Service Manual

Page

4. Components Overview

Figure 7 – Internal View of Model – Indoor: L-Series (left) and Outdoor K-Series (right)

1 – Fan

9 – Primary heat exchanger

2 –

Exhaust tube

10 –

Secondary heat exchanger

3 – Control unit

11 – Condensate collector

4 – Gas restrictor

12 – Bypass valve

5 – HMI for installer (outdoor version)

13 – Gas valve

6 – Manifold

14 – Water valve (Stepper motor+Flow sensor)

7 – Burner

15 – Temperature sensor (inlet water)

8 – Gas tube

16 – Temperature sensor (outlet water)

17–

Built-in recirculating pump (L-Series only)