Carrier 30GTN015-035 Specifications download pdf (Page 12)

Step 2 — Install Control Wiring (See Fig. 14-17)

38AKS028-044

1. Install a field-supplied relay with a 24-v coil

(HN61KK324 suggested) and normally closed contacts

rated for 20 va at 125 vac inductive load. Mount this relay

near the control relay (CR1) in the 38AKS control box.

NOTE: This relay is identified in Fig. 14 as HGR (hot gas

relay).

2. COIL WIRING

Connect a field-supplied wire between TB3-3 and

HGR-1 (L1 side of coil). Connect a field-supplied wire

between TB3-7 and HGR-3 (L2 side of coil).

3. SOLENOID WIRING

a. Add a field-supplied wire between TB2-2 and

HGR-5.

b. Connect one leg of the hot gas bypass solenoid to

HGR-6.

c. Connect the other wire from the hot gas bypass

solenoid to terminal TB2-3.

38AH024-034

1. Install a field-supplied relay with a 115-v coil

(HN61KJ510 suggested) and normally closed contacts

rated for 20 va at 125 vac inductive load. Mount this relay

near the control relay (CR1) in the 38AH control box.

NOTE: This relay is identified in Fig. 15 as HGR (hot gas

relay).

2. COIL WIRING

Connect a field-supplied wire between TB3-3 and

HGR-1 (L1 side of coil). Connect a field-supplied wire

between TB3-1 and HGR-3 (L2 side of coil).

3. SOLENOID WIRING

a. Add a field-supplied wire between TB3-2 and

HGR-4.

b. Connect one leg of the hot gas bypass solenoid to

HGR-5.

c. Connect the other wire from the hot gas bypass

solenoid to terminal TB3-1.

38AH044-084 SINGLE CIRCUIT APPLICATIONS

1. Install a field-supplied relay with a 115-v coil

(HN61KJ510 suggested) and normally closed contacts

rated for 20 va at 125 vac inductive load. Mount this relay

near the control relay (CR1) in the 38AH control box.

NOTE: This relay is identified in Fig. 16 as HGR (hot gas

relay).

2. COIL WIRING

Connect a field-supplied wire between TB3-3 and

HGR-1 (L1 side of coil). Connect a field-supplied wire

between TB3-7 and HGR-3 (L2 side of coil).

3. SOLENOID WIRING

a. Add a field-supplied wire between TB3-5 and

HGR-4.

b. Connect one leg of the hot gas bypass solenoid to

HGR-5.

c. Connect the other wire from the hot gas bypass

solenoid to terminal TB3-7.

38AH044-104 DUAL CIRCUIT APPLICATIONS

1. Install a field-supplied relay with a 115-v coil

(HN61KJ510 suggested) and normally closed contacts

rated for 20 va at 125 vac inductive load. Mount this relay

near the control relay (CR1) in the 38AH control box.

LEGEND

*Pilot valve connects directly to bypass valve per sketch A.

Fig. 13 — Hot Gas Bypass Piping

TXV —

Thermostatic Expansion Valve

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Carrier 30GTN015-035 Specifications Page 12

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