25
Smoke Detectors
Smoke detectors are available as factory-installed options on
50JC models. Smoke detectors may be specified for supply air
only, for return air without or with economizer, or in combina
-
tion of supply air and return air. Return-air smoke detectors are
arranged for vertical return configurations only. All compo
-
nents necessary for operation are factory-provided and mount
-
ed. The unit is factory-configured for immediate smoke detec
-
tor shutdown operation; additional wiring or modifications to
unit control board may be necessary to complete the unit and
smoke detector configuration to meet project requirements.
Units equipped with factory-optional return-air smoke detec
-
tors require a relocation of the sensor module at unit installa
-
tion. See Fig. 47 for the as-shipped location.
Fig. 47 —
Return-Air Smoke Detector,
Shipping Position
Completing Return Air Smoke Sensor Installation
1. Unscrew the two screws holding the return-air smoke
detector assembly. See Fig. 48, Step 1. Save the screws.
2. Turn the assembly 90 degrees and then rotate end to end.
Make sure that the elbow fitting is pointing down. See
Fig. 48, Step 2.
3. Screw the sensor and detector plate into its operating posi
-
tion using screws from Step 1. See Fig. 48, Step 3.
4. Connect the flexible tube on the sampling inlet to the sam
-
pling tube on the basepan.
Additional Application Data
Refer to the application data document
“Factory Installed
Smoke Detectors for Small and Medium Rooftop Units 2 to
25 Tons”
for discussions on additional control features of these
smoke detectors including multiple unit coordination.
Step 12 — Adjust Factory-Installed Options
SMOKE DETECTORS
Smoke detector(s) will be connected to the SystemVu Main
Base Board at J5.
Step 13 — Install Accessories
Available accessories include:
• Roof curb
• Thru-base connection kit (must be installed before unit is
set on curb)
• Electric heaters and single-point connection kits
• Manual outside air damper
• Two-position motorized outside air damper
• EconoMi$er2
• Power Exhaust
• Differential dry-bulb sensor
• Outdoor enthalpy sensor
• Differential enthalpy sensor
• CO
2
sensor
• Louvered hail guard
• Phase monitor control
Refer to separate installation instructions for information on in
-
stalling these accessories.
Fig. 48 —
Completing Installation of Return Air Smoke Sensor
RETURN AIR
SMOKE DETECTOR
(AS SHIPPED)
S
TEP 1
S
TEP 2
S
TEP
3
Summary of Contents for WeatherExpert Puron 50JC04
Page 4: ...4 Fig 2 50JC 04 06 Unit Dimensional Drawing ...
Page 5: ...5 Fig 2 50JC 04 06 Unit Dimensional Drawing cont ...
Page 6: ...6 Fig 2 50JC 04 06 Unit Dimensional Drawing cont ...
Page 22: ...22 Fig 44 Typical 50JC 04 06 Control Wiring Diagram ...
Page 23: ...23 Fig 45 Typical 50JC 04 06 Power Wiring Diagram 208 230 460V Unit Shown ...
