myenergi ZAPPI-2H07TB 1 Phase Type 2 with 6,50 Meter Cable Installation Guide
- June 13, 2024
- Myenergi
Table of Contents
myenergi ZAPPI-2H07TB 1 Phase Type 2 with 6,50 Meter Cable Installation Guide
Overview
zappi’s with a ‘H’ in their Model Number are supplied with a built-in ethernet
port (RJ45 socket) and WiFi to connect to the local network (LAN). They also
come with built-in Hub functionality (vHub) which means you don’t need a
separate hub to link your myenergi devices to the internet / use the myenergi
app.
These install instructions should be read in conjunction with the vHub & WiFi
Module Set-up Manual for guidance on how to set-up your device, connect to the
internet, enable vHub and link multiple myenergi devices.
Remove zappi from its packaging and keep all CT’s and fixing kit to one side. CT’s and fixing kit are enclosed within the cardboard packaging.
Single Phase – 1 CT
Three Phase – 3 CTs
2.
Unscrew the cover and unclip flat ribbon cable.
- If fitting an untethered zappi protect the cover whilst it hangs down during installation.
- If tethered, unclip the ribbon cable and set the cover aside.
3. 
If installing a tethered zappi you will need to fit the enclosed cable wall guard to the unit using the 4x 4mm x12mm screws supplied.
4.
There are 4 possible cable entry positions, carefully decide which one you are going to use from the above image.
You will need an IP65 or above rated cable gland.
Carefully drill hole into unit to match the size of your cable gland. Attach cable gland ensuring IP rating is maintained.
5.
Using the enclosed template mark all the mounting holes required.
- Use top and 2 bottom holes left / right for brick (use 7mm dia. Masonry drill and the wall plugs provided.
- Use 3 vertical holes if mounting to a stud wall or joist.
6. 
To maintain the IP rating of the unit you must ensure that the bungs provided are inserted in any mounting holes that are not used.
7.
Using the fixing kit provided secure unit to the wall ensuring the sealing washers are used to maintain its IP integrity.
(Note: if using the rear cable entry remember to insert the mains cable before mounting to the wall!)
8.
Ensure any cable glands used are now tightened.
9. 
Connect the supply cable in accordance with the local wiring regulations. Strip back 18mm of insulation from the wires on the mains cable and insert into corresponding terminals.
N.B There is also a dedicated stud terminal bottom right hand corner of the main circuit board where you can connect a TT earth to, using a ring terminal. There’s no need to use this stud terminal in TN-S systems.
10
-
Connect any relevant CTs into the termination blocks provided. The CT Golden
Rules must be followed for the zappi to work correctly. -
Hold down the spring connectors and push the CT cables into the blocks.
-
Make a note of what each CT is measuring and record it below E.g Grid, Generation, AC Battery.
-
Ensure the RED goes to + and BLACK goes to –
-
You can use the Harvi if hardwired CTs are impractical
CT Golden Rules
Grid CT
- Only ONE Grid CT per phase (check for only one ~ symbol in Linked Devices Info).
- Must be located to ‘see’ ALL import and ALL export current (i.e. always upstream of any junction box).
- Arrow pointing in direction of import (e.g. towards consumer unit if on Live cable).
All other CTs
- Arrow should point in direction of normal power flow INTO the consumer unit
3-Phase harvi CTs
- When using harvi in 3-phase mode, the CT inputs correspond to the phase number (e.g. CT1 = Phase 1).
11.
Ensure O-ring is present and sits neatly into its channel
12.
Re-fit the cover ensuring the ribbon cable is seated firmly, both in the zappi
and onto the back of the cover.
Using a torque driver, tighten all 8 front cover screws to a setting of 1.2Nm.
Now fit the black or white front fascia.
Ensure all relevant testing and inspection has been carried out according to local wiring regulations, then powerup the zappi.
14. harvi – Linked Devices
If using a harvi you need to ensure your zappi is first set to “master”. If
this is a standalone zappi then it will already be set to master as part of
the power up procedure.
. Then follow the individual harvi instruction manual to ensure correct set up
and pairing.
- Put the harvi into pairing mode by pressing the button on the harvi until you see BLUE flashes. The harvi will stay in pairing mode for 2 minutes. (amount of blue flashes indicates the channel)
- Now select “channel” on the zappi and make sure this corresponds with the channel harvi is on.
- Put the zappi into pairing mode by selecting the menu Other Settings…> Advanced…> 0 0 0 0>Linked Devices…>Pairing Mode…
- The zappi will search for the harvi and display it’s serial number on the screen.
- Press the + button to complete the pairing. After a countdown the screen will refresh and show the connected devices with the harvi listed.
15. Directly connected CTs
Configure any hardwired CTs that you have connected at step 10 in the CT Config menu. Three phase zappis will need one CT per phase. You will need to use a harvi to connect any other CTs you want to use (Unless you have other zappis or eddis on each phase that you can connect to instead).
(Press menu button > Other Settings > Advanced > 0000 > CT Config)
At this point, refer to step 10 to see what you have connected to CT1, CT2, CT3
NB. Leave CTINT settings set to factory default unless advised otherwise by myenergi Technical Support.
16. CTs connected using harvi
If using a harvi, once the harvi has been paired, make sure that you have
disabled the corresponding hardwired CTs on the zappi CT Config menu (See step
15). i.e. If the Grid CT is wired into a harvi make sure that none of the
hardwired CTs are also set to Grid. NOTE: Do NOT wire Grid CT into harvi if
installing in UK.
Please read vHub & WiFi Module instructions for set-up, connecting your device to the internet, enabling the built-in vHub and pairing to other myenergi devices.
Technical Support
If you experience any issues during or post set-up, please contact our technical support team by scanning the QR Code below.
https://myenergi.com/manual-support/
Please contact us directly for the quickest solution.
D3405 UNITED KINGDOM
Rev 2.1.0 May 2022