Bryant R-22 Especificações descarregar pdf (Página 29)

SSP-SVX15C-EN

Condition

Resulting Operations

If the disconnect switch is in the

ON position…

1. Current is supplied to the compressor crankcase heater(s) (CCH) through the normally closed contacts

of the crankcase heater relay (CHR) when the compressor is not running.

2. The phase monitor (PM) is powered.

3. The phase monitor (PM) looks at the incoming power to verify that there is no reversed phase, no

phase imbalance, and no loss of phase. If the phase monitor detects any of these three conditions, it

will shut off control voltage.

4. The control transformer (TNS) is powered.

5. The ReliaTel ™ control board (RTRM) is powered and performs self-diagnostic checks to insure that all

internal controls are functioning.

6. The ReliaTel ™ control board (RTRM) checks the configuration parameters against the components

connected to the system.

7. The system LED located on the RTRM module is turned ON within one second after power-up if all

internal operations are correct.

8. The communications board (COMM) is powered if installed.

9. The indoor thermostat (TS) is powered.

Mechanical Heat

In Heat mode the switchover valve (SOV) is turned OOFFFF.

When a request for heating occurs, the control system

turns OONN the mechanical heat (compressors) to

perform heating. Dual circuit heat pumps are factory

configured to have 2-step mechanical heating enabled

(RTRM J4-3 tied to ground).

The staging sequence depends on the type of

mechanical heating that is enabled.

• If 1-Step mechanical heating is enabled (RTRM J4-3

not tied to ground), the unit will stage according to

Table 9, p. 31, as a result of the proportional/

integral control algorithms.

• Units with 2-step mechanical heating will stage

according to Table 10, p. 31, as a result of the

proportional/integral control algorithms.

With mechanical heating, when a heat request is turned

OONN, the Indoor Fan request is turned OONN. When the

heat request is turned OOFFFF, the Indoor Fan request is

turned OOFFFF after a specified delay (60 seconds on all

dual-compressor units and 80 seconds on all single

compressor units). See Table 7, p. 30, Table 8, p. 31,

Table 9, p. 31, and Table 10, p. 31 in this document for

the staging, sequence, and control.

Auxiliary Heat

Auxiliary Heat is factory disabled on all Odyssey units

(Jumper placed between J2-1 and J2-2 RTRM inputs). If

configured (Jumper wire cut or removed between J2-1

and J2-2 on RTRM) and installed, Auxiliary Heat is

enabled or disabled by Smart Recovery.

Smart Recovery

Smart Recovery dictates that if the Active Zone

Temperature is making a recovery using only

mechanical heating toward the setpoint at a rate of at

least 6°F/hour (0.1°F/minute), the electric heat is

disabled. If Smart Recovery is not disabling electric

heat, an approximate 9 minute stage-up delay (plus or

minus a few minutes) is provided for each stage to

allow time for recovery to begin. Stages of electric heat

are enabled and energized as necessary to meet

heating demand. When the request for Auxiliary Heat is

removed, the Indoor Fan request is turned OOFFFF at the

same time as the Electric Heat Stages. See Table 7, p.

30, Table 8, p. 31, Table 9, p. 31, and Table 10, p. 31 for

the staging, sequence, and control.

All split system units are also configured from the

factory for only 1-Stage of Electric Heat (Jumper placed

between J1-3 and J1-6 RTRM inputs). To enable two

stages of Electric Heat, cut or remove the jumper

between J1-3 and J1-6 RTRM inputs.

Emergency Heat

When Emergency Heat mode is requested and

Auxiliary Electric Heat is configured and installed, only

the Auxiliary Electric Heat will be turned OONN to satisfy

the Heat request. Mechanical heat will be held OOFFFF.

When the request for Emergency Heat is initiated, the

Indoor Fan request is turned OONN 1 second before the

electric heat stages are activated. See Table 7, p. 30,

Table 8, p. 31, Table 9, p. 31, and Table 10, p. 31for the

staging, sequence, and control.

Cooling

With a request for Cooling, the RTRM stages the

circuits and control normally for single and dual stage

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