Ingersoll-Rand ReliaTel, Руководство пользователя, Страница: 94 / 176

94 RT-SVD03L-EN
Table 64. Single zone VAV non-heat pump units w/ modulating heat types
Step Description
RTRM Supply
Fan Output
RTOM Fan
Speed Output
(VFD/
Standard
PWM)
RTOM Fan
Speed Output
(17 SEER
PWM/ERM BC
Plenum)
1 Fan On ON MIN MIN
2 Econ ON MIN MIN
3 Cool 1 ON 67%
82% (a)
4
Cool 2
(b) ON
MAX (100%) MAX (100%)
5 Cool 3 (c) ON
MAX (100%)
NA
6
Reheat (d)
ON 80%
MAX (100%)
7
Heat 1 (Mod Heat
= 50%)
(e)
ON MIN
MIN
(f)
8
Heat 2 (Mod Heat
= 100%)
ON
MAX (100%) MAX (100%)
Note: For all of the service test steps in which the fan speed output is at "MIN", the fan speed will
be at the minimum speed for the associated step.
(a) 82% chosen in order to give the user the ability to have a Service Test step for setting up proper OA damper position setpoints.
(b) For units configured with two steps of mechanical cooling, the unit will energize the supply fan and ramp the output up to 100% for the associated "Cool 2"
step in service test.
(c) 17 SEER units cannot have 3-step cooling.
(d) Reheat step only performed on units configured for HGRH, not for enhanced dehumidification only.
(e) The minimum speed output may be 100% if the unit is configured for CV heating control.
(f)
Precedent™ 17 SEER units do not currently support modulating heat as a heating type, so the minimum speed has not been defined based on product
requirements.
The following table shows the unit operation during
normal test mode. As on non-VSPD compressor
equipped units, service test mode can be initiated by shorting the service test pins on the RTRM or by
applying the appropriate resistor value for the modes
listed below.
Table 65. Precedent ™ ™ 3 to 10 tons SZVAV eFlex ™ ™
Test Step
Fan On/OFF
Supply Fan%
Output
Econ.
VSPD Com-
pressor Capa-
city Output
Outdoor Fan
PWM Output
Test Step
Resistance
(Ohms)
Fan On ON 50% MIN 0% 0% 2.2K
Econ ON 50% OPEN 0% 0% 3.3K
Cool 1 ON 82% MIN 50%
(a)
4.7K
Cool 2 ON 100% MIN 100% (a) 6.8K
Heat 1 ON 100% MIN 0% 0% 10K
Heat 2 ON 100% MIN 0% 0% 15K
Notes:
1 . The supply fan % output is in reference to the user selected maximum unit fan speed. Unit will operate at 100% fan speed during
heating unless configured for SZVAV heating operation.
2 . The supply fan and compressor outputs shall follow all startup and shutdown requirements prior to moving through test mode steps
that change the states of the compressor output from ON to OFF or OFF to ON.
3 . All compressor% outputs are in reference to the 100% capacity point per unit tonnage.
(a) Condenser fan operation will be controlled based on the active OAT as during normal operation.
R Re elliia aT Te ell ™ ™ T Te esstt M Mo od de e