Ingersoll-Rand ReliaTel, Руководство пользователя, Страница: 149 / 176

RT-SVD03L-EN 149
• If the temp is below 35º F for 10 more continuous
minutes all compressors will stage off and the ID
fan will continue to run.
• Once reaching 45º F the compressor (circuit) will be
re-enabled.
• The condenser fans will be staged differently in
reheat mode than cooling mode.
• Single circuit units (3 total condenser fans): A
maximum of 2 outdoor fans above 85ºF and a
maximum of 1 outdoor fan below 80ºF.
• Dual circuit units (4 total condenser fans): A
maximum of 4 outdoor fans above 85ºF and a
maximum of 2 outdoor fans below 80ºF.
• Service mode operation
• Reheat step will follow the last cooling step in
service test mode.
• All compressors energized.
• Reheat/cooling modulating valve positions are 50%.
• Pump out solenoid de-energized.
• 60 minute service test interval timer will be in
control.
Figure 95. Voyager ™ ™ Commercial modulating hot
gas reheat
S
S
C
O
M
P
R
E
S
S
O
R
Time Delayed
LPC
Modulating
Valves
C
O
N
D
+
S
B
C
L
R
E
H
E
A
T
E
V
A
P
O
R
A
T
O
R
0.1” Bleed
Line
TXV bulb
RH
Check
Valve
• RTRM handles the main dehumidification logic.
• RTOM contains the humidity and supply air set
point.
• RTDM (new module) handles the reheat/cooling
valve and pump out relay control.
• Customer adjustable set points
• Supply air reheat set point located on RTOM (65-
80ºF default 70ºF)
• Dehumidification (humidity) set point located on
RTOM (40-65% default 50%)
• VAV dehumidification override zone cooling and
heating setpoints (75ºF cooling, 68ºF heating). A
customer can adjust them if a CV remote zone
sensor is connected to the RTRM or by using
resistors.
Figure 96. Modulating hot gas reheat control
boards
SETPOINT LEGEND
1.Discharge Air Heat SP
- 50-150° F
2.Exhaust Fan Enable SP
- 0 to 100%
3.Supply Air Reheat SP
- 65-80° F
4.Dehumidification SP (%)
- 40 to 65% RH
J1-1
J3-1
J5-1
R50
J8-1
J6-1
J4-1
J2-1
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