. MDP at ~49% loaded, significant spare capacity. Existing 4" conduit to utility transformer remains.

HVAC Electrical Connections

Equipment	Qty	Breaker	VA	Panel
Unit Heaters (UH-1 to UH-9)	9	15A/2P, 208V	768 ea.	MDP
Condensing Unit (CU-1)	1	40A/2P	0 (verify)	MDP-17,19
Blower Distribution (BDU-1, BDU-2)	2	20A/2P	1,129 ea.	MDP
Exhaust Fans (EF-1 to EF-3)	3	30A/3P NF disc.	varies	MDP & EF1
Walk-In Freezer Condensers	2	50A each	~4,800 ea.	MDP
Walk-In Cooler Condenser	1	15A/3P	1,129	EF1

Lighting and Controls

• Starcco "Quick-Tric" modular lighting control system in designated areas
• Dual-technology occupancy sensors (wall and ceiling mounted)
• Integral occupancy sensors on warehouse fixtures
• Emergency exit signs on unswitched circuits

Fire Alarm (FA-501)

Fire alarm system included in the electrical set (sheet FA-501). System details part of the electrical scope.

Revisions

Revision 1 dated 06/22/2023 on sheets E-101 and E-500 (4 days before bid set). Revision clouds marked with "Y" on panel schedules.

General Electrical Notes

• Coordinate outages with Zoo, minimum 72 hours advance notice
• Firestopping per UL-approved methods; no structural penetrations allowed
• All 208Y/120V service: confirm all mechanical equipment is 208V rated
• No VFDs, no BAS/BMS integration, no DDC controls noted
• Remove all abandoned wiring; existing conduit may be reused at contractor's option

Plumbing Systems

Small restroom renovation scope: demolish existing restroom fixtures, install 3 new ADA-compliant fixtures plus a floor drain. Existing water heater, 1" water service, backflow preventer, mop sink, drinking fountain, and two floor drains all remain.

Fixture Schedule

Mark	Description	Manufacturer / Model	Key Spec
LAV-1	Wall-hung lavatory	American Standard Lucerne / Chicago Faucet electronic sensor	0.5 GPM, ASSE 1070 TMV, 1/2" CW/HW, 2" waste
WC-1	Floor-mount water closet	American Standard Madera / Sloan Royal 111 flush valve	1.28 GPF, hard-wired, 4" waste, 1" CW
OB-1	Washing machine outlet box	Sioux Chief 696-R2313MF, fire-rated recessed	1/2" CW/HW, 2" waste
FD-1	Floor drain	Watts FD-100-A epoxy-coated cast iron	Trap primer, 2" waste

Piping

• 1" main supply, 3/4" to water heater, 1/2" branches
• 4" main drain, 3"/2" waste/vent branches
• RPZ backflow preventer required if not existing, installed at 4'-0" AFF
• Sanitary video survey/scope required before bid/construction

HVAC Coordination Items

• Walk-in cooler condensate must drain indirectly into existing floor drain (coordinate with refrigeration contractor)
• Minimum 10'-0" separation between plumbing vents/flues and any fresh air intake
• Condensate drain pipe at 1% grade
• Alternate bid included for water heater replacement

Revisions

Revision 1 dated 06/22/2023 on sheets P-101 and P-501 (no description provided).

Fire Protection

Minimal fire protection package covering modification and repair of the existing wet-pipe sprinkler system. Not a new system design. Existing fire riser and service remain.

System Details

• System type: Existing wet-pipe sprinkler
• Hazard classification: Light Hazard per NFPA 13 (all zones: offices, break rooms, toilet, warehouse)
• Design density/area: Not explicitly stated; NFPA 13 Light Hazard default is 0.10 GPM/ft² over 1,500 ft²
• Hydraulic calcs: Expected from sprinkler subcontractor

Scope of Work

• Modify existing sprinkler piping to accommodate new structure (requires structural drawing coordination)
• Test and replace sprinkler piping damaged by roof failure
• Adjust coverage for walk-in cooler removal (Room 1)

No fire pump, FDC, or backflow preventer specified. No fire alarm, smoke control, or fire/smoke damper drawings in this set. No revisions logged.

Starrco Modular In-Plant Offices

Two modular office buildings (Jobs #47313 and #47312) supplied by Industrial Shelving Systems for the distribution center. Starrco StarrSpace SS3000-DL panels.

Building Specs

Spec	Value
Panel type	SS3000-DL, 3" thick non-combustible
Insulation	R-11, STC 28
Classification	Class 1 non-combustible
Finish	Vinyl-covered gypsum with polystyrene core
Structure	Extruded aluminum framing (6063-T6 / T6005A-T61)
Roof	22 ga. steel roof deck
System height	9'-0"

Job #47313 (Shipping/Receiving Office + Office)

• 23'-0" long, 8'W × 6'H steel framed opening
• 2 wall-mount A/C units (AC-1, AC-2)
• Annotation: flip door swing pending Zoo approval

Job #47312 (Office 10 + Office 11)

• 8'-3" wide, two rooms
• 2 wall-mount A/C units (AC-3, AC-4)
• 125A / 8-space electrical panel

MEP in Modular Units

• HVAC: 4 wall-mount A/C units total, with outside air ducts (4" at 25 CFM and 6" at 50 CFM)
• Electrical: Pre-wired modular system, 120V receptacles, 230V for A/C, GFCI, CAT6 data, 2×4 recessed lights
• Plumbing: None

Outstanding Annotations

• Door swing conflict on Job #47313 flagged, pending Zoo approval
• Missing modular entry area component noted
• Color confirmation needed (Gray/Gray/White recommended)