McQuay PDAA Especificaciones Pagina 10
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Page 10 of 48 IM 934-5
Hydronic Subbase – Plumbing and
Electrical Connections
Plumbing
The coil supplied with the subbase heat section can be used
with hot water or steam heating. Piping rough-in can be
done through the openings in the base, or through the back.
The heating coil is supplied with 5/8" O.D. copper tubing for
sweat connections. Hot water heating requires a normally
open valve and steam heating requires a normally closed
valve.
To connect the valve to the heating coil, follow the steps
listed below:
1. Remove the cover plate, located over the right end
of the coil, for easier access to the supply and return
connections.
2. Always pipe the valve to the supply side. If the heating
medium is hot water, connect the supply (outlet of the
valve) to the bottom connection and the return to the top
connection. If the heating medium is steam, connect the
supply to the top connection and the return to the bottom
connection. The “inlet” port of the valve is connected to
the water/steam source.
3.
Sweat in the piping, valve and accessories (as specied
by the design engineer) in the space provided under the
heating coil.
Electrical
The electrical supply can also be roughed in to the subbase
heat section either through the holes provided in the base or
through the back.
The receptacle is shipped in a separate carton to be eld
installed in the knockout provided, and wired in the junction
box.
Complete the installation as described below:
1. Remove the junction box cover plate.
2. Punch out the desired electrical knockout and connect the
electrical supply conduit.
3. Connect power supply wires to the receptacle. Be sure
to properly ground the electrical supply to the subbase
using the green ground screw provided.
4. Mount the receptacle with screws provided and replace
the junction box cover plate.
After the plumbing and electrical work has been completed,
the cabinet wall sleeve can be installed. See "Installing Wall
Sleeve" on page 12
Figure 10: Hydronic Subbase
3/4"
Receptacle (Factory installed when
fuse & disconnect are furnished)
As Req’d
2
1
/
2
"
8
1
/
4
"
2
1
/
2
"
1
1
/
2
"
1/4" – 1
1
/
4
"
8"
3
1
/
4
"
5
1
/
2
"
7
1
/
2
"
6
3
/
4
"
7
1
/
4
"
3/4"
41
1
/
2
"
15"
Fuse
5/8" O.D. Copper Sweat
3" x 5" Opening for Electrical
and/or Piping Rough-in
Optional Fuse Disconnect
Permanent
Mesh Filter
Electrical
Knockout
Top View
Front View
End View
Leveling Legs
- Contents 2
- IM 934-5 Page 3 of 48 3
- Page 4 of 48 IM 934-5 4
- Introduction 5
- Dimensional Data 6
- Wall Opening Requirements 7
- Installing Subbase(s) 8
- Hydronic Subbase 9
- Electrical Connections 10
- External Drain Kit 11
- Indoor Drain Kit 11
- Installing Wall Sleeve 12
- Construction Types 12
- Drip Edge 13
- Procedure 14
- Anchoring The Wall Sleeve 14
- Installing Basic Wall Sleeve 15
- CAUTION 16
- Thick Wall Construction Type 17
- Hydronic 18
- Outdoor Louvers 19
- IMPORTANT! 19
- Installing Louver(s) 20
- Installing Chassis 20
- WARNING 20
- CAUTION 20
- Equipment Start-up 21
- PTAC Startup Report–Audit 22
- Controls 23
- Operation 24
- Thermostat 24
- Sequence of Operation 25
- * = Zone Determination Time 26
- IM 934-5 Page 27 of 48 27
- Unit Protective Logic 28
- Room Freeze Protection 28
- Touchpad Control Features 29
- TODAY 30
- IM 934-5 Page 31 of 48 31
- ProgrammableThermostat Specs 33
- Optional Remote Sensor 33
- Remote Control Node (RCN) 34
- Considerations 35
- Standard (Non-Programmable) 37
- Placement 37
- Page 38 of 48 IM 934-5 38
- IM 934-5 Page 39 of 48 39
- Maintenance (Scheduled) 40
- Recommended Spare Parts 41
- Refrigeration Cycle 41
- Page 42 of 48 IM 934-5 42
- IM 934-5 Page 43 of 48 43
- Page 44 of 48 IM 934-5 44
- Trouble Cause Cure 44
- Model 007 009 012 015 017 45
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