Weil-mclain ULTRA 230 Bedienungsanleitung PDF herunterladen (Seite 47)

Part number 550-100-029/0810

GAS-FIRED WATER BOILER SERIES 1 & 2 —

Control supplement & Service guide

Parameter explanations (continued)

Maximum fan speed

1. Parameters 13 and 15 can be set to limit the

maximum boiler ﬁring rate. Boiler ﬁring rate is

proportional to the fan speed, so reducing the

maximum fan speed reduces maximum input.

2. Reducing maximum fan speed will be helpful for

systems on which the boiler is oversized for either

space heating or DHW, or both.

3. The maximum fan speed can be set separately

for space heating and DHW using parameters 13

and 15.

Parameter 13 — Space heating max fan

speed

1. Acceptable range:

Ultra-80 to 230: 1300 to 5200 rpm (13 to 52 on s

boiler display).

Ultra-310: 1400 to 5800 rpm (14 to 58 on boiler s

display).

Boiler display shows fan speed in 100’s of rpm. s

A value of 48 would mean a speed of 100 x 48,

or 4800 rpm.

2. Factory default — see Figure 26, page 43.

3. If the boiler is oversized for space heating, you can

reduce the maximum fan speed during space heat-

ing operation, parameter 13, to limit the maximum

boiler input.

Parameter 15 — DHW max fan speed

1. Acceptable range:

Ultra-80 to 230: 1300 to 5200 rpm (13 to 52 on s

boiler display).

Ultra-310: 1400 to 5800 rpm (14 to 58 on boiler s

display).

Boiler display shows fan speed in 100’s of rpm. s

A value of 48 would mean a speed of 100 x 48,

or 4800 rpm.

2. Factory default — see Figure 26, page 43.

3. If the boiler is oversized for domestic water heating,

you can reduce the maximum fan speed during

DHW operation, parameter 15, to limit the maxi-

mum boiler input.

The fan speed MUST NOT BE SET

!"/6% the value listed in Fig-

ure 30, page 48. This would increase

boiler ﬁring rate beyond the accept-

able limit, resulting in potential

for severe personal injury, death or

substantial property damage.

The fan speed MUST NOT BE SET

"%,/7 the value listed in Fig-

ure 30, page 48. This could result in

potential for severe personal injury,

death or substantial property dam-

age.

()'( !,4)45$% INSTALLATIONS

ABOVE FEET

— The -).)-

-5- fan speed (parameter 17) and

)'.)4)/. fan speed (parameter 19)

must be set to the values listed in

Figure 31, page 49. Failure to comply

could result in severe personal injury,

death or substantial property dam-

age.

Minimum fan speed —

parameter 17

1. Parameter 17 sets the minimum fan speed. Boiler

ﬁring rate is proportional to fan speed, so increasing

the minimum fan speed increases the minimum

ﬁring rate (low ﬁre).

2. Parameter 17 sets the minimum fan speed for both

DHW and space heating modes.

See Figure 25, page 42 for procedure to access Parameter settings.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 59 60

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