Ingersoll-Rand WSC036E, Руководство по установке и эксплуатации

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Pre-Start
38 RT-SVX23G-EN
Test Modes
There are three methods in which the “Test” mode can be
cycled at LTB-Test 1 and LTB-Test 2.
• Step Test Mode - This method initiates the different
components of the unit, one at a time, by temporarily
shorting across the two test terminals for two to three
seconds.
For the initial start-up of the unit, this method allows
the technician to cycle a component “On” and have up
to one hour to complete the check.
• Resistance Test Mode - This method can be used for
start-up providing a decade box for variable resistance
outputs is available.This method initiates the different
components of the unit, one at a time, when a specific
resistance value is placed across the two test
terminals.The unit will remain in the specific test mode
for approximately one hour even though the
resistance is left on the test terminals.
• AutoTest Mode -This method is not recommended for
start-up due to the short timing between individual
component steps. This method initiates the different
components of the unit, one at a time, when a jumper
is installed across the test terminals.The unit will start
the first test step and change to the next step every 30
seconds. At the end of the test mode, control of the unit
will automatically revert to the applied “System”
control method.
For unit test steps, test modes, and step resistance values
to cycle the various components, refer to
Table 8, p. 38 .
Table 8. Service test guide for component operation
Test Step Mode Fan Econ
(a)
Comp1 Comp 2 Heat 1 Heat 2 Ohms
Multi-Speed Fan
Output
1
Fan On
Minimum
Position
Setpoint 0%
Off Off Off Off
2.2K Low
Minimum
Ventilation
On Selectable Off Off Off Off
2
Economizer Test
Open
On Open Off Off Off Off 3.3K Low
3 Cool Stage 1 On
Minimum
Position
On
(b)
Off Off Off 4.7K Low
4
(c)
Cool Stage 2 On
Minimum
Position
On
(b)
On Off Off 6.8K
High (2-step cooling)
Low (2-step cooling)
5
(c)
Reheat On Minimum On On Off Off 33K High
6
(c)
Heat Stage 1 On Minimum Off Off On Off 10K High
7
(c)
Heat Stage 2 On Minimum Off Off On On 15K High
(a) The exhaust fan will turn on anytime the economizer damper position is equal to or greater than the exhaust fan setpoint.
(b) The condenser fans will operate any time a compressor is “On” providing the outdoor air temperatures are within the operating values.
(c) Steps for optional accessories and non-applicable modes in unit will be skipped.