Friedrich Hazardgard SH20M50B, Installation & Operation Manual

Page: 23 / 90

23
Figure 33
-FIELD CONNECTION-
EMI Filter
NOTE:
NOTE:
NOTE:
-AIR CONDITIONER-
Terminal block screw tightening torque .56N-m (5 in lbf) max. Wire size should be 1.29 to 2.06 mm (12 to
16AWG)
Notice: this air conditioner must be installed in accordance with national wiring regulations of country
where installed. Electrical connections to equipment must be carried out by qualified personnel per
EN/IEC 6079-14. Fixed wiring must include a field provided disconnect (all poles.) Repairs affecting
hazard location protection must be carried out by a qualified electrician in accordance with EN/IEC
60079-19.
To maintain IP44 protection and electrical safety, the Hazardgard unit must be installed in accordance
to the installation instructions provided with this product.
Chassis Wiring and Preparation (ATEX & IECEx Models)
Figure 32
STEP 2 Proceed to make the STEP 1 of the Chassis Installation (see page 25 ) then come back to STEP 3
STEP 3 Insert air conditioner’s electric cable through provided cable gland on bottom of electrical junction box and tighten cable gland
nut (see Item 3) torque to 15 N-m, 106 in-lbs. Strip the three electrical conductors approximately 6.35 mm (1/4 inch) install
under provided terminal block LINE terminals and tighten (Item 4). Fixed field wiring must include a field provided disconnect
(all poles). Provide fixed field wiring conductors and cable gland with a minimum IP44 rating. Connect wiring conductors under
provided terminal block LOAD terminals and tighten (Item 5). Field conductors to be copper and a minimum 1.29 to 2.06 mm
(16 to 12 AWG). Ensure both LINE, LOAD and GROUNDs are adequately secured to provided termination points.
STEP1 Remove the junction box from the shipping position underneath the fan motor (Figure 7). Install junction box mounting legs
to back of the junction box using 4 provided machine screws (Figure 32-1). Mount junction box to provided holes on side of air
conditioner sleeve using 4 provided sheet metal screws and 4 serrated washers. Ensure serrated washers are between legs of
junction box and painted metal sleeve (figure 32-2).
To maintain IP44 protection and electrical safety, the Hazardgard unit must be installed in accordance to the
installation instructions provided with this product.
NOTE:
NOTE:
Notice: this air conditioner must be installed in accordance with national wiring regulations of country where
installed. Electrical connections to equipment must be carried out by qualified personnel per EN/IEC 6079-14.
Fixed wiring must include a field provided disconnect (all poles.) Repairs affecting hazard location protection
must be carried out by a qualified electrician in accordance with NEC/CEC 501.10 (B) and EN/IEC 60079-19.
Terminal block screw tightening torque .56N-m (5 in lbs) max. Wire size should be 1.29 to 2.06 mm (12 to
16AWG)
NOTE: