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APPENDIX A: REFRIGERANT
RE-CHARGE REFRIGERANT
1.
CAUTION:
Recharge procedure must only be carried out by a certified HVAC technician
2.
CAUTION: Procedure must be carried out in an open or vented space, with unobstructed air flow. Ensure there are
no flammable objects in the vicinity. Refrigerant must not be inhaled.
3.
Remove AirTap case. (Section A: Access To Critical Parts, Fig. 1)
4.
Locate refrigerant return line in the system. (Please refer to Fig. 2)
5.
Install a Schrader valve, size 3/8”, to the return line. (Please refer to Fig. 3)
6.
Recover R410A refrigerant from unit. Vacuum the lines to ensure that the lines are refrigerant free and ensure
there is no leakage.
7.
Charge the unit with 17.6 oz of R401A.
8.
Use sniffer to detect leaks.
9.
Seal the Schrader valve.
10.
Put the unit cover back on.
1. Slide the control panel upwards to expose control panel docking connector
2.
Remove connector and slide out the control panel completely
3.
Unfasten decorative panel screws (2 places)
4.
Unfasten metal bracket screws (2 places)
5.
Unfasten heat pump enclosure base screws (4 places)
6.
Remove the external electrical wires by following these steps:
A. Remove the main wiring port access cover
B. Separate the external wires from the unit’s internal wires by re-
moving wing nuts/butt splice connectors
C. Unfasten outer cable ring and pull out the external electrical wires
7.
Remove heat pump enclosure
If an exhaust air vent is attached to the unit, ensure that the vent is
temporarily removed before heat pump enclosure is taken off.
A.
ACCESS TO CRITICAL PARTS
Please follow the steps below to gain access to heat pump components (including filter), anode rod, temperature
limiting reset button and electric heating elements (primary and back-up).
Fig. 1
Fig. 2
Fig. 3
A
LA
R
M
S &
ERR
O
R
S CO
DES
M
A
INT
EN
A
NCE
DU
CT
ING
CO
NT
R
O
LS &
O
PER
A
TI
N
G
LO
G
IC
SP
EC
IFI
CA
TI
O
N
FA
Q
s
A
PP
EN
DI
X
Summary of Contents for ATI50
Page 1: ...Technical Manual AirTap Hybrid Water Heater ATI T3 0 1...
Page 2: ......
