Eco Heating Systems CB 105 HW, Инструкция по установке, обслуживанию и эксплуатации

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E93.1803.901 HW 112
19 ADJUSTING AND SETTING THE WATER HEATER
Before carrying out any adjusting of the burner, carefully read this complete chapter.
The initial lighting of the appliance must be performed by a licensed Gas Technician. Failure
to follow these instructions may result in property damage or serious injury.
As soon as the appliance has been fully installed (with regard to hydraulics,
filling and de-
aeration
of installation, gas, flue gas, air intake, wiring etc.) according to the preliminary
installation instructions, the water heater may then be wired to an electrically grounded
power supply source. The water heater should always be connected to a disconnect or
external power shut off and must be electrically bonded to the ground according to all
applicable standards and regulations.
Introduction
The water heater must always be adjusted in the next situations:
- A new water heater is installed
- As part of a service/maintenance check, in case the O
2
values turns out to be incorrect .
- The gas valve has been (re)placed .
- Gas conversion to propane. Prior to adjustments, follow the procedure in 19.5
- The venturi has been replaced. Prior to adjustments, follow the procedure in 19.4
- The fan has been replaced
- The flue gas check valve has been replaced
In any of the cases described, always check the gas/air ratio of the combustion figure (O
2
) at maximum and mini-
mum input. First set the water heater at maximum load and subsequently at minimum load, and repeat if necessary
(adjustments at maximum load influence values at minimum load and vice versa).
Chapter overview:
First, all necessary values are given in adjustment table in § 19.1.1. A drawing of the gas valve(s) and setting
screws is given in § 19.1.2. In § 19.2 a general procedure, conform which the adjustments must be carried out, is
presented. § 19.3 describes the specific adjustments to be made when the venturi is replaced, and § 19.4 de-
scribes the changes needed when the gas type is set to propane.
19.1.1 C
OMBUSTION TABLE
Table: O
2
/ CO
2
values for maximum and minimum load.
1)
O
2
/ CO
2
[%] O
2
/ CO
2
[%] O
2
/ CO
2
[%]
Gas type: natural gas G20 natural gas G25.3 propane G31
2) 3)
Heater type max load min load max load min load max load min load
CB 85 6.0 / 8.4 6.9 / 7.9 6.1 / 8.2 5.7 / 8.4 4.9 / 10.5 6.7 / 9.3
CB 105 6.0 / 8.4 6.9 / 7.9 6.1 / 8.2 5.7 / 8.4 5.2 / 10.3 6.7 / 9.3
CB 125 6.0 / 8.4 6.9 / 7.9 6.1 / 8.2 5.7 / 8.4 5.2 / 10.3 6.4 / 9.5
CB 155 6.0 / 8.4 6.9 / 7.9 6.1 / 8.2 5.7 / 8.4 5.2 / 10.3 6.4 / 9.5
Allowed tolerances are O
2
± 0.2 and CO
2
± 0.1
1) All values measured without front door.
2) For propane: a conversion kit (orifice) has to be mounted, see § 19.4.
3) For propane: Parameter 92 and 93 (fan speed) must be changed, see § 19.4
WARNING