2. Existing Hydronic System.pdf
PDF 170 KB Posted
- Solicitation number
- RFP 171 250000002458 3
- Issued by
- Delta County, Edmore Village, Michigan
About this file
This is a technical schematic document for an existing hydronic system prepared by the Michigan Department of Technology, Management and Budget, Facilities and Business Services Administration, Design and Construction Division (File No. 431/15289.RAA, Index No. 65730). The document illustrates a comprehensive water treatment and hydronic distribution system serving multiple building zones including a gymnasium, garage, and receiving area. The system includes water treatment components (BF, BFP), pressure reducing valve stations, make-up water lines, and distribution to air handling units (AHU-1, AHU-2, AHU-3) via heat exchangers and balance valves. The schematic depicts interconnected piping with various diameters ranging from 1 to 4 inches, temperature sensors, pressure gauges, and a heat pump loop control system with dedicated supply and return lines. A chemical pot feeder for propylene glycol and water treatment is integrated into the system, with a high-limit shutdown control set at 120°F. The document notes that the existing air flow system schematics are provided for reference only and that existing controls are to remain in place.
The schematic indicates that a separate fire protection system should be isolated from the hydronic system, as indicated by the callout notation. The design incorporates dedicated outdoor air supply (DOAS-1) with face and bypass dampers for temperature control across multiple zones. A building management system (BMS) controls the domestic hot water preheating function on demand. The document serves as a technical reference for facility planning and does not contain information regarding pricing, contract terms, procurement timelines, or funding sources.
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Text version
P L U R I B U E
S U N U M
C I R C U M S P I C E
S I QU EREI S P E N I N SU L AM AMOENA M
DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET
STATE OF MICHIGAN
ROBERT C. HALL, RA, NCARB, DIRECTOR
FACILITIES AND BUSINESS SERVICES ADMINISTRATION
DESIGN AND CONSTRUCTION DIVISION
F
IL
E N
O . 4
/1
.R A
A
IN
D
E X
N O
. 6
WATER
TREATMENT
BF
P
BFP
T-3
T-1 T-2
M
P-1
P-2
P-3
P-4
ET-2
PRV STATION
3/4" MAKE-UP
WATER
4"
3" R-4B
2-1/2"
1-1/2"
2-1/2"
AHU-1
GARAGE AND RECEIVING
GYMNASIUM AHU-2,3
BALANCE VALVE (TYP.)
4" HWR
3"
3"
2-1/2"
HX-1
ET-1
FC-1
4" BYPASS
N.O.
4"
4"
4"
4"
FIRE
PROTECTION
SYSTEM RISER
1" COLD
WATER
R-4
4"
3"
P-5
P-6
P
2"
2" DRAIN
FIRE PROTECTION
BYPASS
CHEMICAL POT FEEDER
FOR PROPYLENE
GLYCOL AND CHEMICAL
TREATMENT OF WATER
N.O.
HIGH LIMIT TO SHUT-
DOWN AT 120°F
4"
PS-1
UH-2
UH-3
T
T
T
DUCTED OA FROM SOFFIT
DUCTED OA FROM SOFFIT
R A
R A
TS-2 PS-2
SA
SA
FACE AND
BYPASS
DAMPERS
FACE AND
BYPASS
DAMPERS
AHU-3
HC-2
AHU-2
HC-3
PRIMARY AIR MEDIUM PRESSURE
DUCT SYSTEM
P
PP
PRESSURE
GAUGE (TYP.) HEAT PUMP
LOOP
CONTROL
M
M M
TS-1
1.2" WC
MANUAL
BALANCING
DAMPER
8"
FILTER PLENUM WITH 8" ROUND
FA INLET AND 14x12 RA OPENING
HEAT
PUMP
FILTER PLENUM WITH 8" ROUND
FA INLET AND 14x12 RA OPENING
HEAT
PUMP
MANUAL
BALANCING
DAMPER
HOSE KIT WITH
AUTOFLOW CV
B-1 B-2
3"
4" 4"
P-7 P-8
HEAT PUMP SUPPLY
OUT TO BUILDING
HEAT PUMP RETURN
OUT TO BUILDING
3" 4"
T-4
T-5
T-6
T-7
UH-1
MIXED AIR
DAMPERS
MIXED AIR
DAMPERS
NEW DISCHARGE
AIR TEMPERATURE
SENSOR
4 4
SPACE
SENSORS
NOTE: EXISTING AIR FLOW
SYSTEM SCHEMATICS SHOWN
ARE FOR REFERENCE ONLY;
EXISTING CONTROLS TO REMAIN.
P-9
SEE ENLARGED DHWG-1
PLAN FOR CONTINUATION
CONTROLLED BY BMS
ENERGIZED ON CALL FOR
DOMESTIC HOT WATER.
PREHEATED
AIR TO COIL
T-8
DOAS-1
54" X 30"54" X 30"
40" X 20"
RHC-1
BarschJ Callout Separate Fire Protection System from Hydronic System
File details come from the government source that posted it. Updated .